/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 11:14:58,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 11:14:58,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 11:14:58,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 11:14:58,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 11:14:58,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 11:14:58,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 11:14:58,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 11:14:58,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 11:14:58,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 11:14:58,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 11:14:58,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 11:14:58,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 11:14:58,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 11:14:58,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 11:14:58,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 11:14:58,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 11:14:58,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 11:14:58,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 11:14:58,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 11:14:58,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 11:14:58,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 11:14:58,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 11:14:58,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 11:14:58,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 11:14:58,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 11:14:58,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 11:14:58,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 11:14:58,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 11:14:58,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 11:14:58,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 11:14:58,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 11:14:58,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 11:14:58,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 11:14:58,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 11:14:58,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 11:14:58,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 11:14:58,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 11:14:58,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 11:14:58,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 11:14:58,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 11:14:58,287 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 [2020-10-13 11:14:58,334 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 11:14:58,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 11:14:58,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 11:14:58,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 11:14:58,336 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 11:14:58,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 11:14:58,336 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 11:14:58,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 11:14:58,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 11:14:58,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 11:14:58,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 11:14:58,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 11:14:58,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 11:14:58,338 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 11:14:58,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 11:14:58,340 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 11:14:58,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 11:14:58,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 11:14:58,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 11:14:58,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 11:14:58,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 11:14:58,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 11:14:58,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 11:14:58,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 11:14:58,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 11:14:58,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 11:14:58,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 11:14:58,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 11:14:58,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 11:14:58,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 11:14:58,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 11:14:58,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 11:14:58,643 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 11:14:58,644 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 11:14:58,645 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 11:14:58,646 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2020-10-13 11:14:58,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a529777e9/7512c118cfad452083c754355622a44d/FLAG39c5ff691 [2020-10-13 11:14:59,272 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 11:14:59,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2020-10-13 11:14:59,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a529777e9/7512c118cfad452083c754355622a44d/FLAG39c5ff691 [2020-10-13 11:14:59,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a529777e9/7512c118cfad452083c754355622a44d [2020-10-13 11:14:59,502 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 11:14:59,504 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 11:14:59,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 11:14:59,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 11:14:59,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 11:14:59,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:14:59" (1/1) ... [2020-10-13 11:14:59,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a330f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:59, skipping insertion in model container [2020-10-13 11:14:59,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:14:59" (1/1) ... [2020-10-13 11:14:59,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 11:14:59,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 11:15:00,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 11:15:00,176 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 11:15:00,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 11:15:00,464 INFO L208 MainTranslator]: Completed translation [2020-10-13 11:15:00,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:00 WrapperNode [2020-10-13 11:15:00,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 11:15:00,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 11:15:00,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 11:15:00,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 11:15:00,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:00" (1/1) ... [2020-10-13 11:15:00,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:00" (1/1) ... [2020-10-13 11:15:00,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:00" (1/1) ... [2020-10-13 11:15:00,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:00" (1/1) ... [2020-10-13 11:15:00,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:00" (1/1) ... [2020-10-13 11:15:00,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:00" (1/1) ... [2020-10-13 11:15:00,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:00" (1/1) ... [2020-10-13 11:15:00,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 11:15:00,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 11:15:00,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 11:15:00,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 11:15:00,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:00" (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 [2020-10-13 11:15:00,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 11:15:00,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 11:15:00,705 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-13 11:15:00,705 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-13 11:15:00,705 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2020-10-13 11:15:00,705 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2020-10-13 11:15:00,705 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2020-10-13 11:15:00,706 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2020-10-13 11:15:00,706 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2020-10-13 11:15:00,706 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2020-10-13 11:15:00,706 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2020-10-13 11:15:00,706 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2020-10-13 11:15:00,707 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2020-10-13 11:15:00,707 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2020-10-13 11:15:00,707 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2020-10-13 11:15:00,707 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2020-10-13 11:15:00,707 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2020-10-13 11:15:00,707 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2020-10-13 11:15:00,708 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2020-10-13 11:15:00,708 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2020-10-13 11:15:00,708 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2020-10-13 11:15:00,708 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-13 11:15:00,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 11:15:00,708 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-13 11:15:00,709 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-13 11:15:00,709 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-13 11:15:00,709 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-13 11:15:00,709 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-13 11:15:00,709 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-10-13 11:15:00,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2020-10-13 11:15:00,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 11:15:00,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 11:15:00,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 11:15:00,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-13 11:15:00,711 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2020-10-13 11:15:00,711 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2020-10-13 11:15:00,711 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2020-10-13 11:15:00,711 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2020-10-13 11:15:00,711 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2020-10-13 11:15:00,711 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2020-10-13 11:15:00,712 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2020-10-13 11:15:00,712 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2020-10-13 11:15:00,712 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2020-10-13 11:15:00,712 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2020-10-13 11:15:00,712 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2020-10-13 11:15:00,712 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2020-10-13 11:15:00,712 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2020-10-13 11:15:00,713 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2020-10-13 11:15:00,713 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2020-10-13 11:15:00,713 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-13 11:15:00,714 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-13 11:15:00,714 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-13 11:15:00,714 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-10-13 11:15:00,714 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2020-10-13 11:15:00,715 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-13 11:15:00,715 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-13 11:15:00,715 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-13 11:15:00,715 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2020-10-13 11:15:00,715 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2020-10-13 11:15:00,715 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-13 11:15:00,715 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 11:15:00,716 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-13 11:15:00,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 11:15:00,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 11:15:01,219 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:15:01,303 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2020-10-13 11:15:01,303 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2020-10-13 11:15:01,312 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:15:01,358 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2020-10-13 11:15:01,359 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2020-10-13 11:15:01,389 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:15:01,409 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-13 11:15:01,410 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-13 11:15:01,527 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:15:01,601 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2020-10-13 11:15:01,602 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2020-10-13 11:15:01,602 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint L303: #res := 0; [2020-10-13 11:15:01,613 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:15:01,835 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2020-10-13 11:15:01,835 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2020-10-13 11:15:01,836 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:15:01,866 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2020-10-13 11:15:01,867 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2020-10-13 11:15:01,895 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:15:01,913 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-10-13 11:15:01,913 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-10-13 11:15:01,918 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:15:02,093 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2020-10-13 11:15:02,093 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2020-10-13 11:15:02,107 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:15:02,112 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-13 11:15:02,113 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-13 11:15:02,141 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 11:15:02,141 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 11:15:02,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:15:02 BoogieIcfgContainer [2020-10-13 11:15:02,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 11:15:02,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 11:15:02,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 11:15:02,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 11:15:02,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:14:59" (1/3) ... [2020-10-13 11:15:02,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280d7412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:15:02, skipping insertion in model container [2020-10-13 11:15:02,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:00" (2/3) ... [2020-10-13 11:15:02,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280d7412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:15:02, skipping insertion in model container [2020-10-13 11:15:02,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:15:02" (3/3) ... [2020-10-13 11:15:02,160 INFO L109 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.c [2020-10-13 11:15:02,172 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 11:15:02,186 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 11:15:02,202 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 11:15:02,232 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 11:15:02,232 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 11:15:02,232 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 11:15:02,232 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 11:15:02,232 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 11:15:02,233 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 11:15:02,233 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 11:15:02,233 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 11:15:02,265 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states. [2020-10-13 11:15:02,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 11:15:02,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:15:02,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:15:02,275 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:15:02,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:15:02,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1098408584, now seen corresponding path program 1 times [2020-10-13 11:15:02,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:15:02,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328685242] [2020-10-13 11:15:02,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:15:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:02,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:02,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:02,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:02,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:03,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:03,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 11:15:03,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 11:15:03,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 963 [2020-10-13 11:15:03,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:03,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:15:03,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 11:15:03,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:15:03,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 11:15:03,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:15:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:03,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:03,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:03,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:03,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:03,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 11:15:03,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:03,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:15:03,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:15:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:03,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:03,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:03,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:03,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:03,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:15:03,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:03,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:03,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:03,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:03,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:15:03,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:15:03,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328685242] [2020-10-13 11:15:03,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:15:03,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 11:15:03,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851054960] [2020-10-13 11:15:03,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 11:15:03,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:15:03,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 11:15:03,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 11:15:03,734 INFO L87 Difference]: Start difference. First operand 517 states. Second operand 5 states. [2020-10-13 11:15:06,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:15:06,912 INFO L93 Difference]: Finished difference Result 1217 states and 1930 transitions. [2020-10-13 11:15:06,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:15:06,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-13 11:15:06,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:15:06,941 INFO L225 Difference]: With dead ends: 1217 [2020-10-13 11:15:06,941 INFO L226 Difference]: Without dead ends: 840 [2020-10-13 11:15:06,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 11:15:06,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2020-10-13 11:15:07,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 673. [2020-10-13 11:15:07,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-10-13 11:15:07,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 965 transitions. [2020-10-13 11:15:07,122 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 965 transitions. Word has length 20 [2020-10-13 11:15:07,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:15:07,122 INFO L479 AbstractCegarLoop]: Abstraction has 673 states and 965 transitions. [2020-10-13 11:15:07,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 11:15:07,123 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 965 transitions. [2020-10-13 11:15:07,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 11:15:07,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:15:07,124 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] [2020-10-13 11:15:07,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 11:15:07,125 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:15:07,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:15:07,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1083417759, now seen corresponding path program 1 times [2020-10-13 11:15:07,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:15:07,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604730397] [2020-10-13 11:15:07,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:15:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:07,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:07,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:07,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 11:15:07,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:07,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 11:15:07,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:15:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:15:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:15:07,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:07,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:15:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:07,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:07,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:07,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:07,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:07,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 11:15:07,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:07,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:07,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:07,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:07,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:07,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:15:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:07,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:07,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:07,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:07,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:07,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 11:15:07,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:07,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:15:07,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:07,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:15:07,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:07,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:15:07,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604730397] [2020-10-13 11:15:07,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:15:07,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 11:15:07,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454785785] [2020-10-13 11:15:07,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 11:15:07,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:15:07,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 11:15:07,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 11:15:07,349 INFO L87 Difference]: Start difference. First operand 673 states and 965 transitions. Second operand 5 states. [2020-10-13 11:15:10,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:15:10,315 INFO L93 Difference]: Finished difference Result 848 states and 1264 transitions. [2020-10-13 11:15:10,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:15:10,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-13 11:15:10,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:15:10,329 INFO L225 Difference]: With dead ends: 848 [2020-10-13 11:15:10,330 INFO L226 Difference]: Without dead ends: 832 [2020-10-13 11:15:10,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:15:10,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2020-10-13 11:15:10,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 673. [2020-10-13 11:15:10,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-10-13 11:15:10,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 964 transitions. [2020-10-13 11:15:10,403 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 964 transitions. Word has length 20 [2020-10-13 11:15:10,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:15:10,404 INFO L479 AbstractCegarLoop]: Abstraction has 673 states and 964 transitions. [2020-10-13 11:15:10,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 11:15:10,404 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 964 transitions. [2020-10-13 11:15:10,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 11:15:10,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:15:10,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:15:10,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 11:15:10,406 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:15:10,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:15:10,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1051395834, now seen corresponding path program 1 times [2020-10-13 11:15:10,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:15:10,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274096135] [2020-10-13 11:15:10,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:15:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:10,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:10,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:10,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 11:15:10,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:10,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-13 11:15:10,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:15:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 11:15:10,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 11:15:10,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:15:10,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:15:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:10,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:10,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:10,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:10,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:10,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:15:10,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:10,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:10,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:15:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:10,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:10,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:10,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:10,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:10,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:15:10,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:10,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:10,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:10,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:10,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:10,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:15:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:10,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:10,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:10,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:10,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:10,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:15:10,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:10,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:15:10,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:10,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:15:10,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:10,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:15:10,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274096135] [2020-10-13 11:15:10,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:15:10,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 11:15:10,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730319566] [2020-10-13 11:15:10,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 11:15:10,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:15:10,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 11:15:10,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:15:10,803 INFO L87 Difference]: Start difference. First operand 673 states and 964 transitions. Second operand 6 states. [2020-10-13 11:15:14,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:15:14,251 INFO L93 Difference]: Finished difference Result 1359 states and 1968 transitions. [2020-10-13 11:15:14,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:15:14,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-13 11:15:14,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:15:14,267 INFO L225 Difference]: With dead ends: 1359 [2020-10-13 11:15:14,268 INFO L226 Difference]: Without dead ends: 1138 [2020-10-13 11:15:14,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:15:14,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2020-10-13 11:15:14,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 884. [2020-10-13 11:15:14,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-10-13 11:15:14,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1277 transitions. [2020-10-13 11:15:14,391 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1277 transitions. Word has length 25 [2020-10-13 11:15:14,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:15:14,391 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1277 transitions. [2020-10-13 11:15:14,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 11:15:14,392 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1277 transitions. [2020-10-13 11:15:14,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 11:15:14,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:15:14,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:15:14,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 11:15:14,395 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:15:14,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:15:14,395 INFO L82 PathProgramCache]: Analyzing trace with hash -584641203, now seen corresponding path program 1 times [2020-10-13 11:15:14,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:15:14,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297038986] [2020-10-13 11:15:14,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:15:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:14,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:14,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:14,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 11:15:14,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:14,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-13 11:15:14,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:14,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:15:14,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 11:15:14,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 11:15:14,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:14,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:15:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:14,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:14,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:14,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:14,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:14,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:15:14,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:14,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:14,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:14,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:14,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:14,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:15:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:14,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:14,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:14,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:14,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:14,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:15:14,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:14,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:14,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:14,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:14,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:14,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:15:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:14,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:14,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:14,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:14,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:14,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 11:15:14,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:15:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:14,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:15:14,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:14,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:15:14,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297038986] [2020-10-13 11:15:14,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:15:14,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 11:15:14,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217826750] [2020-10-13 11:15:14,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 11:15:14,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:15:14,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 11:15:14,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:15:14,886 INFO L87 Difference]: Start difference. First operand 884 states and 1277 transitions. Second operand 6 states. [2020-10-13 11:15:17,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:15:17,778 INFO L93 Difference]: Finished difference Result 1343 states and 1932 transitions. [2020-10-13 11:15:17,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:15:17,778 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-13 11:15:17,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:15:17,786 INFO L225 Difference]: With dead ends: 1343 [2020-10-13 11:15:17,787 INFO L226 Difference]: Without dead ends: 1112 [2020-10-13 11:15:17,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:15:17,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2020-10-13 11:15:17,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 954. [2020-10-13 11:15:17,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 954 states. [2020-10-13 11:15:17,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1370 transitions. [2020-10-13 11:15:17,855 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1370 transitions. Word has length 30 [2020-10-13 11:15:17,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:15:17,856 INFO L479 AbstractCegarLoop]: Abstraction has 954 states and 1370 transitions. [2020-10-13 11:15:17,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 11:15:17,856 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1370 transitions. [2020-10-13 11:15:17,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 11:15:17,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:15:17,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:15:17,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 11:15:17,859 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:15:17,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:15:17,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1008074, now seen corresponding path program 1 times [2020-10-13 11:15:17,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:15:17,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934515105] [2020-10-13 11:15:17,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:15:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:17,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:17,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:18,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:18,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 11:15:18,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:15:18,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-13 11:15:18,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:15:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 11:15:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 