/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 02:03:18,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 02:03:18,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 02:03:18,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 02:03:18,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 02:03:18,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 02:03:18,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 02:03:18,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 02:03:18,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 02:03:18,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 02:03:18,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 02:03:18,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 02:03:18,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 02:03:18,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 02:03:18,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 02:03:18,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 02:03:18,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 02:03:18,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 02:03:18,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 02:03:18,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 02:03:18,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 02:03:18,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 02:03:18,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 02:03:18,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 02:03:18,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 02:03:18,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 02:03:18,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 02:03:18,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 02:03:18,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 02:03:18,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 02:03:18,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 02:03:18,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 02:03:18,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 02:03:18,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 02:03:18,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 02:03:18,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 02:03:18,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 02:03:18,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 02:03:18,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 02:03:18,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 02:03:18,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 02:03:18,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 02:03:18,428 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 02:03:18,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 02:03:18,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 02:03:18,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 02:03:18,434 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 02:03:18,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 02:03:18,435 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 02:03:18,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 02:03:18,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 02:03:18,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 02:03:18,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 02:03:18,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 02:03:18,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 02:03:18,437 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 02:03:18,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 02:03:18,438 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 02:03:18,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 02:03:18,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 02:03:18,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 02:03:18,439 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 02:03:18,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 02:03:18,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 02:03:18,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 02:03:18,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 02:03:18,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 02:03:18,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 02:03:18,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 02:03:18,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 02:03:18,441 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 02:03:18,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 02:03:18,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 02:03:18,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 02:03:18,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 02:03:18,901 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 02:03:18,902 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 02:03:18,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c [2020-10-27 02:03:18,982 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a5239f44/5e4f2d88faa04fb780ffb409810b0d66/FLAG964e2a28c [2020-10-27 02:03:19,811 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 02:03:19,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c [2020-10-27 02:03:19,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a5239f44/5e4f2d88faa04fb780ffb409810b0d66/FLAG964e2a28c [2020-10-27 02:03:20,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a5239f44/5e4f2d88faa04fb780ffb409810b0d66 [2020-10-27 02:03:20,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 02:03:20,143 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 02:03:20,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 02:03:20,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 02:03:20,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 02:03:20,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:03:20" (1/1) ... [2020-10-27 02:03:20,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2178c960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:20, skipping insertion in model container [2020-10-27 02:03:20,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:03:20" (1/1) ... [2020-10-27 02:03:20,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 02:03:20,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 02:03:20,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 02:03:20,594 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 02:03:20,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 02:03:20,717 INFO L208 MainTranslator]: Completed translation [2020-10-27 02:03:20,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:20 WrapperNode [2020-10-27 02:03:20,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 02:03:20,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 02:03:20,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 02:03:20,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 02:03:20,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:20" (1/1) ... [2020-10-27 02:03:20,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:20" (1/1) ... [2020-10-27 02:03:20,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:20" (1/1) ... [2020-10-27 02:03:20,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:20" (1/1) ... [2020-10-27 02:03:20,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:20" (1/1) ... [2020-10-27 02:03:20,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:20" (1/1) ... [2020-10-27 02:03:20,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:20" (1/1) ... [2020-10-27 02:03:20,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 02:03:20,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 02:03:20,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 02:03:20,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 02:03:20,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 02:03:20,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 02:03:20,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 02:03:20,919 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 02:03:20,919 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-27 02:03:20,919 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-27 02:03:20,919 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2020-10-27 02:03:20,919 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2020-10-27 02:03:20,919 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2020-10-27 02:03:20,920 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2020-10-27 02:03:20,920 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2020-10-27 02:03:20,920 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2020-10-27 02:03:20,920 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2020-10-27 02:03:20,920 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-27 02:03:20,920 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 02:03:20,920 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2020-10-27 02:03:20,921 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2020-10-27 02:03:20,921 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2020-10-27 02:03:20,921 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2020-10-27 02:03:20,921 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2020-10-27 02:03:20,921 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-27 02:03:20,921 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-27 02:03:20,922 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-27 02:03:20,922 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-27 02:03:20,922 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-27 02:03:20,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2020-10-27 02:03:20,922 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2020-10-27 02:03:20,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2020-10-27 02:03:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 02:03:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 02:03:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 02:03:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 02:03:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 02:03:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 02:03:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-27 02:03:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2020-10-27 02:03:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2020-10-27 02:03:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2020-10-27 02:03:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2020-10-27 02:03:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2020-10-27 02:03:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2020-10-27 02:03:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2020-10-27 02:03:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2020-10-27 02:03:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2020-10-27 02:03:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2020-10-27 02:03:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2020-10-27 02:03:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-27 02:03:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-27 02:03:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-27 02:03:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2020-10-27 02:03:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2020-10-27 02:03:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2020-10-27 02:03:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-27 02:03:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-27 02:03:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-27 02:03:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2020-10-27 02:03:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-27 02:03:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 02:03:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-27 02:03:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 02:03:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 02:03:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 02:03:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 02:03:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 02:03:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 02:03:21,264 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:03:21,305 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 02:03:21,306 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 02:03:21,318 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:03:21,348 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 02:03:21,348 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 02:03:21,356 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:03:21,598 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2020-10-27 02:03:21,599 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2020-10-27 02:03:21,603 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:03:21,730 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2020-10-27 02:03:21,731 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2020-10-27 02:03:21,748 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:03:21,779 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-27 02:03:21,780 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-27 02:03:21,929 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:03:21,938 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 02:03:21,938 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 02:03:21,939 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:03:21,950 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 02:03:21,951 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 02:03:21,951 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:03:21,968 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 02:03:21,969 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 02:03:22,024 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:03:22,063 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-10-27 02:03:22,063 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-10-27 02:03:22,098 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:03:22,104 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 02:03:22,104 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 02:03:22,105 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:03:22,113 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 02:03:22,113 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 02:03:22,114 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-27 02:03:22,119 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-27 02:03:22,120 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-27 02:03:22,143 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 02:03:22,144 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 02:03:22,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:03:22 BoogieIcfgContainer [2020-10-27 02:03:22,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 02:03:22,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 02:03:22,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 02:03:22,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 02:03:22,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:03:20" (1/3) ... [2020-10-27 02:03:22,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b566127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:03:22, skipping insertion in model container [2020-10-27 02:03:22,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:03:20" (2/3) ... [2020-10-27 02:03:22,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b566127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:03:22, skipping insertion in model container [2020-10-27 02:03:22,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:03:22" (3/3) ... [2020-10-27 02:03:22,156 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-1.c [2020-10-27 02:03:22,169 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 02:03:22,175 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 02:03:22,189 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 02:03:22,221 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 02:03:22,221 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 02:03:22,221 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 02:03:22,221 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 02:03:22,222 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 02:03:22,222 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 02:03:22,222 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 02:03:22,222 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 02:03:22,249 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2020-10-27 02:03:22,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 02:03:22,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:03:22,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:03:22,259 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:03:22,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:03:22,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1070575043, now seen corresponding path program 1 times [2020-10-27 02:03:22,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:03:22,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026387178] [2020-10-27 02:03:22,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:03:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:22,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:22,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:22,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:22,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:22,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:22,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:23,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:23,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 02:03:23,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 02:03:23,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 931 [2020-10-27 02:03:23,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:23,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:23,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 02:03:23,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 02:03:23,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 02:03:23,648 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:03:23,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:03:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:23,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:23,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:23,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:23,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:23,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 02:03:23,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:23,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:23,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:23,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:23,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:23,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:03:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:23,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:23,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:23,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:23,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:23,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 02:03:23,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:03:23,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:23,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:03:23,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026387178] [2020-10-27 02:03:23,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:03:23,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 02:03:23,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084453567] [2020-10-27 02:03:23,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 02:03:23,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:03:23,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 02:03:23,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 02:03:23,815 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 5 states. [2020-10-27 02:03:25,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:03:25,462 INFO L93 Difference]: Finished difference Result 545 states and 789 transitions. [2020-10-27 02:03:25,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 02:03:25,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-27 02:03:25,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:03:25,495 INFO L225 Difference]: With dead ends: 545 [2020-10-27 02:03:25,495 INFO L226 Difference]: Without dead ends: 325 [2020-10-27 02:03:25,512 INFO L677 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 [2020-10-27 02:03:25,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-27 02:03:25,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 295. [2020-10-27 02:03:25,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-27 02:03:25,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 389 transitions. [2020-10-27 02:03:25,638 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 389 transitions. Word has length 21 [2020-10-27 02:03:25,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:03:25,638 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 389 transitions. [2020-10-27 02:03:25,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 02:03:25,638 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 389 transitions. [2020-10-27 02:03:25,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 02:03:25,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:03:25,641 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] [2020-10-27 02:03:25,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 02:03:25,641 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:03:25,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:03:25,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1559854147, now seen corresponding path program 1 times [2020-10-27 02:03:25,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:03:25,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835770839] [2020-10-27 02:03:25,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:03:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:25,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:26,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:26,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 02:03:26,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:26,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-27 02:03:26,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:03:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 02:03:26,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 02:03:26,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:26,251 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:03:26,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:03:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:26,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:26,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:26,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:26,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:26,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 02:03:26,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:26,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:26,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:26,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:26,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:26,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:03:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:26,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:26,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:26,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:26,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:26,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:03:26,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:26,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:26,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:26,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:26,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:26,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:03:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:26,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:26,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:26,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:26,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:26,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:03:26,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:26,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:26,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:03:26,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 02:03:26,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:03:26,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835770839] [2020-10-27 02:03:26,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:03:26,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 02:03:26,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636348847] [2020-10-27 02:03:26,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 02:03:26,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:03:26,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 02:03:26,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 02:03:26,441 INFO L87 Difference]: Start difference. First operand 295 states and 389 transitions. Second operand 6 states. [2020-10-27 02:03:26,608 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:03:29,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:03:29,380 INFO L93 Difference]: Finished difference Result 646 states and 868 transitions. [2020-10-27 02:03:29,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 02:03:29,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-27 02:03:29,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:03:29,388 INFO L225 Difference]: With dead ends: 646 [2020-10-27 02:03:29,388 INFO L226 Difference]: Without dead ends: 482 [2020-10-27 02:03:29,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-27 02:03:29,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-10-27 02:03:29,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 432. [2020-10-27 02:03:29,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2020-10-27 02:03:29,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 574 transitions. [2020-10-27 02:03:29,475 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 574 transitions. Word has length 29 [2020-10-27 02:03:29,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:03:29,475 INFO L481 AbstractCegarLoop]: Abstraction has 432 states and 574 transitions. [2020-10-27 02:03:29,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 02:03:29,476 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 574 transitions. [2020-10-27 02:03:29,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-27 02:03:29,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:03:29,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:03:29,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 02:03:29,477 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:03:29,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:03:29,478 INFO L82 PathProgramCache]: Analyzing trace with hash -556513675, now seen corresponding path program 1 times [2020-10-27 02:03:29,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:03:29,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283839396] [2020-10-27 02:03:29,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:03:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:29,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:29,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:29,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 02:03:29,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:29,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-27 02:03:29,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:03:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 02:03:29,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 02:03:29,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:30,007 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:03:30,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:03:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:30,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:30,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:30,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:30,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:30,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 02:03:30,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:30,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:30,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:30,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:30,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:30,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:03:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:30,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:30,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:30,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:30,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:30,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:03:30,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:30,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:30,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:30,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:30,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:30,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:03:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:30,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:30,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:30,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:30,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:30,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:03:30,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:30,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:30,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:30,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:03:30,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:30,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:03:30,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283839396] [2020-10-27 02:03:30,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:03:30,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 02:03:30,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048655657] [2020-10-27 02:03:30,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 02:03:30,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:03:30,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 02:03:30,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 02:03:30,113 INFO L87 Difference]: Start difference. First operand 432 states and 574 transitions. Second operand 6 states. [2020-10-27 02:03:30,314 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:03:32,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:03:32,461 INFO L93 Difference]: Finished difference Result 952 states and 1269 transitions. [2020-10-27 02:03:32,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 02:03:32,462 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-27 02:03:32,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:03:32,469 INFO L225 Difference]: With dead ends: 952 [2020-10-27 02:03:32,469 INFO L226 Difference]: Without dead ends: 681 [2020-10-27 02:03:32,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-27 02:03:32,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2020-10-27 02:03:32,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 635. [2020-10-27 02:03:32,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2020-10-27 02:03:32,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 849 transitions. [2020-10-27 02:03:32,586 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 849 transitions. Word has length 31 [2020-10-27 02:03:32,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:03:32,586 INFO L481 AbstractCegarLoop]: Abstraction has 635 states and 849 transitions. [2020-10-27 02:03:32,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 02:03:32,586 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 849 transitions. [2020-10-27 02:03:32,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 02:03:32,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:03:32,588 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] [2020-10-27 02:03:32,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 02:03:32,589 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:03:32,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:03:32,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1447288085, now seen corresponding path program 1 times [2020-10-27 02:03:32,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:03:32,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070792238] [2020-10-27 02:03:32,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:03:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:32,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:32,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:32,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 02:03:32,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:32,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-27 02:03:32,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:32,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:03:32,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 02:03:32,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 02:03:32,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:33,076 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:03:33,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:03:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:33,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:33,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:33,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:33,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:33,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 02:03:33,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:33,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:33,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:33,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:33,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:33,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:03:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:33,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:33,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:33,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:33,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:33,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:03:33,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:33,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:33,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:03:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:33,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:33,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:33,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:33,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:33,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:03:33,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:33,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:33,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:33,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:03:33,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:03:33,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070792238] [2020-10-27 