/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:14:41,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:14:41,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:14:41,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:14:41,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:14:41,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:14:41,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:14:41,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:14:41,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:14:41,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:14:41,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:14:41,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:14:41,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:14:41,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:14:41,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:14:41,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:14:41,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:14:41,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:14:41,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:14:41,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:14:41,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:14:41,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:14:41,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:14:41,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:14:41,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:14:41,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:14:41,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:14:41,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:14:41,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:14:41,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:14:41,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:14:41,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:14:41,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:14:41,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:14:41,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:14:41,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:14:41,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:14:41,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:14:41,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:14:41,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:14:41,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:14:41,840 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 [2020-09-21 12:14:41,888 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:14:41,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:14:41,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:14:41,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:14:41,890 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:14:41,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:14:41,890 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:14:41,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:14:41,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:14:41,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:14:41,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:14:41,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:14:41,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:14:41,892 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:14:41,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:14:41,892 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:14:41,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:14:41,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:14:41,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:14:41,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:14:41,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:14:41,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:14:41,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:14:41,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:14:41,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:14:41,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:14:41,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:14:41,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:14:41,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:14:41,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:14:42,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:14:42,432 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:14:42,437 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:14:42,438 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:14:42,439 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:14:42,440 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product31.cil.c [2020-09-21 12:14:42,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68cb5004d/330f38674c6940bd8002035fc3f3091c/FLAGc08be1b0a [2020-09-21 12:14:43,124 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:14:43,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product31.cil.c [2020-09-21 12:14:43,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68cb5004d/330f38674c6940bd8002035fc3f3091c/FLAGc08be1b0a [2020-09-21 12:14:43,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68cb5004d/330f38674c6940bd8002035fc3f3091c [2020-09-21 12:14:43,408 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:14:43,413 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:14:43,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:14:43,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:14:43,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:14:43,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:14:43" (1/1) ... [2020-09-21 12:14:43,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:43, skipping insertion in model container [2020-09-21 12:14:43,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:14:43" (1/1) ... [2020-09-21 12:14:43,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:14:43,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:14:43,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:14:43,928 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:14:44,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:14:44,171 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:14:44,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:44 WrapperNode [2020-09-21 12:14:44,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:14:44,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:14:44,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:14:44,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:14:44,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:44" (1/1) ... [2020-09-21 12:14:44,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:44" (1/1) ... [2020-09-21 12:14:44,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:44" (1/1) ... [2020-09-21 12:14:44,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:44" (1/1) ... [2020-09-21 12:14:44,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:44" (1/1) ... [2020-09-21 12:14:44,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:44" (1/1) ... [2020-09-21 12:14:44,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:44" (1/1) ... [2020-09-21 12:14:44,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:14:44,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:14:44,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:14:44,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:14:44,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:44" (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 [2020-09-21 12:14:44,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:14:44,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:14:44,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 12:14:44,363 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 12:14:44,363 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 12:14:44,364 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 12:14:44,364 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 12:14:44,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:14:44,364 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 12:14:44,364 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 12:14:44,365 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 12:14:44,365 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 12:14:44,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 12:14:44,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 12:14:44,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 12:14:44,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 12:14:44,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 12:14:44,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 12:14:44,366 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 12:14:44,367 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 12:14:44,367 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 12:14:44,367 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 12:14:44,367 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 12:14:44,367 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 12:14:44,367 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 12:14:44,368 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 12:14:44,368 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 12:14:44,368 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 12:14:44,368 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 12:14:44,368 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 12:14:44,368 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-21 12:14:44,369 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 12:14:44,369 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 12:14:44,369 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 12:14:44,369 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 12:14:44,369 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 12:14:44,369 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 12:14:44,370 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 12:14:44,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-21 12:14:44,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 12:14:44,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:14:44,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:14:44,370 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:14:44,371 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 12:14:44,371 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 12:14:44,371 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 12:14:44,371 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 12:14:44,371 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 12:14:44,371 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 12:14:44,371 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 12:14:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 12:14:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 12:14:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 12:14:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 12:14:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 12:14:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:14:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 12:14:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 12:14:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:14:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:14:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 12:14:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:14:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:14:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:14:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:14:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 12:14:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:14:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 12:14:44,375 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 12:14:44,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:14:44,375 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 12:14:44,375 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 12:14:44,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:14:44,375 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 12:14:44,376 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 12:14:44,376 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 12:14:44,376 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 12:14:44,376 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 12:14:44,376 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 12:14:44,376 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 12:14:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 12:14:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 12:14:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 12:14:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-21 12:14:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 12:14:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 12:14:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 12:14:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-21 12:14:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 12:14:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-21 12:14:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 12:14:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:14:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:14:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:14:45,469 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:14:45,469 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:14:45,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:14:45 BoogieIcfgContainer [2020-09-21 12:14:45,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:14:45,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:14:45,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:14:45,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:14:45,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:14:43" (1/3) ... [2020-09-21 12:14:45,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72018808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:14:45, skipping insertion in model container [2020-09-21 12:14:45,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:14:44" (2/3) ... [2020-09-21 12:14:45,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72018808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:14:45, skipping insertion in model container [2020-09-21 12:14:45,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:14:45" (3/3) ... [2020-09-21 