/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --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_spec1_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:03:49,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:03:49,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:03:49,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:03:49,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:03:49,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:03:49,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:03:49,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:03:49,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:03:49,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:03:49,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:03:49,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:03:49,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:03:49,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:03:49,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:03:49,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:03:49,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:03:49,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:03:49,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:03:49,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:03:49,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:03:49,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:03:49,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:03:49,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:03:49,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:03:49,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:03:49,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:03:49,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:03:49,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:03:49,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:03:49,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:03:49,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:03:49,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:03:49,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:03:49,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:03:49,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:03:49,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:03:49,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:03:49,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:03:49,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:03:49,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:03:49,732 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 [2020-09-24 19:03:49,758 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:03:49,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:03:49,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:03:49,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:03:49,760 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:03:49,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:03:49,760 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:03:49,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:03:49,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:03:49,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:03:49,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:03:49,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:03:49,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:03:49,762 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:03:49,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:03:49,762 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:03:49,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:03:49,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:03:49,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:03:49,763 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:03:49,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:03:49,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:03:49,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:03:49,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:03:49,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:03:49,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:03:49,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:03:49,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:03:49,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:03:49,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement 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; [2020-09-24 19:03:50,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:03:50,244 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:03:50,249 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:03:50,251 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:03:50,253 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:03:50,254 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2020-09-24 19:03:50,350 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac8d9b3fd/23a9e5a3a557445eb65c3c302a14e32a/FLAGe38b962f7 [2020-09-24 19:03:50,956 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:03:50,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2020-09-24 19:03:50,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac8d9b3fd/23a9e5a3a557445eb65c3c302a14e32a/FLAGe38b962f7 [2020-09-24 19:03:51,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac8d9b3fd/23a9e5a3a557445eb65c3c302a14e32a [2020-09-24 19:03:51,253 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:03:51,260 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:03:51,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:03:51,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:03:51,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:03:51,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:03:51" (1/1) ... [2020-09-24 19:03:51,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a0bb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:51, skipping insertion in model container [2020-09-24 19:03:51,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:03:51" (1/1) ... [2020-09-24 19:03:51,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:03:51,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:03:51,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:03:51,936 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:03:52,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:03:52,086 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:03:52,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:52 WrapperNode [2020-09-24 19:03:52,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:03:52,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:03:52,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:03:52,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:03:52,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:52" (1/1) ... [2020-09-24 19:03:52,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:52" (1/1) ... [2020-09-24 19:03:52,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:52" (1/1) ... [2020-09-24 19:03:52,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:52" (1/1) ... [2020-09-24 19:03:52,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:52" (1/1) ... [2020-09-24 19:03:52,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:52" (1/1) ... [2020-09-24 19:03:52,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:52" (1/1) ... [2020-09-24 19:03:52,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:03:52,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:03:52,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:03:52,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:03:52,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:52" (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 [2020-09-24 19:03:52,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:03:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:03:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 19:03:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 19:03:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 19:03:52,300 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 19:03:52,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 19:03:52,300 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 19:03:52,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 19:03:52,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 19:03:52,301 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 19:03:52,301 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 19:03:52,301 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 19:03:52,301 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 19:03:52,301 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 19:03:52,302 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 19:03:52,302 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 19:03:52,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 19:03:52,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 19:03:52,303 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 19:03:52,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 19:03:52,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 19:03:52,303 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 19:03:52,303 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 19:03:52,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 19:03:52,304 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 19:03:52,304 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 19:03:52,304 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 19:03:52,304 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 19:03:52,304 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 19:03:52,304 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:03:52,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-24 19:03:52,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 19:03:52,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 19:03:52,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 19:03:52,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 19:03:52,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 19:03:52,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 19:03:52,306 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 19:03:52,306 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 19:03:52,306 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 19:03:52,306 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 19:03:52,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:03:52,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:03:52,307 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 19:03:52,307 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 19:03:52,307 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 19:03:52,307 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 19:03:52,307 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 19:03:52,308 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 19:03:52,308 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 19:03:52,308 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 19:03:52,308 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 19:03:52,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:03:52,309 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 19:03:52,309 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 19:03:52,309 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 19:03:52,309 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 19:03:52,309 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 19:03:52,309 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 19:03:52,309 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 19:03:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-24 19:03:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 19:03:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 19:03:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 19:03:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 19:03:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 19:03:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 19:03:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 19:03:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 19:03:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 19:03:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 19:03:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 19:03:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 19:03:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 19:03:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 19:03:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 19:03:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:03:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 19:03:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 19:03:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 19:03:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 19:03:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 19:03:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 19:03:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:03:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 19:03:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 19:03:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:03:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 19:03:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 19:03:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:03:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 19:03:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 19:03:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 19:03:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 19:03:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:03:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 19:03:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:03:53,517 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:03:53,517 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 19:03:53,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:03:53 BoogieIcfgContainer [2020-09-24 19:03:53,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:03:53,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:03:53,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:03:53,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:03:53,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:03:51" (1/3) ... [2020-09-24 19:03:53,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a86031f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:03:53, skipping