11:15:18,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:18,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:15:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:18,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:18,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:18,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:18,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:18,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:15:18,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:18,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:18,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:18,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:18,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:18,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:15:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:18,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:18,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:18,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:18,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:18,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:15:18,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:18,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:18,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:18,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:18,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:18,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:15:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:18,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:18,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:18,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:18,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:18,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:15:18,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:18,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:18,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:18,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:18,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:18,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:15:18,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934515105] [2020-10-13 11:15:18,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:15:18,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 11:15:18,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454622446] [2020-10-13 11:15:18,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 11:15:18,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:15:18,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 11:15:18,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:15:18,560 INFO L87 Difference]: Start difference. First operand 954 states and 1370 transitions. Second operand 6 states. [2020-10-13 11:15:22,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:15:22,643 INFO L93 Difference]: Finished difference Result 2020 states and 3010 transitions. [2020-10-13 11:15:22,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 11:15:22,644 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-13 11:15:22,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:15:22,655 INFO L225 Difference]: With dead ends: 2020 [2020-10-13 11:15:22,655 INFO L226 Difference]: Without dead ends: 1619 [2020-10-13 11:15:22,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:15:22,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2020-10-13 11:15:22,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1121. [2020-10-13 11:15:22,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2020-10-13 11:15:22,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1660 transitions. [2020-10-13 11:15:22,738 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1660 transitions. Word has length 31 [2020-10-13 11:15:22,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:15:22,738 INFO L479 AbstractCegarLoop]: Abstraction has 1121 states and 1660 transitions. [2020-10-13 11:15:22,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 11:15:22,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1660 transitions. [2020-10-13 11:15:22,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 11:15:22,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:15:22,740 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] [2020-10-13 11:15:22,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 11:15:22,741 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:15:22,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:15:22,741 INFO L82 PathProgramCache]: Analyzing trace with hash -269643889, now seen corresponding path program 1 times [2020-10-13 11:15:22,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:15:22,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725349343] [2020-10-13 11:15:22,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:15:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:22,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:22,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:23,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:23,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 11:15:23,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:15:23,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-10-13 11:15:23,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:23,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:15:23,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:15:23,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 11:15:23,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:23,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:15:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:23,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:23,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:23,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:23,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:23,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:15:23,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:23,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:23,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:15:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:23,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:23,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:23,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:23,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:23,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 11:15:23,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:23,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:15:23,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:23,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:15:23,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:23,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:15:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:23,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:23,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:23,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:23,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:23,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 11:15:23,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:23,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:15:23,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:23,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:15:23,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:23,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:15:23,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725349343] [2020-10-13 11:15:23,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:15:23,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 11:15:23,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701950068] [2020-10-13 11:15:23,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:15:23,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:15:23,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:15:23,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:15:23,559 INFO L87 Difference]: Start difference. First operand 1121 states and 1660 transitions. Second operand 8 states. [2020-10-13 11:15:27,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:15:27,860 INFO L93 Difference]: Finished difference Result 2054 states and 3090 transitions. [2020-10-13 11:15:27,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 11:15:27,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-13 11:15:27,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:15:27,875 INFO L225 Difference]: With dead ends: 2054 [2020-10-13 11:15:27,875 INFO L226 Difference]: Without dead ends: 1292 [2020-10-13 11:15:27,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-13 11:15:27,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2020-10-13 11:15:27,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1023. [2020-10-13 11:15:27,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2020-10-13 11:15:27,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1472 transitions. [2020-10-13 11:15:27,974 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1472 transitions. Word has length 32 [2020-10-13 11:15:27,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:15:27,975 INFO L479 AbstractCegarLoop]: Abstraction has 1023 states and 1472 transitions. [2020-10-13 11:15:27,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:15:27,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1472 transitions. [2020-10-13 11:15:27,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 11:15:27,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:15:27,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:15:27,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 11:15:27,978 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:15:27,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:15:27,979 INFO L82 PathProgramCache]: Analyzing trace with hash 428268071, now seen corresponding path program 1 times [2020-10-13 11:15:27,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:15:27,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429006401] [2020-10-13 11:15:27,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:15:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:28,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:28,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:28,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 11:15:28,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:28,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-13 11:15:28,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:28,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:15:28,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 11:15:28,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 11:15:28,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:28,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:15:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:28,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:28,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:28,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:28,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:28,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:15:28,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:28,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:28,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:28,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:28,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:28,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:15:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:28,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:28,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:28,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:28,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:28,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:15:28,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:28,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:28,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:28,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:28,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:28,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:15:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:28,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:28,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:28,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:28,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:28,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:15:28,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:28,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:28,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:28,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:28,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 11:15:28,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:15:28,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429006401] [2020-10-13 11:15:28,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:15:28,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 11:15:28,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668918756] [2020-10-13 11:15:28,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 11:15:28,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:15:28,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 11:15:28,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:15:28,367 INFO L87 Difference]: Start difference. First operand 1023 states and 1472 transitions. Second operand 6 states. [2020-10-13 11:15:31,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:15:31,312 INFO L93 Difference]: Finished difference Result 1147 states and 1687 transitions. [2020-10-13 11:15:31,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:15:31,313 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-13 11:15:31,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:15:31,321 INFO L225 Difference]: With dead ends: 1147 [2020-10-13 11:15:31,322 INFO L226 Difference]: Without dead ends: 1143 [2020-10-13 11:15:31,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 11:15:31,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2020-10-13 11:15:31,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1022. [2020-10-13 11:15:31,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1022 states. [2020-10-13 11:15:31,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1469 transitions. [2020-10-13 11:15:31,409 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1469 transitions. Word has length 36 [2020-10-13 11:15:31,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:15:31,410 INFO L479 AbstractCegarLoop]: Abstraction has 1022 states and 1469 transitions. [2020-10-13 11:15:31,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 11:15:31,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1469 transitions. [2020-10-13 11:15:31,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 11:15:31,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:15:31,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:15:31,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 11:15:31,413 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:15:31,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:15:31,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1410155750, now seen corresponding path program 1 times [2020-10-13 11:15:31,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:15:31,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956804299] [2020-10-13 11:15:31,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:15:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:31,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:31,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:32,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:32,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 11:15:32,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:15:32,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 776 [2020-10-13 11:15:32,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:32,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:15:32,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 11:15:32,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 11:15:32,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:32,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:15:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:32,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:32,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:32,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:32,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:32,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:15:32,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:32,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:32,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:32,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:32,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:15:32,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:15:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:32,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:32,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:32,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:32,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:32,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:15:32,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:32,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:32,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:32,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:32,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:15:32,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:15:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:32,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:32,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:32,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:32,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:32,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:15:32,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:32,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:15:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:15:32,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956804299] [2020-10-13 11:15:32,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:15:32,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 11:15:32,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419776558] [2020-10-13 11:15:32,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 11:15:32,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:15:32,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 11:15:32,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:15:32,425 INFO L87 Difference]: Start difference. First operand 1022 states and 1469 transitions. Second operand 6 states. [2020-10-13 11:15:35,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:15:35,606 INFO L93 Difference]: Finished difference Result 1548 states and 2220 transitions. [2020-10-13 11:15:35,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:15:35,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-10-13 11:15:35,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:15:35,613 INFO L225 Difference]: With dead ends: 1548 [2020-10-13 11:15:35,614 INFO L226 Difference]: Without dead ends: 1080 [2020-10-13 11:15:35,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 11:15:35,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2020-10-13 11:15:35,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 858. [2020-10-13 11:15:35,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2020-10-13 11:15:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1216 transitions. [2020-10-13 11:15:35,697 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1216 transitions. Word has length 39 [2020-10-13 11:15:35,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:15:35,697 INFO L479 AbstractCegarLoop]: Abstraction has 858 states and 1216 transitions. [2020-10-13 11:15:35,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 11:15:35,698 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1216 transitions. [2020-10-13 11:15:35,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 11:15:35,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:15:35,700 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] [2020-10-13 11:15:35,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 11:15:35,701 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:15:35,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:15:35,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1085841368, now seen corresponding path program 1 times [2020-10-13 11:15:35,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:15:35,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16408578] [2020-10-13 11:15:35,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:15:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:35,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:35,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:35,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 11:15:35,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:35,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-13 11:15:35,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 11:15:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 11:15:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 11:15:35,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:36,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:15:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:36,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:36,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:36,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:36,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:36,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:15:36,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:36,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:36,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:36,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:36,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:36,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:15:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:36,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:36,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:36,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:36,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:36,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:15:36,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:36,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:36,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:36,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:36,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:36,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:15:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:36,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:36,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:36,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:36,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:36,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:15:36,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:36,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:15:36,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:36,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:15:36,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:15:36,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16408578] [2020-10-13 11:15:36,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:15:36,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 11:15:36,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963252620] [2020-10-13 11:15:36,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 11:15:36,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:15:36,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 11:15:36,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:15:36,168 INFO L87 Difference]: Start difference. First operand 858 states and 1216 transitions. Second operand 6 states. [2020-10-13 11:15:39,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:15:39,540 INFO L93 Difference]: Finished difference Result 1024 states and 1492 transitions. [2020-10-13 11:15:39,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:15:39,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-13 11:15:39,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:15:39,548 INFO L225 Difference]: With dead ends: 1024 [2020-10-13 11:15:39,549 INFO L226 Difference]: Without dead ends: 1021 [2020-10-13 11:15:39,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:15:39,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2020-10-13 11:15:39,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 857. [2020-10-13 11:15:39,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 857 states. [2020-10-13 11:15:39,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1214 transitions. [2020-10-13 11:15:39,673 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1214 transitions. Word has length 40 [2020-10-13 11:15:39,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:15:39,674 INFO L479 AbstractCegarLoop]: Abstraction has 857 states and 1214 transitions. [2020-10-13 11:15:39,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 11:15:39,674 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1214 transitions. [2020-10-13 11:15:39,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 11:15:39,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:15:39,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:15:39,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 11:15:39,680 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:15:39,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:15:39,680 INFO L82 PathProgramCache]: Analyzing trace with hash -539598420, now seen corresponding path program 1 times [2020-10-13 11:15:39,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:15:39,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989227261] [2020-10-13 11:15:39,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:15:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:39,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:39,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:40,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:40,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 11:15:40,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:15:40,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-13 11:15:40,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:15:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 11:15:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:15:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:15:40,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:15:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:40,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:40,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:40,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:40,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:40,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 11:15:40,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:40,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:40,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:40,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:40,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:15:40,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:15:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:40,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:40,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:40,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:40,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:40,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 11:15:40,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:40,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:40,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:40,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:40,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:15:40,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:15:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:40,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:40,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:40,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:40,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:40,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:15:40,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:40,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:40,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:15:40,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 11:15:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:40,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:40,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:40,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:40,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:40,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:15:40,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:15:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:40,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:15:40,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:15:40,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:15:40,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989227261] [2020-10-13 11:15:40,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:15:40,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 11:15:40,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735071139] [2020-10-13 11:15:40,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 11:15:40,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:15:40,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 11:15:40,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 11:15:40,326 INFO L87 Difference]: Start difference. First operand 857 states and 1214 transitions. Second operand 7 states. [2020-10-13 11:15:43,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:15:43,572 INFO L93 Difference]: Finished difference Result 1222 states and 1768 transitions. [2020-10-13 11:15:43,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 11:15:43,574 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-10-13 11:15:43,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:15:43,580 INFO L225 Difference]: With dead ends: 1222 [2020-10-13 11:15:43,580 INFO L226 Difference]: Without dead ends: 984 [2020-10-13 11:15:43,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:15:43,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2020-10-13 11:15:43,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 853. [2020-10-13 11:15:43,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 853 states. [2020-10-13 11:15:43,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1204 transitions. [2020-10-13 11:15:43,670 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1204 transitions. Word has length 46 [2020-10-13 11:15:43,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:15:43,670 INFO L479 AbstractCegarLoop]: Abstraction has 853 states and 1204 transitions. [2020-10-13 11:15:43,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 11:15:43,671 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1204 transitions. [2020-10-13 11:15:43,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 11:15:43,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:15:43,674 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] [2020-10-13 11:15:43,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 11:15:43,675 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:15:43,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:15:43,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1793960754, now seen corresponding path program 1 times [2020-10-13 11:15:43,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:15:43,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770522589] [2020-10-13 11:15:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:15:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:43,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:43,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:44,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:44,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:44,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 11:15:44,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:15:44,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 647 [2020-10-13 11:15:44,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:44,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:15:44,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 11:15:44,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:15:44,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:44,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:15:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:44,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:44,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:44,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:44,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:44,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:15:44,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:44,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:44,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:44,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:44,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:44,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:15:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:44,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:44,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:44,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:44,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:44,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:15:44,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:44,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:44,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:44,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:44,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:44,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:15:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:44,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:44,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:44,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:44,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:44,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:15:44,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:44,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:44,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:44,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:44,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:44,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 11:15:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:44,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:44,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:44,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 11:15:44,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:44,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 11:15:44,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:44,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:15:44,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 11:15:44,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:15:44,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:15:44,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770522589] [2020-10-13 11:15:44,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:15:44,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 11:15:44,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839025828] [2020-10-13 11:15:44,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:15:44,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:15:44,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:15:44,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:15:44,543 INFO L87 Difference]: Start difference. First operand 853 states and 1204 transitions. Second operand 8 states. [2020-10-13 11:15:48,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:15:48,298 INFO L93 Difference]: Finished difference Result 1106 states and 1588 transitions. [2020-10-13 11:15:48,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 11:15:48,300 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-10-13 11:15:48,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:15:48,305 INFO L225 Difference]: With dead ends: 1106 [2020-10-13 11:15:48,305 INFO L226 Difference]: Without dead ends: 886 [2020-10-13 11:15:48,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:15:48,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2020-10-13 11:15:48,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 721. [2020-10-13 11:15:48,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-10-13 11:15:48,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1013 transitions. [2020-10-13 11:15:48,374 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1013 transitions. Word has length 47 [2020-10-13 11:15:48,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:15:48,375 INFO L479 AbstractCegarLoop]: Abstraction has 721 states and 1013 transitions. [2020-10-13 11:15:48,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:15:48,375 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1013 transitions. [2020-10-13 11:15:48,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 11:15:48,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:15:48,378 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] [2020-10-13 11:15:48,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 11:15:48,379 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:15:48,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:15:48,379 INFO L82 PathProgramCache]: Analyzing trace with hash -17141218, now seen corresponding path program 1 times [2020-10-13 11:15:48,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:15:48,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247993365] [2020-10-13 11:15:48,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:15:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:48,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:48,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:48,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:49,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:49,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 11:15:49,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:15:49,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-10-13 11:15:49,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:49,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:15:49,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 11:15:49,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 