02:03:33,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:03:33,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 02:03:33,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835866730] [2020-10-27 02:03:33,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 02:03:33,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:03:33,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 02:03:33,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 02:03:33,196 INFO L87 Difference]: Start difference. First operand 635 states and 849 transitions. Second operand 6 states. [2020-10-27 02:03:33,357 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:03:34,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:03:34,890 INFO L93 Difference]: Finished difference Result 746 states and 989 transitions. [2020-10-27 02:03:34,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 02:03:34,893 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-10-27 02:03:34,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:03:34,899 INFO L225 Difference]: With dead ends: 746 [2020-10-27 02:03:34,899 INFO L226 Difference]: Without dead ends: 725 [2020-10-27 02:03:34,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-27 02:03:34,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2020-10-27 02:03:34,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 679. [2020-10-27 02:03:34,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2020-10-27 02:03:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 907 transitions. [2020-10-27 02:03:34,988 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 907 transitions. Word has length 35 [2020-10-27 02:03:34,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:03:34,989 INFO L481 AbstractCegarLoop]: Abstraction has 679 states and 907 transitions. [2020-10-27 02:03:34,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 02:03:34,989 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 907 transitions. [2020-10-27 02:03:34,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 02:03:34,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:03:34,992 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] [2020-10-27 02:03:34,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 02:03:34,992 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:03:34,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:03:34,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1309836000, now seen corresponding path program 1 times [2020-10-27 02:03:34,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:03:34,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397808990] [2020-10-27 02:03:34,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:03:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:35,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:35,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:35,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:36,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:36,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 02:03:36,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:03:36,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1428 [2020-10-27 02:03:36,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:03:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:03:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 02:03:36,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:36,637 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:03:36,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:03:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:36,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:36,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:36,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:36,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:36,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 02:03:36,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:36,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:36,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:03:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:36,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:36,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:36,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:36,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:36,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:03:36,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:36,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:36,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:36,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:03:36,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:36,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:03:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:36,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:36,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:36,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:36,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:36,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:03:36,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:36,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:03:36,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:36,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:03:36,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:36,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 02:03:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:36,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:36,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:36,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:03:36,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:36,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 02:03:36,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:03:36,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:36,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:03:36,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397808990] [2020-10-27 02:03:36,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:03:36,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 02:03:36,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791629917] [2020-10-27 02:03:36,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 02:03:36,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:03:36,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 02:03:36,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 02:03:36,832 INFO L87 Difference]: Start difference. First operand 679 states and 907 transitions. Second operand 9 states. [2020-10-27 02:03:36,985 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:03:37,320 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-27 02:03:37,767 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:03:38,533 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 02:03:41,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:03:41,215 INFO L93 Difference]: Finished difference Result 1379 states and 1839 transitions. [2020-10-27 02:03:41,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 02:03:41,216 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-10-27 02:03:41,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:03:41,225 INFO L225 Difference]: With dead ends: 1379 [2020-10-27 02:03:41,225 INFO L226 Difference]: Without dead ends: 929 [2020-10-27 02:03:41,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-27 02:03:41,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2020-10-27 02:03:41,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 736. [2020-10-27 02:03:41,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-10-27 02:03:41,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 978 transitions. [2020-10-27 02:03:41,342 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 978 transitions. Word has length 42 [2020-10-27 02:03:41,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:03:41,345 INFO L481 AbstractCegarLoop]: Abstraction has 736 states and 978 transitions. [2020-10-27 02:03:41,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 02:03:41,345 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 978 transitions. [2020-10-27 02:03:41,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 02:03:41,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:03:41,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:03:41,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 02:03:41,350 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:03:41,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:03:41,350 INFO L82 PathProgramCache]: Analyzing trace with hash -365576779, now seen corresponding path program 1 times [2020-10-27 02:03:41,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:03:41,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327490214] [2020-10-27 02:03:41,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:03:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:41,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:41,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:41,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 02:03:41,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:41,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-27 02:03:41,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:41,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:03:41,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 02:03:41,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 02:03:41,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:41,684 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:03:41,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:03:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:41,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:41,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:41,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:41,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:41,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 02:03:41,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:41,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:41,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:41,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:41,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:41,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:03:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:41,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:41,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:41,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:41,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:41,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:03:41,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:41,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:41,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:03:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:41,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:41,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:41,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:41,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:41,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:03:41,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:41,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:41,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:03:41,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327490214] [2020-10-27 02:03:41,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:03:41,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 02:03:41,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450433065] [2020-10-27 02:03:41,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 02:03:41,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:03:41,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 02:03:41,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 02:03:41,789 INFO L87 Difference]: Start difference. First operand 736 states and 978 transitions. Second operand 6 states. [2020-10-27 02:03:41,932 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:03:43,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:03:43,748 INFO L93 Difference]: Finished difference Result 764 states and 1013 transitions. [2020-10-27 02:03:43,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 02:03:43,748 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-10-27 02:03:43,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:03:43,756 INFO L225 Difference]: With dead ends: 764 [2020-10-27 02:03:43,756 INFO L226 Difference]: Without dead ends: 760 [2020-10-27 02:03:43,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 02:03:43,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2020-10-27 02:03:43,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 747. [2020-10-27 02:03:43,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2020-10-27 02:03:43,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 992 transitions. [2020-10-27 02:03:43,887 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 992 transitions. Word has length 41 [2020-10-27 02:03:43,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:03:43,888 INFO L481 AbstractCegarLoop]: Abstraction has 747 states and 992 transitions. [2020-10-27 02:03:43,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 02:03:43,888 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 992 transitions. [2020-10-27 02:03:43,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 02:03:43,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:03:43,891 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] [2020-10-27 02:03:43,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 02:03:43,892 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:03:43,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:03:43,892 INFO L82 PathProgramCache]: Analyzing trace with hash -435717580, now seen corresponding path program 1 times [2020-10-27 02:03:43,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:03:43,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883607370] [2020-10-27 02:03:43,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:03:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:43,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:44,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:44,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 02:03:44,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:44,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 02:03:44,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 02:03:44,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 02:03:44,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 02:03:44,195 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:03:44,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:03:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:44,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:44,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:44,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:44,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:44,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 02:03:44,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:44,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:44,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:03:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:44,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:44,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:44,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:44,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:44,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:03:44,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:44,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:44,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:44,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:44,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:44,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:03:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:44,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:44,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:44,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:44,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:44,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:03:44,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:44,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:44,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:44,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:44,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:44,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:03:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:44,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:44,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:44,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 02:03:44,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:44,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 02:03:44,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:44,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:44,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:44,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 02:03:44,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:44,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 02:03:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:44,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:44,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:44,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:03:44,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:44,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:03:44,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:44,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 02:03:44,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 02:03:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:03:44,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883607370] [2020-10-27 02:03:44,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:03:44,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 02:03:44,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638467467] [2020-10-27 02:03:44,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 02:03:44,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:03:44,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 02:03:44,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 02:03:44,408 INFO L87 Difference]: Start difference. First operand 747 states and 992 transitions. Second operand 8 states. [2020-10-27 02:03:44,562 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:03:46,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:03:46,567 INFO L93 Difference]: Finished difference Result 826 states and 1090 transitions. [2020-10-27 02:03:46,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 02:03:46,568 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-10-27 02:03:46,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:03:46,573 INFO L225 Difference]: With dead ends: 826 [2020-10-27 02:03:46,574 INFO L226 Difference]: Without dead ends: 820 [2020-10-27 02:03:46,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 02:03:46,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-10-27 02:03:46,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 788. [2020-10-27 02:03:46,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 788 states. [2020-10-27 02:03:46,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1042 transitions. [2020-10-27 02:03:46,667 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1042 transitions. Word has length 42 [2020-10-27 02:03:46,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:03:46,667 INFO L481 AbstractCegarLoop]: Abstraction has 788 states and 1042 transitions. [2020-10-27 02:03:46,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 02:03:46,668 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1042 transitions. [2020-10-27 02:03:46,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 02:03:46,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:03:46,669 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] [2020-10-27 02:03:46,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 02:03:46,669 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:03:46,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:03:46,670 INFO L82 PathProgramCache]: Analyzing trace with hash 530388703, now seen corresponding path program 1 times [2020-10-27 02:03:46,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:03:46,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216995578] [2020-10-27 02:03:46,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:03:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:46,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:46,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:46,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:47,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:47,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 02:03:47,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:03:47,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 741 [2020-10-27 02:03:47,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:47,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:03:47,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:03:47,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 02:03:47,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:47,598 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:03:47,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:03:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:47,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:47,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:47,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:47,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:47,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 02:03:47,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:47,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:47,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:03:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:47,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:47,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:47,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:47,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:47,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:03:47,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:47,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:47,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:03:47,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:47,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:03:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:47,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:47,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:47,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:47,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:47,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:03:47,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:47,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:47,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:47,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:03:47,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:47,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:03:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:47,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:47,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:47,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 02:03:47,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:47,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 02:03:47,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:47,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:03:47,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:47,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 02:03:47,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:47,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 02:03:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:47,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:47,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:47,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:03:47,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:47,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:03:47,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:47,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:47,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:47,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 02:03:47,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 02:03:47,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:03:47,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216995578] [2020-10-27 02:03:47,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:03:47,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 02:03:47,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130396394] [2020-10-27 02:03:47,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 02:03:47,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:03:47,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 02:03:47,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-27 02:03:47,827 INFO L87 Difference]: Start difference. First operand 788 states and 1042 transitions. Second operand 10 states. [2020-10-27 02:03:48,036 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:03:48,249 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:03:49,502 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-27 02:03:50,184 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 02:03:51,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:03:51,097 INFO L93 Difference]: Finished difference Result 840 states and 1103 transitions. [2020-10-27 02:03:51,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 02:03:51,102 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-10-27 02:03:51,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:03:51,109 INFO L225 Difference]: With dead ends: 840 [2020-10-27 02:03:51,109 INFO L226 Difference]: Without dead ends: 830 [2020-10-27 02:03:51,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-27 02:03:51,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-10-27 02:03:51,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 788. [2020-10-27 02:03:51,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 788 states. [2020-10-27 02:03:51,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1040 transitions. [2020-10-27 02:03:51,208 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1040 transitions. Word has length 43 [2020-10-27 02:03:51,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:03:51,208 INFO L481 AbstractCegarLoop]: Abstraction has 788 states and 1040 transitions. [2020-10-27 02:03:51,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 02:03:51,209 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1040 transitions. [2020-10-27 02:03:51,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 02:03:51,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:03:51,211 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] [2020-10-27 02:03:51,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 02:03:51,211 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:03:51,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:03:51,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1767124136, now seen corresponding path program 1 times [2020-10-27 02:03:51,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:03:51,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200699080] [2020-10-27 02:03:51,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:03:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:51,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:51,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:51,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:52,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:52,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 02:03:52,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:03:52,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 779 [2020-10-27 02:03:52,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:03:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:03:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 02:03:52,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:52,240 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:03:52,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:03:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:52,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:52,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:52,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:52,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:52,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 02:03:52,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:52,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:52,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:52,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:52,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:52,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:03:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:52,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:52,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:52,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:52,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:52,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 02:03:52,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:03:52,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:52,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:03:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:52,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:52,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:52,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:52,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:52,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:03:52,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:52,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:03:52,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:52,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:03:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:52,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:52,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:52,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 02:03:52,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:52,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 02:03:52,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:03:52,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:52,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 02:03:52,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:52,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 02:03:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:52,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:52,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:52,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:03:52,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:52,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:03:52,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:52,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:03:52,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:52,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 02:03:52,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 02:03:52,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:03:52,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200699080] [2020-10-27 02:03:52,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:03:52,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 02:03:52,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732433557] [2020-10-27 02:03:52,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 02:03:52,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:03:52,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 02:03:52,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-27 02:03:52,531 INFO L87 Difference]: Start difference. First operand 788 states and 1040 transitions. Second operand 10 states. [2020-10-27 02:03:52,693 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:03:52,901 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 02:03:54,245 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 113 [2020-10-27 02:03:55,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:03:55,668 INFO L93 Difference]: Finished difference Result 830 states and 1090 transitions. [2020-10-27 02:03:55,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 02:03:55,669 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-10-27 02:03:55,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:03:55,675 INFO L225 Difference]: With dead ends: 830 [2020-10-27 02:03:55,675 INFO L226 Difference]: Without dead ends: 820 [2020-10-27 02:03:55,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-27 02:03:55,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-10-27 02:03:55,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 788. [2020-10-27 02:03:55,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 788 states. [2020-10-27 02:03:55,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1038 transitions. [2020-10-27 02:03:55,774 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1038 transitions. Word has length 44 [2020-10-27 02:03:55,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:03:55,774 INFO L481 AbstractCegarLoop]: Abstraction has 788 states and 1038 transitions. [2020-10-27 02:03:55,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 02:03:55,775 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1038 transitions. [2020-10-27 02:03:55,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 02:03:55,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:03:55,776 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] [2020-10-27 02:03:55,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 02:03:55,777 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:03:55,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:03:55,777 