insertion in model container [2020-09-24 19:03:53,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:03:52" (2/3) ... [2020-09-24 19:03:53,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a86031f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:03:53, skipping insertion in model container [2020-09-24 19:03:53,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:03:53" (3/3) ... [2020-09-24 19:03:53,535 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product52.cil.c [2020-09-24 19:03:53,547 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:03:53,559 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:03:53,582 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:03:53,616 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:03:53,616 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:03:53,616 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:03:53,616 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:03:53,616 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:03:53,617 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:03:53,617 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:03:53,617 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:03:53,659 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states. [2020-09-24 19:03:53,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 19:03:53,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:03:53,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:03:53,683 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:03:53,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:03:53,691 INFO L82 PathProgramCache]: Analyzing trace with hash 254159831, now seen corresponding path program 1 times [2020-09-24 19:03:53,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:03:53,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129882674] [2020-09-24 19:03:53,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:03:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:54,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:54,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:55,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:55,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 19:03:55,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:03:55,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-24 19:03:55,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:55,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:55,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 19:03:55,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:55,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:03:55,411 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 19:03:55,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:03:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:55,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:55,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:55,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:03:55,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:55,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-24 19:03:55,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:55,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:55,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:55,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:55,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:55,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:03:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:55,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:55,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:55,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:55,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:55,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:55,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:55,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:55,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:55,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:55,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:55,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 19:03:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:55,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:55,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:55,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:55,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:55,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:55,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:55,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:55,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:55,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:55,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:55,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:03:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:55,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:55,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:55,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:55,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:55,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:03:55,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:55,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:55,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:55,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:03:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:55,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:55,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:55,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:55,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:55,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:03:55,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:55,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:55,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:55,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:55,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:55,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 19:03:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:55,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:55,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:55,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:55,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:55,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:55,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:55,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:55,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:03:55,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:55,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:55,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 19:03:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:55,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:55,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:55,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:55,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:55,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:55,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:55,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:55,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:03:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:55,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:55,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:03:55,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129882674] [2020-09-24 19:03:55,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:03:55,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:03:55,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428117829] [2020-09-24 19:03:55,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:03:55,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:03:55,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:03:55,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:03:55,796 INFO L87 Difference]: Start difference. First operand 328 states. Second operand 3 states. [2020-09-24 19:03:57,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:03:57,366 INFO L93 Difference]: Finished difference Result 512 states and 609 transitions. [2020-09-24 19:03:57,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:03:57,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-24 19:03:57,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:03:57,400 INFO L225 Difference]: With dead ends: 512 [2020-09-24 19:03:57,401 INFO L226 Difference]: Without dead ends: 315 [2020-09-24 19:03:57,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:03:57,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-09-24 19:03:57,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 271. [2020-09-24 19:03:57,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-09-24 19:03:57,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 295 transitions. [2020-09-24 19:03:57,547 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 295 transitions. Word has length 142 [2020-09-24 19:03:57,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:03:57,549 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 295 transitions. [2020-09-24 19:03:57,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:03:57,549 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 295 transitions. [2020-09-24 19:03:57,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 19:03:57,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:03:57,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:03:57,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:03:57,555 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:03:57,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:03:57,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1230709371, now seen corresponding path program 1 times [2020-09-24 19:03:57,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:03:57,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464504023] [2020-09-24 19:03:57,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:03:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:57,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:57,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:58,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:58,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 19:03:58,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:03:58,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:03:58,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:58,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:03:58,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 19:03:58,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 19:03:58,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:58,919 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 19:03:58,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:03:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:58,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:59,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:59,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:03:59,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:59,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 19:03:59,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:59,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:59,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:59,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:59,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:59,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:03:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:59,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:59,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:59,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:59,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:59,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:03:59,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:59,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:59,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:59,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:59,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:59,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 19:03:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:59,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:59,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:59,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:59,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:59,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:03:59,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:59,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:59,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:03:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:59,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:59,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:59,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:59,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:59,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:59,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:59,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:59,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:59,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:59,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:59,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:03:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:59,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:59,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:59,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:03:59,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:59,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:03:59,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:59,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:59,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:03:59,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:59,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:59,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 19:03:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:59,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:59,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:59,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:59,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:59,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:03:59,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:03:59,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:59,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:59,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 