11:15:49,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:15:49,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:15:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:49,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:49,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:49,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:49,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:49,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:15:49,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:49,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:49,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:49,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:49,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:49,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:15:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:49,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:49,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:49,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:49,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:49,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:15:49,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:49,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:49,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:49,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:49,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:49,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:15:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:49,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:49,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:49,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:49,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:49,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:15:49,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:49,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:49,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:49,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:49,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:49,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 11:15:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:49,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:49,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:49,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 11:15:49,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:49,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 11:15:49,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:49,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:15:49,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 11:15:49,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 11:15:49,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:15:49,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247993365] [2020-10-13 11:15:49,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:15:49,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 11:15:49,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744565955] [2020-10-13 11:15:49,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:15:49,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:15:49,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:15:49,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:15:49,211 INFO L87 Difference]: Start difference. First operand 721 states and 1013 transitions. Second operand 8 states. [2020-10-13 11:15:52,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:15:52,768 INFO L93 Difference]: Finished difference Result 1104 states and 1586 transitions. [2020-10-13 11:15:52,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 11:15:52,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-10-13 11:15:52,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:15:52,774 INFO L225 Difference]: With dead ends: 1104 [2020-10-13 11:15:52,774 INFO L226 Difference]: Without dead ends: 866 [2020-10-13 11:15:52,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-13 11:15:52,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-10-13 11:15:52,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 721. [2020-10-13 11:15:52,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-10-13 11:15:52,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1009 transitions. [2020-10-13 11:15:52,844 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1009 transitions. Word has length 51 [2020-10-13 11:15:52,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:15:52,844 INFO L479 AbstractCegarLoop]: Abstraction has 721 states and 1009 transitions. [2020-10-13 11:15:52,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:15:52,845 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1009 transitions. [2020-10-13 11:15:52,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 11:15:52,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:15:52,848 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] [2020-10-13 11:15:52,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 11:15:52,848 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:15:52,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:15:52,848 INFO L82 PathProgramCache]: Analyzing trace with hash 655679991, now seen corresponding path program 1 times [2020-10-13 11:15:52,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:15:52,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591633751] [2020-10-13 11:15:52,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:15:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:52,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:52,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:53,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:53,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 11:15:53,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:15:53,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-13 11:15:53,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:15:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 11:15:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 11:15:53,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:53,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:15:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:53,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:53,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:53,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:53,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:53,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:15:53,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:53,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:53,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:53,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:53,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:53,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:15:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:53,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:53,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:53,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:53,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:53,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:15:53,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:53,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:53,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:15:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:53,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:53,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:53,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:53,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:53,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:15:53,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:53,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:53,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:53,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:53,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:53,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:15:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:53,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:53,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:53,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 11:15:53,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:53,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 11:15:53,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:53,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:15:53,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:53,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 11:15:53,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:53,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:15:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:53,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:53,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:53,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 11:15:53,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:53,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:15:53,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:53,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:15:53,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:53,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:15:53,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:53,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:15:53,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591633751] [2020-10-13 11:15:53,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:15:53,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 11:15:53,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911778458] [2020-10-13 11:15:53,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 11:15:53,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:15:53,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 11:15:53,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 11:15:53,390 INFO L87 Difference]: Start difference. First operand 721 states and 1009 transitions. Second operand 7 states. [2020-10-13 11:15:56,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:15:56,751 INFO L93 Difference]: Finished difference Result 1041 states and 1496 transitions. [2020-10-13 11:15:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 11:15:56,752 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-10-13 11:15:56,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:15:56,758 INFO L225 Difference]: With dead ends: 1041 [2020-10-13 11:15:56,758 INFO L226 Difference]: Without dead ends: 1027 [2020-10-13 11:15:56,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:15:56,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-10-13 11:15:56,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 800. [2020-10-13 11:15:56,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 800 states. [2020-10-13 11:15:56,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1101 transitions. [2020-10-13 11:15:56,833 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1101 transitions. Word has length 48 [2020-10-13 11:15:56,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:15:56,833 INFO L479 AbstractCegarLoop]: Abstraction has 800 states and 1101 transitions. [2020-10-13 11:15:56,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 11:15:56,834 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1101 transitions. [2020-10-13 11:15:56,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 11:15:56,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:15:56,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:15:56,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 11:15:56,837 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:15:56,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:15:56,838 INFO L82 PathProgramCache]: Analyzing trace with hash -704891783, now seen corresponding path program 1 times [2020-10-13 11:15:56,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:15:56,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955470325] [2020-10-13 11:15:56,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:15:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:56,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:56,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:57,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:57,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:57,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 11:15:57,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:15:57,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 871 [2020-10-13 11:15:57,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:57,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:15:57,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 11:15:57,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 11:15:57,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:57,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:15:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:57,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:57,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:57,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:57,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:57,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:15:57,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:57,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:57,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:57,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:57,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:57,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:15:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:57,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:57,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:57,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:57,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:57,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:15:57,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:57,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:57,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:57,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:57,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:57,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:15:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:57,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:57,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:57,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:15:57,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:57,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:15:57,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:57,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:15:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:15:57,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:57,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:15:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:57,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:57,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:57,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 11:15:57,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:57,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 11:15:57,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:15:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 11:15:57,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:57,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:15:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:15:57,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:15:57,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:15:57,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 11:15:57,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:15:57,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 11:15:57,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:15:57,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:15:57,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:15:57,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 11:15:57,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:15:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:15:58,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955470325] [2020-10-13 11:15:58,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:15:58,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 11:15:58,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610137972] [2020-10-13 11:15:58,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 11:15:58,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:15:58,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 11:15:58,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:15:58,021 INFO L87 Difference]: Start difference. First operand 800 states and 1101 transitions. Second operand 12 states. [2020-10-13 11:16:02,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:02,393 INFO L93 Difference]: Finished difference Result 947 states and 1357 transitions. [2020-10-13 11:16:02,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 11:16:02,393 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-13 11:16:02,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:02,398 INFO L225 Difference]: With dead ends: 947 [2020-10-13 11:16:02,398 INFO L226 Difference]: Without dead ends: 943 [2020-10-13 11:16:02,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-13 11:16:02,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2020-10-13 11:16:02,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 819. [2020-10-13 11:16:02,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-10-13 11:16:02,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1128 transitions. [2020-10-13 11:16:02,478 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1128 transitions. Word has length 49 [2020-10-13 11:16:02,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:02,478 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 1128 transitions. [2020-10-13 11:16:02,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 11:16:02,478 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1128 transitions. [2020-10-13 11:16:02,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 11:16:02,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:02,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:16:02,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 11:16:02,482 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:02,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:02,483 INFO L82 PathProgramCache]: Analyzing trace with hash -705168613, now seen corresponding path program 1 times [2020-10-13 11:16:02,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:02,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501266293] [2020-10-13 11:16:02,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:02,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:02,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:02,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:02,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:03,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:03,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:03,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 11:16:03,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 11:16:03,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1080 [2020-10-13 11:16:03,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:03,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:16:03,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 11:16:03,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 11:16:03,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:03,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:03,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:03,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:03,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:03,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:03,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:03,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:03,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:03,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:03,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:03,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:03,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:03,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:03,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:03,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:03,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:03,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 11:16:03,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:03,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:03,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:03,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:03,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:03,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:03,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:03,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:03,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:03,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:03,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:16:03,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:03,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:03,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:03,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:03,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:03,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:16:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:03,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:03,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:03,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 11:16:03,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:03,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 11:16:03,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:03,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:16:03,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:03,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 11:16:03,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:03,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:16:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:03,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:03,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:03,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 11:16:03,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:03,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 11:16:03,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:03,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:16:03,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:03,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 11:16:03,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:03,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:03,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501266293] [2020-10-13 11:16:03,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:03,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 11:16:03,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508415659] [2020-10-13 11:16:03,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 11:16:03,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:03,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 11:16:03,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:16:03,909 INFO L87 Difference]: Start difference. First operand 819 states and 1128 transitions. Second operand 12 states. [2020-10-13 11:16:08,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:08,071 INFO L93 Difference]: Finished difference Result 982 states and 1402 transitions. [2020-10-13 11:16:08,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 11:16:08,071 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-13 11:16:08,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:08,078 INFO L225 Difference]: With dead ends: 982 [2020-10-13 11:16:08,079 INFO L226 Difference]: Without dead ends: 961 [2020-10-13 11:16:08,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-13 11:16:08,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2020-10-13 11:16:08,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 839. [2020-10-13 11:16:08,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 839 states. [2020-10-13 11:16:08,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1152 transitions. [2020-10-13 11:16:08,161 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1152 transitions. Word has length 49 [2020-10-13 11:16:08,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:08,161 INFO L479 AbstractCegarLoop]: Abstraction has 839 states and 1152 transitions. [2020-10-13 11:16:08,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 11:16:08,161 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1152 transitions. [2020-10-13 11:16:08,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 11:16:08,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:08,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:16:08,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 11:16:08,165 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:08,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:08,166 INFO L82 PathProgramCache]: Analyzing trace with hash -421895854, now seen corresponding path program 1 times [2020-10-13 11:16:08,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:08,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576804968] [2020-10-13 11:16:08,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:08,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:08,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:08,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:08,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 11:16:08,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:16:08,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-13 11:16:08,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:08,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:16:08,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 11:16:08,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 11:16:08,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:08,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:08,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:08,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:08,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:08,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:08,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:16:08,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:08,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:08,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:08,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:08,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:08,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:08,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:08,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:08,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:08,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:08,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:08,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:08,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:08,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:08,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:08,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:08,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:08,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:08,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:08,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:08,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:08,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:08,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:08,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:08,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:08,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:08,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:16:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:08,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:08,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:08,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 11:16:08,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:08,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 11:16:08,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:08,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:16:08,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 11:16:08,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 11:16:08,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:08,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:16:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:08,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:08,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:08,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 11:16:08,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:08,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 11:16:08,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:08,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:16:08,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 11:16:08,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 11:16:08,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:08,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:08,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576804968] [2020-10-13 11:16:08,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:08,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 11:16:08,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461640676] [2020-10-13 11:16:08,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:16:08,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:08,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:16:08,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:16:08,823 INFO L87 Difference]: Start difference. First operand 839 states and 1152 transitions. Second operand 8 states. [2020-10-13 11:16:12,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:12,050 INFO L93 Difference]: Finished difference Result 985 states and 1399 transitions. [2020-10-13 11:16:12,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 11:16:12,060 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-10-13 11:16:12,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:12,065 INFO L225 Difference]: With dead ends: 985 [2020-10-13 11:16:12,065 INFO L226 Difference]: Without dead ends: 963 [2020-10-13 11:16:12,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-13 11:16:12,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-10-13 11:16:12,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 839. [2020-10-13 11:16:12,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 839 states. [2020-10-13 11:16:12,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1151 transitions. [2020-10-13 11:16:12,145 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1151 transitions. Word has length 50 [2020-10-13 11:16:12,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:12,145 INFO L479 AbstractCegarLoop]: Abstraction has 839 states and 1151 transitions. [2020-10-13 11:16:12,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:16:12,145 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1151 transitions. [2020-10-13 11:16:12,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 11:16:12,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:12,148 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] [2020-10-13 11:16:12,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 11:16:12,149 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:12,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:12,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1878926736, now seen corresponding path program 1 times [2020-10-13 11:16:12,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:12,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736851666] [2020-10-13 11:16:12,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:12,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:12,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:12,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 11:16:12,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:12,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-13 11:16:12,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:12,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:16:12,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:16:12,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 11:16:12,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:12,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:12,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:12,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:12,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:12,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:12,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:16:12,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:12,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:12,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:12,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:12,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:12,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:12,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:12,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:12,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:12,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:12,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 11:16:12,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:12,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:12,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:12,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:16:12,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:12,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:12,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:12,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:12,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:12,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:12,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:16:12,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:12,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:12,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:12,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:16:12,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:12,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:16:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:12,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:12,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:12,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 11:16:12,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:12,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 11:16:12,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:12,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:16:12,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 11:16:12,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 11:16:12,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:12,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:16:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:12,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:12,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:12,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 11:16:12,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:12,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 11:16:12,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:16:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 11:16:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 11:16:12,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:12,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:12,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736851666] [2020-10-13 11:16:12,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:12,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 11:16:12,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431529434] [2020-10-13 11:16:12,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 11:16:12,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:12,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 11:16:12,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-13 11:16:12,765 INFO L87 Difference]: Start difference. First operand 839 states and 1151 transitions. Second operand 11 states. [2020-10-13 11:16:16,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:16,736 INFO L93 Difference]: Finished difference Result 1048 states and 1481 transitions. [2020-10-13 11:16:16,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 11:16:16,739 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-10-13 11:16:16,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:16,744 INFO L225 Difference]: With dead ends: 1048 [2020-10-13 11:16:16,745 INFO L226 Difference]: Without dead ends: 957 [2020-10-13 11:16:16,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-10-13 11:16:16,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2020-10-13 11:16:16,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 836. [2020-10-13 11:16:16,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-10-13 11:16:16,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1143 transitions. [2020-10-13 11:16:16,820 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1143 transitions. Word has length 50 [2020-10-13 11:16:16,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:16,820 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1143 transitions. [2020-10-13 11:16:16,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 11:16:16,821 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1143 transitions. [2020-10-13 11:16:16,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 11:16:16,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:16,824 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] [2020-10-13 11:16:16,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 11:16:16,824 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:16,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:16,825 INFO L82 PathProgramCache]: Analyzing trace with hash 2025619538, now seen corresponding path program 1 times [2020-10-13 11:16:16,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:16,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571202703] [2020-10-13 11:16:16,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:16,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:16,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:16,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 11:16:16,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:16,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 11:16:16,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:16,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:16,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 