INFO L82 PathProgramCache]: Analyzing trace with hash 655633270, now seen corresponding path program 1 times [2020-10-27 02:03:55,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:03:55,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096776677] [2020-10-27 02:03:55,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:03:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:55,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:55,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:55,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 02:03:55,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:55,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-27 02:03:55,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:55,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:03:55,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 02:03:55,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 02:03:55,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:56,201 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:03:56,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:03:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:56,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:56,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:56,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:56,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:56,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:03:56,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:56,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:56,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:56,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:56,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:56,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:03:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:56,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:56,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:56,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:56,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:56,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:03:56,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:56,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:56,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:03:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:56,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:56,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:56,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:03:56,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:56,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:03:56,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:56,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:56,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:03:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:56,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:56,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:56,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 02:03:56,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:56,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 02:03:56,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:56,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:03:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 02:03:56,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:56,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 02:03:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:56,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:56,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:03:56,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:03:56,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:03:56,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:03:56,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:03:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:03:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:03:56,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:03:56,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:03:56,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:03:56,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096776677] [2020-10-27 02:03:56,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:03:56,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 02:03:56,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346470780] [2020-10-27 02:03:56,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 02:03:56,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:03:56,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 02:03:56,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-27 02:03:56,406 INFO L87 Difference]: Start difference. First operand 788 states and 1038 transitions. Second operand 10 states. [2020-10-27 02:03:57,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:03:57,885 INFO L93 Difference]: Finished difference Result 832 states and 1090 transitions. [2020-10-27 02:03:57,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 02:03:57,888 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-27 02:03:57,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:03:57,893 INFO L225 Difference]: With dead ends: 832 [2020-10-27 02:03:57,893 INFO L226 Difference]: Without dead ends: 813 [2020-10-27 02:03:57,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-27 02:03:57,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2020-10-27 02:03:57,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 786. [2020-10-27 02:03:57,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 786 states. [2020-10-27 02:03:57,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1034 transitions. [2020-10-27 02:03:57,987 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1034 transitions. Word has length 45 [2020-10-27 02:03:57,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:03:57,987 INFO L481 AbstractCegarLoop]: Abstraction has 786 states and 1034 transitions. [2020-10-27 02:03:57,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 02:03:57,987 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1034 transitions. [2020-10-27 02:03:57,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 02:03:57,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:03:57,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:03:57,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 02:03:57,990 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:03:57,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:03:57,991 INFO L82 PathProgramCache]: Analyzing trace with hash 2145519263, now seen corresponding path program 1 times [2020-10-27 02:03:57,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:03:57,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067529150] [2020-10-27 02:03:57,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:03:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:03:58,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:58,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:58,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:03:58,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:01,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:01,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 02:04:01,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 02:04:01,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3078 [2020-10-27 02:04:01,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:01,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:04:01,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:04:01,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 02:04:01,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:01,307 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:01,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:01,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:01,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:01,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:01,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:01,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:04:01,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:01,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:01,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:01,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:01,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:01,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:01,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:01,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:01,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:01,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:01,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:04:01,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:04:01,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:01,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:01,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:01,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:01,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:01,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:01,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:04:01,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:01,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:01,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:01,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:04:01,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:01,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 02:04:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:01,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:01,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:01,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 02:04:01,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:01,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 02:04:01,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:01,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:04:01,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:01,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 02:04:01,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:01,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:01,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067529150] [2020-10-27 02:04:01,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:01,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 02:04:01,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912056340] [2020-10-27 02:04:01,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 02:04:01,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:01,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 02:04:01,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 02:04:01,478 INFO L87 Difference]: Start difference. First operand 786 states and 1034 transitions. Second operand 10 states. [2020-10-27 02:04:01,646 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:04:01,867 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 02:04:02,623 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 02:04:03,246 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 113 [2020-10-27 02:04:06,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:06,113 INFO L93 Difference]: Finished difference Result 1905 states and 2576 transitions. [2020-10-27 02:04:06,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 02:04:06,114 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-27 02:04:06,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:06,124 INFO L225 Difference]: With dead ends: 1905 [2020-10-27 02:04:06,124 INFO L226 Difference]: Without dead ends: 1391 [2020-10-27 02:04:06,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2020-10-27 02:04:06,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-10-27 02:04:06,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 966. [2020-10-27 02:04:06,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-10-27 02:04:06,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1280 transitions. [2020-10-27 02:04:06,282 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1280 transitions. Word has length 50 [2020-10-27 02:04:06,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:06,283 INFO L481 AbstractCegarLoop]: Abstraction has 966 states and 1280 transitions. [2020-10-27 02:04:06,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 02:04:06,283 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1280 transitions. [2020-10-27 02:04:06,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 02:04:06,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:06,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:04:06,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 02:04:06,285 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:06,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:06,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1859939481, now seen corresponding path program 1 times [2020-10-27 02:04:06,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:06,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140077291] [2020-10-27 02:04:06,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:06,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:06,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:06,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 02:04:06,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:06,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 02:04:06,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:06,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:06,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 02:04:06,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 02:04:06,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:06,583 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:06,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:06,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:06,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:06,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:06,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:06,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 02:04:06,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:06,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:06,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:06,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:06,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:06,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:06,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:06,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:06,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:06,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:06,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:04:06,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:06,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:06,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:06,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:06,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:06,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:06,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:06,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:06,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:06,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:06,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:06,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:06,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:06,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:06,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:06,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:06,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 02:04:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:06,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:06,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:06,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 02:04:06,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:06,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 02:04:06,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:06,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:06,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 02:04:06,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 02:04:06,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:06,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:06,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140077291] [2020-10-27 02:04:06,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:06,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 02:04:06,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325021456] [2020-10-27 02:04:06,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 02:04:06,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:06,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 02:04:06,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 02:04:06,738 INFO L87 Difference]: Start difference. First operand 966 states and 1280 transitions. Second operand 8 states. [2020-10-27 02:04:06,896 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:04:07,365 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:04:09,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:09,566 INFO L93 Difference]: Finished difference Result 1076 states and 1391 transitions. [2020-10-27 02:04:09,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 02:04:09,567 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-10-27 02:04:09,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:09,573 INFO L225 Difference]: With dead ends: 1076 [2020-10-27 02:04:09,573 INFO L226 Difference]: Without dead ends: 672 [2020-10-27 02:04:09,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-27 02:04:09,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2020-10-27 02:04:09,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 619. [2020-10-27 02:04:09,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2020-10-27 02:04:09,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 791 transitions. [2020-10-27 02:04:09,663 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 791 transitions. Word has length 51 [2020-10-27 02:04:09,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:09,665 INFO L481 AbstractCegarLoop]: Abstraction has 619 states and 791 transitions. [2020-10-27 02:04:09,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 02:04:09,665 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 791 transitions. [2020-10-27 02:04:09,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 02:04:09,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:09,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:04:09,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 02:04:09,668 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:09,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:09,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1165083475, now seen corresponding path program 1 times [2020-10-27 02:04:09,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:09,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447650074] [2020-10-27 02:04:09,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:09,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:09,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:09,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 02:04:09,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:09,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-27 02:04:09,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:09,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:09,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-27 02:04:09,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 02:04:09,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:10,113 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:10,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:10,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:10,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:10,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:10,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:10,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 02:04:10,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:10,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:10,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:10,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:10,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:10,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:10,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:10,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:10,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:10,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:10,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:04:10,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:10,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:10,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:10,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:10,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:10,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:10,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:10,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:10,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:10,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:10,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:10,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:10,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:10,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:10,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:10,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:10,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 02:04:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:10,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:10,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:10,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:04:10,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:10,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:04:10,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:10,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:10,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:10,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:10,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:10,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:04:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:10,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:10,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:10,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:10,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:10,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:04:10,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:10,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:10,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:10,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:10,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:10,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 02:04:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:10,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:10,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:10,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:10,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:10,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:10,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:10,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:10,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:10,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:04:10,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:10,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:10,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447650074] [2020-10-27 02:04:10,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:10,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 02:04:10,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285120880] [2020-10-27 02:04:10,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 02:04:10,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:10,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 02:04:10,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 02:04:10,266 INFO L87 Difference]: Start difference. First operand 619 states and 791 transitions. Second operand 8 states. [2020-10-27 02:04:10,412 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:04:11,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:11,797 INFO L93 Difference]: Finished difference Result 942 states and 1208 transitions. [2020-10-27 02:04:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 02:04:11,798 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-27 02:04:11,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:11,808 INFO L225 Difference]: With dead ends: 942 [2020-10-27 02:04:11,809 INFO L226 Difference]: Without dead ends: 660 [2020-10-27 02:04:11,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-27 02:04:11,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2020-10-27 02:04:11,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 633. [2020-10-27 02:04:11,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-10-27 02:04:11,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 811 transitions. [2020-10-27 02:04:11,897 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 811 transitions. Word has length 56 [2020-10-27 02:04:11,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:11,897 INFO L481 AbstractCegarLoop]: Abstraction has 633 states and 811 transitions. [2020-10-27 02:04:11,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 02:04:11,897 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 811 transitions. [2020-10-27 02:04:11,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 02:04:11,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:11,899 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] [2020-10-27 02:04:11,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 02:04:11,900 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:11,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:11,900 INFO L82 PathProgramCache]: Analyzing trace with hash 250320966, now seen corresponding path program 1 times [2020-10-27 02:04:11,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:11,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776322193] [2020-10-27 02:04:11,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:11,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:11,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:12,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:12,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:12,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:14,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:14,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 02:04:14,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 02:04:14,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2314 [2020-10-27 02:04:14,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:14,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:04:14,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:04:14,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 02:04:14,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:14,398 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:14,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:14,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:14,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:14,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:14,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:14,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 02:04:14,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:14,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:14,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:14,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:14,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:14,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:14,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:14,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:14,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:14,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:14,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:04:14,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:04:14,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:14,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:14,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:14,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:14,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:14,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:14,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:04:14,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:14,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:14,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:14,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:04:14,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:14,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:04:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:14,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:14,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:14,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 02:04:14,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:14,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 02:04:14,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:14,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:04:14,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 02:04:14,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 02:04:14,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:14,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 02:04:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:14,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:14,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:14,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 02:04:14,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:14,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 02:04:14,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:14,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:04:14,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 02:04:14,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 02:04:14,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:14,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776322193] [2020-10-27 02:04:14,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:14,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 02:04:14,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854017271] [2020-10-27 02:04:14,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 02:04:14,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:14,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 02:04:14,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-27 02:04:14,751 INFO L87 Difference]: Start difference. First operand 633 states and 811 transitions. Second operand 12 states. [2020-10-27 02:04:15,064 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 111 [2020-10-27 02:04:15,275 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:04:15,577 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 02:04:15,813 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 02:04:18,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:18,555 INFO L93 Difference]: Finished difference Result 817 states and 1045 transitions. [2020-10-27 02:04:18,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 02:04:18,556 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-27 02:04:18,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:18,560 INFO L225 Difference]: With dead ends: 817 [2020-10-27 02:04:18,561 INFO L226 Difference]: Without dead ends: 747 [2020-10-27 02:04:18,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2020-10-27 02:04:18,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2020-10-27 02:04:18,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 604. [2020-10-27 02:04:18,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2020-10-27 02:04:18,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 771 transitions. [2020-10-27 02:04:18,648 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 771 transitions. Word has length 54 [2020-10-27 02:04:18,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:18,648 INFO L481 AbstractCegarLoop]: Abstraction has 604 states and 771 transitions. [2020-10-27 02:04:18,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 02:04:18,648 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 771 transitions. [2020-10-27 02:04:18,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 02:04:18,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:18,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:04:18,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 02:04:18,650 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:18,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:18,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1915715928, now seen corresponding path program 1 times [2020-10-27 02:04:18,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:18,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900779560] [2020-10-27 02:04:18,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:18,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:18,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:18,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 02:04:18,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:18,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 02:04:18,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:18,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:18,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 02:04:18,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 02:04:18,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:18,938 