/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=BIGGEST --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/floppy_simpl3.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 16:30:21,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 16:30:21,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 16:30:21,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 16:30:21,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 16:30:21,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 16:30:21,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 16:30:21,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 16:30:21,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 16:30:21,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 16:30:21,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 16:30:21,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 16:30:21,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 16:30:21,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 16:30:21,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 16:30:21,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 16:30:21,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 16:30:21,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 16:30:21,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 16:30:21,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 16:30:21,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 16:30:21,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 16:30:21,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 16:30:21,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 16:30:21,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 16:30:21,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 16:30:21,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 16:30:21,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 16:30:21,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 16:30:21,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 16:30:21,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 16:30:21,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 16:30:21,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 16:30:21,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 16:30:21,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 16:30:21,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 16:30:21,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 16:30:21,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 16:30:21,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 16:30:21,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 16:30:21,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 16:30:21,366 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 [2020-10-12 16:30:21,388 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 16:30:21,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 16:30:21,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 16:30:21,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 16:30:21,390 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 16:30:21,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 16:30:21,391 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 16:30:21,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 16:30:21,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 16:30:21,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 16:30:21,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 16:30:21,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 16:30:21,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 16:30:21,392 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 16:30:21,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 16:30:21,392 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 16:30:21,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 16:30:21,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 16:30:21,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 16:30:21,393 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 16:30:21,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 16:30:21,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:30:21,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 16:30:21,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 16:30:21,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 16:30:21,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 16:30:21,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 16:30:21,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 16:30:21,395 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 16:30:21,395 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 16:30:21,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 16:30:21,708 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 16:30:21,711 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 16:30:21,712 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 16:30:21,713 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 16:30:21,713 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c [2020-10-12 16:30:21,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5344f1e7c/bae7a73a668446d4aa88ac8dfacd49e5/FLAG489af1a55 [2020-10-12 16:30:22,295 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 16:30:22,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c [2020-10-12 16:30:22,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5344f1e7c/bae7a73a668446d4aa88ac8dfacd49e5/FLAG489af1a55 [2020-10-12 16:30:22,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5344f1e7c/bae7a73a668446d4aa88ac8dfacd49e5 [2020-10-12 16:30:22,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 16:30:22,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 16:30:22,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 16:30:22,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 16:30:22,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 16:30:22,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:30:22" (1/1) ... [2020-10-12 16:30:22,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae24509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:22, skipping insertion in model container [2020-10-12 16:30:22,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:30:22" (1/1) ... [2020-10-12 16:30:22,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 16:30:22,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 16:30:22,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:30:23,049 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 16:30:23,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:30:23,175 INFO L208 MainTranslator]: Completed translation [2020-10-12 16:30:23,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:23 WrapperNode [2020-10-12 16:30:23,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 16:30:23,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 16:30:23,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 16:30:23,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 16:30:23,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:23" (1/1) ... [2020-10-12 16:30:23,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:23" (1/1) ... [2020-10-12 16:30:23,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:23" (1/1) ... [2020-10-12 16:30:23,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:23" (1/1) ... [2020-10-12 16:30:23,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:23" (1/1) ... [2020-10-12 16:30:23,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:23" (1/1) ... [2020-10-12 16:30:23,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:23" (1/1) ... [2020-10-12 16:30:23,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 16:30:23,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 16:30:23,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 16:30:23,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 16:30:23,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:30:23,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 16:30:23,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 16:30:23,336 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-12 16:30:23,336 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-12 16:30:23,336 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2020-10-12 16:30:23,336 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2020-10-12 16:30:23,336 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2020-10-12 16:30:23,337 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2020-10-12 16:30:23,338 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2020-10-12 16:30:23,338 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2020-10-12 16:30:23,338 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2020-10-12 16:30:23,338 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-12 16:30:23,338 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 16:30:23,338 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2020-10-12 16:30:23,339 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2020-10-12 16:30:23,339 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2020-10-12 16:30:23,340 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2020-10-12 16:30:23,340 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2020-10-12 16:30:23,341 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-12 16:30:23,341 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-12 16:30:23,341 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-12 16:30:23,341 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-12 16:30:23,342 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-12 16:30:23,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2020-10-12 16:30:23,342 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2020-10-12 16:30:23,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2020-10-12 16:30:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 16:30:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 16:30:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 16:30:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 16:30:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2020-10-12 16:30:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2020-10-12 16:30:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2020-10-12 16:30:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2020-10-12 16:30:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2020-10-12 16:30:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2020-10-12 16:30:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2020-10-12 16:30:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2020-10-12 16:30:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2020-10-12 16:30:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2020-10-12 16:30:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2020-10-12 16:30:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-12 16:30:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-12 16:30:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-12 16:30:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2020-10-12 16:30:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2020-10-12 16:30:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2020-10-12 16:30:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-12 16:30:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-12 16:30:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-12 16:30:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2020-10-12 16:30:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-12 16:30:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 16:30:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-12 16:30:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 16:30:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 16:30:23,744 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:30:23,805 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-12 16:30:23,805 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-12 16:30:23,815 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:30:23,827 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-12 16:30:23,828 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-12 16:30:23,835 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:30:24,046 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2020-10-12 16:30:24,047 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2020-10-12 16:30:24,049 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:30:24,122 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2020-10-12 16:30:24,122 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2020-10-12 16:30:24,133 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:30:24,151 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-12 16:30:24,152 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-12 16:30:24,244 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:30:24,254 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-12 16:30:24,254 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-12 16:30:24,255 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:30:24,264 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-12 16:30:24,265 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-12 16:30:24,265 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:30:24,277 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-12 16:30:24,277 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-12 16:30:24,325 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:30:24,359 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-10-12 16:30:24,360 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-10-12 16:30:24,424 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:30:24,430 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-12 16:30:24,430 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-12 16:30:24,431 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:30:24,439 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-12 16:30:24,439 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-12 16:30:24,440 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 16:30:24,446 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-12 16:30:24,446 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-12 16:30:24,470 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 16:30:24,470 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 16:30:24,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:30:24 BoogieIcfgContainer [2020-10-12 16:30:24,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 16:30:24,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 16:30:24,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 16:30:24,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 16:30:24,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:30:22" (1/3) ... [2020-10-12 16:30:24,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147ab299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:30:24, skipping insertion in model container [2020-10-12 16:30:24,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:30:23" (2/3) ... [2020-10-12 16:30:24,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147ab299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:30:24, skipping insertion in model container [2020-10-12 16:30:24,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:30:24" (3/3) ... [2020-10-12 16:30:24,494 INFO L109 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-1.c [2020-10-12 16:30:24,507 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 16:30:24,520 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 16:30:24,533 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 16:30:24,555 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 16:30:24,555 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 16:30:24,555 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 16:30:24,556 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 16:30:24,556 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 16:30:24,556 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 16:30:24,556 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 16:30:24,556 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 16:30:24,581 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states. [2020-10-12 16:30:24,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 16:30:24,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:30:24,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:30:24,590 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:30:24,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:30:24,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1935172457, now seen corresponding path program 1 times [2020-10-12 16:30:24,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:30:24,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616269810] [2020-10-12 16:30:24,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:30:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:24,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:25,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:25,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:25,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:25,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:25,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:25,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:25,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 16:30:25,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 16:30:25,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 982 [2020-10-12 16:30:25,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:25,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:30:25,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 16:30:25,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 16:30:25,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 16:30:25,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:30:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:25,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:25,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:25,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:25,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:25,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 16:30:25,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:25,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:25,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:25,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:25,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:26,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:30:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:26,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:26,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:26,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:26,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:26,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 16:30:26,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:30:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:30:26,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:26,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:30:26,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616269810] [2020-10-12 16:30:26,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:30:26,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:30:26,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624848297] [2020-10-12 16:30:26,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:30:26,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:30:26,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:30:26,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:30:26,056 INFO L87 Difference]: Start difference. First operand 302 states. Second operand 5 states. [2020-10-12 16:30:27,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:30:27,812 INFO L93 Difference]: Finished difference Result 640 states and 926 transitions. [2020-10-12 16:30:27,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:30:27,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-12 16:30:27,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:30:27,835 INFO L225 Difference]: With dead ends: 640 [2020-10-12 16:30:27,835 INFO L226 Difference]: Without dead ends: 420 [2020-10-12 16:30:27,843 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 [2020-10-12 16:30:27,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2020-10-12 16:30:27,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 366. [2020-10-12 16:30:27,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-10-12 16:30:27,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 483 transitions. [2020-10-12 16:30:27,947 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 483 transitions. Word has length 20 [2020-10-12 16:30:27,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:30:27,948 INFO L479 AbstractCegarLoop]: Abstraction has 366 states and 483 transitions. [2020-10-12 16:30:27,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:30:27,948 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 483 transitions. [2020-10-12 16:30:27,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 16:30:27,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:30:27,949 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] [2020-10-12 16:30:27,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 16:30:27,950 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:30:27,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:30:27,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1949517366, now seen corresponding path program 1 times [2020-10-12 16:30:27,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:30:27,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431389823] [2020-10-12 16:30:27,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:30:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:27,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:28,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:28,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:28,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 16:30:28,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:30:28,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 16:30:28,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:28,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:30:28,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:30:28,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 16:30:28,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:28,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:30:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:28,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:28,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:28,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:28,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:28,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:30:28,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:28,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:28,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:28,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:28,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:30:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:28,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:28,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:28,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:28,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:28,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 16:30:28,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:30:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:30:28,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:30:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:30:28,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431389823] [2020-10-12 16:30:28,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:30:28,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:30:28,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343225426] [2020-10-12 16:30:28,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:30:28,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:30:28,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:30:28,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:30:28,314 INFO L87 Difference]: Start difference. First operand 366 states and 483 transitions. Second operand 5 states. [2020-10-12 16:30:29,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:30:29,636 INFO L93 Difference]: Finished difference Result 422 states and 562 transitions. [2020-10-12 16:30:29,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:30:29,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-12 16:30:29,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:30:29,642 INFO L225 Difference]: With dead ends: 422 [2020-10-12 16:30:29,643 INFO L226 Difference]: Without dead ends: 406 [2020-10-12 16:30:29,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:30:29,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-10-12 16:30:29,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 366. [2020-10-12 16:30:29,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-10-12 16:30:29,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 482 transitions. [2020-10-12 16:30:29,711 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 482 transitions. Word has length 20 [2020-10-12 16:30:29,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:30:29,712 INFO L479 AbstractCegarLoop]: Abstraction has 366 states and 482 transitions. [2020-10-12 16:30:29,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:30:29,713 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 482 transitions. [2020-10-12 16:30:29,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 16:30:29,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:30:29,714 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] [2020-10-12 16:30:29,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 16:30:29,715 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:30:29,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:30:29,716 INFO L82 PathProgramCache]: Analyzing trace with hash -657914795, now seen corresponding path program 1 times [2020-10-12 16:30:29,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:30:29,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691278071] [2020-10-12 16:30:29,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:30:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:29,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:29,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:30,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:30,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 16:30:30,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:30:30,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1214 [2020-10-12 16:30:31,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:30:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 16:30:31,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 16:30:31,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:30:31,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:30:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:31,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:31,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:31,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:31,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:31,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 16:30:31,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:31,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:30:31,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:31,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:30:31,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:30:31,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:30:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:31,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:31,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:31,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:31,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:31,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 16:30:31,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:31,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:30:31,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:31,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:30:31,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:31,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:30:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:31,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:31,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:31,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:31,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:31,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:30:31,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:31,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:30:31,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:31,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:30:31,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:30:31,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691278071] [2020-10-12 16:30:31,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:30:31,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 16:30:31,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036045915] [2020-10-12 16:30:31,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 16:30:31,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:30:31,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 16:30:31,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:30:31,279 INFO L87 Difference]: Start difference. First operand 366 states and 482 transitions. Second operand 7 states. [2020-10-12 16:30:33,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:30:33,762 INFO L93 Difference]: Finished difference Result 1086 states and 1437 transitions. [2020-10-12 16:30:33,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 16:30:33,767 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-12 16:30:33,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:30:33,773 INFO L225 Difference]: With dead ends: 1086 [2020-10-12 16:30:33,774 INFO L226 Difference]: Without dead ends: 741 [2020-10-12 16:30:33,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 16:30:33,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-10-12 16:30:33,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 515. [2020-10-12 16:30:33,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2020-10-12 16:30:33,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 672 transitions. [2020-10-12 16:30:33,832 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 672 transitions. Word has length 28 [2020-10-12 16:30:33,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:30:33,833 INFO L479 AbstractCegarLoop]: Abstraction has 515 states and 672 transitions. [2020-10-12 16:30:33,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 16:30:33,833 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 672 transitions. [2020-10-12 16:30:33,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 16:30:33,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:30:33,834 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] [2020-10-12 16:30:33,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 16:30:33,835 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:30:33,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:30:33,835 INFO L82 PathProgramCache]: Analyzing trace with hash 151431831, now seen corresponding path program 1 times [2020-10-12 16:30:33,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:30:33,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120185958] [2020-10-12 16:30:33,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:30:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:33,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:34,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:34,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 16:30:34,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:34,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-12 16:30:34,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:34,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:30:34,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 16:30:34,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 16:30:34,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:34,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:30:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:34,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:34,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:34,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:34,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:34,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:30:34,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:34,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:34,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:34,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:34,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 16:30:34,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:30:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:34,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:34,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:34,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:34,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:34,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:30:34,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:34,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:34,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:34,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:34,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:34,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:30:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:34,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:34,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:34,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:34,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:34,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:30:34,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:34,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:30:34,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:34,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:30:34,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:34,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:30:34,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120185958] [2020-10-12 