12:14:45,490 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product31.cil.c [2020-09-21 12:14:45,502 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:14:45,515 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:14:45,537 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:14:45,573 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:14:45,573 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:14:45,573 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:14:45,574 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:14:45,574 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:14:45,574 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:14:45,574 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:14:45,574 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:14:45,600 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-09-21 12:14:45,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 12:14:45,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:14:45,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:14:45,613 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:14:45,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:14:45,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1860559375, now seen corresponding path program 1 times [2020-09-21 12:14:45,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:14:45,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746352737] [2020-09-21 12:14:45,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:14:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:46,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:46,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:46,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:46,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 12:14:46,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:14:46,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-09-21 12:14:46,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:46,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:46,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 12:14:46,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:46,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:14:47,328 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:14:47,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:14:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:47,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:47,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:47,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:47,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:47,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-21 12:14:47,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:47,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:47,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:47,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:47,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:14:47,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:14:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:47,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:47,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:47,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:47,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:47,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:47,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:47,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:47,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:47,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:47,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:47,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:14:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:47,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:47,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:47,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:47,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:47,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:47,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:47,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:47,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:47,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:14:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:47,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:47,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:47,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:47,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:47,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:14:47,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:47,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:47,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:47,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:14:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:47,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:47,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:47,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:47,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:47,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:47,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:47,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:47,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:47,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:47,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:47,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:14:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:47,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:47,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:47,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:47,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:47,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:14:47,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:47,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:47,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:47,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:47,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:47,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:14:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:47,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:47,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:47,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:47,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:47,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:14:47,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:47,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:47,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:14:47,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746352737] [2020-09-21 12:14:47,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:14:47,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:14:47,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381869037] [2020-09-21 12:14:47,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:14:47,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:14:47,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:14:47,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:14:47,568 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 3 states. [2020-09-21 12:14:48,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:14:48,881 INFO L93 Difference]: Finished difference Result 299 states and 393 transitions. [2020-09-21 12:14:48,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:14:48,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 12:14:48,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:14:48,902 INFO L225 Difference]: With dead ends: 299 [2020-09-21 12:14:48,902 INFO L226 Difference]: Without dead ends: 162 [2020-09-21 12:14:48,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:14:48,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-21 12:14:49,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 128. [2020-09-21 12:14:49,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-21 12:14:49,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2020-09-21 12:14:49,014 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 46 [2020-09-21 12:14:49,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:14:49,014 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2020-09-21 12:14:49,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:14:49,015 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2020-09-21 12:14:49,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 12:14:49,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:14:49,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:14:49,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:14:49,019 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:14:49,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:14:49,020 INFO L82 PathProgramCache]: Analyzing trace with hash 344709466, now seen corresponding path program 1 times [2020-09-21 12:14:49,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:14:49,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193926631] [2020-09-21 12:14:49,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:14:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:49,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:49,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:50,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:50,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 12:14:50,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:14:50,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-21 12:14:50,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:50,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:50,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:14:50,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:14:50,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-21 12:14:50,383 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:14:50,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:14:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:50,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:50,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:50,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:50,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:50,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-21 12:14:50,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:50,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:50,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:50,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:50,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:50,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:14:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:50,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:50,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:50,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:50,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:50,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:14:50,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:50,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:50,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:14:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:50,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:50,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:50,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:50,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:50,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:14:50,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:50,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:50,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:50,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:50,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:50,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:14:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:50,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:50,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:50,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:50,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:50,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:14:50,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:50,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:50,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:50,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:50,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:50,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:14:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:50,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:50,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:50,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:50,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:50,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:14:50,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:50,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:50,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:50,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:50,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:50,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:14:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:50,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:50,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:50,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:50,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:50,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:14:50,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:50,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:50,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:50,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:50,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:50,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:14:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:50,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:50,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:50,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:50,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:50,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:14:50,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:50,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:50,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:50,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:14:50,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:14:50,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193926631] [2020-09-21 