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:18,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:18,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:18,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:18,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:18,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:18,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:04:18,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:18,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:18,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:18,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:18,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:18,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:19,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:19,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:19,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:19,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:04:19,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:19,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:19,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:19,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:19,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:19,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:19,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:19,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:19,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:19,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:19,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:04:19,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:19,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:19,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:19,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:19,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:19,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:04:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:19,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:19,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:19,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 02:04:19,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:19,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 02:04:19,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:19,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:19,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:19,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 02:04:19,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:19,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 02:04:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:19,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:19,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:19,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:04:19,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:19,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:04:19,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:19,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:19,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:19,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 02:04:19,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:19,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:19,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900779560] [2020-10-27 02:04:19,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:19,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 02:04:19,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358168535] [2020-10-27 02:04:19,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 02:04:19,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:19,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 02:04:19,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 02:04:19,152 INFO L87 Difference]: Start difference. First operand 604 states and 771 transitions. Second operand 8 states. [2020-10-27 02:04:19,329 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:04:20,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:20,647 INFO L93 Difference]: Finished difference Result 793 states and 1013 transitions. [2020-10-27 02:04:20,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 02:04:20,650 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-10-27 02:04:20,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:20,659 INFO L225 Difference]: With dead ends: 793 [2020-10-27 02:04:20,659 INFO L226 Difference]: Without dead ends: 773 [2020-10-27 02:04:20,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 02:04:20,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-10-27 02:04:20,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 679. [2020-10-27 02:04:20,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2020-10-27 02:04:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 868 transitions. [2020-10-27 02:04:20,766 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 868 transitions. Word has length 55 [2020-10-27 02:04:20,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:20,766 INFO L481 AbstractCegarLoop]: Abstraction has 679 states and 868 transitions. [2020-10-27 02:04:20,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 02:04:20,767 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 868 transitions. [2020-10-27 02:04:20,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 02:04:20,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:20,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:04:20,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 02:04:20,769 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:20,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:20,770 INFO L82 PathProgramCache]: Analyzing trace with hash -68264024, now seen corresponding path program 1 times [2020-10-27 02:04:20,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:20,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91048990] [2020-10-27 02:04:20,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:20,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:20,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:21,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:21,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 02:04:21,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:04:21,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-27 02:04:21,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:04:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:04:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 02:04:21,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:21,442 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:21,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:21,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:21,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:21,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:21,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:21,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 02:04:21,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:21,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:21,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:21,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:21,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:21,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:21,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:21,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:21,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:21,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:21,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:04:21,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:04:21,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:21,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:21,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:21,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:21,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:21,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:21,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:04:21,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:21,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:21,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:21,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:04:21,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:21,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:04:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:21,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:21,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:21,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:21,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 02:04:21,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:04:21,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 02:04:21,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:21,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:04:21,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 02:04:21,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 02:04:21,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:21,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 02:04:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:21,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:21,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:21,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:21,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:04:21,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:04:21,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 02:04:21,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:04:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 02:04:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 02:04:21,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:21,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91048990] [2020-10-27 02:04:21,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:21,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 02:04:21,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433883788] [2020-10-27 02:04:21,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 02:04:21,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:21,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 02:04:21,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-27 02:04:21,840 INFO L87 Difference]: Start difference. First operand 679 states and 868 transitions. Second operand 13 states. [2020-10-27 02:04:22,229 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 111 [2020-10-27 02:04:22,514 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 02:04:23,018 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 02:04:25,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:25,312 INFO L93 Difference]: Finished difference Result 731 states and 929 transitions. [2020-10-27 02:04:25,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 02:04:25,313 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-10-27 02:04:25,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:25,316 INFO L225 Difference]: With dead ends: 731 [2020-10-27 02:04:25,317 INFO L226 Difference]: Without dead ends: 642 [2020-10-27 02:04:25,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-27 02:04:25,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-10-27 02:04:25,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 605. [2020-10-27 02:04:25,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-10-27 02:04:25,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 770 transitions. [2020-10-27 02:04:25,406 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 770 transitions. Word has length 55 [2020-10-27 02:04:25,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:25,407 INFO L481 AbstractCegarLoop]: Abstraction has 605 states and 770 transitions. [2020-10-27 02:04:25,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 02:04:25,407 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 770 transitions. [2020-10-27 02:04:25,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 02:04:25,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:25,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:04:25,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 02:04:25,409 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:25,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:25,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1915396886, now seen corresponding path program 1 times [2020-10-27 02:04:25,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:25,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760277103] [2020-10-27 02:04:25,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:25,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:25,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:25,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 02:04:25,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:25,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-27 02:04:25,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:25,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:04:25,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-27 02:04:25,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:04:25,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:25,816 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:25,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:25,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:25,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:25,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:25,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:25,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:04:25,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:25,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:25,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:25,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:25,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:25,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:25,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:25,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:25,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:25,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:25,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:04:25,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:25,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:25,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:25,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:25,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:25,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:25,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:25,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:25,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:25,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:25,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:04:25,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:25,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:25,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:25,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:25,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:25,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 02:04:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:25,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:25,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:25,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 02:04:25,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:25,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 02:04:25,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:25,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:04:25,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 02:04:25,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:04:25,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:26,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:04:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:26,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:26,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:26,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:04:26,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:26,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 02:04:26,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:04:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 02:04:26,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:26,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:04:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:26,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:26,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:26,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:26,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:26,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:04:26,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:26,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:26,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:26,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:26,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:26,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:26,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760277103] [2020-10-27 02:04:26,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:26,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 02:04:26,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602400962] [2020-10-27 02:04:26,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 02:04:26,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:26,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 02:04:26,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-27 02:04:26,117 INFO L87 Difference]: Start difference. First operand 605 states and 770 transitions. Second operand 10 states. [2020-10-27 02:04:27,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:27,886 INFO L93 Difference]: Finished difference Result 916 states and 1171 transitions. [2020-10-27 02:04:27,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 02:04:27,887 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-10-27 02:04:27,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:27,890 INFO L225 Difference]: With dead ends: 916 [2020-10-27 02:04:27,891 INFO L226 Difference]: Without dead ends: 572 [2020-10-27 02:04:27,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-27 02:04:27,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-10-27 02:04:27,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 540. [2020-10-27 02:04:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2020-10-27 02:04:27,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 678 transitions. [2020-10-27 02:04:27,979 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 678 transitions. Word has length 62 [2020-10-27 02:04:27,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:27,979 INFO L481 AbstractCegarLoop]: Abstraction has 540 states and 678 transitions. [2020-10-27 02:04:27,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 02:04:27,980 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 678 transitions. [2020-10-27 02:04:27,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 02:04:27,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:27,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:04:27,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 02:04:27,981 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:27,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:27,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1895080171, now seen corresponding path program 1 times [2020-10-27 02:04:27,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:27,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953705160] [2020-10-27 02:04:27,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:28,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:28,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:28,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:29,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:29,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 02:04:29,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:04:29,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1031 [2020-10-27 02:04:29,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:29,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:04:29,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:04:29,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 02:04:29,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:29,249 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:29,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:29,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:29,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:29,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:29,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:29,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:04:29,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:29,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:29,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:29,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:29,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:29,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:29,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:29,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:29,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:29,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:04:29,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:29,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:29,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:29,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:04:29,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:29,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:29,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:29,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:29,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:29,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:29,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:04:29,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:29,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:29,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:29,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:04:29,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:29,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:04:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:29,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:29,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:29,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 02:04:29,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:29,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 02:04:29,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:29,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:29,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:29,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 02:04:29,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:29,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 02:04:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:29,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:29,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:29,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:04:29,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:29,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:04:29,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:29,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:29,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:29,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:29,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:29,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:29,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953705160] [2020-10-27 02:04:29,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:29,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 02:04:29,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146653672] [2020-10-27 02:04:29,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 02:04:29,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:29,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 02:04:29,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 02:04:29,499 INFO L87 Difference]: Start difference. First operand 540 states and 678 transitions. Second operand 9 states. [2020-10-27 02:04:29,666 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 02:04:30,824 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 02:04:31,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:31,389 INFO L93 Difference]: Finished difference Result 577 states and 720 transitions. [2020-10-27 02:04:31,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 02:04:31,390 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-27 02:04:31,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:31,395 INFO L225 Difference]: With dead ends: 577 [2020-10-27 02:04:31,395 INFO L226 Difference]: Without dead ends: 572 [2020-10-27 02:04:31,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-27 02:04:31,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-10-27 02:04:31,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 540. [2020-10-27 02:04:31,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2020-10-27 02:04:31,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 677 transitions. [2020-10-27 02:04:31,483 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 677 transitions. Word has length 56 [2020-10-27 02:04:31,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:31,483 INFO L481 AbstractCegarLoop]: Abstraction has 540 states and 677 transitions. [2020-10-27 02:04:31,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 02:04:31,483 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 677 transitions. [2020-10-27 02:04:31,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 02:04:31,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:31,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:04:31,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 02:04:31,485 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:31,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:31,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1903661901, now seen corresponding path program 1 times [2020-10-27 02:04:31,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:31,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877895033] [2020-10-27 02:04:31,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:31,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:31,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:31,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 02:04:31,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:31,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-27 02:04:31,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:31,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:04:31,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 02:04:31,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 02:04:31,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:31,931 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:31,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:31,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:31,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:31,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:31,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:31,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:04:31,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:31,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:31,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:31,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:31,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:31,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:31,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:31,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:31,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:04:31,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:31,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:31,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:31,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:31,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:32,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:32,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:32,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:32,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:32,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:32,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:04:32,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:32,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:32,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:32,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:32,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:32,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:04:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:32,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:32,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:32,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 02:04:32,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:32,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 02:04:32,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:32,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:04:32,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:32,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 02:04:32,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 02:04:32,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-27 02:04:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:32,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:32,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:32,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:04:32,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:32,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 02:04:32,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:04:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:32,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 02:04:32,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:32,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877895033] [2020-10-27 02:04:32,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:32,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 02:04:32,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484934912] [2020-10-27 02:04:32,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 02:04:32,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:32,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 02:04:32,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-27 02:04:32,251 INFO L87 Difference]: Start difference. First operand 540 states and 677 transitions. Second operand 13 states. [2020-10-27 02:04:34,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:34,602 INFO L93 Difference]: Finished difference Result 582 states and 725 transitions. [2020-10-27 02:04:34,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 02:04:34,603 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 56 [2020-10-27 02:04:34,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:34,607 INFO L225 Difference]: With dead ends: 582 [2020-10-27 02:04:34,607 INFO L226 Difference]: Without dead ends: 563 [2020-10-27 02:04:34,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-27 02:04:34,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-10-27 02:04:34,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 536. [2020-10-27 02:04:34,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-27 02:04:34,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 671 transitions. [2020-10-27 02:04:34,692 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 671 transitions. Word has length 56 [2020-10-27 02:04:34,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:34,692 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 671 transitions. [2020-10-27 02:04:34,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 02:04:34,692 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 671 transitions. [2020-10-27 02:04:34,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 02:04:34,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:34,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:04:34,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 02:04:34,694 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:34,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:34,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1006046909, now seen corresponding path program 1 times [2020-10-27 02:04:34,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:34,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292923565] [2020-10-27 02:04:34,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:34,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:34,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:34,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 02:04:34,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:34,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-27 02:04:34,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:34,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:04:34,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 02:04:34,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 02:04:34,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:35,068 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:35,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:35,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:35,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:35,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:35,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:35,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:04:35,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:35,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:35,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:35,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:35,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:35,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:35,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:35,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:35,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:35,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:35,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:04:35,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:35,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:35,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:35,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:35,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:35,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:35,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:35,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:35,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:35,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:35,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:35,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:35,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:35,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:35,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:35,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:35,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:04:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:35,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:35,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:35,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 