16:30:34,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:30:34,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 16:30:34,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483946014] [2020-10-12 16:30:34,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:30:34,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:30:34,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:30:34,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:30:34,228 INFO L87 Difference]: Start difference. First operand 515 states and 672 transitions. Second operand 6 states. [2020-10-12 16:30:36,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:30:36,116 INFO L93 Difference]: Finished difference Result 946 states and 1255 transitions. [2020-10-12 16:30:36,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:30:36,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-12 16:30:36,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:30:36,122 INFO L225 Difference]: With dead ends: 946 [2020-10-12 16:30:36,122 INFO L226 Difference]: Without dead ends: 777 [2020-10-12 16:30:36,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:30:36,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-10-12 16:30:36,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 646. [2020-10-12 16:30:36,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-10-12 16:30:36,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 843 transitions. [2020-10-12 16:30:36,182 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 843 transitions. Word has length 28 [2020-10-12 16:30:36,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:30:36,183 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 843 transitions. [2020-10-12 16:30:36,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:30:36,183 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 843 transitions. [2020-10-12 16:30:36,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 16:30:36,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:30:36,184 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] [2020-10-12 16:30:36,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 16:30:36,185 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:30:36,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:30:36,185 INFO L82 PathProgramCache]: Analyzing trace with hash -523056827, now seen corresponding path program 1 times [2020-10-12 16:30:36,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:30:36,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810927364] [2020-10-12 16:30:36,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:30:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:36,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:36,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:36,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 16:30:36,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:36,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-12 16:30:36,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:36,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:30:36,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 16:30:36,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 16:30:36,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:36,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:30:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:36,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:36,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:36,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:36,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:36,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:30:36,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:36,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:36,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:36,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:36,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:36,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:30:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:36,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:36,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:36,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:36,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:36,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:30:36,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:36,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:36,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:36,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:36,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:30:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:36,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:36,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:36,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:36,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:36,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:30:36,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:36,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:30:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:30:36,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:30:36,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810927364] [2020-10-12 16:30:36,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:30:36,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 16:30:36,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562118475] [2020-10-12 16:30:36,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:30:36,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:30:36,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:30:36,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:30:36,596 INFO L87 Difference]: Start difference. First operand 646 states and 843 transitions. Second operand 6 states. [2020-10-12 16:30:38,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:30:38,206 INFO L93 Difference]: Finished difference Result 1230 states and 1618 transitions. [2020-10-12 16:30:38,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:30:38,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-12 16:30:38,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:30:38,216 INFO L225 Difference]: With dead ends: 1230 [2020-10-12 16:30:38,216 INFO L226 Difference]: Without dead ends: 861 [2020-10-12 16:30:38,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:30:38,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-10-12 16:30:38,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 804. [2020-10-12 16:30:38,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 804 states. [2020-10-12 16:30:38,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1064 transitions. [2020-10-12 16:30:38,324 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1064 transitions. Word has length 30 [2020-10-12 16:30:38,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:30:38,324 INFO L479 AbstractCegarLoop]: Abstraction has 804 states and 1064 transitions. [2020-10-12 16:30:38,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:30:38,325 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1064 transitions. [2020-10-12 16:30:38,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 16:30:38,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:30:38,336 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] [2020-10-12 16:30:38,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 16:30:38,336 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:30:38,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:30:38,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1040933871, now seen corresponding path program 1 times [2020-10-12 16:30:38,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:30:38,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312378870] [2020-10-12 16:30:38,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:30:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:38,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:38,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:38,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 16:30:38,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:38,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-12 16:30:38,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:38,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:30:38,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 16:30:38,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 16:30:38,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:30:38,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:30:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:38,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:38,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:38,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:38,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:38,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:30:38,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:38,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:38,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:38,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 16:30:38,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:30:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:38,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:38,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:38,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:38,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:38,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:30:38,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:38,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:38,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:38,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:38,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:38,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:30:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:38,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:38,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:38,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:38,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:38,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:30:38,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:30:38,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:38,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:30:38,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:30:38,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:30:38,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312378870] [2020-10-12 16:30:38,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:30:38,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 16:30:38,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485706029] [2020-10-12 16:30:38,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:30:38,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:30:38,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:30:38,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:30:38,902 INFO L87 Difference]: Start difference. First operand 804 states and 1064 transitions. Second operand 6 states. [2020-10-12 16:30:40,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:30:40,341 INFO L93 Difference]: Finished difference Result 844 states and 1109 transitions. [2020-10-12 16:30:40,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:30:40,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-12 16:30:40,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:30:40,350 INFO L225 Difference]: With dead ends: 844 [2020-10-12 16:30:40,350 INFO L226 Difference]: Without dead ends: 841 [2020-10-12 16:30:40,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:30:40,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2020-10-12 16:30:40,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 803. [2020-10-12 16:30:40,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-10-12 16:30:40,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1061 transitions. [2020-10-12 16:30:40,427 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1061 transitions. Word has length 34 [2020-10-12 16:30:40,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:30:40,428 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1061 transitions. [2020-10-12 16:30:40,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:30:40,428 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1061 transitions. [2020-10-12 16:30:40,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 16:30:40,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:30:40,431 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] [2020-10-12 16:30:40,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 16:30:40,431 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:30:40,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:30:40,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1618645229, now seen corresponding path program 1 times [2020-10-12 16:30:40,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:30:40,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453667312] [2020-10-12 16:30:40,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:30:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:40,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:40,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:40,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:41,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:41,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 16:30:41,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:30:41,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 866 [2020-10-12 16:30:41,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:41,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:30:41,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 16:30:41,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 16:30:41,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:41,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:30:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:41,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:41,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:41,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:41,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:41,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:30:41,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:41,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:41,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:41,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:41,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:30:41,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:30:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:41,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:41,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:41,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:41,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:41,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 16:30:41,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:41,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:30:41,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:41,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:30:41,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 16:30:41,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:30:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:41,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:41,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:41,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:41,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:41,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 16:30:41,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:41,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:30:41,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:41,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:30:41,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:30:41,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 16:30:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:41,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:41,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:41,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:30:41,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:41,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 16:30:41,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:30:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:30:41,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:30:41,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:30:41,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453667312] [2020-10-12 16:30:41,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:30:41,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 16:30:41,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340728320] [2020-10-12 16:30:41,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 16:30:41,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:30:41,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 16:30:41,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:30:41,656 INFO L87 Difference]: Start difference. First operand 803 states and 1061 transitions. Second operand 10 states. [2020-10-12 16:30:42,010 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-12 16:30:45,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:30:45,347 INFO L93 Difference]: Finished difference Result 1592 states and 2105 transitions. [2020-10-12 16:30:45,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 16:30:45,348 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-10-12 16:30:45,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:30:45,356 INFO L225 Difference]: With dead ends: 1592 [2020-10-12 16:30:45,357 INFO L226 Difference]: Without dead ends: 1071 [2020-10-12 16:30:45,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2020-10-12 16:30:45,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2020-10-12 16:30:45,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 858. [2020-10-12 16:30:45,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2020-10-12 16:30:45,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1124 transitions. [2020-10-12 16:30:45,463 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1124 transitions. Word has length 41 [2020-10-12 16:30:45,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:30:45,463 INFO L479 AbstractCegarLoop]: Abstraction has 858 states and 1124 transitions. [2020-10-12 16:30:45,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 16:30:45,463 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1124 transitions. [2020-10-12 16:30:45,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 16:30:45,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:30:45,466 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] [2020-10-12 16:30:45,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 16:30:45,466 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:30:45,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:30:45,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1801190041, now seen corresponding path program 1 times [2020-10-12 16:30:45,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:30:45,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128630948] [2020-10-12 16:30:45,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:30:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:45,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:45,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:45,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 16:30:45,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:45,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-12 16:30:45,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:45,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:30:45,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-12 16:30:45,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 16:30:45,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:45,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:30:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:45,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:45,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:45,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:45,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:45,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:30:45,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:45,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:45,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:45,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:45,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:45,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:30:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:45,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:45,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:45,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:45,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:45,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:30:45,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:45,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:45,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:30:45,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:30:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:45,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:45,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:45,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:45,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:45,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:30:45,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:45,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:45,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:45,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:45,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:30:45,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:30:45,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128630948] [2020-10-12 16:30:45,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:30:45,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 16:30:45,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273364200] [2020-10-12 16:30:45,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:30:45,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:30:45,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:30:45,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:30:45,797 INFO L87 Difference]: Start difference. First operand 858 states and 1124 transitions. Second operand 6 states. [2020-10-12 16:30:47,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:30:47,037 INFO L93 Difference]: Finished difference Result 901 states and 1177 transitions. [2020-10-12 16:30:47,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:30:47,038 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-12 16:30:47,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:30:47,043 INFO L225 Difference]: With dead ends: 901 [2020-10-12 16:30:47,044 INFO L226 Difference]: Without dead ends: 898 [2020-10-12 16:30:47,044 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 [2020-10-12 16:30:47,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-10-12 16:30:47,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 869. [2020-10-12 16:30:47,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 869 states. [2020-10-12 16:30:47,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1136 transitions. [2020-10-12 16:30:47,135 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1136 transitions. Word has length 40 [2020-10-12 16:30:47,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:30:47,136 INFO L479 AbstractCegarLoop]: Abstraction has 869 states and 1136 transitions. [2020-10-12 16:30:47,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:30:47,136 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1136 transitions. [2020-10-12 16:30:47,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 16:30:47,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:30:47,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:30:47,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 16:30:47,138 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:30:47,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:30:47,138 INFO L82 PathProgramCache]: Analyzing trace with hash -2006089857, now seen corresponding path program 1 times [2020-10-12 16:30:47,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:30:47,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573606111] [2020-10-12 16:30:47,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:30:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:47,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:47,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:47,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 16:30:47,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:47,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 16:30:47,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:47,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:30:47,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-12 16:30:47,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 16:30:47,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:47,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:30:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:47,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:47,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:47,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:47,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:47,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:30:47,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:47,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:47,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:47,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:47,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:47,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:30:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:47,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:47,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:47,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:47,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:47,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:30:47,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:47,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:47,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:47,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:47,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:47,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:30:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:47,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:47,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:47,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:47,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:47,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:30:47,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:47,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:47,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:47,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:47,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:47,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:30:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:47,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:47,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:47,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 16:30:47,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:47,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 16:30:47,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:47,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:30:47,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:47,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 16:30:47,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:47,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 16:30:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:47,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:47,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:47,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:30:47,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:47,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:30:47,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:30:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:47,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 16:30:47,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:30:47,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573606111] [2020-10-12 16:30:47,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:30:47,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 16:30:47,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458334633] [2020-10-12 16:30:47,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:30:47,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:30:47,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:30:47,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:30:47,441 INFO L87 Difference]: Start difference. First operand 869 states and 1136 transitions. Second operand 8 states. [2020-10-12 16:30:48,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:30:48,403 INFO L93 Difference]: Finished difference Result 970 states and 1260 transitions. [2020-10-12 16:30:48,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 16:30:48,403 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-10-12 16:30:48,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:30:48,409 INFO L225 Difference]: With dead ends: 970 [2020-10-12 16:30:48,410 INFO L226 Difference]: Without dead ends: 965 [2020-10-12 16:30:48,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 16:30:48,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2020-10-12 16:30:48,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 914. [2020-10-12 16:30:48,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2020-10-12 16:30:48,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1190 transitions. [2020-10-12 16:30:48,494 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1190 transitions. Word has length 41 [2020-10-12 16:30:48,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:30:48,495 INFO L479 AbstractCegarLoop]: Abstraction has 914 states and 1190 transitions. [2020-10-12 16:30:48,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:30:48,495 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1190 transitions. [2020-10-12 16:30:48,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 16:30:48,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:30:48,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:30:48,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 16:30:48,498 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:30:48,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:30:48,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1606408613, now seen corresponding path program 1 times [2020-10-12 16:30:48,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:30:48,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791178509] [2020-10-12 16:30:48,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:30:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:48,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:48,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:48,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:48,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:48,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 16:30:48,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:30:48,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-12 16:30:48,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:48,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:30:48,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-12 16:30:48,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:30:48,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:48,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:30:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:48,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:48,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:48,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:48,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:48,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:30:48,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:48,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:48,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:48,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:48,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:49,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:30:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:49,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:49,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:49,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:49,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:49,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:30:49,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:49,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:49,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:49,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:30:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:49,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:49,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:49,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:49,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:49,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:30:49,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:49,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:49,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:30:49,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:30:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:49,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:49,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:49,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 16:30:49,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:49,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 16:30:49,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:49,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:30:49,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:49,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 16:30:49,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:49,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-12 