11:16:16,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 11:16:16,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:16,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:16,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:17,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:17,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:17,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:17,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:17,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:17,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:17,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:17,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:17,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:17,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:17,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:17,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:17,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:17,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:17,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:17,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:17,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:17,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:17,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:17,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:17,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:17,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:17,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:17,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:17,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:17,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:16:17,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:17,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:17,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:17,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:17,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:17,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:16:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:17,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:17,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:17,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 11:16:17,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:17,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 11:16:17,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:17,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:17,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:17,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 11:16:17,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:17,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:16:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:17,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:17,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:17,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 11:16:17,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:17,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:16:17,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:17,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:17,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:17,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 11:16:17,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:17,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:17,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571202703] [2020-10-13 11:16:17,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:17,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 11:16:17,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284668666] [2020-10-13 11:16:17,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 11:16:17,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:17,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 11:16:17,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 11:16:17,126 INFO L87 Difference]: Start difference. First operand 836 states and 1143 transitions. Second operand 7 states. [2020-10-13 11:16:20,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:20,470 INFO L93 Difference]: Finished difference Result 1012 states and 1425 transitions. [2020-10-13 11:16:20,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 11:16:20,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-13 11:16:20,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:20,477 INFO L225 Difference]: With dead ends: 1012 [2020-10-13 11:16:20,477 INFO L226 Difference]: Without dead ends: 977 [2020-10-13 11:16:20,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:16:20,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2020-10-13 11:16:20,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 843. [2020-10-13 11:16:20,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 843 states. [2020-10-13 11:16:20,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1145 transitions. [2020-10-13 11:16:20,587 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1145 transitions. Word has length 50 [2020-10-13 11:16:20,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:20,587 INFO L479 AbstractCegarLoop]: Abstraction has 843 states and 1145 transitions. [2020-10-13 11:16:20,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 11:16:20,587 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1145 transitions. [2020-10-13 11:16:20,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 11:16:20,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:20,591 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] [2020-10-13 11:16:20,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 11:16:20,591 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:20,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:20,591 INFO L82 PathProgramCache]: Analyzing trace with hash 274322421, now seen corresponding path program 1 times [2020-10-13 11:16:20,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:20,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167555872] [2020-10-13 11:16:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:20,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:20,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:20,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:20,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:21,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:21,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:21,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 11:16:21,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 11:16:21,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 947 [2020-10-13 11:16:21,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:16:21,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 11:16:21,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 11:16:21,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:21,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:21,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:21,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:21,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:21,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:21,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:21,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:21,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:21,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:21,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:21,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:21,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:21,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:21,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:21,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:21,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:21,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:21,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:21,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:21,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:21,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:21,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:21,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:21,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:21,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:21,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:21,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:21,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:21,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:21,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:21,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:21,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:21,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:21,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:16:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:21,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:21,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:21,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 11:16:21,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:21,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 11:16:21,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:21,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:16:21,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:21,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 11:16:21,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:21,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:16:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:21,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:21,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:21,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 11:16:21,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:21,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 11:16:21,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:21,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:16:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 11:16:21,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:21,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167555872] [2020-10-13 11:16:21,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:21,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 11:16:21,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086965970] [2020-10-13 11:16:21,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 11:16:21,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:21,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 11:16:21,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:16:21,877 INFO L87 Difference]: Start difference. First operand 843 states and 1145 transitions. Second operand 12 states. [2020-10-13 11:16:26,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:26,040 INFO L93 Difference]: Finished difference Result 1002 states and 1410 transitions. [2020-10-13 11:16:26,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 11:16:26,046 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-13 11:16:26,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:26,052 INFO L225 Difference]: With dead ends: 1002 [2020-10-13 11:16:26,052 INFO L226 Difference]: Without dead ends: 963 [2020-10-13 11:16:26,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-13 11:16:26,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-10-13 11:16:26,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 842. [2020-10-13 11:16:26,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2020-10-13 11:16:26,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1143 transitions. [2020-10-13 11:16:26,134 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1143 transitions. Word has length 50 [2020-10-13 11:16:26,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:26,134 INFO L479 AbstractCegarLoop]: Abstraction has 842 states and 1143 transitions. [2020-10-13 11:16:26,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 11:16:26,135 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1143 transitions. [2020-10-13 11:16:26,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 11:16:26,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:26,138 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] [2020-10-13 11:16:26,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 11:16:26,138 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:26,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:26,139 INFO L82 PathProgramCache]: Analyzing trace with hash -120624203, now seen corresponding path program 1 times [2020-10-13 11:16:26,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:26,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129471818] [2020-10-13 11:16:26,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:26,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:26,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:26,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:26,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:26,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:26,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 11:16:26,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 11:16:26,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-13 11:16:26,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:16:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:16:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 11:16:26,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:26,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:26,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:26,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:26,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:26,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:26,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:26,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:26,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:26,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:26,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:26,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:26,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:26,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:26,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:26,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:26,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:16:26,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:26,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:26,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:26,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:16:26,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:26,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:26,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:26,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:26,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:26,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:26,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:16:26,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:26,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:16:26,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:26,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:16:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:26,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:26,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:26,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 11:16:26,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:26,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 11:16:26,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:16:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 11:16:26,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 11:16:26,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:26,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:16:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:26,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:26,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:26,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 11:16:26,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:26,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 11:16:26,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:26,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:16:26,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 11:16:26,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 11:16:26,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:26,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129471818] [2020-10-13 11:16:26,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:26,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 11:16:26,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874219454] [2020-10-13 11:16:26,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 11:16:26,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:26,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 11:16:26,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-13 11:16:26,832 INFO L87 Difference]: Start difference. First operand 842 states and 1143 transitions. Second operand 11 states. [2020-10-13 11:16:27,017 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-13 11:16:31,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:31,464 INFO L93 Difference]: Finished difference Result 1131 states and 1573 transitions. [2020-10-13 11:16:31,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 11:16:31,465 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-10-13 11:16:31,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:31,470 INFO L225 Difference]: With dead ends: 1131 [2020-10-13 11:16:31,470 INFO L226 Difference]: Without dead ends: 1062 [2020-10-13 11:16:31,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-10-13 11:16:31,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2020-10-13 11:16:31,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 854. [2020-10-13 11:16:31,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 854 states. [2020-10-13 11:16:31,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1167 transitions. [2020-10-13 11:16:31,550 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1167 transitions. Word has length 50 [2020-10-13 11:16:31,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:31,550 INFO L479 AbstractCegarLoop]: Abstraction has 854 states and 1167 transitions. [2020-10-13 11:16:31,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 11:16:31,550 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1167 transitions. [2020-10-13 11:16:31,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 11:16:31,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:31,554 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] [2020-10-13 11:16:31,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 11:16:31,554 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:31,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:31,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1098118333, now seen corresponding path program 1 times [2020-10-13 11:16:31,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:31,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153996506] [2020-10-13 11:16:31,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:31,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:31,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:31,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 11:16:31,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:31,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 11:16:31,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:31,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:31,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 11:16:31,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 11:16:31,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:31,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:31,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:31,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:31,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:31,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:31,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:31,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:31,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:31,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:31,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:31,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:31,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:31,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:31,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:31,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:31,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:31,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:16:31,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:31,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:31,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:31,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:31,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:31,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:31,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:31,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:31,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:31,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:31,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:16:31,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:31,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:31,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:31,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:31,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:31,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:16:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:31,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:31,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:31,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 11:16:31,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:31,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 11:16:31,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:31,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 11:16:31,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:31,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:16:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:31,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:31,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:31,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 11:16:31,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:31,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 11:16:31,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:31,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:31,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:31,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 11:16:31,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:31,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:31,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:31,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:31,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:16:31,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:31,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:16:31,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:31,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:31,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:31,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 11:16:31,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:31,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:31,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153996506] [2020-10-13 11:16:31,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:31,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 11:16:31,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833533698] [2020-10-13 11:16:31,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 11:16:31,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:31,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 11:16:31,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-13 11:16:31,964 INFO L87 Difference]: Start difference. First operand 854 states and 1167 transitions. Second operand 9 states. [2020-10-13 11:16:34,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:34,056 INFO L93 Difference]: Finished difference Result 1002 states and 1412 transitions. [2020-10-13 11:16:34,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 11:16:34,056 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-13 11:16:34,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:34,062 INFO L225 Difference]: With dead ends: 1002 [2020-10-13 11:16:34,062 INFO L226 Difference]: Without dead ends: 997 [2020-10-13 11:16:34,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:16:34,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-10-13 11:16:34,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 871. [2020-10-13 11:16:34,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 871 states. [2020-10-13 11:16:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1188 transitions. [2020-10-13 11:16:34,145 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1188 transitions. Word has length 52 [2020-10-13 11:16:34,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:34,145 INFO L479 AbstractCegarLoop]: Abstraction has 871 states and 1188 transitions. [2020-10-13 11:16:34,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 11:16:34,145 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1188 transitions. [2020-10-13 11:16:34,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 11:16:34,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:34,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:16:34,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 11:16:34,149 INFO L427 AbstractCegarLoop]: === Iteration 22 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:34,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:34,149 INFO L82 PathProgramCache]: Analyzing trace with hash 761658191, now seen corresponding path program 1 times [2020-10-13 11:16:34,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:34,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47328925] [2020-10-13 11:16:34,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:34,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:34,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:34,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:34,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:34,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 11:16:34,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:16:34,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 596 [2020-10-13 11:16:34,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:34,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:16:34,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 11:16:34,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 11:16:34,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:34,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:34,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:34,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:34,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:34,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:34,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:34,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:34,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:34,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:34,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:34,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:34,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:34,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:34,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:34,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:34,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:34,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:34,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:34,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:34,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:34,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:34,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:34,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:34,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:34,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:34,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:34,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:34,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:16:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:34,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:35,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:35,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 11:16:35,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:35,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 11:16:35,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:35,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:16:35,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:35,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 11:16:35,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:35,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:16:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:35,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:35,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:35,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 11:16:35,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:35,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 11:16:35,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:35,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:16:35,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:35,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 11:16:35,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:35,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:35,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:35,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:35,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:16:35,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:35,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:35,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:35,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:35,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:35,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:16:35,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:35,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47328925] [2020-10-13 11:16:35,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:35,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-13 11:16:35,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116100222] [2020-10-13 11:16:35,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 11:16:35,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:35,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 11:16:35,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-13 11:16:35,244 INFO L87 Difference]: Start difference. First operand 871 states and 1188 transitions. Second operand 15 states. [2020-10-13 11:16:38,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:38,787 INFO L93 Difference]: Finished difference Result 1022 states and 1439 transitions. [2020-10-13 11:16:38,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 11:16:38,791 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-10-13 11:16:38,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:38,794 INFO L225 Difference]: With dead ends: 1022 [2020-10-13 11:16:38,795 INFO L226 Difference]: Without dead ends: 982 [2020-10-13 11:16:38,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-13 11:16:38,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-10-13 11:16:38,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 862. [2020-10-13 11:16:38,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 862 states. [2020-10-13 11:16:38,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1164 transitions. [2020-10-13 11:16:38,879 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1164 transitions. Word has length 53 [2020-10-13 11:16:38,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:38,879 INFO L479 AbstractCegarLoop]: Abstraction has 862 states and 1164 transitions. [2020-10-13 11:16:38,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 11:16:38,879 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1164 transitions. [2020-10-13 11:16:38,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 11:16:38,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:38,883 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] [2020-10-13 11:16:38,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 11:16:38,883 INFO L427 AbstractCegarLoop]: === Iteration 23 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:38,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:38,883 INFO L82 PathProgramCache]: Analyzing trace with hash -2080253382, now seen corresponding path program 1 times [2020-10-13 11:16:38,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:38,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541730262] [2020-10-13 11:16:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:38,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:38,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:39,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:39,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 11:16:39,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:16:39,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-13 11:16:39,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:39,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:16:39,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:16:39,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 11:16:39,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:39,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:39,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:39,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:39,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:39,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:39,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:16:39,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:39,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:39,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:39,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:39,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:39,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:39,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:39,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:39,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:39,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:39,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 11:16:39,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:16:39,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:39,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:39,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:39,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:39,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:39,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:39,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:16:39,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:39,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:39,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:39,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:16:39,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:39,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:16:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:39,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:39,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:39,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 11:16:39,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:39,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 11:16:39,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:39,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:16:39,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:39,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 11:16:39,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:39,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:16:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:39,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:39,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:39,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 11:16:39,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:39,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 11:16:39,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:39,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:39,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:39,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 11:16:39,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:39,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:39,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541730262] [2020-10-13 11:16:39,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:39,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 11:16:39,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404119089] [2020-10-13 11:16:39,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 11:16:39,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:39,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 11:16:39,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:16:39,543 INFO L87 Difference]: Start difference. First operand 862 states and 1164 transitions. Second operand 10 states. [2020-10-13 11:16:41,197 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-13 11:16:42,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:42,933 INFO L93 Difference]: Finished difference Result 999 states and 1390 transitions. [2020-10-13 11:16:42,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 11:16:42,933 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-10-13 11:16:42,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:42,939 INFO L225 Difference]: With dead ends: 999 [2020-10-13 11:16:42,939 INFO L226 Difference]: Without dead ends: 964 [2020-10-13 11:16:42,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-13 11:16:42,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2020-10-13 11:16:43,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 836. [2020-10-13 11:16:43,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-10-13 