12:14:50,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:14:50,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:14:50,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636162187] [2020-09-21 12:14:50,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:14:50,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:14:50,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:14:50,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:14:50,574 INFO L87 Difference]: Start difference. First operand 128 states and 151 transitions. Second operand 4 states. [2020-09-21 12:14:51,231 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:14:52,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:14:52,134 INFO L93 Difference]: Finished difference Result 226 states and 276 transitions. [2020-09-21 12:14:52,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:14:52,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 12:14:52,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:14:52,138 INFO L225 Difference]: With dead ends: 226 [2020-09-21 12:14:52,138 INFO L226 Difference]: Without dead ends: 146 [2020-09-21 12:14:52,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:14:52,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-21 12:14:52,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 119. [2020-09-21 12:14:52,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-21 12:14:52,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2020-09-21 12:14:52,187 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 47 [2020-09-21 12:14:52,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:14:52,187 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2020-09-21 12:14:52,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:14:52,187 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2020-09-21 12:14:52,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 12:14:52,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:14:52,190 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] [2020-09-21 12:14:52,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:14:52,190 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:14:52,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:14:52,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1335502603, now seen corresponding path program 1 times [2020-09-21 12:14:52,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:14:52,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766302736] [2020-09-21 12:14:52,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:14:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:52,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:52,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:53,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:53,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-21 12:14:53,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:14:53,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1058 [2020-09-21 12:14:53,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:53,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:14:53,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:53,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-21 12:14:53,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 80 [2020-09-21 12:14:53,769 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:14:53,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:14:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:53,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:53,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:53,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:53,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:53,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-21 12:14:53,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:53,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:53,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:53,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:14:53,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:14:53,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:14:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:54,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:54,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:54,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:54,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:54,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:14:54,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:54,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:54,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:54,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:14:54,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:14:54,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:14:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:54,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:54,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:54,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:54,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:54,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:14:54,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:54,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:14:54,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:14:54,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:14:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:54,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:54,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:54,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:54,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:54,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:14:54,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:54,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:54,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:54,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:14:54,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:14:54,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:14:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:54,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:54,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:54,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:54,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:54,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:14:54,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:54,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:54,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:54,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:14:54,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:14:54,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:14:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:54,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:54,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:54,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:54,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:54,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:14:54,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:54,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:54,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:14:54,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:14:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:54,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:54,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:54,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:54,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:54,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:14:54,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:54,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:54,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:54,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:54,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:14:54,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:14:54,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766302736] [2020-09-21 12:14:54,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:14:54,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:14:54,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690348001] [2020-09-21 12:14:54,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:14:54,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:14:54,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:14:54,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:14:54,079 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand 4 states. [2020-09-21 12:14:54,402 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:14:55,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:14:55,881 INFO L93 Difference]: Finished difference Result 348 states and 431 transitions. [2020-09-21 12:14:55,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:14:55,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-21 12:14:55,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:14:55,888 INFO L225 Difference]: With dead ends: 348 [2020-09-21 12:14:55,888 INFO L226 Difference]: Without dead ends: 253 [2020-09-21 12:14:55,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:14:55,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-21 12:14:55,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 208. [2020-09-21 12:14:55,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-09-21 12:14:55,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 249 transitions. [2020-09-21 12:14:55,974 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 249 transitions. Word has length 51 [2020-09-21 12:14:55,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:14:55,975 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 249 transitions. [2020-09-21 12:14:55,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:14:55,975 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 249 transitions. [2020-09-21 12:14:55,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 12:14:55,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:14:55,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:14:55,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:14:55,978 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:14:55,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:14:55,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1187986019, now seen corresponding path program 1 times [2020-09-21 12:14:55,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:14:55,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633015513] [2020-09-21 12:14:55,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:14:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:56,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:57,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:57,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 12:14:57,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:57,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1057 [2020-09-21 12:14:57,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:57,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:14:57,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:57,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 12:14:57,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:14:57,511 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:14:57,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:14:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:57,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:57,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:57,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:57,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:57,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-21 12:14:57,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:57,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:57,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:57,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:14:57,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:14:57,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:14:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:57,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:57,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:57,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:57,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:57,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:14:57,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:57,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:14:57,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:14:57,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:14:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:57,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:57,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:57,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:57,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:57,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:14:57,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:57,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:57,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:57,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:14:57,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:14:57,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:14:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:57,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:57,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:57,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:57,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:57,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:14:57,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:57,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:57,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:14:57,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:14:57,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:14:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:57,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:57,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:57,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:14:57,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:57,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:14:57,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:57,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:57,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:57,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:14:57,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:14:57,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:14:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:57,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:57,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:57,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:14:57,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:57,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:14:57,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:57,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:14:57,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:57,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:14:57,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:14:57,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:14:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:57,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:57,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:57,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:57,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:57,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:14:57,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:57,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:14:57,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:14:57,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:14:57,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:14:57,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 