16:30:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:49,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:49,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:49,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:30:49,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:49,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:30:49,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:49,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:49,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:49,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:49,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:49,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:30:49,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791178509] [2020-10-12 16:30:49,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:30:49,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 16:30:49,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809457857] [2020-10-12 16:30:49,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 16:30:49,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:30:49,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 16:30:49,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:30:49,137 INFO L87 Difference]: Start difference. First operand 914 states and 1190 transitions. Second operand 10 states. [2020-10-12 16:30:50,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:30:50,305 INFO L93 Difference]: Finished difference Result 977 states and 1267 transitions. [2020-10-12 16:30:50,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 16:30:50,305 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-12 16:30:50,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:30:50,310 INFO L225 Difference]: With dead ends: 977 [2020-10-12 16:30:50,310 INFO L226 Difference]: Without dead ends: 959 [2020-10-12 16:30:50,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:30:50,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-10-12 16:30:50,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 912. [2020-10-12 16:30:50,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2020-10-12 16:30:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1186 transitions. [2020-10-12 16:30:50,396 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1186 transitions. Word has length 42 [2020-10-12 16:30:50,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:30:50,396 INFO L479 AbstractCegarLoop]: Abstraction has 912 states and 1186 transitions. [2020-10-12 16:30:50,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 16:30:50,397 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1186 transitions. [2020-10-12 16:30:50,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-12 16:30:50,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:30:50,398 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] [2020-10-12 16:30:50,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 16:30:50,399 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:30:50,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:30:50,399 INFO L82 PathProgramCache]: Analyzing trace with hash -357671628, now seen corresponding path program 1 times [2020-10-12 16:30:50,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:30:50,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201500353] [2020-10-12 16:30:50,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:30:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:50,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:50,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:50,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:51,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:52,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:52,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 16:30:52,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 16:30:52,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1970 [2020-10-12 16:30:52,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:52,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:30:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-12 16:30:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 16:30:52,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:52,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:30:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:52,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:52,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:52,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:52,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:52,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:30:52,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:52,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:52,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:52,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:52,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:52,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:30:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:52,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:52,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:52,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:52,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:52,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:30:52,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:52,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:52,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:52,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:52,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:52,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:30:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:52,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:52,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:52,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:52,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:52,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:30:52,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:52,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:52,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:52,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:52,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:52,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 16:30:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:52,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:52,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:52,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 16:30:52,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:52,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 16:30:52,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:30:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 16:30:52,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:52,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:30:52,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201500353] [2020-10-12 16:30:52,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:30:52,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 16:30:52,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016538444] [2020-10-12 16:30:52,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 16:30:52,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:30:52,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 16:30:52,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:30:52,606 INFO L87 Difference]: Start difference. First operand 912 states and 1186 transitions. Second operand 10 states. [2020-10-12 16:30:54,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:30:54,274 INFO L93 Difference]: Finished difference Result 1712 states and 2327 transitions. [2020-10-12 16:30:54,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 16:30:54,275 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-10-12 16:30:54,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:30:54,282 INFO L225 Difference]: With dead ends: 1712 [2020-10-12 16:30:54,282 INFO L226 Difference]: Without dead ends: 1131 [2020-10-12 16:30:54,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-12 16:30:54,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2020-10-12 16:30:54,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 949. [2020-10-12 16:30:54,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2020-10-12 16:30:54,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1254 transitions. [2020-10-12 16:30:54,374 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1254 transitions. Word has length 49 [2020-10-12 16:30:54,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:30:54,374 INFO L479 AbstractCegarLoop]: Abstraction has 949 states and 1254 transitions. [2020-10-12 16:30:54,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 16:30:54,374 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1254 transitions. [2020-10-12 16:30:54,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 16:30:54,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:30:54,376 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] [2020-10-12 16:30:54,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 16:30:54,377 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:30:54,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:30:54,377 INFO L82 PathProgramCache]: Analyzing trace with hash 2023783060, now seen corresponding path program 1 times [2020-10-12 16:30:54,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:30:54,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110139152] [2020-10-12 16:30:54,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:30:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:54,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:54,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:54,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:54,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:54,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 16:30:54,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:30:54,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-12 16:30:54,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:54,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:30:54,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 16:30:54,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 16:30:54,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:55,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:30:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:55,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:55,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:55,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:55,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:55,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:30:55,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:55,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:55,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:55,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:55,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:55,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:30:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:55,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:55,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:55,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:55,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:55,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:30:55,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:55,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:30:55,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:55,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:30:55,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:55,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:30:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:55,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:55,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:55,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:55,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:55,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:30:55,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:55,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:30:55,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:55,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:30:55,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:55,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 16:30:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:55,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:55,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:55,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:30:55,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:55,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 16:30:55,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:55,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:30:55,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:55,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:30:55,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 16:30:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:30:55,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110139152] [2020-10-12 16:30:55,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:30:55,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 16:30:55,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218833908] [2020-10-12 16:30:55,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 16:30:55,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:30:55,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 16:30:55,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-12 16:30:55,215 INFO L87 Difference]: Start difference. First operand 949 states and 1254 transitions. Second operand 9 states. [2020-10-12 16:30:56,268 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-12 16:30:58,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:30:58,184 INFO L93 Difference]: Finished difference Result 2145 states and 2928 transitions. [2020-10-12 16:30:58,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 16:30:58,185 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-10-12 16:30:58,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:30:58,193 INFO L225 Difference]: With dead ends: 2145 [2020-10-12 16:30:58,194 INFO L226 Difference]: Without dead ends: 1613 [2020-10-12 16:30:58,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2020-10-12 16:30:58,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2020-10-12 16:30:58,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1142. [2020-10-12 16:30:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1142 states. [2020-10-12 16:30:58,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1515 transitions. [2020-10-12 16:30:58,311 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1515 transitions. Word has length 50 [2020-10-12 16:30:58,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:30:58,311 INFO L479 AbstractCegarLoop]: Abstraction has 1142 states and 1515 transitions. [2020-10-12 16:30:58,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 16:30:58,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1515 transitions. [2020-10-12 16:30:58,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 16:30:58,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:30:58,314 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] [2020-10-12 16:30:58,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 16:30:58,314 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:30:58,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:30:58,314 INFO L82 PathProgramCache]: Analyzing trace with hash 422856019, now seen corresponding path program 1 times [2020-10-12 16:30:58,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:30:58,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550506870] [2020-10-12 16:30:58,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:30:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:58,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:58,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:58,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 16:30:58,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:58,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-12 16:30:58,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:58,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:30:58,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-12 16:30:58,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 16:30:58,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:30:58,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:30:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:58,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:58,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:58,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:58,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:58,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:30:58,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:58,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:58,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:58,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:58,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:58,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:30:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:58,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:58,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:58,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:58,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:58,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:30:58,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:58,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:58,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:58,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:58,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:58,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:30:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:58,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:58,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:58,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:30:58,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:58,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:30:58,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:58,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:30:58,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:30:58,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:30:58,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:58,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 16:30:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:30:58,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:30:58,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:30:58,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 16:30:58,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:30:58,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:30:58,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:30:58,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:30:58,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 16:30:58,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 16:30:58,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:30:58,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:30:58,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550506870] [2020-10-12 16:30:58,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:30:58,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 16:30:58,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851601790] [2020-10-12 16:30:58,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:30:58,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:30:58,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:30:58,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:30:58,665 INFO L87 Difference]: Start difference. First operand 1142 states and 1515 transitions. Second operand 8 states. [2020-10-12 16:31:00,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:00,175 INFO L93 Difference]: Finished difference Result 1274 states and 1653 transitions. [2020-10-12 16:31:00,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 16:31:00,175 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-10-12 16:31:00,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:00,180 INFO L225 Difference]: With dead ends: 1274 [2020-10-12 16:31:00,180 INFO L226 Difference]: Without dead ends: 862 [2020-10-12 16:31:00,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:31:00,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2020-10-12 16:31:00,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 787. [2020-10-12 16:31:00,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 787 states. [2020-10-12 16:31:00,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1005 transitions. [2020-10-12 16:31:00,284 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1005 transitions. Word has length 50 [2020-10-12 16:31:00,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:00,285 INFO L479 AbstractCegarLoop]: Abstraction has 787 states and 1005 transitions. [2020-10-12 16:31:00,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:31:00,285 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1005 transitions. [2020-10-12 16:31:00,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 16:31:00,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:00,288 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] [2020-10-12 16:31:00,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 16:31:00,288 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:00,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:00,289 INFO L82 PathProgramCache]: Analyzing trace with hash -396227580, now seen corresponding path program 1 times [2020-10-12 16:31:00,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:00,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511927511] [2020-10-12 16:31:00,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:00,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:00,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:00,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 16:31:00,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:00,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-12 16:31:00,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:00,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-12 16:31:00,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 16:31:00,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:00,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:00,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:00,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:00,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:00,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:00,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 16:31:00,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:00,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:00,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:00,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:00,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:00,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:00,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:00,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:00,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:00,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:00,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:31:00,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:00,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:00,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:00,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:00,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:00,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:00,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:00,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:00,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:00,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:00,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:00,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:00,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:00,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:00,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:00,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:00,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 16:31:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:00,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:00,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:00,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:31:00,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:00,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:31:00,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:00,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:00,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:00,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:00,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:00,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:31:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:00,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:00,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:00,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:00,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:00,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:00,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:00,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:00,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:00,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 16:31:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:00,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:00,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:00,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:00,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:00,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:00,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:00,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:00,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:00,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:31:00,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:00,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:00,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511927511] [2020-10-12 16:31:00,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:00,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 16:31:00,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390577521] [2020-10-12 16:31:00,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:31:00,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:00,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:31:00,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:31:00,852 INFO L87 Difference]: Start difference. First operand 787 states and 1005 transitions. Second operand 8 states. [2020-10-12 16:31:01,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:01,757 INFO L93 Difference]: Finished difference Result 1148 states and 1473 transitions. [2020-10-12 16:31:01,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 16:31:01,758 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-10-12 16:31:01,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:01,762 INFO L225 Difference]: With dead ends: 1148 [2020-10-12 16:31:01,762 INFO L226 Difference]: Without dead ends: 851 [2020-10-12 16:31:01,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-12 16:31:01,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2020-10-12 16:31:01,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 803. [2020-10-12 16:31:01,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-10-12 16:31:01,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1025 transitions. [2020-10-12 16:31:01,842 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1025 transitions. Word has length 55 [2020-10-12 16:31:01,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:01,843 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1025 transitions. [2020-10-12 16:31:01,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:31:01,843 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1025 transitions. [2020-10-12 16:31:01,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 16:31:01,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:01,845 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] [2020-10-12 16:31:01,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 16:31:01,846 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:01,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:01,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1014512749, now seen corresponding path program 1 times [2020-10-12 16:31:01,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:01,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891884649] [2020-10-12 16:31:01,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:01,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:01,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:02,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:02,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:02,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:02,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:02,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 16:31:02,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 16:31:02,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1090 [2020-10-12 16:31:02,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:02,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:31:02,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 16:31:02,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 16:31:02,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:03,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:03,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:03,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:03,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:03,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:03,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:31:03,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:03,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:03,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:03,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:03,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:03,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:03,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:03,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:03,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:03,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:03,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:03,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:03,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:03,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:03,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:03,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:03,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:03,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:03,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:03,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:03,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:03,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:03,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:03,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:03,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:03,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:03,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:03,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:03,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:03,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 16:31:03,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:03,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 16:31:03,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:03,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:31:03,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:03,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 16:31:03,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:03,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 16:31:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:03,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:03,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:03,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 16:31:03,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:03,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 16:31:03,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:03,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:03,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:03,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 16:31:03,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:03,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:03,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891884649] [2020-10-12 16:31:03,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:03,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 16:31:03,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835761119] [2020-10-12 16:31:03,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 16:31:03,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:03,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 16:31:03,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:31:03,340 INFO L87 Difference]: Start difference. First operand 803 states and 1025 transitions. Second operand 13 states. [2020-10-12 16:31:04,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:04,697 INFO L93 Difference]: Finished difference Result 911 states and 1155 transitions. [2020-10-12 16:31:04,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 16:31:04,698 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-12 16:31:04,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:04,702 INFO L225 Difference]: With dead ends: 911 [2020-10-12 16:31:04,702 INFO L226 Difference]: Without dead ends: 905 [2020-10-12 16:31:04,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-12 16:31:04,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2020-10-12 16:31:04,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 833. [2020-10-12 16:31:04,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2020-10-12 