11:16:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1135 transitions. [2020-10-13 11:16:43,014 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1135 transitions. Word has length 52 [2020-10-13 11:16:43,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:43,014 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1135 transitions. [2020-10-13 11:16:43,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 11:16:43,014 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1135 transitions. [2020-10-13 11:16:43,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 11:16:43,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:43,017 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] [2020-10-13 11:16:43,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 11:16:43,017 INFO L427 AbstractCegarLoop]: === Iteration 24 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:43,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:43,017 INFO L82 PathProgramCache]: Analyzing trace with hash 100740086, now seen corresponding path program 1 times [2020-10-13 11:16:43,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:43,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453744663] [2020-10-13 11:16:43,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:43,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:43,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:43,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 11:16:43,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:43,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-13 11:16:43,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:43,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 11:16:43,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 11:16:43,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 11:16:43,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:43,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:43,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:43,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:43,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:43,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:43,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:43,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:43,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:43,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:43,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:43,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:43,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:43,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:43,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:43,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:43,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:43,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:43,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:43,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:43,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:43,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:43,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:43,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:43,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:43,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:43,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:43,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:43,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:16:43,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:43,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:43,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:43,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:43,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:43,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 11:16:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:43,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:43,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:43,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 11:16:43,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:43,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 11:16:43,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:43,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:16:43,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:43,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 11:16:43,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:43,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:16:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:43,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:43,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:43,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 11:16:43,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:43,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 11:16:43,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:43,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:16:43,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:43,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 11:16:43,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:43,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:16:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:43,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:43,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:43,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 11:16:43,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:43,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 11:16:43,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:43,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:16:43,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:43,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 11:16:43,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:43,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:43,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453744663] [2020-10-13 11:16:43,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:43,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-13 11:16:43,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032910907] [2020-10-13 11:16:43,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 11:16:43,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:43,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 11:16:43,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-13 11:16:43,722 INFO L87 Difference]: Start difference. First operand 836 states and 1135 transitions. Second operand 15 states. [2020-10-13 11:16:47,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:47,297 INFO L93 Difference]: Finished difference Result 972 states and 1362 transitions. [2020-10-13 11:16:47,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 11:16:47,297 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-13 11:16:47,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:47,303 INFO L225 Difference]: With dead ends: 972 [2020-10-13 11:16:47,303 INFO L226 Difference]: Without dead ends: 954 [2020-10-13 11:16:47,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-13 11:16:47,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2020-10-13 11:16:47,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 834. [2020-10-13 11:16:47,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 834 states. [2020-10-13 11:16:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1131 transitions. [2020-10-13 11:16:47,386 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1131 transitions. Word has length 55 [2020-10-13 11:16:47,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:47,387 INFO L479 AbstractCegarLoop]: Abstraction has 834 states and 1131 transitions. [2020-10-13 11:16:47,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 11:16:47,387 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1131 transitions. [2020-10-13 11:16:47,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 11:16:47,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:47,389 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] [2020-10-13 11:16:47,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 11:16:47,390 INFO L427 AbstractCegarLoop]: === Iteration 25 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:47,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:47,390 INFO L82 PathProgramCache]: Analyzing trace with hash -2119637056, now seen corresponding path program 1 times [2020-10-13 11:16:47,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:47,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529555923] [2020-10-13 11:16:47,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:47,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:47,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:47,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 11:16:47,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:47,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-13 11:16:47,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:47,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 11:16:47,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 11:16:47,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 11:16:47,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:47,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:47,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:47,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:47,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:47,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:47,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:47,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:47,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:47,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:47,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:47,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:47,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:47,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:47,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:47,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:47,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:47,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:47,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:47,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:47,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:47,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:47,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:47,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:47,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:47,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:47,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:47,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:47,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:47,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:47,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:47,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 11:16:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:47,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:47,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:47,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 11:16:47,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:47,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 11:16:47,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:47,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:16:47,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:47,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 11:16:47,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:47,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-13 11:16:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:47,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:47,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:47,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 11:16:47,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:47,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 11:16:47,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:47,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:16:47,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:47,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 11:16:47,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:48,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:16:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:48,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:48,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:48,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 11:16:48,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:48,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 11:16:48,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:48,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:16:48,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:48,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 11:16:48,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:48,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529555923] [2020-10-13 11:16:48,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:48,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-13 11:16:48,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203261664] [2020-10-13 11:16:48,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 11:16:48,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:48,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 11:16:48,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-13 11:16:48,052 INFO L87 Difference]: Start difference. First operand 834 states and 1131 transitions. Second operand 15 states. [2020-10-13 11:16:51,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:51,575 INFO L93 Difference]: Finished difference Result 967 states and 1355 transitions. [2020-10-13 11:16:51,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 11:16:51,575 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-13 11:16:51,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:51,581 INFO L225 Difference]: With dead ends: 967 [2020-10-13 11:16:51,581 INFO L226 Difference]: Without dead ends: 949 [2020-10-13 11:16:51,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-13 11:16:51,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2020-10-13 11:16:51,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 829. [2020-10-13 11:16:51,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 829 states. [2020-10-13 11:16:51,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1124 transitions. [2020-10-13 11:16:51,653 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1124 transitions. Word has length 56 [2020-10-13 11:16:51,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:51,653 INFO L479 AbstractCegarLoop]: Abstraction has 829 states and 1124 transitions. [2020-10-13 11:16:51,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 11:16:51,653 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1124 transitions. [2020-10-13 11:16:51,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 11:16:51,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:51,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:16:51,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 11:16:51,656 INFO L427 AbstractCegarLoop]: === Iteration 26 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:51,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:51,657 INFO L82 PathProgramCache]: Analyzing trace with hash -581497572, now seen corresponding path program 1 times [2020-10-13 11:16:51,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:51,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326349083] [2020-10-13 11:16:51,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:51,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:51,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:52,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:52,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:53,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:54,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:54,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 11:16:54,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 11:16:54,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2324 [2020-10-13 11:16:54,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:54,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:16:54,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 11:16:54,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:16:54,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:54,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:54,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:54,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:54,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:54,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:54,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:54,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:54,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:54,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:54,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:54,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:54,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:54,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:54,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:54,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:54,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:54,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:54,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:54,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:54,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:54,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:54,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:54,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:54,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:54,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:54,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:16:54,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:54,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:54,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:54,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:54,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:54,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:16:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:54,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:54,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:54,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 11:16:54,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:54,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 11:16:54,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:54,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:16:54,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 11:16:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:16:54,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:54,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 11:16:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:54,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:54,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:54,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 11:16:54,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:54,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 11:16:54,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:54,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:16:54,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 11:16:54,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:16:54,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:54,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-13 11:16:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:54,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:54,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:54,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 11:16:54,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:54,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 11:16:54,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:16:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 11:16:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 11:16:54,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:54,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:16:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:54,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:54,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:54,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:16:54,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:54,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:16:54,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:54,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:54,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:54,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:16:54,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:54,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:54,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326349083] [2020-10-13 11:16:54,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:54,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 11:16:54,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555923742] [2020-10-13 11:16:54,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 11:16:54,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:54,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 11:16:54,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:16:54,499 INFO L87 Difference]: Start difference. First operand 829 states and 1124 transitions. Second operand 12 states. [2020-10-13 11:16:58,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:58,082 INFO L93 Difference]: Finished difference Result 985 states and 1387 transitions. [2020-10-13 11:16:58,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 11:16:58,083 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2020-10-13 11:16:58,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:58,087 INFO L225 Difference]: With dead ends: 985 [2020-10-13 11:16:58,087 INFO L226 Difference]: Without dead ends: 959 [2020-10-13 11:16:58,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-13 11:16:58,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-10-13 11:16:58,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 835. [2020-10-13 11:16:58,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 835 states. [2020-10-13 11:16:58,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1138 transitions. [2020-10-13 11:16:58,181 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1138 transitions. Word has length 58 [2020-10-13 11:16:58,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:58,182 INFO L479 AbstractCegarLoop]: Abstraction has 835 states and 1138 transitions. [2020-10-13 11:16:58,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 11:16:58,182 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1138 transitions. [2020-10-13 11:16:58,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 11:16:58,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:58,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:16:58,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 11:16:58,186 INFO L427 AbstractCegarLoop]: === Iteration 27 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:58,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:58,186 INFO L82 PathProgramCache]: Analyzing trace with hash -343166575, now seen corresponding path program 1 times [2020-10-13 11:16:58,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:58,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662289337] [2020-10-13 11:16:58,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:58,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:58,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:58,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:58,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:58,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:00,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:00,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 11:17:00,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 11:17:00,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2208 [2020-10-13 11:17:00,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 11:17:00,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:17:00,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:00,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:00,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:00,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:00,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:00,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:00,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:00,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:00,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:00,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:00,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:00,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:00,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:00,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:00,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:00,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:00,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:00,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:00,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:00,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:00,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:00,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:00,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:00,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:00,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:00,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:00,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:00,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:00,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:00,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:00,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:00,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:17:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:00,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:00,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:00,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 11:17:00,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:00,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 11:17:00,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:00,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:00,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 11:17:00,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:17:00,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:00,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 11:17:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:00,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:00,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:00,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 11:17:00,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:00,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 11:17:00,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:00,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:00,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 11:17:00,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:17:00,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:00,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 11:17:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:00,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:00,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:00,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 11:17:00,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:00,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 11:17:00,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:00,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:00,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 11:17:00,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 11:17:00,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:00,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:17:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:00,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:00,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:00,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:17:00,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:00,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:00,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:00,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:00,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:00,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:17:00,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:00,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662289337] [2020-10-13 11:17:00,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:00,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 11:17:00,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526028639] [2020-10-13 11:17:00,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 11:17:00,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:00,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 11:17:00,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:17:00,873 INFO L87 Difference]: Start difference. First operand 835 states and 1138 transitions. Second operand 12 states. [2020-10-13 11:17:04,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:04,465 INFO L93 Difference]: Finished difference Result 986 states and 1388 transitions. [2020-10-13 11:17:04,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 11:17:04,466 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 61 [2020-10-13 11:17:04,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:04,471 INFO L225 Difference]: With dead ends: 986 [2020-10-13 11:17:04,471 INFO L226 Difference]: Without dead ends: 960 [2020-10-13 11:17:04,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-13 11:17:04,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2020-10-13 11:17:04,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 835. [2020-10-13 11:17:04,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 835 states. [2020-10-13 11:17:04,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1138 transitions. [2020-10-13 11:17:04,544 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1138 transitions. Word has length 61 [2020-10-13 11:17:04,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:04,544 INFO L479 AbstractCegarLoop]: Abstraction has 835 states and 1138 transitions. [2020-10-13 11:17:04,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 11:17:04,544 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1138 transitions. [2020-10-13 11:17:04,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 11:17:04,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:04,547 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] [2020-10-13 11:17:04,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 11:17:04,548 INFO L427 AbstractCegarLoop]: === Iteration 28 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:04,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:04,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1468333076, now seen corresponding path program 1 times [2020-10-13 11:17:04,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:04,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664878338] [2020-10-13 11:17:04,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:04,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:04,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:04,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:05,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:05,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:06,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:09,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:09,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 11:17:09,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 11:17:09,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4929 [2020-10-13 11:17:09,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 11:17:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:17:09,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:09,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:09,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:09,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:09,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:09,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:09,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:09,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:09,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:09,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:09,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:09,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:09,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:09,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:09,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:09,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:09,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:09,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:09,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:09,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:09,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:09,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:09,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:09,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:09,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:09,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:09,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:09,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:09,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:09,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:09,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:09,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:09,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:09,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:09,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:17:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:09,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:09,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:09,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:09,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 11:17:09,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:17:09,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-13 11:17:09,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 11:17:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:17:09,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:09,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 11:17:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:09,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:09,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:10,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:10,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 11:17:10,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:17:10,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-13 11:17:10,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:10,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:10,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 11:17:10,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:17:10,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:10,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 11:17:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:10,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:10,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:10,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:17:10,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:10,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:17:10,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:10,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:17:10,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:10,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:17:10,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:10,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 11:17:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:10,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:10,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:10,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 11:17:10,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:10,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:10,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:10,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:10,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:17:10,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:10,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:10,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:17:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:10,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:10,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:10,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:17:10,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:10,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 11:17:10,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:10,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:10,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:10,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664878338] [2020-10-13 11:17:10,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:10,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 11:17:10,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756957716] [2020-10-13 11:17:10,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 11:17:10,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:10,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 11:17:10,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-13 11:17:10,236 INFO L87 Difference]: Start difference. First operand 835 states and 1138 transitions. Second operand 13 states. [2020-10-13 11:17:13,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:13,685 INFO L93 Difference]: Finished difference Result 1013 states and 1430 transitions. [2020-10-13 11:17:13,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 11:17:13,688 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 63 [2020-10-13 11:17:13,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:13,691 