19:03:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:03:59,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:03:59,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:03:59,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:03:59,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:03:59,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:03:59,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:03:59,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:03:59,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:03:59,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:03:59,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:03:59,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:03:59,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464504023] [2020-09-24 19:03:59,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:03:59,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:03:59,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765043435] [2020-09-24 19:03:59,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:03:59,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:03:59,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:03:59,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:03:59,203 INFO L87 Difference]: Start difference. First operand 271 states and 295 transitions. Second operand 4 states. [2020-09-24 19:03:59,847 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:04:00,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:04:00,949 INFO L93 Difference]: Finished difference Result 419 states and 472 transitions. [2020-09-24 19:04:00,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:04:00,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-24 19:04:00,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:04:00,956 INFO L225 Difference]: With dead ends: 419 [2020-09-24 19:04:00,956 INFO L226 Difference]: Without dead ends: 298 [2020-09-24 19:04:00,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:04:00,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-24 19:04:01,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 261. [2020-09-24 19:04:01,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-09-24 19:04:01,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 282 transitions. [2020-09-24 19:04:01,047 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 282 transitions. Word has length 143 [2020-09-24 19:04:01,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:04:01,048 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 282 transitions. [2020-09-24 19:04:01,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:04:01,048 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 282 transitions. [2020-09-24 19:04:01,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 19:04:01,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:04:01,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:04:01,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:04:01,056 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:04:01,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:04:01,056 INFO L82 PathProgramCache]: Analyzing trace with hash -11881279, now seen corresponding path program 1 times [2020-09-24 19:04:01,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:04:01,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512703608] [2020-09-24 19:04:01,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:04:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:01,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:01,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:02,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:02,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 19:04:02,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:04:02,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1068 [2020-09-24 19:04:02,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:02,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:02,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-24 19:04:02,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:04:02,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:02,586 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 19:04:02,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:04:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:02,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:02,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:02,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:04:02,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:02,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-24 19:04:02,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:02,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:02,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:02,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:02,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:02,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:04:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:02,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:02,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:02,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:04:02,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:02,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:04:02,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:02,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:02,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:02,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:02,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:02,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 19:04:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:02,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:02,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:02,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:04:02,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:02,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:04:02,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:02,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:02,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:02,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:02,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:02,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:04:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:02,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:02,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:02,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:04:02,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:02,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:04:02,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:02,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:02,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:02,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:02,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:04:02,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:04:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:02,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:02,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:02,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:04:02,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:02,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:04:02,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:02,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:02,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:02,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:02,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:02,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 19:04:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:02,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:02,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:02,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:04:02,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:02,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:04:02,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 19:04:02,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:02,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 19:04:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:02,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:02,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:02,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:04:02,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:02,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:04:02,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:02,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:02,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:04:02,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:02,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:02,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 19:04:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:02,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:02,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:02,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:04:02,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:02,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:04:02,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:02,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:02,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:04:02,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:02,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:04:02,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512703608] [2020-09-24 19:04:02,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:04:02,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:04:02,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449047668] [2020-09-24 19:04:02,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:04:02,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:04:02,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:04:02,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:04:02,938 INFO L87 Difference]: Start difference. First operand 261 states and 282 transitions. Second operand 5 states. [2020-09-24 19:04:03,745 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 19:04:05,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:04:05,827 INFO L93 Difference]: Finished difference Result 633 states and 733 transitions. [2020-09-24 19:04:05,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:04:05,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-24 19:04:05,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:04:05,835 INFO L225 Difference]: With dead ends: 633 [2020-09-24 19:04:05,836 INFO L226 Difference]: Without dead ends: 482 [2020-09-24 19:04:05,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:04:05,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-09-24 19:04:05,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 402. [2020-09-24 19:04:05,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-09-24 19:04:05,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 445 transitions. [2020-09-24 19:04:05,917 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 445 transitions. Word has length 156 [2020-09-24 19:04:05,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:04:05,918 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 445 transitions. [2020-09-24 19:04:05,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:04:05,919 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 445 transitions. [2020-09-24 19:04:05,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-24 19:04:05,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:04:05,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:04:05,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:04:05,923 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:04:05,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:04:05,923 INFO L82 PathProgramCache]: Analyzing trace with hash -409466612, now seen corresponding path program 1 times [2020-09-24 19:04:05,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:04:05,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116310154] [2020-09-24 19:04:05,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:04:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:06,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:06,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:07,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:07,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-24 19:04:07,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:04:07,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1096 [2020-09-24 19:04:07,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:07,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:04:07,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-09-24 19:04:07,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 19:04:07,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:07,574 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 19:04:07,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:04:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:07,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:07,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:07,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:04:07,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:07,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 19:04:07,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:07,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:07,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:07,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:07,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:07,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:04:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:07,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:07,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:07,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:04:07,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:07,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:04:07,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:07,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:07,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:07,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:07,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:07,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 