16:31:04,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1068 transitions. [2020-10-12 16:31:04,789 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1068 transitions. Word has length 53 [2020-10-12 16:31:04,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:04,789 INFO L479 AbstractCegarLoop]: Abstraction has 833 states and 1068 transitions. [2020-10-12 16:31:04,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 16:31:04,789 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1068 transitions. [2020-10-12 16:31:04,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 16:31:04,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:04,791 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] [2020-10-12 16:31:04,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 16:31:04,792 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:04,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:04,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1014789579, now seen corresponding path program 1 times [2020-10-12 16:31:04,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:04,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834869102] [2020-10-12 16:31:04,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:04,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:04,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:04,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:05,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:05,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 16:31:05,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:31:05,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 727 [2020-10-12 16:31:05,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:05,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:31:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 16:31:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 16:31:05,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:05,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:05,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:05,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:05,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:05,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:05,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:05,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:05,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:05,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:05,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:05,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:05,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:05,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:05,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:05,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:05,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:05,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:05,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:05,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:05,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:05,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:05,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:05,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:05,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:05,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:05,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:05,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:05,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:05,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:05,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:05,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:05,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 16:31:05,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:05,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 16:31:05,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:05,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:31:05,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:05,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 16:31:05,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:05,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 16:31:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:05,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:05,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:05,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 16:31:05,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:05,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 16:31:05,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:05,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:05,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:05,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 16:31:05,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:05,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:05,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834869102] [2020-10-12 16:31:05,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:05,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 16:31:05,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208134505] [2020-10-12 16:31:05,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 16:31:05,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:05,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 16:31:05,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:31:05,831 INFO L87 Difference]: Start difference. First operand 833 states and 1068 transitions. Second operand 13 states. [2020-10-12 16:31:07,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:07,270 INFO L93 Difference]: Finished difference Result 904 states and 1151 transitions. [2020-10-12 16:31:07,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 16:31:07,276 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-12 16:31:07,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:07,281 INFO L225 Difference]: With dead ends: 904 [2020-10-12 16:31:07,282 INFO L226 Difference]: Without dead ends: 888 [2020-10-12 16:31:07,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-12 16:31:07,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2020-10-12 16:31:07,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 839. [2020-10-12 16:31:07,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 839 states. [2020-10-12 16:31:07,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1073 transitions. [2020-10-12 16:31:07,368 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1073 transitions. Word has length 53 [2020-10-12 16:31:07,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:07,369 INFO L479 AbstractCegarLoop]: Abstraction has 839 states and 1073 transitions. [2020-10-12 16:31:07,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 16:31:07,369 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1073 transitions. [2020-10-12 16:31:07,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 16:31:07,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:07,371 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] [2020-10-12 16:31:07,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 16:31:07,372 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:07,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:07,372 INFO L82 PathProgramCache]: Analyzing trace with hash 29740109, now seen corresponding path program 1 times [2020-10-12 16:31:07,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:07,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627771851] [2020-10-12 16:31:07,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:07,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:07,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:07,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 16:31:07,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:07,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-12 16:31:07,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:07,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:07,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-12 16:31:07,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:31:07,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:07,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:07,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:07,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:07,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:07,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:07,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:31:07,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:07,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:07,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:07,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:07,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:07,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:07,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:07,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:07,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:07,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:07,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:31:07,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:07,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:07,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:07,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:07,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:07,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:07,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:07,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:07,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:07,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:07,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:07,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:07,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:07,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:07,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:07,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:07,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 16:31:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:07,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:07,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:07,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 16:31:07,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:07,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 16:31:07,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:07,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:07,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 16:31:07,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:31:07,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:07,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 16:31:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:07,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:07,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:07,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:31:07,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:07,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 16:31:07,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:07,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:31:07,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:07,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 16:31:07,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:07,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:31:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:07,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:07,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:07,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:07,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:07,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:07,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:07,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:07,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:07,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627771851] [2020-10-12 16:31:07,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:07,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 16:31:07,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824901604] [2020-10-12 16:31:07,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 16:31:07,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:07,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 16:31:07,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:31:07,924 INFO L87 Difference]: Start difference. First operand 839 states and 1073 transitions. Second operand 10 states. [2020-10-12 16:31:09,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:09,147 INFO L93 Difference]: Finished difference Result 1174 states and 1506 transitions. [2020-10-12 16:31:09,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 16:31:09,147 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2020-10-12 16:31:09,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:09,151 INFO L225 Difference]: With dead ends: 1174 [2020-10-12 16:31:09,152 INFO L226 Difference]: Without dead ends: 861 [2020-10-12 16:31:09,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:31:09,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-10-12 16:31:09,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 815. [2020-10-12 16:31:09,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-10-12 16:31:09,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1037 transitions. [2020-10-12 16:31:09,227 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1037 transitions. Word has length 61 [2020-10-12 16:31:09,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:09,227 INFO L479 AbstractCegarLoop]: Abstraction has 815 states and 1037 transitions. [2020-10-12 16:31:09,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 16:31:09,228 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1037 transitions. [2020-10-12 16:31:09,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 16:31:09,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:09,230 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] [2020-10-12 16:31:09,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 16:31:09,230 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:09,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:09,231 INFO L82 PathProgramCache]: Analyzing trace with hash -681498393, now seen corresponding path program 1 times [2020-10-12 16:31:09,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:09,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581176758] [2020-10-12 16:31:09,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:09,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:09,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:09,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:09,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:09,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 16:31:09,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:31:09,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-12 16:31:09,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:09,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:31:09,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 16:31:09,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 16:31:09,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:09,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:09,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:09,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:09,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:09,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:09,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:31:09,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:09,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:09,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:09,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:09,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:09,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:09,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:09,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:09,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:09,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:09,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:09,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:09,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:09,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:09,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:09,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:09,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:09,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:09,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:09,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:09,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:09,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:09,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:09,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:09,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:10,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:10,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 16:31:10,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:10,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 16:31:10,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:10,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:10,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:10,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 16:31:10,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:10,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 16:31:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:10,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:10,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:10,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:31:10,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:10,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:10,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:10,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:10,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:10,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:10,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:10,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 16:31:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:10,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:10,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:10,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:31:10,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:10,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:10,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:10,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:10,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:31:10,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:10,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:10,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581176758] [2020-10-12 16:31:10,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:10,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 16:31:10,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241831351] [2020-10-12 16:31:10,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 16:31:10,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:10,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 16:31:10,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-12 16:31:10,089 INFO L87 Difference]: Start difference. First operand 815 states and 1037 transitions. Second operand 12 states. [2020-10-12 16:31:11,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:11,489 INFO L93 Difference]: Finished difference Result 877 states and 1109 transitions. [2020-10-12 16:31:11,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 16:31:11,490 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-10-12 16:31:11,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:11,493 INFO L225 Difference]: With dead ends: 877 [2020-10-12 16:31:11,493 INFO L226 Difference]: Without dead ends: 846 [2020-10-12 16:31:11,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-12 16:31:11,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2020-10-12 16:31:11,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 804. [2020-10-12 16:31:11,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 804 states. [2020-10-12 16:31:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1023 transitions. [2020-10-12 16:31:11,570 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1023 transitions. Word has length 55 [2020-10-12 16:31:11,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:11,571 INFO L479 AbstractCegarLoop]: Abstraction has 804 states and 1023 transitions. [2020-10-12 16:31:11,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 16:31:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1023 transitions. [2020-10-12 16:31:11,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 16:31:11,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:11,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:31:11,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 16:31:11,575 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:11,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:11,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1073013810, now seen corresponding path program 1 times [2020-10-12 16:31:11,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:11,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836366872] [2020-10-12 16:31:11,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:11,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:11,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:11,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 16:31:11,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:11,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-12 16:31:11,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:11,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:11,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-12 16:31:11,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 16:31:11,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:11,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:11,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:11,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:11,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:11,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:11,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:11,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:11,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:11,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:11,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:11,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:11,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:11,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:11,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:11,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:11,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:11,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:31:11,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:11,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:11,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:11,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:11,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:11,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:11,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:11,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:11,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:11,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:11,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:11,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:11,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:11,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:11,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:11,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:11,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:11,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 16:31:11,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:11,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 16:31:11,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:11,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:11,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:11,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 16:31:11,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:11,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 16:31:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:11,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:11,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:11,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:31:11,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:11,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:31:11,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:11,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:11,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:11,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 16:31:11,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:11,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836366872] [2020-10-12 16:31:11,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:11,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 16:31:11,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156168912] [2020-10-12 16:31:11,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:31:11,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:11,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:31:11,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:31:11,930 INFO L87 Difference]: Start difference. First operand 804 states and 1023 transitions. Second operand 8 states. [2020-10-12 16:31:13,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:13,144 INFO L93 Difference]: Finished difference Result 969 states and 1225 transitions. [2020-10-12 16:31:13,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 16:31:13,145 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-10-12 16:31:13,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:13,149 INFO L225 Difference]: With dead ends: 969 [2020-10-12 16:31:13,149 INFO L226 Difference]: Without dead ends: 938 [2020-10-12 16:31:13,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 16:31:13,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2020-10-12 16:31:13,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 883. [2020-10-12 16:31:13,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-10-12 16:31:13,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1119 transitions. [2020-10-12 16:31:13,231 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1119 transitions. Word has length 54 [2020-10-12 16:31:13,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:13,232 INFO L479 AbstractCegarLoop]: Abstraction has 883 states and 1119 transitions. [2020-10-12 16:31:13,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:31:13,232 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1119 transitions. [2020-10-12 16:31:13,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 16:31:13,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:13,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:31:13,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 16:31:13,234 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:13,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:13,235 INFO L82 PathProgramCache]: Analyzing trace with hash 929734452, now seen corresponding path program 1 times [2020-10-12 16:31:13,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:13,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829293138] [2020-10-12 16:31:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:13,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:13,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:13,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 16:31:13,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:13,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-12 16:31:13,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:31:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 16:31:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 16:31:13,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:13,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:13,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:13,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:13,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:13,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:13,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:13,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:13,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:13,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:13,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:13,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:13,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:13,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:13,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:13,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:31:13,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:13,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:13,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:31:13,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:13,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:13,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:13,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:13,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:13,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:13,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 16:31:13,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:13,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:13,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:13,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:31:13,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:13,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:13,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:13,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:13,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 16:31:13,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:13,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 16:31:13,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:13,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:31:13,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 16:31:13,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 16:31:13,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:13,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 16:31:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:13,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:13,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:13,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:31:13,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:13,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 16:31:13,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:31:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 16:31:13,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 16:31:13,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:13,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:13,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829293138] [2020-10-12 16:31:13,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:13,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 16:31:13,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139571873] [2020-10-12 16:31:13,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 16:31:13,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:13,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 16:31:13,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:31:13,874 INFO L87 Difference]: Start difference. First operand 883 states and 1119 transitions. Second operand 13 states. [2020-10-12 16:31:15,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:15,573 INFO L93 Difference]: Finished difference Result 937 states and 1182 transitions. [2020-10-12 16:31:15,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 16:31:15,574 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-12 16:31:15,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:15,578 INFO L225 Difference]: With dead ends: 937 [2020-10-12 16:31:15,578 INFO L226 Difference]: Without dead ends: 802 [2020-10-12 16:31:15,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2020-10-12 16:31:15,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2020-10-12 16:31:15,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 755. [2020-10-12 16:31:15,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 755 states. [2020-10-12 16:31:15,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 948 transitions. [2020-10-12 16:31:15,649 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 948 transitions. Word has length 54 [2020-10-12 16:31:15,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:15,650 INFO L479 AbstractCegarLoop]: Abstraction has 755 states and 948 transitions. [2020-10-12 16:31:15,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 16:31:15,650 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 948 transitions. [2020-10-12 16:31:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 16:31:15,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:15,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:31:15,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 16:31:15,652 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:15,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:15,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1566538877, now seen corresponding path program 1 times [2020-10-12 16:31:15,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:15,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068467012] [2020-10-12 16:31:15,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:15,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:15,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:15,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:15,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:15,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:15,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 16:31:15,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 16:31:15,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-12 