INFO L225 Difference]: With dead ends: 1013 [2020-10-13 11:17:13,691 INFO L226 Difference]: Without dead ends: 970 [2020-10-13 11:17:13,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-10-13 11:17:13,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-10-13 11:17:13,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 839. [2020-10-13 11:17:13,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 839 states. [2020-10-13 11:17:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1146 transitions. [2020-10-13 11:17:13,779 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1146 transitions. Word has length 63 [2020-10-13 11:17:13,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:13,780 INFO L479 AbstractCegarLoop]: Abstraction has 839 states and 1146 transitions. [2020-10-13 11:17:13,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 11:17:13,780 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1146 transitions. [2020-10-13 11:17:13,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 11:17:13,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:13,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:17:13,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 11:17:13,783 INFO L427 AbstractCegarLoop]: === Iteration 29 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:13,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:13,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1900643938, now seen corresponding path program 1 times [2020-10-13 11:17:13,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:13,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180060782] [2020-10-13 11:17:13,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:13,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:13,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:13,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:14,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:14,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:15,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:15,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 11:17:15,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 11:17:15,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1483 [2020-10-13 11:17:15,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 11:17:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:17:15,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:15,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:15,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:15,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:15,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:15,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:15,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:15,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:15,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:15,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:15,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:15,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:15,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:15,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:15,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:15,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:15,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:15,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:15,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:15,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:15,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:15,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:15,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:15,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:15,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:15,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:15,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:15,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:15,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:15,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:15,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:15,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:15,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:15,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:15,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:17:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:15,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:15,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:15,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 11:17:15,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:15,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 11:17:15,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:15,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:15,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 11:17:15,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:17:15,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:15,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 11:17:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:15,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:15,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:15,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 11:17:15,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:15,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 11:17:15,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 11:17:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:17:15,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:15,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 11:17:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:15,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:15,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:15,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 11:17:15,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:15,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 11:17:15,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:15,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:15,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 11:17:15,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 11:17:15,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:15,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:17:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:15,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:15,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:15,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:17:15,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:15,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:15,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:15,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:15,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:15,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:17:15,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:15,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180060782] [2020-10-13 11:17:15,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:15,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 11:17:15,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653175566] [2020-10-13 11:17:15,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 11:17:15,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:15,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 11:17:15,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:17:15,662 INFO L87 Difference]: Start difference. First operand 839 states and 1146 transitions. Second operand 12 states. [2020-10-13 11:17:18,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:18,583 INFO L93 Difference]: Finished difference Result 994 states and 1402 transitions. [2020-10-13 11:17:18,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 11:17:18,584 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 61 [2020-10-13 11:17:18,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:18,589 INFO L225 Difference]: With dead ends: 994 [2020-10-13 11:17:18,589 INFO L226 Difference]: Without dead ends: 966 [2020-10-13 11:17:18,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-13 11:17:18,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2020-10-13 11:17:18,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 839. [2020-10-13 11:17:18,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 839 states. [2020-10-13 11:17:18,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1143 transitions. [2020-10-13 11:17:18,679 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1143 transitions. Word has length 61 [2020-10-13 11:17:18,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:18,679 INFO L479 AbstractCegarLoop]: Abstraction has 839 states and 1143 transitions. [2020-10-13 11:17:18,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 11:17:18,679 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1143 transitions. [2020-10-13 11:17:18,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 11:17:18,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:18,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:17:18,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 11:17:18,682 INFO L427 AbstractCegarLoop]: === Iteration 30 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:18,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:18,683 INFO L82 PathProgramCache]: Analyzing trace with hash -558865318, now seen corresponding path program 1 times [2020-10-13 11:17:18,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:18,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127431706] [2020-10-13 11:17:18,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:18,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:18,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:19,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:19,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:19,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 11:17:19,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:17:19,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 883 [2020-10-13 11:17:19,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:19,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 11:17:19,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 11:17:19,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 11:17:19,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:19,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:19,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:19,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:19,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:19,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:19,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:19,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:19,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:19,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:19,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:19,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:19,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:19,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:19,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:19,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:19,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:19,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:19,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:19,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:19,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:19,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:19,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:19,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:19,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:19,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:19,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:19,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:19,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:19,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:19,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:19,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:17:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:19,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:19,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:19,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 11:17:19,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:19,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 11:17:19,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 11:17:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 11:17:19,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:19,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 11:17:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:19,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:19,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:19,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 11:17:19,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:19,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 11:17:19,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:19,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:17:19,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:19,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 11:17:19,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:20,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-13 11:17:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:20,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:20,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:20,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 11:17:20,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:20,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 11:17:20,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:20,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:17:20,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:20,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 11:17:20,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:20,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:17:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:20,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:20,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:20,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:17:20,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:20,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:20,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:20,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:20,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:20,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:17:20,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:20,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:20,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127431706] [2020-10-13 11:17:20,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:20,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-13 11:17:20,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872896396] [2020-10-13 11:17:20,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 11:17:20,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:20,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 11:17:20,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-13 11:17:20,163 INFO L87 Difference]: Start difference. First operand 839 states and 1143 transitions. Second operand 19 states. [2020-10-13 11:17:25,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:25,304 INFO L93 Difference]: Finished difference Result 988 states and 1393 transitions. [2020-10-13 11:17:25,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 11:17:25,304 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-10-13 11:17:25,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:25,309 INFO L225 Difference]: With dead ends: 988 [2020-10-13 11:17:25,309 INFO L226 Difference]: Without dead ends: 963 [2020-10-13 11:17:25,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2020-10-13 11:17:25,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-10-13 11:17:25,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 839. [2020-10-13 11:17:25,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 839 states. [2020-10-13 11:17:25,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1140 transitions. [2020-10-13 11:17:25,401 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1140 transitions. Word has length 58 [2020-10-13 11:17:25,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:25,402 INFO L479 AbstractCegarLoop]: Abstraction has 839 states and 1140 transitions. [2020-10-13 11:17:25,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 11:17:25,402 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1140 transitions. [2020-10-13 11:17:25,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 11:17:25,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:25,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:17:25,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 11:17:25,405 INFO L427 AbstractCegarLoop]: === Iteration 31 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:25,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:25,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1710737410, now seen corresponding path program 1 times [2020-10-13 11:17:25,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:25,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133454099] [2020-10-13 11:17:25,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:25,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:25,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:25,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:26,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:26,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:26,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 11:17:26,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 11:17:26,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1254 [2020-10-13 11:17:26,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:26,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:17:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 11:17:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:17:26,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:26,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:26,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:26,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:26,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:26,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:26,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:26,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:26,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:26,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:26,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:26,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:26,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:26,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:26,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:26,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:26,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:26,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:26,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:26,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:26,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:26,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:26,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:26,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:26,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:26,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:26,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:26,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:26,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 11:17:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:26,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:26,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:26,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 11:17:26,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:26,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 11:17:26,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:26,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:17:26,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 11:17:26,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:17:26,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:26,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-13 11:17:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:26,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:26,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:26,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 11:17:26,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:26,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 11:17:26,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:26,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:17:26,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 11:17:26,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:26,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 11:17:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:26,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:26,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:26,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:26,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:26,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:26,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:26,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:26,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:26,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:26,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:26,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:26,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133454099] [2020-10-13 11:17:26,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:26,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 11:17:26,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069090675] [2020-10-13 11:17:26,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 11:17:26,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:26,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 11:17:26,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-13 11:17:26,999 INFO L87 Difference]: Start difference. First operand 839 states and 1140 transitions. Second operand 11 states. [2020-10-13 11:17:30,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:30,345 INFO L93 Difference]: Finished difference Result 1165 states and 1635 transitions. [2020-10-13 11:17:30,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 11:17:30,346 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2020-10-13 11:17:30,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:30,349 INFO L225 Difference]: With dead ends: 1165 [2020-10-13 11:17:30,349 INFO L226 Difference]: Without dead ends: 966 [2020-10-13 11:17:30,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:17:30,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2020-10-13 11:17:30,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 842. [2020-10-13 11:17:30,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2020-10-13 11:17:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1141 transitions. [2020-10-13 11:17:30,428 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1141 transitions. Word has length 61 [2020-10-13 11:17:30,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:30,428 INFO L479 AbstractCegarLoop]: Abstraction has 842 states and 1141 transitions. [2020-10-13 11:17:30,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 11:17:30,429 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1141 transitions. [2020-10-13 11:17:30,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 11:17:30,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:30,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:17:30,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 11:17:30,431 INFO L427 AbstractCegarLoop]: === Iteration 32 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:30,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:30,432 INFO L82 PathProgramCache]: Analyzing trace with hash -567790580, now seen corresponding path program 1 times [2020-10-13 11:17:30,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:30,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938317681] [2020-10-13 11:17:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:30,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:30,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:30,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:30,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:30,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:30,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 11:17:30,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 11:17:30,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-13 11:17:30,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:30,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:30,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 11:17:30,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:17:30,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:30,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:30,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:30,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:30,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:30,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:30,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:17:30,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:30,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:30,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:30,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:30,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:30,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:30,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:30,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:30,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:30,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:30,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:30,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:30,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:30,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:30,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:30,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:30,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:30,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:30,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:30,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:30,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:30,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:30,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:30,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:30,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:30,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:31,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:17:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:31,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:31,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:31,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 11:17:31,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:31,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 11:17:31,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:17:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:17:31,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:31,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:17:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:31,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:31,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:31,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 11:17:31,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:31,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 11:17:31,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:31,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:31,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 11:17:31,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:17:31,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:31,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 11:17:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:31,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:31,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:31,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:17:31,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:31,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:31,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:31,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:31,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 11:17:31,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:31,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:31,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:31,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938317681] [2020-10-13 11:17:31,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:31,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 11:17:31,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498420101] [2020-10-13 11:17:31,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 11:17:31,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:31,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 11:17:31,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-13 11:17:31,115 INFO L87 Difference]: Start difference. First operand 842 states and 1141 transitions. Second operand 9 states. [2020-10-13 11:17:33,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:33,992 INFO L93 Difference]: Finished difference Result 1000 states and 1396 transitions. [2020-10-13 11:17:33,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 11:17:33,992 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-13 11:17:33,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:33,995 INFO L225 Difference]: With dead ends: 1000 [2020-10-13 11:17:33,995 INFO L226 Difference]: Without dead ends: 968 [2020-10-13 11:17:33,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-13 11:17:33,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-10-13 11:17:34,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 842. [2020-10-13 11:17:34,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2020-10-13 11:17:34,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1140 transitions. [2020-10-13 11:17:34,062 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1140 transitions. Word has length 58 [2020-10-13 11:17:34,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:34,062 INFO L479 AbstractCegarLoop]: Abstraction has 842 states and 1140 transitions. [2020-10-13 11:17:34,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 11:17:34,062 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1140 transitions. [2020-10-13 11:17:34,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 11:17:34,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:34,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:17:34,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 11:17:34,064 INFO L427 AbstractCegarLoop]: === Iteration 33 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:34,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:34,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1355437454, now seen corresponding path program 1 times [2020-10-13 11:17:34,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:34,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547525477] [2020-10-13 11:17:34,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:34,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:34,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:34,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:34,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:34,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 11:17:34,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:17:34,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-13 11:17:34,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:17:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 11:17:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 11:17:34,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:34,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:34,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:34,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:34,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:34,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:34,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:17:34,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:34,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:34,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:34,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:34,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:34,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:34,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:34,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:34,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:34,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:34,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:34,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:34,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:34,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:34,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:34,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:34,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:34,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:34,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:34,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:34,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:34,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:17:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:34,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:34,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:34,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 11:17:34,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:34,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 11:17:34,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:34,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:17:34,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:34,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 11:17:34,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:34,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:17:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:34,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:34,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:34,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 11:17:34,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:34,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 11:17:34,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:34,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:34,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:34,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 11:17:34,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:34,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 11:17:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:34,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:34,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:34,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:17:34,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:34,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:34,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:34,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:34,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:34,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:17:34,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:34,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547525477] [2020-10-13 11:17:34,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:34,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-13 11:17:34,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914825750] [2020-10-13 11:17:34,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 11:17:34,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:34,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 11:17:34,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-13 11:17:34,835 INFO L87 Difference]: Start difference. First operand 842 states and 1140 transitions. Second operand 15 states. [2020-10-13 11:17:39,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:39,018 INFO L93 Difference]: Finished difference Result 988 states and 1384 transitions. [2020-10-13 11:17:39,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 11:17:39,019 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 58 [2020-10-13 11:17:39,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:39,023 INFO L225 Difference]: With dead ends: 988 [2020-10-13 11:17:39,023 INFO L226 Difference]: Without dead ends: 951 [2020-10-13 11:17:39,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-13 11:17:39,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2020-10-13 11:17:39,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 830. [2020-10-13 11:17:39,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 830 states. [2020-10-13 11:17:39,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1120 transitions. [2020-10-13 11:17:39,120 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1120 transitions. Word has length 58 [2020-10-13 11:17:39,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:39,120 INFO L479 AbstractCegarLoop]: Abstraction has 830 states and 1120 transitions. [2020-10-13 11:17:39,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 11:17:39,121 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1120 transitions. [2020-10-13 11:17:39,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 11:17:39,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:39,124 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, 1, 1, 1, 1, 1, 1] [2020-10-13 11:17:39,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 11:17:39,124 INFO L427 AbstractCegarLoop]: === Iteration 34 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:39,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:39,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1190823714, now seen corresponding path program 1 times [2020-10-13 