02:04:35,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:35,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 02:04:35,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:35,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:04:35,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:35,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 02:04:35,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:35,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 02:04:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:35,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:35,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:35,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:04:35,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:35,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:04:35,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:35,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:35,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:35,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:35,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:35,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 02:04:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:35,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:35,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:35,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:04:35,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:35,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:35,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:35,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:35,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:35,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:04:35,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:35,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:35,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292923565] [2020-10-27 02:04:35,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:35,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 02:04:35,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20599315] [2020-10-27 02:04:35,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 02:04:35,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:35,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 02:04:35,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-27 02:04:35,394 INFO L87 Difference]: Start difference. First operand 536 states and 671 transitions. Second operand 12 states. [2020-10-27 02:04:37,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:37,411 INFO L93 Difference]: Finished difference Result 585 states and 727 transitions. [2020-10-27 02:04:37,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 02:04:37,412 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2020-10-27 02:04:37,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:37,416 INFO L225 Difference]: With dead ends: 585 [2020-10-27 02:04:37,416 INFO L226 Difference]: Without dead ends: 560 [2020-10-27 02:04:37,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-27 02:04:37,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-10-27 02:04:37,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 531. [2020-10-27 02:04:37,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-10-27 02:04:37,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 664 transitions. [2020-10-27 02:04:37,502 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 664 transitions. Word has length 58 [2020-10-27 02:04:37,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:37,502 INFO L481 AbstractCegarLoop]: Abstraction has 531 states and 664 transitions. [2020-10-27 02:04:37,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 02:04:37,503 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 664 transitions. [2020-10-27 02:04:37,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 02:04:37,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:37,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:04:37,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 02:04:37,505 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:37,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:37,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1738544669, now seen corresponding path program 1 times [2020-10-27 02:04:37,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:37,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851576763] [2020-10-27 02:04:37,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:37,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:37,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:37,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 02:04:37,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:37,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 02:04:37,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:37,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:04:37,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:04:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 02:04:37,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:37,858 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:37,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:37,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:37,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:37,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:37,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:37,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 02:04:37,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:37,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:37,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:37,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:37,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:37,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:37,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:37,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:37,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:37,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:37,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:04:37,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:37,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:37,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:37,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:04:37,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:37,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:37,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:37,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:37,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:37,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:37,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:04:37,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:04:37,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:38,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 02:04:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:38,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:38,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:38,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 02:04:38,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:38,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 02:04:38,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:38,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:04:38,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 02:04:38,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 02:04:38,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:38,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:04:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:38,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:38,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:38,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:04:38,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:38,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:04:38,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:38,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:38,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:38,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:38,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:38,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:04:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:38,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:38,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:38,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:38,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:38,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:04:38,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:38,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:38,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:38,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:38,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:38,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:04:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:38,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:38,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:38,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:38,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:38,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:38,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:38,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:38,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:38,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:04:38,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:38,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:38,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851576763] [2020-10-27 02:04:38,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:38,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 02:04:38,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132397361] [2020-10-27 02:04:38,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 02:04:38,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:38,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 02:04:38,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-27 02:04:38,149 INFO L87 Difference]: Start difference. First operand 531 states and 664 transitions. Second operand 13 states. [2020-10-27 02:04:38,338 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 02:04:38,545 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 02:04:40,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:40,861 INFO L93 Difference]: Finished difference Result 815 states and 1017 transitions. [2020-10-27 02:04:40,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 02:04:40,862 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-27 02:04:40,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:40,865 INFO L225 Difference]: With dead ends: 815 [2020-10-27 02:04:40,865 INFO L226 Difference]: Without dead ends: 536 [2020-10-27 02:04:40,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2020-10-27 02:04:40,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2020-10-27 02:04:40,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 503. [2020-10-27 02:04:40,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-10-27 02:04:40,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 619 transitions. [2020-10-27 02:04:40,953 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 619 transitions. Word has length 66 [2020-10-27 02:04:40,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:40,954 INFO L481 AbstractCegarLoop]: Abstraction has 503 states and 619 transitions. [2020-10-27 02:04:40,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 02:04:40,954 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 619 transitions. [2020-10-27 02:04:40,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 02:04:40,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:40,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:04:40,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 02:04:40,956 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:40,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:40,956 INFO L82 PathProgramCache]: Analyzing trace with hash -120187197, now seen corresponding path program 1 times [2020-10-27 02:04:40,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:40,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669895150] [2020-10-27 02:04:40,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:41,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:41,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:41,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:41,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:41,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:41,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:41,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 02:04:41,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 02:04:41,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 758 [2020-10-27 02:04:41,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:41,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:41,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 02:04:41,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 02:04:41,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:41,904 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:41,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:41,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:41,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:41,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:41,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:41,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:04:41,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:41,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:41,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:41,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:41,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:41,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:41,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:41,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:41,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:41,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:41,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:41,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:41,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:41,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:41,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:41,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:41,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:41,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:41,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:41,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:41,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:41,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:04:41,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:41,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:41,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:41,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:42,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:04:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:42,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:42,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:42,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:42,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 02:04:42,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:04:42,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 02:04:42,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:42,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:42,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:42,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 02:04:42,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:42,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 02:04:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:42,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:42,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:42,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 02:04:42,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:42,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 02:04:42,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:42,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:04:42,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:42,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:04:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:42,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:42,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:42,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:04:42,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:42,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:42,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:42,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:42,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:42,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:04:42,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:42,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:42,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669895150] [2020-10-27 02:04:42,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:42,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 02:04:42,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148413689] [2020-10-27 02:04:42,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 02:04:42,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:42,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 02:04:42,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-27 02:04:42,219 INFO L87 Difference]: Start difference. First operand 503 states and 619 transitions. Second operand 9 states. [2020-10-27 02:04:42,774 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:04:43,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:43,910 INFO L93 Difference]: Finished difference Result 555 states and 679 transitions. [2020-10-27 02:04:43,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 02:04:43,914 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-27 02:04:43,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:43,917 INFO L225 Difference]: With dead ends: 555 [2020-10-27 02:04:43,917 INFO L226 Difference]: Without dead ends: 533 [2020-10-27 02:04:43,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-27 02:04:43,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2020-10-27 02:04:43,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 502. [2020-10-27 02:04:43,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2020-10-27 02:04:44,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 613 transitions. [2020-10-27 02:04:44,001 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 613 transitions. Word has length 60 [2020-10-27 02:04:44,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:44,002 INFO L481 AbstractCegarLoop]: Abstraction has 502 states and 613 transitions. [2020-10-27 02:04:44,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 02:04:44,018 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 613 transitions. [2020-10-27 02:04:44,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 02:04:44,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:44,020 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] [2020-10-27 02:04:44,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 02:04:44,020 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:44,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:44,021 INFO L82 PathProgramCache]: Analyzing trace with hash -722707512, now seen corresponding path program 1 times [2020-10-27 02:04:44,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:44,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981714194] [2020-10-27 02:04:44,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:44,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:44,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:44,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:44,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 02:04:44,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:04:44,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-27 02:04:44,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:44,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:44,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 02:04:44,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 02:04:44,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:44,533 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:44,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:44,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:44,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:44,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:44,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:44,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:04:44,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:44,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:44,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:44,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:44,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:44,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:44,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:44,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:44,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:44,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:44,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:44,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:44,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:44,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:44,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:44,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:44,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:44,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:44,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:04:44,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:44,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:44,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:44,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:44,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:44,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 02:04:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:44,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:44,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:44,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 02:04:44,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:44,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 02:04:44,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:44,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:04:44,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 02:04:44,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 02:04:44,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:44,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:04:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:44,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:44,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:44,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:04:44,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:44,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:04:44,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:44,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:44,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:44,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:44,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:44,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:04:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:44,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:44,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:44,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:44,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:44,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:04:44,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:44,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:44,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:44,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:04:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:44,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:44,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:44,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:44,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:44,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:04:44,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:44,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:44,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:44,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981714194] [2020-10-27 02:04:44,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:44,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 02:04:44,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573350587] [2020-10-27 02:04:44,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 02:04:44,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:44,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 02:04:44,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-27 02:04:44,722 INFO L87 Difference]: Start difference. First operand 502 states and 613 transitions. Second operand 9 states. [2020-10-27 02:04:45,251 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 02:04:46,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:46,565 INFO L93 Difference]: Finished difference Result 810 states and 1007 transitions. [2020-10-27 02:04:46,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 02:04:46,566 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-27 02:04:46,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:46,570 INFO L225 Difference]: With dead ends: 810 [2020-10-27 02:04:46,570 INFO L226 Difference]: Without dead ends: 553 [2020-10-27 02:04:46,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-10-27 02:04:46,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-10-27 02:04:46,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 505. [2020-10-27 02:04:46,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2020-10-27 02:04:46,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 616 transitions. [2020-10-27 02:04:46,650 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 616 transitions. Word has length 68 [2020-10-27 02:04:46,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:46,650 INFO L481 AbstractCegarLoop]: Abstraction has 505 states and 616 transitions. [2020-10-27 02:04:46,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 02:04:46,651 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 616 transitions. [2020-10-27 02:04:46,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 02:04:46,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:46,652 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:04:46,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 02:04:46,653 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:46,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:46,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1949206975, now seen corresponding path program 1 times [2020-10-27 02:04:46,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:46,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780702634] [2020-10-27 02:04:46,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:46,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:46,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:46,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 02:04:46,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:46,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-27 02:04:46,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:46,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:04:46,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 02:04:46,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:04:46,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:46,984 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:46,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:46,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:46,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:46,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:46,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:46,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:04:46,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:46,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:46,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:46,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:46,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:47,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:47,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:47,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:47,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:47,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:47,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:04:47,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:47,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:47,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:47,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:47,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:47,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:47,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:47,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:04:47,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:47,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:47,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:04:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:47,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:47,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:47,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 02:04:47,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:47,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 02:04:47,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:04:47,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 02:04:47,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:04:47,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:47,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 02:04:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:47,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:47,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:47,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 02:04:47,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:47,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 02:04:47,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:04:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 02:04:47,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:47,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:04:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:47,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:47,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:47,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:04:47,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:47,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:04:47,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:47,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:47,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 02:04:47,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:47,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:47,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:47,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780702634] [2020-10-27 02:04:47,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:47,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 02:04:47,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814645012] [2020-10-27 02:04:47,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 02:04:47,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:47,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 02:04:47,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-27 02:04:47,266 INFO L87 Difference]: Start difference. First operand 505 states and 616 transitions. Second operand 11 states. [2020-10-27 02:04:49,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:49,058 INFO L93 Difference]: Finished difference Result 543 states and 661 transitions. [2020-10-27 02:04:49,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 02:04:49,059 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2020-10-27 02:04:49,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:49,064 INFO L225 Difference]: With dead ends: 543 [2020-10-27 02:04:49,064 INFO L226 Difference]: Without dead ends: 517 [2020-10-27 02:04:49,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-27 02:04:49,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2020-10-27 02:04:49,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 485. [2020-10-27 02:04:49,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2020-10-27 02:04:49,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 594 transitions. [2020-10-27 02:04:49,140 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 594 transitions. Word has length 62 [2020-10-27 02:04:49,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:49,141 INFO L481 AbstractCegarLoop]: Abstraction has 485 states and 594 transitions. [2020-10-27 02:04:49,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 02:04:49,141 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 594 transitions. [2020-10-27 02:04:49,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 02:04:49,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:49,142 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] [2020-10-27 02:04:49,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 02:04:49,143 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:49,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:49,143 INFO L82 PathProgramCache]: Analyzing trace with hash -743922272, now seen corresponding path program 1 times [2020-10-27 02:04:49,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:49,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352115877] [2020-10-27 02:04:49,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:49,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:49,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:49,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 02:04:49,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:49,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-27 02:04:49,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:49,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 02:04:49,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 