12:14:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:14:57,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:14:57,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:14:57,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:14:57,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:14:57,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:14:57,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:14:57,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:14:57,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:14:57,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:14:57,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:14:57,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:14:57,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633015513] [2020-09-21 12:14:57,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:14:57,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:14:57,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587305980] [2020-09-21 12:14:57,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:14:57,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:14:57,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:14:57,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:14:57,896 INFO L87 Difference]: Start difference. First operand 208 states and 249 transitions. Second operand 8 states. [2020-09-21 12:14:58,334 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:14:59,686 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:00,161 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:15:00,477 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:15:00,730 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:01,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:01,930 INFO L93 Difference]: Finished difference Result 640 states and 832 transitions. [2020-09-21 12:15:01,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:15:01,935 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-09-21 12:15:01,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:01,940 INFO L225 Difference]: With dead ends: 640 [2020-09-21 12:15:01,940 INFO L226 Difference]: Without dead ends: 456 [2020-09-21 12:15:01,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:15:01,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-09-21 12:15:02,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 395. [2020-09-21 12:15:02,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-09-21 12:15:02,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 485 transitions. [2020-09-21 12:15:02,058 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 485 transitions. Word has length 57 [2020-09-21 12:15:02,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:02,059 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 485 transitions. [2020-09-21 12:15:02,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:15:02,059 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 485 transitions. [2020-09-21 12:15:02,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 12:15:02,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:02,062 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] [2020-09-21 12:15:02,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:15:02,063 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:02,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:02,063 INFO L82 PathProgramCache]: Analyzing trace with hash -2080325047, now seen corresponding path program 1 times [2020-09-21 12:15:02,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:02,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963905495] [2020-09-21 12:15:02,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:02,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:03,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:03,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-21 12:15:03,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:03,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:15:03,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:03,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-21 12:15:03,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:03,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-21 12:15:03,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:03,453 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:03,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:03,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:03,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:03,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:03,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:03,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-21 12:15:03,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:03,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:03,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:03,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:15:03,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:03,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:03,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:03,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:03,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:03,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:03,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:03,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:03,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:03,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:03,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:03,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:03,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:03,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:03,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:03,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:03,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:03,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:03,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:03,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:03,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:03,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:03,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:03,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:03,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:03,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:03,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:03,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:03,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:03,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:03,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:03,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:03,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:03,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:03,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:03,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:03,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:03,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:03,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:03,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:03,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:03,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:03,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:03,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:03,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:15:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:03,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:03,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:03,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:03,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:03,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:15:03,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:03,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:15:03,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:15:03,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:15:03,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:03,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:15:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:03,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:03,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:03,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:03,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:03,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:03,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:03,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:03,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:03,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:15:03,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:03,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 12:15:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:03,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:03,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:03,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:03,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:03,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:03,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:03,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:03,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:03,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:03,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:03,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 12:15:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:03,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:03,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:03,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:03,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:03,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:03,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:03,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:03,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:03,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:03,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:15:03,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963905495] [2020-09-21 12:15:03,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:03,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-21 12:15:03,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958207275] [2020-09-21 12:15:03,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 12:15:03,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:03,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 12:15:03,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:15:03,885 INFO L87 Difference]: Start difference. First operand 395 states and 485 transitions. Second operand 11 states. [2020-09-21 12:15:04,335 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:04,971 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:06,057 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:15:06,743 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:15:07,098 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:07,397 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:07,853 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:15:08,286 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:08,727 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:15:09,935 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 187 [2020-09-21 12:15:11,123 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 189 [2020-09-21 12:15:11,796 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 191 [2020-09-21 12:15:13,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:13,355 INFO L93 Difference]: Finished difference Result 1248 states and 1624 transitions. [2020-09-21 12:15:13,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-21 12:15:13,356 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2020-09-21 12:15:13,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:13,364 INFO L225 Difference]: With dead ends: 1248 [2020-09-21 12:15:13,364 INFO L226 Difference]: Without dead ends: 1038 [2020-09-21 12:15:13,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2020-09-21 12:15:13,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-09-21 12:15:13,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 853. [2020-09-21 12:15:13,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 853 states. [2020-09-21 12:15:13,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1037 transitions. [2020-09-21 12:15:13,609 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1037 transitions. Word has length 61 [2020-09-21 12:15:13,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:13,609 INFO L479 AbstractCegarLoop]: Abstraction has 853 states and 1037 transitions. [2020-09-21 12:15:13,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 12:15:13,609 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1037 transitions. [2020-09-21 