11:17:39,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:39,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324182984] [2020-10-13 11:17:39,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:39,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:39,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:39,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 11:17:39,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:39,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-13 11:17:39,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:39,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 11:17:39,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-13 11:17:39,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 11:17:39,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:39,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:39,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:39,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:39,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:39,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:39,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 11:17:39,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:39,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:39,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:39,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:39,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:39,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:39,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:39,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:17:39,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:39,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:39,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:17:39,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:39,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:39,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:39,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:39,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:39,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:17:39,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:39,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:39,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:39,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:39,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:17:39,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:17:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:39,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:39,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:39,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 11:17:39,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:39,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 11:17:39,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:39,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 11:17:39,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:39,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 11:17:39,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:17:39,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:39,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:39,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:39,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 11:17:39,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:39,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 11:17:39,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:39,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:17:39,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:39,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 11:17:39,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:17:39,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:17:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:39,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:39,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:39,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 11:17:39,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:39,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 11:17:39,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:39,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:39,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:39,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 11:17:39,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:39,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:39,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324182984] [2020-10-13 11:17:39,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:39,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-13 11:17:39,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204932242] [2020-10-13 11:17:39,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 11:17:39,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:39,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 11:17:39,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-13 11:17:39,909 INFO L87 Difference]: Start difference. First operand 830 states and 1120 transitions. Second operand 16 states. [2020-10-13 11:17:43,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:43,764 INFO L93 Difference]: Finished difference Result 968 states and 1352 transitions. [2020-10-13 11:17:43,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 11:17:43,765 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-10-13 11:17:43,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:43,768 INFO L225 Difference]: With dead ends: 968 [2020-10-13 11:17:43,768 INFO L226 Difference]: Without dead ends: 948 [2020-10-13 11:17:43,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-10-13 11:17:43,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2020-10-13 11:17:43,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 827. [2020-10-13 11:17:43,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2020-10-13 11:17:43,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1115 transitions. [2020-10-13 11:17:43,824 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1115 transitions. Word has length 58 [2020-10-13 11:17:43,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:43,824 INFO L479 AbstractCegarLoop]: Abstraction has 827 states and 1115 transitions. [2020-10-13 11:17:43,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 11:17:43,825 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1115 transitions. [2020-10-13 11:17:43,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 11:17:43,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:43,826 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] [2020-10-13 11:17:43,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 11:17:43,826 INFO L427 AbstractCegarLoop]: === Iteration 35 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:43,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:43,827 INFO L82 PathProgramCache]: Analyzing trace with hash 612192754, now seen corresponding path program 1 times [2020-10-13 11:17:43,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:43,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560649727] [2020-10-13 11:17:43,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:43,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:43,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:43,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:43,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:44,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:45,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:45,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 11:17:45,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 11:17:45,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1257 [2020-10-13 11:17:45,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:45,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:17:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 11:17:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 11:17:45,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:45,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:45,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:45,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:45,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:45,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:45,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:45,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:45,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:45,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:45,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:45,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:45,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:45,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:45,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:17:45,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:45,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:45,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:45,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:45,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:45,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:45,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:45,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:45,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:45,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:45,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:45,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:45,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:45,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:45,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:45,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:45,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:17:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:45,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:45,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:45,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 11:17:45,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:45,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 11:17:45,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:45,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:17:45,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 11:17:45,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 11:17:45,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:45,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-13 11:17:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:45,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:45,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:45,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 11:17:45,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:45,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 11:17:45,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:45,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:17:45,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 11:17:45,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 11:17:45,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:45,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 11:17:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:45,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:45,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:45,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 11:17:45,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:45,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 11:17:45,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:45,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:17:45,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 11:17:45,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:17:45,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:45,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 11:17:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:45,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:45,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:45,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:17:45,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:45,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:45,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 11:17:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:45,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:45,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:45,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560649727] [2020-10-13 11:17:45,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:45,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 11:17:45,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298212025] [2020-10-13 11:17:45,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 11:17:45,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:45,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 11:17:45,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 11:17:45,372 INFO L87 Difference]: Start difference. First operand 827 states and 1115 transitions. Second operand 11 states. [2020-10-13 11:17:47,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:47,677 INFO L93 Difference]: Finished difference Result 1114 states and 1586 transitions. [2020-10-13 11:17:47,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 11:17:47,678 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-10-13 11:17:47,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:47,683 INFO L225 Difference]: With dead ends: 1114 [2020-10-13 11:17:47,683 INFO L226 Difference]: Without dead ends: 998 [2020-10-13 11:17:47,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-13 11:17:47,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2020-10-13 11:17:47,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 834. [2020-10-13 11:17:47,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 834 states. [2020-10-13 11:17:47,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1131 transitions. [2020-10-13 11:17:47,774 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1131 transitions. Word has length 59 [2020-10-13 11:17:47,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:47,774 INFO L479 AbstractCegarLoop]: Abstraction has 834 states and 1131 transitions. [2020-10-13 11:17:47,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 11:17:47,775 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1131 transitions. [2020-10-13 11:17:47,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 11:17:47,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:47,777 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] [2020-10-13 11:17:47,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 11:17:47,778 INFO L427 AbstractCegarLoop]: === Iteration 36 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:47,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:47,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1313792628, now seen corresponding path program 1 times [2020-10-13 11:17:47,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:47,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545670415] [2020-10-13 11:17:47,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:47,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:47,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:47,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:48,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:48,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:48,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 11:17:48,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 11:17:48,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 624 [2020-10-13 11:17:48,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:48,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:17:48,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 11:17:48,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 11:17:48,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:48,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:48,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:48,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:48,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:48,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:48,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:48,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:48,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:48,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:48,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:48,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:48,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:48,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:48,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:48,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:48,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:48,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:48,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:48,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:48,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:48,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:48,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:48,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:48,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:48,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:48,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:48,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:48,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:48,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:48,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:48,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:48,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:48,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:48,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:17:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:48,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:48,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:48,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:48,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 11:17:48,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:17:48,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 11:17:48,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 11:17:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 11:17:48,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:48,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-13 11:17:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:48,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:48,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:48,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 11:17:48,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:48,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 11:17:48,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:17:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 11:17:48,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:48,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 11:17:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:48,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:48,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:48,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 11:17:48,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:48,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:17:48,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:48,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:17:48,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:17:48,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:48,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 11:17:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:48,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:48,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:48,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:17:48,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:48,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:48,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:48,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:48,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:48,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:17:48,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:48,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:48,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545670415] [2020-10-13 11:17:48,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:48,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-13 11:17:48,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497013949] [2020-10-13 11:17:48,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 11:17:48,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:48,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 11:17:48,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-13 11:17:48,885 INFO L87 Difference]: Start difference. First operand 834 states and 1131 transitions. Second operand 18 states. [2020-10-13 11:17:53,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:53,598 INFO L93 Difference]: Finished difference Result 1026 states and 1461 transitions. [2020-10-13 11:17:53,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 11:17:53,598 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 59 [2020-10-13 11:17:53,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:53,601 INFO L225 Difference]: With dead ends: 1026 [2020-10-13 11:17:53,602 INFO L226 Difference]: Without dead ends: 971 [2020-10-13 11:17:53,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2020-10-13 11:17:53,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-10-13 11:17:53,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 838. [2020-10-13 11:17:53,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 838 states. [2020-10-13 11:17:53,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1149 transitions. [2020-10-13 11:17:53,669 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1149 transitions. Word has length 59 [2020-10-13 11:17:53,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:53,669 INFO L479 AbstractCegarLoop]: Abstraction has 838 states and 1149 transitions. [2020-10-13 11:17:53,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 11:17:53,670 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1149 transitions. [2020-10-13 11:17:53,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 11:17:53,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:53,671 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] [2020-10-13 11:17:53,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 11:17:53,671 INFO L427 AbstractCegarLoop]: === Iteration 37 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:53,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:53,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1517760627, now seen corresponding path program 1 times [2020-10-13 11:17:53,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:53,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137444406] [2020-10-13 11:17:53,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:53,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:53,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:53,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:53,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:54,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:54,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 11:17:54,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 11:17:54,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-13 11:17:54,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 11:17:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:17:54,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:54,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:54,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:54,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:54,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:54,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:54,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:17:54,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:54,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:54,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:54,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:54,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:54,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:54,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:54,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:54,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:54,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:54,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:54,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:54,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:54,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:54,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:54,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:54,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:54,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:54,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:54,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:54,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:54,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:54,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:17:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:54,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:54,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:54,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 11:17:54,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:54,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 11:17:54,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:54,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:54,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 11:17:54,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:17:54,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:54,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:17:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:54,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:54,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:54,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 11:17:54,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:54,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 11:17:54,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:54,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:54,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 11:17:54,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:17:54,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:54,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 11:17:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:54,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:54,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:54,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:17:54,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:54,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:54,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:54,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:54,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 11:17:54,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:54,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:54,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:54,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137444406] [2020-10-13 11:17:54,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:54,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 11:17:54,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967992287] [2020-10-13 11:17:54,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 11:17:54,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:54,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 11:17:54,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-13 11:17:54,407 INFO L87 Difference]: Start difference. First operand 838 states and 1149 transitions. Second operand 9 states. [2020-10-13 11:17:56,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:56,967 INFO L93 Difference]: Finished difference Result 997 states and 1418 transitions. [2020-10-13 11:17:56,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 11:17:56,968 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-13 11:17:56,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:56,971 INFO L225 Difference]: With dead ends: 997 [2020-10-13 11:17:56,971 INFO L226 Difference]: Without dead ends: 965 [2020-10-13 11:17:56,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-13 11:17:56,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2020-10-13 11:17:57,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 838. [2020-10-13 11:17:57,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 838 states. [2020-10-13 11:17:57,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1148 transitions. [2020-10-13 11:17:57,029 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1148 transitions. Word has length 59 [2020-10-13 11:17:57,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:57,029 INFO L479 AbstractCegarLoop]: Abstraction has 838 states and 1148 transitions. [2020-10-13 11:17:57,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 11:17:57,029 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1148 transitions. [2020-10-13 11:17:57,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 11:17:57,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:57,031 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] [2020-10-13 11:17:57,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 11:17:57,032 INFO L427 AbstractCegarLoop]: === Iteration 38 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:57,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:57,032 INFO L82 PathProgramCache]: Analyzing trace with hash -853978635, now seen corresponding path program 1 times [2020-10-13 11:17:57,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:57,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015349584] [2020-10-13 11:17:57,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:57,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:57,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:57,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:57,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:57,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 11:17:57,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:17:57,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-13 11:17:57,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:17:57,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 11:17:57,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 11:17:57,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:57,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:57,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:57,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:57,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:57,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:57,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:17:57,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:57,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:57,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:57,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:57,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:57,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:57,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:57,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:57,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:57,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:57,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:57,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:57,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:57,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:57,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:57,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:57,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:57,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:57,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:57,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:57,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:57,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:57,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:57,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:57,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:57,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:57,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:57,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:17:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:57,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:57,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:57,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 11:17:57,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:57,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 11:17:57,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:57,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:17:57,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:57,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 11:17:57,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:57,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:17:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:57,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:57,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:57,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 11:17:57,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:57,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 11:17:57,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:57,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:57,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:57,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 11:17:57,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:57,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 11:17:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:57,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:57,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:57,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:17:57,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:57,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:57,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:57,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:57,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:57,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:17:57,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:57,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:57,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015349584] [2020-10-13 11:17:57,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:57,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-13 11:17:57,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683874864] [2020-10-13 11:17:57,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 11:17:57,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:57,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 11:17:57,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-13 11:17:57,744 INFO L87 Difference]: Start difference. First operand 838 states and 1148 transitions. Second operand 15 states. [2020-10-13 11:18:01,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:01,414 INFO L93 Difference]: Finished difference Result 1002 states and 1433 transitions. [2020-10-13 11:18:01,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 11:18:01,415 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 59 [2020-10-13 11:18:01,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:01,419 INFO L225 Difference]: With dead ends: 1002 [2020-10-13 11:18:01,419 INFO L226 Difference]: Without dead ends: 952 [2020-10-13 11:18:01,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-13 11:18:01,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2020-10-13 11:18:01,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 830. [2020-10-13 11:18:01,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 830 states. [2020-10-13 11:18:01,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1133 transitions. [2020-10-13 11:18:01,491 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1133 transitions. Word has length 59 [2020-10-13 11:18:01,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:01,491 INFO L479 AbstractCegarLoop]: Abstraction has 830 states and 1133 transitions. [2020-10-13 11:18:01,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 11:18:01,491 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1133 transitions. [2020-10-13 11:18:01,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 11:18:01,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:01,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:18:01,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 11:18:01,493 INFO L427 AbstractCegarLoop]: === Iteration 39 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:01,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:01,494 INFO L82 PathProgramCache]: Analyzing trace with hash -30740856, now seen corresponding path program 1 times [2020-10-13 11:18:01,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:01,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434480729] [2020-10-13 11:18:01,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:01,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:01,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:01,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:01,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:02,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:03,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:03,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 11:18:03,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 11:18:03,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1527 [2020-10-13 11:18:03,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:03,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:03,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 