02:04:49,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 02:04:49,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:49,611 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:49,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:49,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:49,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:49,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:49,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:49,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:04:49,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:49,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:49,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:49,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:49,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:49,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:49,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:49,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:49,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:49,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:49,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:49,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:49,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:49,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:49,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:49,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:49,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:49,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:49,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:49,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:49,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:49,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:04:49,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:49,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:49,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:49,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:49,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:49,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:04:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:49,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:49,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:49,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 02:04:49,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:49,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 02:04:49,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:49,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:04:49,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:49,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 02:04:49,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:49,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:49,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:49,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:49,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:04:49,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:49,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 02:04:49,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:04:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 02:04:49,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:49,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:49,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352115877] [2020-10-27 02:04:49,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:49,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 02:04:49,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550911155] [2020-10-27 02:04:49,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 02:04:49,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:49,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 02:04:49,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-27 02:04:49,939 INFO L87 Difference]: Start difference. First operand 485 states and 594 transitions. Second operand 14 states. [2020-10-27 02:04:52,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:52,783 INFO L93 Difference]: Finished difference Result 530 states and 646 transitions. [2020-10-27 02:04:52,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 02:04:52,784 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2020-10-27 02:04:52,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:52,787 INFO L225 Difference]: With dead ends: 530 [2020-10-27 02:04:52,787 INFO L226 Difference]: Without dead ends: 508 [2020-10-27 02:04:52,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-27 02:04:52,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-10-27 02:04:52,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 481. [2020-10-27 02:04:52,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2020-10-27 02:04:52,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 588 transitions. [2020-10-27 02:04:52,868 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 588 transitions. Word has length 61 [2020-10-27 02:04:52,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:52,869 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 588 transitions. [2020-10-27 02:04:52,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 02:04:52,869 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 588 transitions. [2020-10-27 02:04:52,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 02:04:52,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:52,871 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] [2020-10-27 02:04:52,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 02:04:52,871 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:52,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:52,872 INFO L82 PathProgramCache]: Analyzing trace with hash 2118175763, now seen corresponding path program 1 times [2020-10-27 02:04:52,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:52,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875893059] [2020-10-27 02:04:52,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:52,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:52,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:53,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:53,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 02:04:53,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:04:53,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-27 02:04:53,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:04:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 02:04:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 02:04:53,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:53,420 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:53,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:53,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:53,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:53,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:53,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:53,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 02:04:53,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:53,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:53,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:53,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:53,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:53,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:53,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:53,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:53,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:53,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:53,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 02:04:53,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:53,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:53,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:53,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:53,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:53,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:53,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:53,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:53,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:53,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:53,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:53,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:53,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:53,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:53,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:53,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 02:04:53,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 02:04:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:53,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:53,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:53,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:53,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 02:04:53,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:04:53,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 02:04:53,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:53,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:04:53,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:53,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 02:04:53,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:53,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:04:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:53,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:53,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:53,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:04:53,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:53,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:53,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:53,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:53,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:53,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:53,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:53,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:04:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:53,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:53,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:53,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:53,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:53,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:04:53,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:53,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:53,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:53,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:53,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:53,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:04:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:53,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:53,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:53,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:53,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:53,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:04:53,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:53,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:53,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:53,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:53,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:53,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:53,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875893059] [2020-10-27 02:04:53,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:53,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 02:04:53,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000107378] [2020-10-27 02:04:53,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 02:04:53,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:53,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 02:04:53,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-27 02:04:53,812 INFO L87 Difference]: Start difference. First operand 481 states and 588 transitions. Second operand 12 states. [2020-10-27 02:04:54,505 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 02:04:55,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:55,597 INFO L93 Difference]: Finished difference Result 760 states and 938 transitions. [2020-10-27 02:04:55,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 02:04:55,598 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-10-27 02:04:55,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:55,601 INFO L225 Difference]: With dead ends: 760 [2020-10-27 02:04:55,601 INFO L226 Difference]: Without dead ends: 533 [2020-10-27 02:04:55,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-27 02:04:55,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2020-10-27 02:04:55,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 481. [2020-10-27 02:04:55,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2020-10-27 02:04:55,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 586 transitions. [2020-10-27 02:04:55,680 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 586 transitions. Word has length 69 [2020-10-27 02:04:55,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:55,681 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 586 transitions. [2020-10-27 02:04:55,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 02:04:55,681 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 586 transitions. [2020-10-27 02:04:55,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 02:04:55,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:55,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:04:55,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 02:04:55,684 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:55,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:55,685 INFO L82 PathProgramCache]: Analyzing trace with hash 997487859, now seen corresponding path program 1 times [2020-10-27 02:04:55,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:55,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221885277] [2020-10-27 02:04:55,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:55,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:55,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:55,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 02:04:55,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:55,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-27 02:04:55,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:55,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 02:04:55,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 02:04:55,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 02:04:55,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:56,114 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:56,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:56,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:56,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:56,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:56,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:56,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 02:04:56,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:56,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:56,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:56,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:56,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:56,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:56,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:56,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:56,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:56,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:56,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:04:56,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:56,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:56,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:56,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:56,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:56,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:56,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:56,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:04:56,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:56,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:56,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:56,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:56,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:56,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:04:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:56,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:56,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:56,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 02:04:56,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:56,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 02:04:56,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:56,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:04:56,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:56,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 02:04:56,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:56,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:04:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:56,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:56,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:56,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:04:56,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:56,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 02:04:56,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:56,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:04:56,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:56,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 02:04:56,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:56,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:56,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221885277] [2020-10-27 02:04:56,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:56,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 02:04:56,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652266532] [2020-10-27 02:04:56,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 02:04:56,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:56,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 02:04:56,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-27 02:04:56,443 INFO L87 Difference]: Start difference. First operand 481 states and 586 transitions. Second operand 14 states. [2020-10-27 02:04:59,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:04:59,046 INFO L93 Difference]: Finished difference Result 526 states and 638 transitions. [2020-10-27 02:04:59,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 02:04:59,047 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-10-27 02:04:59,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:04:59,051 INFO L225 Difference]: With dead ends: 526 [2020-10-27 02:04:59,051 INFO L226 Difference]: Without dead ends: 503 [2020-10-27 02:04:59,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-27 02:04:59,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-10-27 02:04:59,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 476. [2020-10-27 02:04:59,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-27 02:04:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 579 transitions. [2020-10-27 02:04:59,128 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 579 transitions. Word has length 62 [2020-10-27 02:04:59,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:04:59,128 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 579 transitions. [2020-10-27 02:04:59,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 02:04:59,128 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 579 transitions. [2020-10-27 02:04:59,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 02:04:59,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:04:59,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:04:59,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 02:04:59,130 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:04:59,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:04:59,131 INFO L82 PathProgramCache]: Analyzing trace with hash -2066163935, now seen corresponding path program 1 times [2020-10-27 02:04:59,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:04:59,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607161307] [2020-10-27 02:04:59,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:04:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:59,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:59,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:59,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 02:04:59,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:59,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-27 02:04:59,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:59,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 02:04:59,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-27 02:04:59,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 02:04:59,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:59,572 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:04:59,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:04:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:59,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:59,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:59,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:59,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:59,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:04:59,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:59,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:59,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:59,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:59,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:59,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:04:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:59,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:59,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:59,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:59,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:59,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:04:59,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:59,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:59,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:04:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:59,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:59,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:59,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:04:59,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:59,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:04:59,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:59,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:04:59,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:59,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:04:59,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:59,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:04:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:59,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:59,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:59,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 02:04:59,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:59,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 02:04:59,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:59,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:04:59,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:59,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 02:04:59,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:59,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:04:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:04:59,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:04:59,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:04:59,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:04:59,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:04:59,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:04:59,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:04:59,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:04:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:04:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 02:04:59,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:04:59,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:04:59,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607161307] [2020-10-27 02:04:59,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:04:59,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 02:04:59,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880281956] [2020-10-27 02:04:59,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 02:04:59,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:04:59,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 02:04:59,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-27 02:04:59,874 INFO L87 Difference]: Start difference. First operand 476 states and 579 transitions. Second operand 14 states. [2020-10-27 02:05:02,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:02,469 INFO L93 Difference]: Finished difference Result 521 states and 631 transitions. [2020-10-27 02:05:02,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 02:05:02,469 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-10-27 02:05:02,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:02,472 INFO L225 Difference]: With dead ends: 521 [2020-10-27 02:05:02,473 INFO L226 Difference]: Without dead ends: 499 [2020-10-27 02:05:02,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-27 02:05:02,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-10-27 02:05:02,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 472. [2020-10-27 02:05:02,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-10-27 02:05:02,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 573 transitions. [2020-10-27 02:05:02,524 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 573 transitions. Word has length 62 [2020-10-27 02:05:02,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:02,525 INFO L481 AbstractCegarLoop]: Abstraction has 472 states and 573 transitions. [2020-10-27 02:05:02,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 02:05:02,525 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 573 transitions. [2020-10-27 02:05:02,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 02:05:02,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:02,526 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] [2020-10-27 02:05:02,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 02:05:02,527 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:02,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:02,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1068088035, now seen corresponding path program 1 times [2020-10-27 02:05:02,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:02,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946434640] [2020-10-27 02:05:02,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:02,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:02,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:02,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 02:05:02,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:02,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 02:05:02,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:02,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:02,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 02:05:02,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 02:05:02,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:02,874 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:05:02,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:02,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:02,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:02,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:02,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:02,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 02:05:02,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:02,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:02,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:02,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:02,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:02,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:02,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:02,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:02,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:02,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:02,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:02,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:02,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:02,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:02,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:02,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:02,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:02,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:02,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:02,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:02,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:02,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:02,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:02,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:02,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:02,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:02,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:02,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 02:05:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:02,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:03,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:03,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 02:05:03,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:03,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 02:05:03,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:03,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 02:05:03,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:03,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:05:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:03,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:03,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:03,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:05:03,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:03,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:05:03,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:03,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:03,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:03,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:05:03,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:03,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:05:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:03,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:03,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:03,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:03,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:03,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:03,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:05:03,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:03,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:05:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:03,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:03,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:03,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:03,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:03,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:03,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:05:03,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:05:03,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946434640] [2020-10-27 02:05:03,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:03,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 02:05:03,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8621204] [2020-10-27 02:05:03,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 02:05:03,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:03,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 02:05:03,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-27 02:05:03,075 INFO L87 Difference]: Start difference. First operand 472 states and 573 transitions. Second operand 9 states. [2020-10-27 02:05:03,807 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:05:04,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:04,917 INFO L93 Difference]: Finished difference Result 898 states and 1102 transitions. [2020-10-27 02:05:04,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 02:05:04,917 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-27 02:05:04,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:04,921 INFO L225 Difference]: With dead ends: 898 [2020-10-27 02:05:04,921 INFO L226 Difference]: Without dead ends: 644 [2020-10-27 02:05:04,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-10-27 02:05:04,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2020-10-27 02:05:05,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 593. [2020-10-27 02:05:05,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-10-27 02:05:05,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 721 transitions. [2020-10-27 02:05:05,020 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 721 transitions. Word has length 71 [2020-10-27 02:05:05,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:05,020 INFO L481 AbstractCegarLoop]: Abstraction has 593 states and 721 transitions. [2020-10-27 02:05:05,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 02:05:05,021 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 721 transitions. [2020-10-27 02:05:05,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 02:05:05,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:05,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 02:05:05,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 02:05:05,023 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:05,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:05,023 INFO L82 PathProgramCache]: Analyzing trace with hash -955631470, now seen corresponding path program 1 times [2020-10-27 02:05:05,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:05,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140598422] [2020-10-27 02:05:05,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:05,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:05,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:05,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 