16:31:15,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:15,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:31:15,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 16:31:15,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 16:31:15,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:16,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:16,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:16,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:16,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:16,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:16,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:16,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:16,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:16,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:16,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:16,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:16,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:16,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:16,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:16,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:16,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:16,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:31:16,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:16,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:31:16,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:16,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:16,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:16,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:16,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:16,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:16,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:16,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:16,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:16,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:16,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:31:16,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:16,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:16,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:16,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:16,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 16:31:16,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:16,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 16:31:16,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:16,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:31:16,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 16:31:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 16:31:16,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:16,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 16:31:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:16,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:16,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:16,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:31:16,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:16,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 16:31:16,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:16,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:31:16,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 16:31:16,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 16:31:16,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:16,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:16,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068467012] [2020-10-12 16:31:16,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:16,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 16:31:16,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803466203] [2020-10-12 16:31:16,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 16:31:16,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:16,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 16:31:16,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-12 16:31:16,264 INFO L87 Difference]: Start difference. First operand 755 states and 948 transitions. Second operand 12 states. [2020-10-12 16:31:18,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:18,491 INFO L93 Difference]: Finished difference Result 926 states and 1167 transitions. [2020-10-12 16:31:18,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 16:31:18,491 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-12 16:31:18,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:18,496 INFO L225 Difference]: With dead ends: 926 [2020-10-12 16:31:18,496 INFO L226 Difference]: Without dead ends: 831 [2020-10-12 16:31:18,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-10-12 16:31:18,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-10-12 16:31:18,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 673. [2020-10-12 16:31:18,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-10-12 16:31:18,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 838 transitions. [2020-10-12 16:31:18,562 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 838 transitions. Word has length 54 [2020-10-12 16:31:18,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:18,562 INFO L479 AbstractCegarLoop]: Abstraction has 673 states and 838 transitions. [2020-10-12 16:31:18,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 16:31:18,563 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 838 transitions. [2020-10-12 16:31:18,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 16:31:18,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:18,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:31:18,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 16:31:18,565 INFO L427 AbstractCegarLoop]: === Iteration 22 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:18,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:18,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1066747129, now seen corresponding path program 1 times [2020-10-12 16:31:18,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:18,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975101163] [2020-10-12 16:31:18,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:18,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:18,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:18,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:19,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:19,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:19,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:19,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:19,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 16:31:19,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 16:31:19,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 929 [2020-10-12 16:31:19,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:19,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:19,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-12 16:31:19,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:31:19,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:19,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:19,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:19,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:19,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:19,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:19,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:19,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:19,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:19,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:19,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:19,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:19,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:19,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:19,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:19,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:19,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:19,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:19,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:19,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:19,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:19,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:19,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:19,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:19,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:19,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:19,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:19,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:19,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:19,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:19,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:19,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:19,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:19,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:19,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:19,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:19,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:19,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 16:31:19,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:19,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 16:31:19,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:19,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:19,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 16:31:19,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:31:19,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:19,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 16:31:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:19,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:19,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:19,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 16:31:19,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:19,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 16:31:19,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:19,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:31:19,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:19,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 16:31:19,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:19,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:19,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:19,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:19,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:31:19,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:19,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:19,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:19,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:19,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 16:31:19,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:19,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:19,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:19,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975101163] [2020-10-12 16:31:19,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:19,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 16:31:19,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576080194] [2020-10-12 16:31:19,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 16:31:19,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:19,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 16:31:19,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-12 16:31:19,883 INFO L87 Difference]: Start difference. First operand 673 states and 838 transitions. Second operand 11 states. [2020-10-12 16:31:21,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:21,602 INFO L93 Difference]: Finished difference Result 729 states and 904 transitions. [2020-10-12 16:31:21,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 16:31:21,609 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-12 16:31:21,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:21,611 INFO L225 Difference]: With dead ends: 729 [2020-10-12 16:31:21,612 INFO L226 Difference]: Without dead ends: 697 [2020-10-12 16:31:21,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-12 16:31:21,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-12 16:31:21,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 645. [2020-10-12 16:31:21,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2020-10-12 16:31:21,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 803 transitions. [2020-10-12 16:31:21,719 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 803 transitions. Word has length 57 [2020-10-12 16:31:21,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:21,720 INFO L479 AbstractCegarLoop]: Abstraction has 645 states and 803 transitions. [2020-10-12 16:31:21,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 16:31:21,720 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 803 transitions. [2020-10-12 16:31:21,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 16:31:21,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:21,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:31:21,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 16:31:21,723 INFO L427 AbstractCegarLoop]: === Iteration 23 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:21,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:21,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1572656152, now seen corresponding path program 1 times [2020-10-12 16:31:21,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:21,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169528463] [2020-10-12 16:31:21,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:21,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:21,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:21,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:21,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 16:31:21,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:31:21,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-12 16:31:21,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:21,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:31:21,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 16:31:21,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 16:31:21,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:21,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:21,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:21,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:21,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:21,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:21,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:31:21,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:21,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:21,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:21,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:21,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:21,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:22,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:22,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:22,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:22,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:22,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:31:22,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:22,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:22,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:22,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:31:22,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:22,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:22,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:22,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:22,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:22,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:22,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:22,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:31:22,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:22,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:22,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:22,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:22,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 16:31:22,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:22,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 16:31:22,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:22,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:31:22,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:22,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 16:31:22,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:22,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 16:31:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:22,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:22,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:22,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 16:31:22,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:22,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 16:31:22,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:22,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:22,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:22,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 16:31:22,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:22,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:22,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169528463] [2020-10-12 16:31:22,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:22,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 16:31:22,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007123955] [2020-10-12 16:31:22,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 16:31:22,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:22,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 16:31:22,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:31:22,187 INFO L87 Difference]: Start difference. First operand 645 states and 803 transitions. Second operand 10 states. [2020-10-12 16:31:23,738 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-12 16:31:24,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:24,266 INFO L93 Difference]: Finished difference Result 700 states and 867 transitions. [2020-10-12 16:31:24,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 16:31:24,267 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-12 16:31:24,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:24,271 INFO L225 Difference]: With dead ends: 700 [2020-10-12 16:31:24,272 INFO L226 Difference]: Without dead ends: 682 [2020-10-12 16:31:24,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-12 16:31:24,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-10-12 16:31:24,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 627. [2020-10-12 16:31:24,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2020-10-12 16:31:24,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 777 transitions. [2020-10-12 16:31:24,382 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 777 transitions. Word has length 56 [2020-10-12 16:31:24,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:24,383 INFO L479 AbstractCegarLoop]: Abstraction has 627 states and 777 transitions. [2020-10-12 16:31:24,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 16:31:24,383 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 777 transitions. [2020-10-12 16:31:24,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 16:31:24,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:24,387 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] [2020-10-12 16:31:24,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 16:31:24,387 INFO L427 AbstractCegarLoop]: === Iteration 24 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:24,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:24,388 INFO L82 PathProgramCache]: Analyzing trace with hash -119702348, now seen corresponding path program 1 times [2020-10-12 16:31:24,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:24,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234405754] [2020-10-12 16:31:24,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:24,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:24,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:24,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 16:31:24,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:24,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-12 16:31:24,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:31:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 16:31:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 16:31:24,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:24,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:24,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:24,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:24,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:24,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:24,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:31:24,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:24,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:24,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:24,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:24,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:24,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:24,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:24,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:24,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:24,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:24,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:31:24,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:24,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:24,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:31:24,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:24,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:24,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:24,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:24,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:24,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:24,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:31:24,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:24,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:24,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:24,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:31:24,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:24,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 16:31:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:24,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:24,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:24,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 16:31:24,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:24,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 16:31:24,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:24,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:31:24,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 16:31:24,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 16:31:24,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:24,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 16:31:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:24,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:24,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:24,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:31:24,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:24,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:24,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:24,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:24,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:24,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:24,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:24,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:31:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:24,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:24,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:24,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:24,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:24,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:24,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:24,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:24,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:24,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:24,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:24,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:31:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:24,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:24,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:24,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:24,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:24,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:24,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:31:24,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:24,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:24,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234405754] [2020-10-12 16:31:24,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:24,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 16:31:24,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392164544] [2020-10-12 16:31:24,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 16:31:24,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:24,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 16:31:24,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-12 16:31:24,952 INFO L87 Difference]: Start difference. First operand 627 states and 777 transitions. Second operand 11 states. [2020-10-12 16:31:25,256 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-12 16:31:27,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:27,086 INFO L93 Difference]: Finished difference Result 936 states and 1163 transitions. [2020-10-12 16:31:27,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 16:31:27,087 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-10-12 16:31:27,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:27,092 INFO L225 Difference]: With dead ends: 936 [2020-10-12 16:31:27,092 INFO L226 Difference]: Without dead ends: 647 [2020-10-12 16:31:27,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-10-12 16:31:27,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2020-10-12 16:31:27,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 594. [2020-10-12 16:31:27,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-10-12 16:31:27,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 723 transitions. [2020-10-12 16:31:27,205 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 723 transitions. Word has length 65 [2020-10-12 16:31:27,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:27,206 INFO L479 AbstractCegarLoop]: Abstraction has 594 states and 723 transitions. [2020-10-12 16:31:27,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 16:31:27,206 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 723 transitions. [2020-10-12 16:31:27,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 16:31:27,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:27,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:31:27,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 16:31:27,209 INFO L427 AbstractCegarLoop]: === Iteration 25 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:27,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:27,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1616491651, now seen corresponding path program 1 times [2020-10-12 16:31:27,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:27,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289299544] [2020-10-12 16:31:27,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:27,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:27,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:27,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:27,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 16:31:27,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:31:27,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-12 16:31:27,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:27,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:31:27,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-12 16:31:27,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:31:27,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:27,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:27,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:27,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:27,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:27,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:27,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:31:27,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:27,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:27,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:27,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:27,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:27,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:27,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:27,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:27,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:27,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:27,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:27,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:27,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:27,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:27,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:27,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:27,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:27,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:27,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:27,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:27,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:27,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:27,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:27,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:27,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:27,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:27,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:27,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 16:31:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:27,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:27,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:27,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:27,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 16:31:27,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:31:27,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 16:31:27,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:27,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:27,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:27,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 16:31:27,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:27,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 16:31:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:27,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:27,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:27,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:31:27,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:27,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:27,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:27,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:27,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:27,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:27,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:27,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:31:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:27,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:27,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:27,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:27,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:27,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:27,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:27,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:27,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:27,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:27,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:27,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:31:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:27,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:27,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:27,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:27,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:27,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:27,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:27,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:27,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:27,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:27,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:27,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:27,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289299544] [2020-10-12 16:31:27,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:27,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 16:31:27,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771856274] [2020-10-12 16:31:27,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 16:31:27,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:27,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 16:31:27,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-12 16:31:27,798 INFO L87 Difference]: Start difference. First operand 594 states and 723 transitions. Second operand 12 states. [2020-10-12 16:31:29,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:29,248 INFO L93 Difference]: Finished difference Result 901 states and 1099 transitions. [2020-10-12 16:31:29,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 16:31:29,248 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-12 16:31:29,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:29,251 INFO L225 Difference]: With dead ends: 901 [2020-10-12 16:31:29,252 INFO L226 Difference]: Without dead ends: 672 [2020-10-12 16:31:29,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-12 16:31:29,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2020-10-12 16:31:29,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 588. [2020-10-12 