12:15:13,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 12:15:13,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:13,615 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] [2020-09-21 12:15:13,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:15:13,615 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:13,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:13,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1722292439, now seen corresponding path program 1 times [2020-09-21 12:15:13,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:13,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851619343] [2020-09-21 12:15:13,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:13,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:14,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:14,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:14,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-21 12:15:14,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:14,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-09-21 12:15:14,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:14,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:14,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-21 12:15:14,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:15:14,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:14,964 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:14,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:14,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:15,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:15,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:15,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:15,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-21 12:15:15,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:15,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:15,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:15,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:15,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:15,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:15,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:15,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:15,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:15,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:15,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:15,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:15,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:15,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:15,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:15,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:15,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:15,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:15,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:15,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:15,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:15,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:15,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:15,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:15,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:15,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:15,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:15,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:15,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:15,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:15,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:15,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:15,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:15,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:15,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:15,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:15,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:15,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:15,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:15,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:15,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:15,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:15,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:15,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:15:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:15,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:15,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:15,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:15,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:15,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:15,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:15:15,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:15,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:15:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:15,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:15,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:15,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:15,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:15,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:15,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:15,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:15,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 12:15:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:15,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:15,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:15,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:15,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:15,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:15,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:15,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:15,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:15,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:15,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:15,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 12:15:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:15,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:15,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:15,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:15,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:15,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:15,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:15,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:15,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:15,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:15,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:15:15,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851619343] [2020-09-21 12:15:15,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:15,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:15:15,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149569318] [2020-09-21 12:15:15,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:15:15,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:15,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:15:15,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:15:15,146 INFO L87 Difference]: Start difference. First operand 853 states and 1037 transitions. Second operand 6 states. [2020-09-21 12:15:15,497 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:16,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:16,318 INFO L93 Difference]: Finished difference Result 1060 states and 1315 transitions. [2020-09-21 12:15:16,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:15:16,320 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-09-21 12:15:16,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:16,320 INFO L225 Difference]: With dead ends: 1060 [2020-09-21 12:15:16,321 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 12:15:16,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:15:16,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 12:15:16,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 12:15:16,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 12:15:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 12:15:16,327 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-09-21 12:15:16,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:16,327 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 12:15:16,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:15:16,327 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 12:15:16,327 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 12:15:16,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:15:16,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 12:15:16,572 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:16,769 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:16,962 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:15:17,147 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:17,364 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:18,034 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 96 [2020-09-21 12:15:18,213 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:18,397 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:18,554 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:18,717 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:15:18,885 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:19,600 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 205 [2020-09-21 12:15:19,762 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:19,929 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:20,089 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:20,248 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:15:20,904 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 96 [2020-09-21 12:15:21,044 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:21,365 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 189 [2020-09-21 12:15:21,628 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-09-21 12:15:21,900 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-09-21 12:15:22,167 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-09-21 12:15:22,426 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 189 [2020-09-21 12:15:22,586 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:22,746 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:22,904 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:15:23,056 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:23,215 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:23,377 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:23,530 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:23,687 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:23,847 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:15:24,004 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:24,162 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:24,319 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:15:24,477 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:24,631 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:24,796 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:24,954 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:25,123 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:25,281 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:25,436 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:25,601 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:15:25,755 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:26,343 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 96 [2020-09-21 12:15:26,500 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:26,666 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:26,819 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:26,972 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:27,130 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:15:27,287 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:27,449 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:27,607 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:27,761 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:27,918 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:15:28,090 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:28,247 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:15:28,400 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:28,558 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:29,122 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 96 [2020-09-21 12:15:29,286 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:29,447 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:29,606 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:15:29,758 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:29,924 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:30,108 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:30,279 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:30,449 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:30,621 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:30,870 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 190 [2020-09-21 12:15:31,120 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-09-21 12:15:31,372 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 190 [2020-09-21 12:15:31,526 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:31,691 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:31,871 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:15:32,030 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:32,182 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:32,335 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:32,493 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:32,655 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:33,303 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 18 [2020-09-21 12:15:33,580 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-09-21 12:15:33,876 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 1 [2020-09-21 12:15:34,060 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 25 [2020-09-21 12:15:34,260 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 1 [2020-09-21 12:15:34,750 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:35,414 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 21 [2020-09-21 12:15:35,651 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-09-21 12:15:36,305 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 18 [2020-09-21 12:15:36,534 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 1 [2020-09-21 12:15:37,214 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 23