02:05:05,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:05,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-27 02:05:05,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:05,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 02:05:05,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 02:05:05,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 02:05:05,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:05,434 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:05:05,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:05,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:05,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:05,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:05,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:05,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:05:05,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:05,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:05,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:05,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:05,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:05,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:05,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:05,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:05,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:05,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:05,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:05,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:05,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:05,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:05,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:05,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:05,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:05,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:05,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:05,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:05,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:05,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:05,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:05,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:05,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:05,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:05,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:05,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:05:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:05,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:05,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:05,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 02:05:05,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:05,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 02:05:05,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:05,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:05:05,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:05,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 02:05:05,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:05,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 02:05:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:05,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:05,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:05,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:05:05,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:05,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 02:05:05,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:05,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:05,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:05,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 02:05:05,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:05:05,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140598422] [2020-10-27 02:05:05,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:05,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 02:05:05,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000665514] [2020-10-27 02:05:05,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 02:05:05,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:05,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 02:05:05,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-27 02:05:05,780 INFO L87 Difference]: Start difference. First operand 593 states and 721 transitions. Second operand 14 states. [2020-10-27 02:05:08,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:08,353 INFO L93 Difference]: Finished difference Result 638 states and 774 transitions. [2020-10-27 02:05:08,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 02:05:08,354 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-10-27 02:05:08,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:08,357 INFO L225 Difference]: With dead ends: 638 [2020-10-27 02:05:08,357 INFO L226 Difference]: Without dead ends: 594 [2020-10-27 02:05:08,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-27 02:05:08,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2020-10-27 02:05:08,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 567. [2020-10-27 02:05:08,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-10-27 02:05:08,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 689 transitions. [2020-10-27 02:05:08,462 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 689 transitions. Word has length 66 [2020-10-27 02:05:08,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:08,463 INFO L481 AbstractCegarLoop]: Abstraction has 567 states and 689 transitions. [2020-10-27 02:05:08,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 02:05:08,463 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 689 transitions. [2020-10-27 02:05:08,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 02:05:08,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:08,465 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] [2020-10-27 02:05:08,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 02:05:08,465 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:08,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:08,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1972076870, now seen corresponding path program 1 times [2020-10-27 02:05:08,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:08,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686222806] [2020-10-27 02:05:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:08,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:08,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:08,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:08,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 02:05:08,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:05:08,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-27 02:05:08,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:08,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:08,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 02:05:08,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 02:05:08,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:09,029 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:05:09,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:09,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:09,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:09,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:09,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:09,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:05:09,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:09,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:09,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:09,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:09,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:09,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:09,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:09,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:09,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:09,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:09,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:09,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:09,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:09,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:09,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:09,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:09,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:09,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:09,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:09,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:09,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:09,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:09,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:09,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:09,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:09,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:09,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 02:05:09,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 02:05:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:09,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:09,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:09,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 02:05:09,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:09,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 02:05:09,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:09,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:09,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:09,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 02:05:09,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:09,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:05:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:09,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:09,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:09,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:05:09,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:09,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:09,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:09,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:09,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:09,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:09,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:09,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:05:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:09,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:09,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:09,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:09,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:09,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:09,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:09,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:09,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:09,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:09,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:09,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:05:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:09,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:09,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:09,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:09,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:09,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 02:05:09,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:09,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:09,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:09,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:09,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:09,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 02:05:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:09,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:09,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:09,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:09,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 02:05:09,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:05:09,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 02:05:09,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:09,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:09,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 02:05:09,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 02:05:09,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:09,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:05:09,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686222806] [2020-10-27 02:05:09,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:09,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 02:05:09,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392694023] [2020-10-27 02:05:09,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 02:05:09,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:09,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 02:05:09,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 02:05:09,277 INFO L87 Difference]: Start difference. First operand 567 states and 689 transitions. Second operand 11 states. [2020-10-27 02:05:09,432 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 02:05:09,900 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:05:11,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:11,211 INFO L93 Difference]: Finished difference Result 901 states and 1100 transitions. [2020-10-27 02:05:11,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 02:05:11,212 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-10-27 02:05:11,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:11,216 INFO L225 Difference]: With dead ends: 901 [2020-10-27 02:05:11,216 INFO L226 Difference]: Without dead ends: 583 [2020-10-27 02:05:11,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-10-27 02:05:11,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-10-27 02:05:11,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 549. [2020-10-27 02:05:11,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-27 02:05:11,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 659 transitions. [2020-10-27 02:05:11,301 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 659 transitions. Word has length 80 [2020-10-27 02:05:11,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:11,302 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 659 transitions. [2020-10-27 02:05:11,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 02:05:11,302 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 659 transitions. [2020-10-27 02:05:11,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 02:05:11,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:11,304 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] [2020-10-27 02:05:11,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 02:05:11,304 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:11,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:11,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1658071951, now seen corresponding path program 1 times [2020-10-27 02:05:11,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:11,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526244648] [2020-10-27 02:05:11,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:11,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:11,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:11,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:11,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 02:05:11,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:05:11,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-27 02:05:11,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:11,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:05:11,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 02:05:11,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 02:05:11,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 02:05:11,920 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:05:11,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:11,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:11,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:11,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:11,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:11,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 02:05:11,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:11,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:11,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:11,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:11,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:11,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:11,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:11,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:11,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:11,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:11,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:11,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:11,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:12,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:12,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:12,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:12,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:12,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:12,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:12,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:12,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:12,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:12,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:12,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:12,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 02:05:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:12,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:12,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:12,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:12,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 02:05:12,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:05:12,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 02:05:12,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:12,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:12,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:12,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 02:05:12,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:12,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:05:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:12,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:12,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:12,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:05:12,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:12,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:12,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:12,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:12,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:12,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:12,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:12,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:05:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:12,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:12,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:12,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:12,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:12,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:12,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:12,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:12,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:12,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:12,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:12,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:05:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:12,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:12,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:12,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:12,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:12,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:12,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:12,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:12,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:12,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:12,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:12,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 02:05:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:12,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:12,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:12,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 02:05:12,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:12,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 02:05:12,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:12,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:12,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 02:05:12,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:12,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:12,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:05:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:12,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:12,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:12,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 02:05:12,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:12,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:12,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:12,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:12,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:12,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:12,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:12,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:05:12,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526244648] [2020-10-27 02:05:12,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:12,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 02:05:12,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698926876] [2020-10-27 02:05:12,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 02:05:12,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:12,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 02:05:12,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-27 02:05:12,290 INFO L87 Difference]: Start difference. First operand 549 states and 659 transitions. Second operand 14 states. [2020-10-27 02:05:13,528 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 02:05:14,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:14,440 INFO L93 Difference]: Finished difference Result 913 states and 1134 transitions. [2020-10-27 02:05:14,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 02:05:14,441 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 81 [2020-10-27 02:05:14,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:14,446 INFO L225 Difference]: With dead ends: 913 [2020-10-27 02:05:14,446 INFO L226 Difference]: Without dead ends: 658 [2020-10-27 02:05:14,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-10-27 02:05:14,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-27 02:05:14,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 513. [2020-10-27 02:05:14,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-10-27 02:05:14,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 613 transitions. [2020-10-27 02:05:14,514 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 613 transitions. Word has length 81 [2020-10-27 02:05:14,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:14,514 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 613 transitions. [2020-10-27 02:05:14,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 02:05:14,515 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 613 transitions. [2020-10-27 02:05:14,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 02:05:14,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:14,516 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] [2020-10-27 02:05:14,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 02:05:14,517 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:14,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:14,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1896388157, now seen corresponding path program 1 times [2020-10-27 02:05:14,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:14,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039055943] [2020-10-27 02:05:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:14,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:14,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:15,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:18,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:18,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 02:05:18,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:05:18,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3509 [2020-10-27 02:05:18,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:18,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:05:18,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 02:05:18,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 02:05:18,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:18,210 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:05:18,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:18,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:18,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:18,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:18,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:18,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:05:18,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:18,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:18,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:18,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:18,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:18,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:18,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:18,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:18,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:18,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:18,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:18,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:18,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:18,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:18,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:18,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:18,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:18,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:18,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:18,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:18,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:18,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:18,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 02:05:18,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:18,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:05:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:18,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:18,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:18,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:18,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 02:05:18,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:05:18,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-27 02:05:18,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:18,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 02:05:18,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 02:05:18,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 02:05:18,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:18,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 02:05:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:18,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:18,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:18,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:05:18,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:18,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:05:18,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:18,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:18,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:18,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:05:18,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:18,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 02:05:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:18,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:18,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:18,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 02:05:18,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:18,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 02:05:18,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 02:05:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 02:05:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 02:05:18,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:18,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 02:05:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:18,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:18,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:18,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:05:18,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:18,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:05:18,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 02:05:18,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:05:18,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039055943] [2020-10-27 02:05:18,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:18,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 02:05:18,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119463863] [2020-10-27 02:05:18,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 02:05:18,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:18,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 02:05:18,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-27 02:05:18,843 INFO L87 Difference]: Start difference. First operand 513 states and 613 transitions. Second operand 13 states. [2020-10-27 02:05:19,001 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 02:05:21,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:21,104 INFO L93 Difference]: Finished difference Result 1009 states and 1188 transitions. [2020-10-27 02:05:21,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 02:05:21,105 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 78 [2020-10-27 02:05:21,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:21,110 INFO L225 Difference]: With dead ends: 1009 [2020-10-27 02:05:21,110 INFO L226 Difference]: Without dead ends: 666 [2020-10-27 02:05:21,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-27 02:05:21,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2020-10-27 02:05:21,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 634. [2020-10-27 02:05:21,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-10-27 02:05:21,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 746 transitions. [2020-10-27 02:05:21,221 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 746 transitions. Word has length 78 [2020-10-27 02:05:21,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:21,222 INFO L481 AbstractCegarLoop]: Abstraction has 634 states and 746 transitions. [2020-10-27 02:05:21,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 02:05:21,222 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 746 transitions. [2020-10-27 02:05:21,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 02:05:21,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:21,223 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] [2020-10-27 02:05:21,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 02:05:21,224 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:21,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:21,224 INFO L82 PathProgramCache]: Analyzing trace with hash -2100800956, now seen corresponding path program 1 times [2020-10-27 02:05:21,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:21,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041966574] [2020-10-27 02:05:21,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:21,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:21,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:21,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:21,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 02:05:21,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 02:05:21,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-10-27 02:05:21,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 02:05:21,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:05:21,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:21,977 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:05:21,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:21,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:21,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:21,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:21,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:21,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:05:21,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:21,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:21,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:22,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:22,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:22,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:22,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:22,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:22,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:22,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:22,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:22,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:22,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:22,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:22,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:22,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:22,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:22,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:22,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:22,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:22,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:22,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:22,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:22,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:22,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:22,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:05:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:22,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:22,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:22,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 