16:31:29,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2020-10-12 16:31:29,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 710 transitions. [2020-10-12 16:31:29,318 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 710 transitions. Word has length 68 [2020-10-12 16:31:29,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:29,319 INFO L479 AbstractCegarLoop]: Abstraction has 588 states and 710 transitions. [2020-10-12 16:31:29,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 16:31:29,319 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 710 transitions. [2020-10-12 16:31:29,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 16:31:29,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:29,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:31:29,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 16:31:29,321 INFO L427 AbstractCegarLoop]: === Iteration 26 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:29,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:29,321 INFO L82 PathProgramCache]: Analyzing trace with hash -718007398, now seen corresponding path program 1 times [2020-10-12 16:31:29,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:29,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458952037] [2020-10-12 16:31:29,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:29,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:29,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:29,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 16:31:29,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:29,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-12 16:31:29,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:29,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:31:29,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-12 16:31:29,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 16:31:29,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:29,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:29,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:29,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:29,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:29,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:29,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:31:29,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:29,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:29,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:29,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:29,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:29,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:29,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:29,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:29,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:29,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:29,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:29,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:29,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:29,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:29,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:29,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:29,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:29,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:29,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:29,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:29,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:29,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:29,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:29,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:29,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:29,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:29,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 16:31:29,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:29,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 16:31:29,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:29,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:31:29,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:29,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 16:31:29,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:29,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:29,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:29,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:29,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:31:29,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:29,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 16:31:29,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:29,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:29,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:29,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:31:29,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:29,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458952037] [2020-10-12 16:31:29,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:29,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 16:31:29,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131159817] [2020-10-12 16:31:29,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 16:31:29,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:29,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 16:31:29,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-12 16:31:29,931 INFO L87 Difference]: Start difference. First operand 588 states and 710 transitions. Second operand 14 states. [2020-10-12 16:31:31,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:31,950 INFO L93 Difference]: Finished difference Result 652 states and 783 transitions. [2020-10-12 16:31:31,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 16:31:31,951 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2020-10-12 16:31:31,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:31,954 INFO L225 Difference]: With dead ends: 652 [2020-10-12 16:31:31,954 INFO L226 Difference]: Without dead ends: 631 [2020-10-12 16:31:31,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-12 16:31:31,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-10-12 16:31:32,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 584. [2020-10-12 16:31:32,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-10-12 16:31:32,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 704 transitions. [2020-10-12 16:31:32,024 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 704 transitions. Word has length 60 [2020-10-12 16:31:32,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:32,024 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 704 transitions. [2020-10-12 16:31:32,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 16:31:32,024 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 704 transitions. [2020-10-12 16:31:32,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 16:31:32,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:32,026 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] [2020-10-12 16:31:32,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 16:31:32,026 INFO L427 AbstractCegarLoop]: === Iteration 27 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:32,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:32,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1378187680, now seen corresponding path program 1 times [2020-10-12 16:31:32,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:32,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198421725] [2020-10-12 16:31:32,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:32,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:32,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:32,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 16:31:32,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:32,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-12 16:31:32,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:32,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:31:32,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-12 16:31:32,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 16:31:32,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:32,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:32,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:32,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:32,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:32,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:32,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:31:32,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:32,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:32,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:32,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:32,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:32,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:32,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:32,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:32,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:32,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:32,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:32,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:32,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:32,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:32,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:32,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:32,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:32,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:32,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:32,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:32,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:32,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:32,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:32,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:32,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:32,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:32,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:31:32,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:32,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:32,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:32,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 16:31:32,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:32,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 16:31:32,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:32,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:31:32,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:32,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 16:31:32,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:32,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:31:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:32,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:32,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:32,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:31:32,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:32,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:31:32,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:32,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:32,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:32,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:31:32,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:32,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:32,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198421725] [2020-10-12 16:31:32,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:32,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 16:31:32,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991479767] [2020-10-12 16:31:32,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 16:31:32,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:32,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 16:31:32,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-12 16:31:32,751 INFO L87 Difference]: Start difference. First operand 584 states and 704 transitions. Second operand 14 states. [2020-10-12 16:31:34,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:34,431 INFO L93 Difference]: Finished difference Result 648 states and 777 transitions. [2020-10-12 16:31:34,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 16:31:34,432 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2020-10-12 16:31:34,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:34,434 INFO L225 Difference]: With dead ends: 648 [2020-10-12 16:31:34,434 INFO L226 Difference]: Without dead ends: 626 [2020-10-12 16:31:34,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-12 16:31:34,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2020-10-12 16:31:34,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 579. [2020-10-12 16:31:34,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-10-12 16:31:34,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 697 transitions. [2020-10-12 16:31:34,487 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 697 transitions. Word has length 61 [2020-10-12 16:31:34,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:34,487 INFO L479 AbstractCegarLoop]: Abstraction has 579 states and 697 transitions. [2020-10-12 16:31:34,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 16:31:34,487 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 697 transitions. [2020-10-12 16:31:34,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 16:31:34,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:34,489 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] [2020-10-12 16:31:34,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 16:31:34,489 INFO L427 AbstractCegarLoop]: === Iteration 28 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:34,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:34,489 INFO L82 PathProgramCache]: Analyzing trace with hash 448076210, now seen corresponding path program 1 times [2020-10-12 16:31:34,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:34,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412670373] [2020-10-12 16:31:34,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:34,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:34,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:34,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 16:31:34,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:34,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-12 16:31:34,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:34,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:31:34,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-12 16:31:34,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 16:31:34,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:34,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:34,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:34,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:34,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:34,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:34,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:34,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:34,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:34,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:34,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:34,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:34,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:34,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:34,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:34,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:34,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:34,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:34,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:34,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:34,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:34,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:34,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:34,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:34,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:34,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:34,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:34,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:34,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:34,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:34,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:34,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:34,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:34,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:34,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:34,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:34,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:34,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 16:31:34,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:34,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 16:31:34,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:34,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:31:34,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:34,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 16:31:34,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:34,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:31:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:34,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:34,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:34,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:31:34,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:34,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 16:31:34,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:34,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:34,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:34,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:31:34,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:34,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:34,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412670373] [2020-10-12 16:31:34,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:34,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 16:31:34,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026351294] [2020-10-12 16:31:34,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 16:31:34,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:34,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 16:31:34,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-12 16:31:34,992 INFO L87 Difference]: Start difference. First operand 579 states and 697 transitions. Second operand 14 states. [2020-10-12 16:31:36,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:36,889 INFO L93 Difference]: Finished difference Result 643 states and 770 transitions. [2020-10-12 16:31:36,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 16:31:36,889 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2020-10-12 16:31:36,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:36,893 INFO L225 Difference]: With dead ends: 643 [2020-10-12 16:31:36,893 INFO L226 Difference]: Without dead ends: 622 [2020-10-12 16:31:36,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-12 16:31:36,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2020-10-12 16:31:36,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 575. [2020-10-12 16:31:36,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-10-12 16:31:36,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 691 transitions. [2020-10-12 16:31:36,943 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 691 transitions. Word has length 61 [2020-10-12 16:31:36,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:36,943 INFO L479 AbstractCegarLoop]: Abstraction has 575 states and 691 transitions. [2020-10-12 16:31:36,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 16:31:36,943 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 691 transitions. [2020-10-12 16:31:36,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 16:31:36,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:36,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:31:36,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 16:31:36,945 INFO L427 AbstractCegarLoop]: === Iteration 29 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:36,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:36,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1415047769, now seen corresponding path program 1 times [2020-10-12 16:31:36,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:36,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551102779] [2020-10-12 16:31:36,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:36,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:37,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:37,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 16:31:37,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:37,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-12 16:31:37,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-12 16:31:37,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 16:31:37,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:37,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:37,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:37,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:37,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:37,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:37,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:37,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:37,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:37,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:37,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:37,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:37,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:37,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:37,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:37,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:37,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:37,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:37,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:37,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:37,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:37,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:37,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:37,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:37,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:37,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:37,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:37,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:37,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:37,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 16:31:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:37,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:37,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:37,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 16:31:37,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:37,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 16:31:37,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:37,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:37,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 16:31:37,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:37,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 16:31:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:37,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:37,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:37,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:31:37,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:37,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:31:37,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:37,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:37,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:37,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:31:37,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:37,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:31:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:37,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:37,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:37,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:37,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:37,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:37,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:37,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:37,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:37,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:31:37,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:37,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:31:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:37,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:37,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:37,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:37,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:37,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:37,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:37,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:37,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:37,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:31:37,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:37,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:37,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551102779] [2020-10-12 16:31:37,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:37,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 16:31:37,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761335160] [2020-10-12 16:31:37,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 16:31:37,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:37,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 16:31:37,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-12 16:31:37,327 INFO L87 Difference]: Start difference. First operand 575 states and 691 transitions. Second operand 9 states. [2020-10-12 16:31:38,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:38,522 INFO L93 Difference]: Finished difference Result 1019 states and 1241 transitions. [2020-10-12 16:31:38,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 16:31:38,523 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-10-12 16:31:38,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:38,527 INFO L225 Difference]: With dead ends: 1019 [2020-10-12 16:31:38,527 INFO L226 Difference]: Without dead ends: 766 [2020-10-12 16:31:38,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:31:38,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2020-10-12 16:31:38,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 696. [2020-10-12 16:31:38,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-10-12 16:31:38,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 839 transitions. [2020-10-12 16:31:38,617 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 839 transitions. Word has length 70 [2020-10-12 16:31:38,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:38,618 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 839 transitions. [2020-10-12 16:31:38,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 16:31:38,618 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 839 transitions. [2020-10-12 16:31:38,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 16:31:38,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:38,619 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] [2020-10-12 16:31:38,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 16:31:38,619 INFO L427 AbstractCegarLoop]: === Iteration 30 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:38,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:38,620 INFO L82 PathProgramCache]: Analyzing trace with hash -2008782879, now seen corresponding path program 1 times [2020-10-12 16:31:38,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:38,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895072850] [2020-10-12 16:31:38,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:38,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:38,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:38,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 16:31:38,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:38,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-12 16:31:38,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:38,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:31:38,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 16:31:38,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 16:31:38,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:38,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:38,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:38,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:38,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:38,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:38,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:38,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:38,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:38,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:38,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:38,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:38,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:38,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:38,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:38,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:38,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:38,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:38,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:38,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:39,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:39,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:39,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:39,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:39,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:39,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:39,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:39,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:39,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:39,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:39,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:39,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:39,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:39,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:39,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 16:31:39,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:39,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 16:31:39,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:39,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:31:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 16:31:39,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:39,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 16:31:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:39,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:39,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:39,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:31:39,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:39,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:31:39,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:39,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:31:39,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:39,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895072850] [2020-10-12 16:31:39,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:39,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 16:31:39,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936626460] [2020-10-12 16:31:39,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 16:31:39,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:39,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 16:31:39,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-12 16:31:39,170 INFO L87 Difference]: Start difference. First operand 696 states and 839 transitions. Second operand 14 states. [2020-10-12 16:31:40,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:40,892 INFO L93 Difference]: Finished difference Result 760 states and 913 transitions. [2020-10-12 16:31:40,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 16:31:40,893 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2020-10-12 16:31:40,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:40,897 INFO L225 Difference]: With dead ends: 760 [2020-10-12 16:31:40,897 INFO L226 Difference]: Without dead ends: 717 [2020-10-12 16:31:40,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-12 16:31:40,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2020-10-12 16:31:40,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 670. [2020-10-12 16:31:40,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2020-10-12 16:31:40,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 807 transitions. [2020-10-12 16:31:40,963 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 807 transitions. Word has length 65 [2020-10-12 16:31:40,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:40,964 INFO L479 AbstractCegarLoop]: Abstraction has 670 states and 807 transitions. [2020-10-12 16:31:40,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 16:31:40,964 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 807 transitions. [2020-10-12 16:31:40,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 16:31:40,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:40,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:31:40,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 16:31:40,966 INFO L427 AbstractCegarLoop]: === Iteration 31 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:40,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:40,966 INFO L82 PathProgramCache]: Analyzing trace with hash -305628131, now seen corresponding path program 1 times [2020-10-12 16:31:40,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:40,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665577044] [2020-10-12 16:31:40,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:41,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:41,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:41,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:41,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 16:31:41,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:31:41,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-12 