19:04:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:07,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:07,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:07,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:04:07,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:07,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:04:07,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:07,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:07,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:07,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:04:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:07,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:07,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:07,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:04:07,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:07,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:04:07,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:07,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:07,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:07,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:07,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:07,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:04:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:07,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:07,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:07,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:04:07,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:07,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:04:07,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:07,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:07,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:07,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:07,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:07,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 19:04:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:07,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:07,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:07,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:04:07,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:07,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:04:07,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:07,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 19:04:07,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:07,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:04:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:07,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:07,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:07,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:04:07,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:07,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:04:07,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:07,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:07,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:07,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:04:07,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:07,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 19:04:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:07,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:07,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:07,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:04:07,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:07,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:04:07,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:07,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:04:07,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:07,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:04:07,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:07,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:04:07,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116310154] [2020-09-24 19:04:07,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:04:07,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 19:04:07,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809011119] [2020-09-24 19:04:07,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:04:07,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:04:07,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:04:07,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:04:07,874 INFO L87 Difference]: Start difference. First operand 402 states and 445 transitions. Second operand 9 states. [2020-09-24 19:04:08,541 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:04:10,055 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 19:04:10,384 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 19:04:10,736 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 19:04:11,106 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 19:04:11,441 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 19:04:12,198 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 19:04:12,505 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 19:04:12,848 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 19:04:13,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:04:13,850 INFO L93 Difference]: Finished difference Result 949 states and 1135 transitions. [2020-09-24 19:04:13,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:04:13,851 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-09-24 19:04:13,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:04:13,856 INFO L225 Difference]: With dead ends: 949 [2020-09-24 19:04:13,857 INFO L226 Difference]: Without dead ends: 657 [2020-09-24 19:04:13,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-24 19:04:13,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-09-24 19:04:13,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 580. [2020-09-24 19:04:13,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-09-24 19:04:13,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 660 transitions. [2020-09-24 19:04:13,942 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 660 transitions. Word has length 161 [2020-09-24 19:04:13,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:04:13,943 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 660 transitions. [2020-09-24 19:04:13,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:04:13,943 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 660 transitions. [2020-09-24 19:04:13,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-24 19:04:13,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:04:13,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:04:13,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:04:13,947 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:04:13,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:04:13,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1037167753, now seen corresponding path program 1 times [2020-09-24 19:04:13,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:04:13,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126792088] [2020-09-24 19:04:13,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:04:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:14,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:14,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:15,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:15,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-24 19:04:15,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:04:15,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:04:15,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:15,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:04:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-09-24 19:04:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:04:15,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:15,274 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 19:04:15,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:04:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:15,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:15,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:15,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:04:15,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:15,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-24 19:04:15,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:15,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:15,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:15,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:15,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:15,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:04:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:15,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:15,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:15,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:04:15,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:15,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:04:15,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:15,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:15,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:15,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:15,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:15,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 19:04:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:15,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:15,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:15,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:04:15,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:15,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:04:15,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:15,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:15,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:04:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:15,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:15,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:15,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:04:15,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:15,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:04:15,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:15,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:15,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:15,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:15,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:15,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:04:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:15,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:15,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:15,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:04:15,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:15,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:04:15,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:15,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:15,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:15,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:15,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:15,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 19:04:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:15,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:15,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:15,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:04:15,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:15,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:04:15,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:15,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:15,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:15,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:15,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:15,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 19:04:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:15,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:15,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:15,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 19:04:15,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:15,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 19:04:15,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:04:15,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 19:04:15,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:04:15,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:15,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:04:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:15,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:15,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:15,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 19:04:15,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:15,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 19:04:15,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:04:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 19:04:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:04:15,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:15,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:04:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:15,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:15,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:15,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:04:15,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:15,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 19:04:15,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:15,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:04:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 19:04:15,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:15,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:04:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:15,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:15,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:15,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:04:15,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:04:15,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:15,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:15,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 19:04:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:15,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:15,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:15,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:04:15,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:15,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:04:15,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 