02:05:22,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:22,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 02:05:22,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:22,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:22,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 02:05:22,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:05:22,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:22,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 02:05:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:22,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:22,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:22,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:05:22,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:22,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 02:05:22,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 02:05:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 02:05:22,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:22,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 02:05:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:22,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:22,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:22,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 02:05:22,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:22,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 02:05:22,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:22,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:22,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 02:05:22,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:22,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:22,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 02:05:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:22,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:22,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:22,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 02:05:22,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:22,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:05:22,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:22,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:22,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 02:05:22,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:22,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:22,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:05:22,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041966574] [2020-10-27 02:05:22,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:22,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 02:05:22,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498244399] [2020-10-27 02:05:22,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 02:05:22,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:22,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 02:05:22,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-27 02:05:22,290 INFO L87 Difference]: Start difference. First operand 634 states and 746 transitions. Second operand 12 states. [2020-10-27 02:05:24,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:24,138 INFO L93 Difference]: Finished difference Result 691 states and 807 transitions. [2020-10-27 02:05:24,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 02:05:24,139 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-10-27 02:05:24,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:24,141 INFO L225 Difference]: With dead ends: 691 [2020-10-27 02:05:24,141 INFO L226 Difference]: Without dead ends: 637 [2020-10-27 02:05:24,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-27 02:05:24,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2020-10-27 02:05:24,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 634. [2020-10-27 02:05:24,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-10-27 02:05:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 745 transitions. [2020-10-27 02:05:24,213 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 745 transitions. Word has length 79 [2020-10-27 02:05:24,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:24,214 INFO L481 AbstractCegarLoop]: Abstraction has 634 states and 745 transitions. [2020-10-27 02:05:24,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 02:05:24,214 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 745 transitions. [2020-10-27 02:05:24,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 02:05:24,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:24,216 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, 1] [2020-10-27 02:05:24,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 02:05:24,216 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:24,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:24,216 INFO L82 PathProgramCache]: Analyzing trace with hash 875416165, now seen corresponding path program 1 times [2020-10-27 02:05:24,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:24,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195910271] [2020-10-27 02:05:24,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:24,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:24,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:24,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:24,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:24,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 02:05:24,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:05:24,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-10-27 02:05:24,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:24,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 02:05:24,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 02:05:24,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 02:05:24,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:24,997 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:05:24,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:25,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:25,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:25,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:25,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:25,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 02:05:25,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:25,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:25,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:25,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:25,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:25,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:25,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:25,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:25,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:25,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:25,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:25,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:25,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:25,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:25,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:25,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:25,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:25,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:25,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:25,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:25,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:25,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:25,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:25,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:25,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:25,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:25,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:25,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:05:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:25,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:25,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:25,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 02:05:25,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:25,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 02:05:25,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:05:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 02:05:25,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:25,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:05:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:25,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:25,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:25,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 02:05:25,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:25,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 02:05:25,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:25,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:25,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:25,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 02:05:25,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:25,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:05:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:25,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:25,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:25,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:05:25,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:25,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:25,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:25,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:25,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:25,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:25,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:25,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:05:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:25,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:25,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:25,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:25,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:25,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 02:05:25,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:25,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:25,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:25,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:25,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:05:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:25,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:25,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:25,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:25,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:25,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:25,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:25,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:25,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:25,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:25,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:25,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 02:05:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:25,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:25,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:25,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:05:25,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:25,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:25,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:25,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:05:25,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:25,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:05:25,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195910271] [2020-10-27 02:05:25,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:25,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 02:05:25,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043998340] [2020-10-27 02:05:25,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 02:05:25,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:25,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 02:05:25,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-27 02:05:25,436 INFO L87 Difference]: Start difference. First operand 634 states and 745 transitions. Second operand 16 states. [2020-10-27 02:05:26,781 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 02:05:27,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:27,587 INFO L93 Difference]: Finished difference Result 693 states and 808 transitions. [2020-10-27 02:05:27,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 02:05:27,588 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 86 [2020-10-27 02:05:27,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:27,592 INFO L225 Difference]: With dead ends: 693 [2020-10-27 02:05:27,592 INFO L226 Difference]: Without dead ends: 671 [2020-10-27 02:05:27,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2020-10-27 02:05:27,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2020-10-27 02:05:27,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 642. [2020-10-27 02:05:27,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-10-27 02:05:27,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 754 transitions. [2020-10-27 02:05:27,668 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 754 transitions. Word has length 86 [2020-10-27 02:05:27,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:27,669 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 754 transitions. [2020-10-27 02:05:27,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 02:05:27,669 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 754 transitions. [2020-10-27 02:05:27,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 02:05:27,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:27,670 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, 1, 1] [2020-10-27 02:05:27,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 02:05:27,671 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:27,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:27,671 INFO L82 PathProgramCache]: Analyzing trace with hash 876598832, now seen corresponding path program 1 times [2020-10-27 02:05:27,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:27,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274088890] [2020-10-27 02:05:27,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:27,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:27,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:27,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:28,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:28,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 02:05:28,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 02:05:28,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-10-27 02:05:28,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 02:05:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 02:05:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 02:05:28,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:28,573 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 02:05:28,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 02:05:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:28,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:28,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:28,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:28,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:28,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 02:05:28,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:28,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:28,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 02:05:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:28,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:28,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:28,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:28,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:28,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:28,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:28,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:28,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:28,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:28,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:28,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 02:05:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:28,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:28,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:28,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:28,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:28,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:28,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:28,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:28,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:28,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:28,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:28,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 02:05:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:28,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:28,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:28,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 02:05:28,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:28,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 02:05:28,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 02:05:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 02:05:28,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:28,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:05:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:28,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:28,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:28,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 02:05:28,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:28,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 02:05:28,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 02:05:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 02:05:28,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:28,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 02:05:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:28,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:28,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:28,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 02:05:28,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:28,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 02:05:28,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:28,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:28,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:28,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:28,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:28,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 02:05:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:28,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:28,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:28,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:28,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:28,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 02:05:28,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:28,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:28,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 02:05:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:28,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:28,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:28,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 02:05:28,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:28,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:28,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:28,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 02:05:28,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:28,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 02:05:28,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:28,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 02:05:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 02:05:28,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 02:05:28,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 02:05:28,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 02:05:28,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 02:05:28,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 02:05:28,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 02:05:28,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 02:05:29,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 02:05:29,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 02:05:29,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 02:05:29,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 02:05:29,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274088890] [2020-10-27 02:05:29,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 02:05:29,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 02:05:29,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662558012] [2020-10-27 02:05:29,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 02:05:29,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 02:05:29,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 02:05:29,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-27 02:05:29,013 INFO L87 Difference]: Start difference. First operand 642 states and 754 transitions. Second operand 16 states. [2020-10-27 02:05:30,484 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 02:05:31,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 02:05:31,764 INFO L93 Difference]: Finished difference Result 693 states and 807 transitions. [2020-10-27 02:05:31,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 02:05:31,765 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 87 [2020-10-27 02:05:31,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 02:05:31,768 INFO L225 Difference]: With dead ends: 693 [2020-10-27 02:05:31,769 INFO L226 Difference]: Without dead ends: 671 [2020-10-27 02:05:31,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2020-10-27 02:05:31,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2020-10-27 02:05:31,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 634. [2020-10-27 02:05:31,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-10-27 02:05:31,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 744 transitions. [2020-10-27 02:05:31,838 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 744 transitions. Word has length 87 [2020-10-27 02:05:31,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 02:05:31,838 INFO L481 AbstractCegarLoop]: Abstraction has 634 states and 744 transitions. [2020-10-27 02:05:31,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 02:05:31,838 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 744 transitions. [2020-10-27 02:05:31,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 02:05:31,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 02:05:31,840 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] [2020-10-27 02:05:31,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 02:05:31,840 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 02:05:31,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 02:05:31,840 INFO L82 PathProgramCache]: Analyzing trace with hash -388788350, now seen corresponding path program 1 times [2020-10-27 02:05:31,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 02:05:31,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395319667] [2020-10-27 02:05:31,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 02:05:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 02:05:31,860 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 02:05:31,860 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 02:05:31,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 02:05:31,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:05:31 BoogieIcfgContainer [2020-10-27 02:05:31,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 02:05:31,902 INFO L168 Benchmark]: Toolchain (without parser) took 131764.20 ms. Allocated memory was 164.6 MB in the beginning and 723.5 MB in the end (delta: 558.9 MB). Free memory was 138.8 MB in the beginning and 587.6 MB in the end (delta: -448.8 MB). Peak memory consumption was 111.0 MB. Max. memory is 8.0 GB. [2020-10-27 02:05:31,902 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 125.8 MB. Free memory is still 80.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 02:05:31,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 572.91 ms. Allocated memory is still 164.6 MB. Free memory was 138.3 MB in the beginning and 117.3 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-27 02:05:31,903 INFO L168 Benchmark]: Boogie Preprocessor took 123.24 ms. Allocated memory is still 164.6 MB. Free memory was 117.2 MB in the beginning and 113.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 02:05:31,903 INFO L168 Benchmark]: RCFGBuilder took 1303.86 ms. Allocated memory is still 164.6 MB. Free memory was 113.7 MB in the beginning and 115.5 MB in the end (delta: -1.8 MB). Peak memory consumption was 26.3 MB. Max. memory is 8.0 GB. [2020-10-27 02:05:31,904 INFO L168 Benchmark]: TraceAbstraction took 129751.51 ms. Allocated memory was 164.6 MB in the beginning and 723.5 MB in the end (delta: 558.9 MB). Free memory was 115.0 MB in the beginning and 587.6 MB in the end (delta: -472.6 MB). Peak memory consumption was 85.7 MB. Max. memory is 8.0 GB. [2020-10-27 02:05:31,907 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 125.8 MB. Free memory is still 80.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 572.91 ms. Allocated memory is still 164.6 MB. Free memory was 138.3 MB in the beginning and 117.3 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 123.24 ms. Allocated memory is still 164.6 MB. Free memory was 117.2 MB in the beginning and 113.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1303.86 ms. Allocated memory is still 164.6 MB. Free memory was 113.7 MB in the beginning and 115.5 MB in the end (delta: -1.8 MB). Peak memory consumption was 26.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 129751.51 ms. Allocated memory was 164.6 MB in the beginning and 723.5 MB in the end (delta: 558.9 MB). Free memory was 115.0 MB in the beginning and 587.6 MB in the end (delta: -472.6 MB). Peak memory consumption was 85.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L36] int FloppyThread ; [L37] int KernelMode ; [L38] int Suspended ; [L39] int Executive ; [L40] int DiskController ; [L41] int FloppyDiskPeripheral ; [L42] int FlConfigCallBack ; [L43] int MaximumInterfaceType ; [L44] int MOUNTDEV_MOUNTED_DEVICE_GUID ; [L45] int myStatus ; [L46] int s ; [L47] int UNLOADED ; [L48] int NP ; [L49] int DC ; [L50] int SKIP1 ; [L51] int SKIP2 ; [L52] int MPR1 ; [L53] int MPR3 ; [L54] int IPC ; [L55] int pended ; [L56] int compRegistered ; [L57] int lowerDriverReturn ; [L58] int setEventCalled ; [L59] int customIrp ; [L91] int PagingReferenceCount = 0; [L92] int PagingMutex = 0; [L671] int status ; [L672] int irp = __VERIFIER_nondet_int() ; [L673] int pirp ; [L674] int pirp__IoStatus__Status ; [L675] int irp_choice = __VERIFIER_nondet_int() ; [L676] int devobj = __VERIFIER_nondet_int() ; [L677] int __cil_tmp8 ; [L679] FloppyThread = 0 [L680] KernelMode = 0 [L681] Suspended = 0 [L682] Executive = 0 [L683] DiskController = 0 [L684] FloppyDiskPeripheral = 0 [L685] FlConfigCallBack = 0 [L686] MaximumInterfaceType = 0 [L687] MOUNTDEV_MOUNTED_DEVICE_GUID = 0 [L688] myStatus = 0 [L689] s = 0 [L690] UNLOADED = 0 [L691] NP = 0 [L692] DC = 0 [L693] SKIP1 = 0 [L694] SKIP2 = 0 [L695] MPR1 = 0 [L696] MPR3 = 0 [L697] IPC = 0 [L698] pended = 0 [L699] compRegistered = 0 [L700] lowerDriverReturn = 0 [L701] setEventCalled = 0 [L702] customIrp = 0 [L706] status = 0 [L707] pirp = irp [L708] CALL _BLAST_init() [L74] UNLOADED = 0 [L75] NP = 1 [L76] DC = 2 [L77] SKIP1 = 3 [L78] SKIP2 = 4 [L79] MPR1 = 5 [L80] MPR3 = 6 [L81] IPC = 7 [L82] s = UNLOADED [L83] pended = 0 [L84] compRegistered = 0 [L85] lowerDriverReturn = 0 [L86] setEventCalled = 0 [L87] customIrp = 0 [L708] RET _BLAST_init() [L710] COND TRUE status >= 0 [L711] s = NP [L712] customIrp = 0 [L713] setEventCalled = customIrp [L714] lowerDriverReturn = setEventCalled [L715] compRegistered = lowerDriverReturn [L716] pended = compRegistered [L717] pirp__IoStatus__Status = 0 [L718] myStatus = 0 [L719] COND TRUE irp_choice == 0 [L720] pirp__IoStatus__Status = -1073741637 [L721] myStatus = -1073741637 [L724] CALL stub_driver_init() [L661] s = NP [L662] pended = 0 [L663] compRegistered = 0 [L664] lowerDriverReturn = 0 [L665] setEventCalled = 0 [L666] customIrp = 0 [L724] RET stub_driver_init() [L727] COND FALSE !(status < 0) [L731] int tmp_ndt_1; [L732] tmp_ndt_1 = __VERIFIER_nondet_int() [L733] COND TRUE tmp_ndt_1 == 3 [L740] CALL, EXPR FloppyPnp(devobj, pirp) [L164] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L165] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L166] int Irp__IoStatus__Information ; [L167] int Irp__IoStatus__Status ; [L168] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L169] int disketteExtension__IsRemoved = __VERIFIER_nondet_int() ; [L170] int disketteExtension__IsStarted = __VERIFIER_nondet_int() ; [L171] int disketteExtension__TargetObject = __VERIFIER_nondet_int() ; [L172] int disketteExtension__HoldNewRequests ; [L173] int disketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L174] int disketteExtension__InterfaceString__Buffer = __VERIFIER_nondet_int() ; [L175] int disketteExtension__InterfaceString = __VERIFIER_nondet_int() ; [L176] int disketteExtension__ArcName__Length = __VERIFIER_nondet_int() ; [L177] int disketteExtension__ArcName = __VERIFIER_nondet_int() ; [L178] int irpSp__MinorFunction = __VERIFIER_nondet_int() ; [L179] int IoGetConfigurationInformation__FloppyCount = __VERIFIER_nondet_int() ; [L180] int irpSp ; [L181] int disketteExtension ; [L182] int ntStatus ; [L183] int doneEvent = __VERIFIER_nondet_int() ; [L184] int irpSp___0 ; [L185] int nextIrpSp ; [L186] int nextIrpSp__Control ; [L187] int irpSp___1 ; [L188] int irpSp__Context ; [L189] int irpSp__Control ; [L190] long __cil_tmp29 ; [L191] long __cil_tmp30 ; [L194] ntStatus = 0 [L195] PagingReferenceCount ++ [L196] COND TRUE PagingReferenceCount == 1 [L199] disketteExtension = DeviceObject__DeviceExtension [L200] irpSp = Irp__Tail__Overlay__CurrentStackLocation [L201] COND FALSE !(\read(disketteExtension__IsRemoved)) [L210] COND FALSE !(irpSp__MinorFunction == 0) [L213] COND TRUE irpSp__MinorFunction == 5 [L239] COND TRUE irpSp__MinorFunction == 5 [L242] COND FALSE !(! disketteExtension__IsStarted) [L258] disketteExtension__HoldNewRequests = 1 [L259] CALL, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L101] int status ; [L102] int threadHandle = __VERIFIER_nondet_int() ; [L103] int DisketteExtension__PoweringDown = __VERIFIER_nondet_int() ; [L104] int DisketteExtension__ThreadReferenceCount = __VERIFIER_nondet_int() ; [L105] int DisketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L106] int Irp__IoStatus__Status ; [L107] int Irp__IoStatus__Information ; [L108] int Irp__Tail__Overlay__CurrentStackLocation__Control ; [L109] int ObjAttributes = __VERIFIER_nondet_int() ; [L110] int __cil_tmp12 ; [L111] int __cil_tmp13 ; [L114] COND FALSE !(DisketteExtension__PoweringDown == 1) [L120] DisketteExtension__ThreadReferenceCount ++ [L121] COND FALSE !(DisketteExtension__ThreadReferenceCount == 0) [L153] COND TRUE pended == 0 [L154] pended = 1 [L160] return (259); [L259] RET, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L259] ntStatus = FlQueueIrpToThread(Irp, disketteExtension) [L262] __cil_tmp29 = (long )ntStatus [L263] COND TRUE __cil_tmp29 == 259L [L265-L266] CALL KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) [L1036] COND FALSE !(s == MPR3) [L1045] COND FALSE !(customIrp == 1) [L1049] COND FALSE !(s == MPR3) [L1056] int tmp_ndt_8; [L1057] tmp_ndt_8 = __VERIFIER_nondet_int() [L1058] COND TRUE tmp_ndt_8 == 0 [L1064] return (0); [L265-L266] RET KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) [L268] COND TRUE disketteExtension__FloppyThread != 0 [L271] disketteExtension__FloppyThread = 0 [L272] Irp__IoStatus__Status = 0 [L273] myStatus = 0 [L274] COND TRUE s == NP [L275] s = SKIP1 [L282] Irp__CurrentLocation ++ [L283] Irp__Tail__Overlay__CurrentStackLocation ++ [L284] CALL, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) [L938] int returnVal2 ; [L939] int compRetStatus1 ; [L940] int lcontext = __VERIFIER_nondet_int() ; [L941] unsigned long __cil_tmp7 ; [L944] COND FALSE !(\read(compRegistered)) [L957] int tmp_ndt_12; [L958] tmp_ndt_12 = __VERIFIER_nondet_int() [L959] COND TRUE tmp_ndt_12 == 0 [L970] returnVal2 = 0 [L983] COND FALSE !(s == NP) [L987] COND FALSE !(s == MPR1) [L996] COND TRUE s == SKIP1 [L997] s = SKIP2 [L998] lowerDriverReturn = returnVal2 [L1006] return (returnVal2); [L284] RET, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) [L284] ntStatus = IofCallDriver(disketteExtension__TargetObject, Irp) [L430] PagingReferenceCount -- [L431] COND TRUE PagingReferenceCount == 0 [L434] return (ntStatus); [L740] RET, EXPR FloppyPnp(devobj, pirp) [L740] status = FloppyPnp(devobj, pirp) [L750] COND TRUE pended == 1 [L751] COND FALSE !(s == NP) [L758] COND TRUE pended == 1 [L759] COND FALSE !(s == MPR3) [L766] COND TRUE s != UNLOADED [L767] COND TRUE status != -1 [L768] COND FALSE !(s != SKIP2) [L782] COND TRUE pended == 1 [L783] COND TRUE status != 259 [L784] CALL errorFn() [L65] CALL reach_error() [L3] __assert_fail("0", "floppy_simpl3.cil-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 27 procedures, 309 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 129.6s, OverallIterations: 37, TraceHistogramMax: 1, AutomataDifference: 86.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12439 SDtfs, 16108 SDslu, 23081 SDs, 0 SdLazy, 44539 SolverSat, 5325 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 58.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 833 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 480 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 20.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=966occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 36 MinimizatonAttempts, 2045 StatesRemovedByMinimization, 36 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 37.9s InterpolantComputationTime, 2147 NumberOfCodeBlocks, 2147 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 2028 ConstructedInterpolants, 0 QuantifiedInterpolants, 611998 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 36 InterpolantComputations, 36 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...