16:31:41,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:41,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:41,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-12 16:31:41,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 16:31:41,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:41,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:41,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:41,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:41,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:41,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:41,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:41,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:41,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:41,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:41,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:41,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:41,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:41,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:41,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:41,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:41,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:41,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:41,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:41,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:41,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:41,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:41,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:41,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:41,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:41,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:41,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:41,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:41,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:41,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:41,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:41,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 16:31:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:41,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:41,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:41,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 16:31:41,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:41,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 16:31:41,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:41,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:41,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:41,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 16:31:41,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:41,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 16:31:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:41,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:41,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:41,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:31:41,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:41,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:41,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:41,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:41,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:41,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:41,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:31:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:41,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:41,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:41,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:41,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:41,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:41,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:41,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:41,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:41,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:41,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:41,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:31:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:41,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:41,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:41,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:41,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:41,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:41,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 16:31:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:41,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:41,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:41,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:41,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 16:31:41,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:31:41,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 16:31:41,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:41,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:41,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 16:31:41,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 16:31:41,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:41,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:41,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665577044] [2020-10-12 16:31:41,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:41,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 16:31:41,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532902168] [2020-10-12 16:31:41,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 16:31:41,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:41,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 16:31:41,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 16:31:41,450 INFO L87 Difference]: Start difference. First operand 670 states and 807 transitions. Second operand 11 states. [2020-10-12 16:31:43,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:43,012 INFO L93 Difference]: Finished difference Result 1021 states and 1238 transitions. [2020-10-12 16:31:43,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 16:31:43,013 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-10-12 16:31:43,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:43,017 INFO L225 Difference]: With dead ends: 1021 [2020-10-12 16:31:43,017 INFO L226 Difference]: Without dead ends: 704 [2020-10-12 16:31:43,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-10-12 16:31:43,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-10-12 16:31:43,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 651. [2020-10-12 16:31:43,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-10-12 16:31:43,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 776 transitions. [2020-10-12 16:31:43,077 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 776 transitions. Word has length 79 [2020-10-12 16:31:43,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:43,078 INFO L479 AbstractCegarLoop]: Abstraction has 651 states and 776 transitions. [2020-10-12 16:31:43,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 16:31:43,078 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 776 transitions. [2020-10-12 16:31:43,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 16:31:43,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:43,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:31:43,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 16:31:43,080 INFO L427 AbstractCegarLoop]: === Iteration 32 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:43,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:43,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1563127055, now seen corresponding path program 1 times [2020-10-12 16:31:43,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:43,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258027729] [2020-10-12 16:31:43,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:43,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:43,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:43,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:43,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 16:31:43,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:31:43,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-10-12 16:31:43,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:43,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:31:43,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-12 16:31:43,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:31:43,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:43,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:43,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:43,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:43,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:43,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:43,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:43,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:43,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:43,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:43,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:43,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:43,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:43,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:43,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:43,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:43,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:43,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:43,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:43,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:43,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:43,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:43,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:43,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:43,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:43,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:43,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:43,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:43,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:43,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:43,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:43,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 16:31:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:43,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:43,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:43,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:43,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 16:31:43,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:31:43,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 16:31:43,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:43,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 16:31:43,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:43,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 16:31:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:43,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:43,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:43,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:31:43,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:43,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:43,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:43,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:43,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:43,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:31:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:43,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:43,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:43,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:43,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:43,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:43,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:43,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:43,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:43,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:43,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:43,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:31:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:43,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:43,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:43,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:43,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:43,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:43,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:43,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:43,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:43,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:43,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:43,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 16:31:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:43,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:43,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:43,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 16:31:43,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:43,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:31:43,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:43,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:43,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 16:31:43,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:43,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:43,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:31:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:43,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:43,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:43,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 16:31:43,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:43,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:43,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:43,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:43,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:43,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:43,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:43,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:43,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258027729] [2020-10-12 16:31:43,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:43,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 16:31:43,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356798968] [2020-10-12 16:31:43,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 16:31:43,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:43,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 16:31:43,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-12 16:31:43,850 INFO L87 Difference]: Start difference. First operand 651 states and 776 transitions. Second operand 14 states. [2020-10-12 16:31:45,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:45,422 INFO L93 Difference]: Finished difference Result 1051 states and 1285 transitions. [2020-10-12 16:31:45,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 16:31:45,423 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 80 [2020-10-12 16:31:45,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:45,427 INFO L225 Difference]: With dead ends: 1051 [2020-10-12 16:31:45,428 INFO L226 Difference]: Without dead ends: 797 [2020-10-12 16:31:45,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-10-12 16:31:45,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2020-10-12 16:31:45,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 615. [2020-10-12 16:31:45,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-10-12 16:31:45,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 730 transitions. [2020-10-12 16:31:45,516 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 730 transitions. Word has length 80 [2020-10-12 16:31:45,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:45,517 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 730 transitions. [2020-10-12 16:31:45,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 16:31:45,517 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 730 transitions. [2020-10-12 16:31:45,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 16:31:45,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:45,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:31:45,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 16:31:45,519 INFO L427 AbstractCegarLoop]: === Iteration 33 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:45,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:45,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1758083560, now seen corresponding path program 1 times [2020-10-12 16:31:45,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:45,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63984554] [2020-10-12 16:31:45,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:45,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:45,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:45,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:48,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:48,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 16:31:48,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:31:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2732 [2020-10-12 16:31:48,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:31:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-12 16:31:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 16:31:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:48,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:48,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:48,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:48,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:48,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:48,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:48,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:48,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:48,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:48,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:48,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:48,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:48,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:48,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:48,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:48,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:48,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:48,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:48,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:48,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:48,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:48,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:48,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:48,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:48,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:48,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:48,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:48,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:48,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:48,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:48,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:48,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:48,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:48,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:48,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:48,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:48,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 16:31:48,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:31:48,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-12 16:31:48,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:31:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:48,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 16:31:48,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:48,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 16:31:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:48,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:48,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:48,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:31:48,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:48,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:48,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:48,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:48,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 16:31:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:48,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:48,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:48,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 16:31:48,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:48,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:48,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:48,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:48,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:48,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:48,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:48,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 16:31:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:48,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:48,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:48,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:31:48,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:48,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:31:48,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:48,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:48,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:48,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:31:48,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:48,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63984554] [2020-10-12 16:31:48,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:48,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 16:31:48,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515995567] [2020-10-12 16:31:48,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 16:31:48,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:48,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 16:31:48,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-12 16:31:48,756 INFO L87 Difference]: Start difference. First operand 615 states and 730 transitions. Second operand 16 states. [2020-10-12 16:31:50,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:50,625 INFO L93 Difference]: Finished difference Result 666 states and 791 transitions. [2020-10-12 16:31:50,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 16:31:50,626 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 77 [2020-10-12 16:31:50,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:50,628 INFO L225 Difference]: With dead ends: 666 [2020-10-12 16:31:50,629 INFO L226 Difference]: Without dead ends: 552 [2020-10-12 16:31:50,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-10-12 16:31:50,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2020-10-12 16:31:50,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 523. [2020-10-12 16:31:50,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2020-10-12 16:31:50,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 620 transitions. [2020-10-12 16:31:50,683 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 620 transitions. Word has length 77 [2020-10-12 16:31:50,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:50,683 INFO L479 AbstractCegarLoop]: Abstraction has 523 states and 620 transitions. [2020-10-12 16:31:50,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 16:31:50,683 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 620 transitions. [2020-10-12 16:31:50,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 16:31:50,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:50,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:31:50,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 16:31:50,685 INFO L427 AbstractCegarLoop]: === Iteration 34 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:50,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:50,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1613439747, now seen corresponding path program 1 times [2020-10-12 16:31:50,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:50,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293470627] [2020-10-12 16:31:50,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:50,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:50,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:50,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:51,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:51,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:52,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:52,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 16:31:52,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 16:31:52,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1414 [2020-10-12 16:31:52,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:52,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:31:52,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-12 16:31:52,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 16:31:52,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:52,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:52,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:52,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:52,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:52,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:52,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:52,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:52,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:52,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:52,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:52,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:52,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:52,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:52,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:52,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:52,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:52,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:52,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:52,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:52,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:52,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:52,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:52,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:52,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:52,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:52,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:52,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:52,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:52,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:52,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:52,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:52,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:52,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:52,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:52,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:52,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:52,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:52,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 16:31:52,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:31:52,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-12 16:31:52,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:52,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:31:52,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:52,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 16:31:52,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:52,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:31:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:52,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:52,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:52,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 16:31:52,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:52,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 16:31:52,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 16:31:52,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:52,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 16:31:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:52,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:52,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:52,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:31:52,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:52,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:52,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:52,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:52,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:31:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:52,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:52,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:52,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:52,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:52,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:52,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:52,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:52,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:52,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:52,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:31:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:52,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:52,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:52,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:52,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:52,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:52,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:52,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:52,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 16:31:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:52,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:52,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:52,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:31:52,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:52,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:52,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:31:52,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:52,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:52,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293470627] [2020-10-12 16:31:52,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:52,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 16:31:52,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991159204] [2020-10-12 16:31:52,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 16:31:52,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:52,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 16:31:52,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-12 16:31:52,726 INFO L87 Difference]: Start difference. First operand 523 states and 620 transitions. Second operand 16 states. [2020-10-12 16:31:54,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:54,162 INFO L93 Difference]: Finished difference Result 601 states and 711 transitions. [2020-10-12 16:31:54,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 16:31:54,162 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 84 [2020-10-12 16:31:54,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:54,165 INFO L225 Difference]: With dead ends: 601 [2020-10-12 16:31:54,166 INFO L226 Difference]: Without dead ends: 580 [2020-10-12 16:31:54,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2020-10-12 16:31:54,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-10-12 16:31:54,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 531. [2020-10-12 16:31:54,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-10-12 16:31:54,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 630 transitions. [2020-10-12 16:31:54,213 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 630 transitions. Word has length 84 [2020-10-12 16:31:54,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:54,213 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 630 transitions. [2020-10-12 16:31:54,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 16:31:54,213 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 630 transitions. [2020-10-12 16:31:54,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-12 16:31:54,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:54,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:31:54,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 16:31:54,215 INFO L427 AbstractCegarLoop]: === Iteration 35 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:54,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:54,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1695670967, now seen corresponding path program 1 times [2020-10-12 16:31:54,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:54,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764612669] [2020-10-12 16:31:54,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:54,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:54,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:54,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:54,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:54,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:55,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:55,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 16:31:55,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 16:31:55,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 954 [2020-10-12 16:31:55,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:55,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:31:55,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 16:31:55,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 