11:18:03,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:18:03,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:03,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:03,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:03,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:03,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:03,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:03,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:03,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:03,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:03,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:03,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:03,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:03,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:03,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:03,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:03,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:03,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:03,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:03,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:03,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:03,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:03,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:03,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:03,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:03,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:03,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:03,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:03,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:03,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:03,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:03,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:18:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:03,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:03,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:03,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 11:18:03,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:03,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 11:18:03,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:03,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 11:18:03,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:18:03,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:03,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 11:18:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:03,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:03,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:03,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 11:18:03,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:03,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 11:18:03,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:03,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:03,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 11:18:03,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:18:03,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:03,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 11:18:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:03,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:03,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:03,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 11:18:03,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:03,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 11:18:03,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 11:18:03,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 11:18:03,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:03,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:18:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:03,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:03,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:03,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:18:03,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:03,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:03,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:03,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:18:03,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:03,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434480729] [2020-10-13 11:18:03,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:03,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 11:18:03,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730336062] [2020-10-13 11:18:03,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 11:18:03,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:03,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 11:18:03,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:18:03,501 INFO L87 Difference]: Start difference. First operand 830 states and 1133 transitions. Second operand 12 states. [2020-10-13 11:18:06,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:06,448 INFO L93 Difference]: Finished difference Result 980 states and 1388 transitions. [2020-10-13 11:18:06,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 11:18:06,449 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-10-13 11:18:06,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:06,453 INFO L225 Difference]: With dead ends: 980 [2020-10-13 11:18:06,453 INFO L226 Difference]: Without dead ends: 954 [2020-10-13 11:18:06,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-13 11:18:06,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2020-10-13 11:18:06,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 830. [2020-10-13 11:18:06,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 830 states. [2020-10-13 11:18:06,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1132 transitions. [2020-10-13 11:18:06,555 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1132 transitions. Word has length 62 [2020-10-13 11:18:06,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:06,555 INFO L479 AbstractCegarLoop]: Abstraction has 830 states and 1132 transitions. [2020-10-13 11:18:06,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 11:18:06,555 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1132 transitions. [2020-10-13 11:18:06,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 11:18:06,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:06,558 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] [2020-10-13 11:18:06,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 11:18:06,558 INFO L427 AbstractCegarLoop]: === Iteration 40 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:06,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:06,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1513603883, now seen corresponding path program 1 times [2020-10-13 11:18:06,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:06,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905031452] [2020-10-13 11:18:06,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:06,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:06,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:06,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:06,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:06,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:08,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:08,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 11:18:08,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 11:18:08,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1453 [2020-10-13 11:18:08,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:08,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:08,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 11:18:08,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:18:08,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:08,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:08,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:08,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:08,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:08,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:08,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:08,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:08,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:08,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:08,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:08,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:08,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:08,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:08,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:08,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:08,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:08,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:08,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:08,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:08,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:08,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:08,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:08,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:08,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:08,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:08,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:08,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:08,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:08,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:08,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:08,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:08,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:08,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:08,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:18:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:08,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:08,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:08,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 11:18:08,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:08,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 11:18:08,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:08,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:08,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:18:08,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:18:08,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:08,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 11:18:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:08,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:08,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:08,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 11:18:08,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:08,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 11:18:08,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:08,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:08,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 11:18:08,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:18:08,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:08,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 11:18:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:08,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:08,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:08,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 11:18:08,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:08,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 11:18:08,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:08,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:08,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 11:18:08,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 11:18:08,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:08,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:18:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:08,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:08,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:08,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:18:08,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:08,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:08,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:08,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:08,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:08,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:18:08,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:08,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:08,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905031452] [2020-10-13 11:18:08,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:08,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 11:18:08,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828340752] [2020-10-13 11:18:08,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 11:18:08,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:08,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 11:18:08,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:18:08,405 INFO L87 Difference]: Start difference. First operand 830 states and 1132 transitions. Second operand 12 states. [2020-10-13 11:18:11,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:11,469 INFO L93 Difference]: Finished difference Result 982 states and 1391 transitions. [2020-10-13 11:18:11,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 11:18:11,470 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-13 11:18:11,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:11,474 INFO L225 Difference]: With dead ends: 982 [2020-10-13 11:18:11,474 INFO L226 Difference]: Without dead ends: 956 [2020-10-13 11:18:11,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-13 11:18:11,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2020-10-13 11:18:11,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 830. [2020-10-13 11:18:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 830 states. [2020-10-13 11:18:11,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1132 transitions. [2020-10-13 11:18:11,534 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1132 transitions. Word has length 63 [2020-10-13 11:18:11,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:11,535 INFO L479 AbstractCegarLoop]: Abstraction has 830 states and 1132 transitions. [2020-10-13 11:18:11,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 11:18:11,535 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1132 transitions. [2020-10-13 11:18:11,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 11:18:11,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:11,537 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] [2020-10-13 11:18:11,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 11:18:11,537 INFO L427 AbstractCegarLoop]: === Iteration 41 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:11,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:11,538 INFO L82 PathProgramCache]: Analyzing trace with hash 256824721, now seen corresponding path program 1 times [2020-10-13 11:18:11,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:11,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247976125] [2020-10-13 11:18:11,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:11,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:11,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:11,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:11,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:11,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:12,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:14,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:14,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 11:18:14,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 11:18:14,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3076 [2020-10-13 11:18:14,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:14,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:14,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 11:18:14,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:18:14,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:14,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:14,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:14,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:14,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:14,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:14,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:14,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:14,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:14,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:14,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:14,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:14,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:14,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:14,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:14,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:14,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:14,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:14,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:14,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:14,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:14,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:14,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:14,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:14,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:14,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:14,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:14,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:14,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:14,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:14,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:14,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:14,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:14,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:14,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:18:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:14,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:14,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:14,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:14,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 11:18:14,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:18:14,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-13 11:18:14,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:14,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:14,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:18:14,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:18:14,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:14,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 11:18:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:14,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:15,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:15,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:15,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 11:18:15,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:18:15,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-13 11:18:15,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:15,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:18:15,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 11:18:15,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:18:15,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:15,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-13 11:18:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:15,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:15,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:15,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:18:15,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:15,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:18:15,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:15,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:18:15,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:15,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:18:15,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:15,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 11:18:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:15,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:15,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:15,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 11:18:15,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:15,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:15,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:18:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:15,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:15,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:18:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:15,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:15,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:15,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:18:15,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:15,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:15,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:15,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:15,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:15,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:15,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:15,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:15,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247976125] [2020-10-13 11:18:15,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:15,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 11:18:15,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550842238] [2020-10-13 11:18:15,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 11:18:15,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:15,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 11:18:15,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-13 11:18:15,254 INFO L87 Difference]: Start difference. First operand 830 states and 1132 transitions. Second operand 13 states. [2020-10-13 11:18:18,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:18,371 INFO L93 Difference]: Finished difference Result 1004 states and 1419 transitions. [2020-10-13 11:18:18,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 11:18:18,372 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 65 [2020-10-13 11:18:18,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:18,376 INFO L225 Difference]: With dead ends: 1004 [2020-10-13 11:18:18,377 INFO L226 Difference]: Without dead ends: 961 [2020-10-13 11:18:18,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-10-13 11:18:18,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2020-10-13 11:18:18,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 832. [2020-10-13 11:18:18,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 832 states. [2020-10-13 11:18:18,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1134 transitions. [2020-10-13 11:18:18,443 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1134 transitions. Word has length 65 [2020-10-13 11:18:18,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:18,443 INFO L479 AbstractCegarLoop]: Abstraction has 832 states and 1134 transitions. [2020-10-13 11:18:18,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 11:18:18,443 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1134 transitions. [2020-10-13 11:18:18,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 11:18:18,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:18,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:18:18,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 11:18:18,445 INFO L427 AbstractCegarLoop]: === Iteration 42 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:18,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:18,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1440786882, now seen corresponding path program 1 times [2020-10-13 11:18:18,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:18,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335959527] [2020-10-13 11:18:18,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:18,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:18,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:18,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:19,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:19,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 11:18:19,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:18:19,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-10-13 11:18:19,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:19,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 11:18:19,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 11:18:19,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 11:18:19,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:19,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:19,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:19,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:19,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:19,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:19,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:19,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:19,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:19,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:19,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:19,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:19,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:19,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:19,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:19,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:19,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:19,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:19,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:19,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:19,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:19,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:19,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:19,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:19,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:19,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:19,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:19,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:19,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:19,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:19,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:19,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:18:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:19,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:19,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:19,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 11:18:19,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:19,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 11:18:19,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:19,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 11:18:19,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:19,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 11:18:19,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:19,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 11:18:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:19,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:19,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:19,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 11:18:19,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:19,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 11:18:19,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:19,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:18:19,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:19,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 11:18:19,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:19,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-13 11:18:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:19,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:19,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:19,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:18:19,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:19,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:19,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:19,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:19,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:19,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:19,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:19,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 11:18:19,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:19,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 11:18:19,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:19,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:18:19,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:19,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 11:18:19,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:19,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:18:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:19,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:19,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:19,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:18:19,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:19,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:19,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:19,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:19,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:19,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:18:19,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:19,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:19,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335959527] [2020-10-13 11:18:19,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:19,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-13 11:18:19,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002992102] [2020-10-13 11:18:19,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 11:18:19,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:19,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 11:18:19,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2020-10-13 11:18:19,780 INFO L87 Difference]: Start difference. First operand 832 states and 1134 transitions. Second operand 20 states. [2020-10-13 11:18:24,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:18:24,983 INFO L93 Difference]: Finished difference Result 980 states and 1388 transitions. [2020-10-13 11:18:24,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 11:18:24,984 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 66 [2020-10-13 11:18:24,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:18:24,986 INFO L225 Difference]: With dead ends: 980 [2020-10-13 11:18:24,986 INFO L226 Difference]: Without dead ends: 955 [2020-10-13 11:18:24,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2020-10-13 11:18:24,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2020-10-13 11:18:25,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 830. [2020-10-13 11:18:25,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 830 states. [2020-10-13 11:18:25,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1130 transitions. [2020-10-13 11:18:25,086 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1130 transitions. Word has length 66 [2020-10-13 11:18:25,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:18:25,086 INFO L479 AbstractCegarLoop]: Abstraction has 830 states and 1130 transitions. [2020-10-13 11:18:25,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 11:18:25,087 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1130 transitions. [2020-10-13 11:18:25,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 11:18:25,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:18:25,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:18:25,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 11:18:25,089 INFO L427 AbstractCegarLoop]: === Iteration 43 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:18:25,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:18:25,089 INFO L82 PathProgramCache]: Analyzing trace with hash -8108602, now seen corresponding path program 1 times [2020-10-13 11:18:25,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:18:25,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269273330] [2020-10-13 11:18:25,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:18:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:25,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:25,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:25,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:25,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:25,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 11:18:25,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:18:25,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-13 11:18:25,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:25,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 11:18:25,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 11:18:25,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 11:18:25,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:25,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:18:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:25,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:25,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:25,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:25,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:25,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:25,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:25,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:25,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:25,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:25,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:25,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:18:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:25,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:25,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:25,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:25,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:25,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:18:25,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:25,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:25,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:25,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:25,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:25,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:18:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:25,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:25,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:25,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:18:25,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:25,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:25,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:25,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:18:25,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:25,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:18:25,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:25,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:18:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:25,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:25,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:25,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 11:18:25,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:25,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 11:18:25,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:25,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 11:18:25,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:25,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 11:18:25,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:26,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 11:18:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:26,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:26,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:26,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 11:18:26,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:26,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 11:18:26,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:26,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:18:26,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 11:18:26,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:26,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 11:18:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:26,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:26,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:26,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 11:18:26,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:26,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 11:18:26,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:26,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:18:26,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:26,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 11:18:26,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:26,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:18:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:18:26,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:18:26,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:18:26,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:18:26,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:18:26,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:18:26,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:18:26,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:18:26,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:18:26,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 11:18:26,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:18:26,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:18:26,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269273330] [2020-10-13 11:18:26,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:18:26,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-13 11:18:26,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298372283] [2020-10-13 11:18:26,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 11:18:26,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:18:26,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 11:18:26,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-13 11:18:26,368 INFO L87 Difference]: Start difference. First operand 830 states and 1130 transitions. Second operand 19 states.