16:31:55,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:55,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:55,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:55,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:55,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:55,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:55,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:55,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:55,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:55,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:55,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:55,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:55,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:55,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:55,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:55,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:55,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:55,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:55,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:55,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:55,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:55,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:55,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:55,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:55,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:55,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:55,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:55,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:55,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:55,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:55,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:55,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:55,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:55,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:55,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 16:31:55,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:55,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 16:31:55,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:55,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 16:31:55,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:55,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 16:31:55,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:55,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:31:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:55,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:55,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:55,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 16:31:55,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:55,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 16:31:55,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:55,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:31:55,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:55,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 16:31:55,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:55,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 16:31:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:55,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:55,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:55,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:31:55,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:55,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:55,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:55,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:55,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:55,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 16:31:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:55,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:55,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:55,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:55,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:55,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:55,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:55,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:55,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:55,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:55,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:55,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 16:31:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:55,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:55,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:55,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:55,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:55,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:55,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:55,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:55,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:55,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:55,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:55,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 16:31:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:55,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:55,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:55,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 16:31:55,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:55,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:55,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:55,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:55,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:55,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:31:55,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:55,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:55,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764612669] [2020-10-12 16:31:55,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:55,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 16:31:55,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268000339] [2020-10-12 16:31:55,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 16:31:55,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:55,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 16:31:55,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-12 16:31:55,604 INFO L87 Difference]: Start difference. First operand 531 states and 630 transitions. Second operand 16 states. [2020-10-12 16:31:57,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:57,042 INFO L93 Difference]: Finished difference Result 601 states and 710 transitions. [2020-10-12 16:31:57,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 16:31:57,043 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 85 [2020-10-12 16:31:57,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:57,046 INFO L225 Difference]: With dead ends: 601 [2020-10-12 16:31:57,046 INFO L226 Difference]: Without dead ends: 580 [2020-10-12 16:31:57,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2020-10-12 16:31:57,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-10-12 16:31:57,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 523. [2020-10-12 16:31:57,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2020-10-12 16:31:57,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 619 transitions. [2020-10-12 16:31:57,087 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 619 transitions. Word has length 85 [2020-10-12 16:31:57,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:57,087 INFO L479 AbstractCegarLoop]: Abstraction has 523 states and 619 transitions. [2020-10-12 16:31:57,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 16:31:57,087 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 619 transitions. [2020-10-12 16:31:57,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 16:31:57,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:57,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:31:57,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 16:31:57,088 INFO L427 AbstractCegarLoop]: === Iteration 36 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:57,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:57,089 INFO L82 PathProgramCache]: Analyzing trace with hash 628546054, now seen corresponding path program 1 times [2020-10-12 16:31:57,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:57,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077505206] [2020-10-12 16:31:57,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:57,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:57,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:57,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:57,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:57,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:57,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:57,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-12 16:31:57,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 16:31:57,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-12 16:31:57,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:57,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:31:57,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 16:31:57,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 16:31:57,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:57,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:57,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:57,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:57,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:57,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:57,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:57,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:57,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:57,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:57,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:57,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:57,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:57,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:57,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:57,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:57,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:57,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:57,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:57,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:57,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:57,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:57,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:57,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:57,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:57,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:57,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:57,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:57,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:57,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:31:57,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:57,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:57,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:57,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:57,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 16:31:57,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:57,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 16:31:57,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:57,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:31:57,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 16:31:57,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 16:31:57,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:57,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 16:31:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:57,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:57,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:57,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 16:31:57,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:57,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:31:57,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:57,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:57,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:57,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 16:31:57,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:57,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:57,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:57,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:57,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 16:31:57,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:57,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 16:31:57,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:57,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:31:57,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 16:31:57,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 16:31:57,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:57,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 16:31:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:57,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:57,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:57,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:31:57,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:57,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:31:57,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:57,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 16:31:57,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:57,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077505206] [2020-10-12 16:31:57,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:57,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 16:31:57,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733735981] [2020-10-12 16:31:57,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 16:31:57,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:57,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 16:31:57,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:31:57,776 INFO L87 Difference]: Start difference. First operand 523 states and 619 transitions. Second operand 13 states. [2020-10-12 16:31:59,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:31:59,381 INFO L93 Difference]: Finished difference Result 774 states and 897 transitions. [2020-10-12 16:31:59,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 16:31:59,382 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 79 [2020-10-12 16:31:59,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:31:59,385 INFO L225 Difference]: With dead ends: 774 [2020-10-12 16:31:59,385 INFO L226 Difference]: Without dead ends: 670 [2020-10-12 16:31:59,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2020-10-12 16:31:59,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-10-12 16:31:59,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 644. [2020-10-12 16:31:59,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2020-10-12 16:31:59,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 752 transitions. [2020-10-12 16:31:59,445 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 752 transitions. Word has length 79 [2020-10-12 16:31:59,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:31:59,445 INFO L479 AbstractCegarLoop]: Abstraction has 644 states and 752 transitions. [2020-10-12 16:31:59,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 16:31:59,446 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 752 transitions. [2020-10-12 16:31:59,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 16:31:59,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:31:59,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:31:59,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 16:31:59,447 INFO L427 AbstractCegarLoop]: === Iteration 37 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:31:59,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:31:59,447 INFO L82 PathProgramCache]: Analyzing trace with hash -424232780, now seen corresponding path program 1 times [2020-10-12 16:31:59,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:31:59,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650919115] [2020-10-12 16:31:59,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:31:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:59,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:59,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:59,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:59,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:59,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:59,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 16:31:59,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 16:31:59,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-12 16:31:59,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:31:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 16:31:59,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:31:59,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:59,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:31:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:59,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:59,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:59,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:59,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:59,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:59,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:59,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:59,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:59,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:59,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:59,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 16:31:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:59,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:59,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:59,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:59,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:59,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:59,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:59,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:59,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:59,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:59,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:59,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 16:31:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:59,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:59,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:59,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:31:59,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:59,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:59,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:59,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:59,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:59,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:59,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:59,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:59,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 16:31:59,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:59,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 16:31:59,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:59,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:59,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 16:31:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:59,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:59,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:59,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 16:31:59,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:59,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:31:59,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:59,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:59,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:59,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:59,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:59,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 16:31:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:59,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:59,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:59,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 16:31:59,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:59,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:31:59,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:59,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:59,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:59,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:59,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:59,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-12 16:31:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:31:59,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:31:59,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:31:59,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 16:31:59,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:31:59,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:31:59,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:31:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:31:59,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:31:59,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:31:59,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:31:59,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:31:59,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650919115] [2020-10-12 16:31:59,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:31:59,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 16:31:59,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763232868] [2020-10-12 16:31:59,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 16:31:59,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:31:59,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 16:31:59,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:31:59,845 INFO L87 Difference]: Start difference. First operand 644 states and 752 transitions. Second operand 10 states. [2020-10-12 16:32:00,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:32:00,898 INFO L93 Difference]: Finished difference Result 663 states and 770 transitions. [2020-10-12 16:32:00,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 16:32:00,904 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 80 [2020-10-12 16:32:00,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:32:00,907 INFO L225 Difference]: With dead ends: 663 [2020-10-12 16:32:00,907 INFO L226 Difference]: Without dead ends: 649 [2020-10-12 16:32:00,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-12 16:32:00,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2020-10-12 16:32:00,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 644. [2020-10-12 16:32:00,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2020-10-12 16:32:00,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 750 transitions. [2020-10-12 16:32:00,963 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 750 transitions. Word has length 80 [2020-10-12 16:32:00,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:32:00,964 INFO L479 AbstractCegarLoop]: Abstraction has 644 states and 750 transitions. [2020-10-12 16:32:00,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 16:32:00,964 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 750 transitions. [2020-10-12 16:32:00,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 16:32:00,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:32:00,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:32:00,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 16:32:00,965 INFO L427 AbstractCegarLoop]: === Iteration 38 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:32:00,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:32:00,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1664445418, now seen corresponding path program 1 times [2020-10-12 16:32:00,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:32:00,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868811743] [2020-10-12 16:32:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:32:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 16:32:00,981 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 16:32:00,981 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 16:32:00,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 16:32:01,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 04:32:01 BoogieIcfgContainer [2020-10-12 16:32:01,016 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 16:32:01,017 INFO L168 Benchmark]: Toolchain (without parser) took 98447.93 ms. Allocated memory was 140.0 MB in the beginning and 1.0 GB in the end (delta: 879.2 MB). Free memory was 100.8 MB in the beginning and 355.1 MB in the end (delta: -254.3 MB). Peak memory consumption was 625.0 MB. Max. memory is 7.1 GB. [2020-10-12 16:32:01,018 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 16:32:01,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 605.22 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 174.3 MB in the end (delta: -73.7 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. [2020-10-12 16:32:01,018 INFO L168 Benchmark]: Boogie Preprocessor took 82.85 ms. Allocated memory is still 203.4 MB. Free memory was 174.3 MB in the beginning and 170.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2020-10-12 16:32:01,019 INFO L168 Benchmark]: RCFGBuilder took 1226.05 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 170.0 MB in the beginning and 199.8 MB in the end (delta: -29.8 MB). Peak memory consumption was 85.3 MB. Max. memory is 7.1 GB. [2020-10-12 16:32:01,019 INFO L168 Benchmark]: TraceAbstraction took 96528.82 ms. Allocated memory was 236.5 MB in the beginning and 1.0 GB in the end (delta: 782.8 MB). Free memory was 198.3 MB in the beginning and 355.1 MB in the end (delta: -156.8 MB). Peak memory consumption was 626.0 MB. Max. memory is 7.1 GB. [2020-10-12 16:32:01,021 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 605.22 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 174.3 MB in the end (delta: -73.7 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.85 ms. Allocated memory is still 203.4 MB. Free memory was 174.3 MB in the beginning and 170.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1226.05 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 170.0 MB in the beginning and 199.8 MB in the end (delta: -29.8 MB). Peak memory consumption was 85.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 96528.82 ms. Allocated memory was 236.5 MB in the beginning and 1.0 GB in the end (delta: 782.8 MB). Free memory was 198.3 MB in the beginning and 355.1 MB in the end (delta: -156.8 MB). Peak memory consumption was 626.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 63]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L34] int FloppyThread ; [L35] int KernelMode ; [L36] int Suspended ; [L37] int Executive ; [L38] int DiskController ; [L39] int FloppyDiskPeripheral ; [L40] int FlConfigCallBack ; [L41] int MaximumInterfaceType ; [L42] int MOUNTDEV_MOUNTED_DEVICE_GUID ; [L43] int myStatus ; [L44] int s ; [L45] int UNLOADED ; [L46] int NP ; [L47] int DC ; [L48] int SKIP1 ; [L49] int SKIP2 ; [L50] int MPR1 ; [L51] int MPR3 ; [L52] int IPC ; [L53] int pended ; [L54] int compRegistered ; [L55] int lowerDriverReturn ; [L56] int setEventCalled ; [L57] int customIrp ; [L89] int PagingReferenceCount = 0; [L90] int PagingMutex = 0; [L669] int status ; [L670] int irp = __VERIFIER_nondet_int() ; [L671] int pirp ; [L672] int pirp__IoStatus__Status ; [L673] int irp_choice = __VERIFIER_nondet_int() ; [L674] int devobj = __VERIFIER_nondet_int() ; [L675] int __cil_tmp8 ; [L677] FloppyThread = 0 [L678] KernelMode = 0 [L679] Suspended = 0 [L680] Executive = 0 [L681] DiskController = 0 [L682] FloppyDiskPeripheral = 0 [L683] FlConfigCallBack = 0 [L684] MaximumInterfaceType = 0 [L685] MOUNTDEV_MOUNTED_DEVICE_GUID = 0 [L686] myStatus = 0 [L687] s = 0 [L688] UNLOADED = 0 [L689] NP = 0 [L690] DC = 0 [L691] SKIP1 = 0 [L692] SKIP2 = 0 [L693] MPR1 = 0 [L694] MPR3 = 0 [L695] IPC = 0 [L696] pended = 0 [L697] compRegistered = 0 [L698] lowerDriverReturn = 0 [L699] setEventCalled = 0 [L700] customIrp = 0 [L704] status = 0 [L705] pirp = irp [L706] CALL _BLAST_init() [L72] UNLOADED = 0 [L73] NP = 1 [L74] DC = 2 [L75] SKIP1 = 3 [L76] SKIP2 = 4 [L77] MPR1 = 5 [L78] MPR3 = 6 [L79] IPC = 7 [L80] s = UNLOADED [L81] pended = 0 [L82] compRegistered = 0 [L83] lowerDriverReturn = 0 [L84] setEventCalled = 0 [L85] customIrp = 0 [L706] RET _BLAST_init() [L708] COND TRUE status >= 0 [L709] s = NP [L710] customIrp = 0 [L711] setEventCalled = customIrp [L712] lowerDriverReturn = setEventCalled [L713] compRegistered = lowerDriverReturn [L714] pended = compRegistered [L715] pirp__IoStatus__Status = 0 [L716] myStatus = 0 [L717] COND TRUE irp_choice == 0 [L718] pirp__IoStatus__Status = -1073741637 [L719] myStatus = -1073741637 [L722] CALL stub_driver_init() [L659] s = NP [L660] pended = 0 [L661] compRegistered = 0 [L662] lowerDriverReturn = 0 [L663] setEventCalled = 0 [L664] customIrp = 0 [L722] RET stub_driver_init() [L725] COND FALSE !(status < 0) [L729] int tmp_ndt_1; [L730] tmp_ndt_1 = __VERIFIER_nondet_int() [L731] COND TRUE tmp_ndt_1 == 3 [L738] CALL, EXPR FloppyPnp(devobj, pirp) [L162] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L163] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L164] int Irp__IoStatus__Information ; [L165] int Irp__IoStatus__Status ; [L166] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L167] int disketteExtension__IsRemoved = __VERIFIER_nondet_int() ; [L168] int disketteExtension__IsStarted = __VERIFIER_nondet_int() ; [L169] int disketteExtension__TargetObject = __VERIFIER_nondet_int() ; [L170] int disketteExtension__HoldNewRequests ; [L171] int disketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L172] int disketteExtension__InterfaceString__Buffer = __VERIFIER_nondet_int() ; [L173] int disketteExtension__InterfaceString = __VERIFIER_nondet_int() ; [L174] int disketteExtension__ArcName__Length = __VERIFIER_nondet_int() ; [L175] int disketteExtension__ArcName = __VERIFIER_nondet_int() ; [L176] int irpSp__MinorFunction = __VERIFIER_nondet_int() ; [L177] int IoGetConfigurationInformation__FloppyCount = __VERIFIER_nondet_int() ; [L178] int irpSp ; [L179] int disketteExtension ; [L180] int ntStatus ; [L181] int doneEvent = __VERIFIER_nondet_int() ; [L182] int irpSp___0 ; [L183] int nextIrpSp ; [L184] int nextIrpSp__Control ; [L185] int irpSp___1 ; [L186] int irpSp__Context ; [L187] int irpSp__Control ; [L188] long __cil_tmp29 ; [L189] long __cil_tmp30 ; [L192] ntStatus = 0 [L193] PagingReferenceCount ++ [L194] COND TRUE PagingReferenceCount == 1 [L197] disketteExtension = DeviceObject__DeviceExtension [L198] irpSp = Irp__Tail__Overlay__CurrentStackLocation [L199] COND FALSE !(\read(disketteExtension__IsRemoved)) [L208] COND FALSE !(irpSp__MinorFunction == 0) [L211] COND TRUE irpSp__MinorFunction == 5 [L237] COND TRUE irpSp__MinorFunction == 5 [L240] COND FALSE !(! disketteExtension__IsStarted) [L256] disketteExtension__HoldNewRequests = 1 [L257] CALL, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L99] int status ; [L100] int threadHandle = __VERIFIER_nondet_int() ; [L101] int DisketteExtension__PoweringDown = __VERIFIER_nondet_int() ; [L102] int DisketteExtension__ThreadReferenceCount = __VERIFIER_nondet_int() ; [L103] int DisketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L104] int Irp__IoStatus__Status ; [L105] int Irp__IoStatus__Information ; [L106] int Irp__Tail__Overlay__CurrentStackLocation__Control ; [L107] int ObjAttributes = __VERIFIER_nondet_int() ; [L108] int __cil_tmp12 ; [L109] int __cil_tmp13 ; [L112] COND FALSE !(DisketteExtension__PoweringDown == 1) [L118] DisketteExtension__ThreadReferenceCount ++ [L119] COND FALSE !(DisketteExtension__ThreadReferenceCount == 0) [L151] COND TRUE pended == 0 [L152] pended = 1 [L158] return (259); [L257] RET, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L257] ntStatus = FlQueueIrpToThread(Irp, disketteExtension) [L260] __cil_tmp29 = (long )ntStatus [L261] COND TRUE __cil_tmp29 == 259L [L263-L264] CALL KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) [L1034] COND FALSE !(s == MPR3) [L1043] COND FALSE !(customIrp == 1) [L1047] COND FALSE !(s == MPR3) [L1054] int tmp_ndt_8; [L1055] tmp_ndt_8 = __VERIFIER_nondet_int() [L1056] COND TRUE tmp_ndt_8 == 0 [L1062] return (0); [L263-L264] RET KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) [L266] COND FALSE !(disketteExtension__FloppyThread != 0) [L269] disketteExtension__FloppyThread = 0 [L270] Irp__IoStatus__Status = 0 [L271] myStatus = 0 [L272] COND TRUE s == NP [L273] s = SKIP1 [L280] Irp__CurrentLocation ++ [L281] Irp__Tail__Overlay__CurrentStackLocation ++ [L282] CALL, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) [L936] int returnVal2 ; [L937] int compRetStatus1 ; [L938] int lcontext = __VERIFIER_nondet_int() ; [L939] unsigned long __cil_tmp7 ; [L942] COND FALSE !(\read(compRegistered)) [L955] int tmp_ndt_12; [L956] tmp_ndt_12 = __VERIFIER_nondet_int() [L957] COND TRUE tmp_ndt_12 == 0 [L968] returnVal2 = 0 [L981] COND FALSE !(s == NP) [L985] COND FALSE !(s == MPR1) [L994] COND TRUE s == SKIP1 [L995] s = SKIP2 [L996] lowerDriverReturn = returnVal2 [L1004] return (returnVal2); [L282] RET, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) [L282] ntStatus = IofCallDriver(disketteExtension__TargetObject, Irp) [L428] PagingReferenceCount -- [L429] COND TRUE PagingReferenceCount == 0 [L432] return (ntStatus); [L738] RET, EXPR FloppyPnp(devobj, pirp) [L738] status = FloppyPnp(devobj, pirp) [L748] COND TRUE pended == 1 [L749] COND FALSE !(s == NP) [L756] COND TRUE pended == 1 [L757] COND FALSE !(s == MPR3) [L764] COND TRUE s != UNLOADED [L765] COND TRUE status != -1 [L766] COND FALSE !(s != SKIP2) [L780] COND TRUE pended == 1 [L781] COND TRUE status != 259 [L782] CALL errorFn() [L63] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 26 procedures, 305 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 96.4s, OverallIterations: 38, TraceHistogramMax: 1, AutomataDifference: 61.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12697 SDtfs, 17264 SDslu, 24805 SDs, 0 SdLazy, 45521 SolverSat, 5722 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 42.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 834 GetRequests, 348 SyntacticMatches, 1 SemanticMatches, 485 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 11.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1142occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 37 MinimizatonAttempts, 3034 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 29.9s InterpolantComputationTime, 2121 NumberOfCodeBlocks, 2121 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 2002 ConstructedInterpolants, 0 QuantifiedInterpolants, 533505 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 37 InterpolantComputations, 37 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...