19:04:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:15,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:15,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-24 19:04:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:15,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:15,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:15,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:04:15,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:15,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:04:15,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:15,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:15,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:04:15,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:15,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:15,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-24 19:04:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:15,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:15,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:15,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:04:15,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:15,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:04:15,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:15,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:15,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:04:15,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:15,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:04:15,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126792088] [2020-09-24 19:04:15,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:04:15,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 19:04:15,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527233927] [2020-09-24 19:04:15,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 19:04:15,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:04:15,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 19:04:15,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:04:15,796 INFO L87 Difference]: Start difference. First operand 580 states and 660 transitions. Second operand 10 states. [2020-09-24 19:04:17,277 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:04:17,533 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 19:04:17,800 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 19:04:18,139 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:04:18,458 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 19:04:18,759 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:04:19,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:04:19,909 INFO L93 Difference]: Finished difference Result 1225 states and 1481 transitions. [2020-09-24 19:04:19,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:04:19,910 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 194 [2020-09-24 19:04:19,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:04:19,918 INFO L225 Difference]: With dead ends: 1225 [2020-09-24 19:04:19,918 INFO L226 Difference]: Without dead ends: 755 [2020-09-24 19:04:19,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:04:19,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2020-09-24 19:04:20,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 599. [2020-09-24 19:04:20,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-09-24 19:04:20,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 680 transitions. [2020-09-24 19:04:20,016 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 680 transitions. Word has length 194 [2020-09-24 19:04:20,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:04:20,017 INFO L479 AbstractCegarLoop]: Abstraction has 599 states and 680 transitions. [2020-09-24 19:04:20,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 19:04:20,017 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 680 transitions. [2020-09-24 19:04:20,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-24 19:04:20,020 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:04:20,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:04:20,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:04:20,021 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:04:20,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:04:20,021 INFO L82 PathProgramCache]: Analyzing trace with hash 63297577, now seen corresponding path program 1 times [2020-09-24 19:04:20,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:04:20,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421300417] [2020-09-24 19:04:20,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:04:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:20,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:20,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:21,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:21,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-24 19:04:21,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:04:21,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-09-24 19:04:21,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:21,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:04:21,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-09-24 19:04:21,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:04:21,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:21,375 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 19:04:21,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:04:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:21,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:21,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:21,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:04:21,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:21,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-24 19:04:21,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:21,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:21,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:21,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:21,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:21,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:04:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:21,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:21,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:21,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:04:21,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:21,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:04:21,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:21,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:21,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:21,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:21,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:21,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 19:04:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:21,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:21,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:21,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:04:21,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:21,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:04:21,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:21,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:21,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:21,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:21,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:21,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:04:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:21,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:21,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:21,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:04:21,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:21,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:04:21,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:21,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:21,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:21,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:21,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:21,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:04:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:21,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:21,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:21,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:04:21,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:21,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:04:21,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:21,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:21,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:21,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:21,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:21,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 19:04:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:21,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:21,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:21,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:04:21,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:21,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:04:21,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:21,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:21,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:21,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:21,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:21,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 19:04:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:21,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:21,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:21,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 19:04:21,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:21,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 19:04:21,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:21,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:04:21,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:04:21,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:04:21,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:21,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:04:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:21,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:21,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:21,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 19:04:21,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:21,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 19:04:21,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:21,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:04:21,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 19:04:21,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:04:21,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:21,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:04:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:21,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:21,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:21,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:04:21,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:21,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 19:04:21,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:21,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:04:21,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:04:21,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:04:21,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:21,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:04:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:21,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:21,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:21,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:04:21,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:21,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:04:21,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:21,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:04:21,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:21,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:04:21,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:21,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 19:04:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:21,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:21,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:04:21,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:21,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:04:21,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 19:04:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:21,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:21,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-24 19:04:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:21,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:21,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:21,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:04:21,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:21,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:04:21,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:04:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:21,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:21,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-24 19:04:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:21,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:21,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:21,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:04:21,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:21,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:04:21,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:21,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:21,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:04:21,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:21,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:04:21,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421300417] [2020-09-24 19:04:21,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:04:21,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 19:04:21,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961824093] [2020-09-24 19:04:21,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:04:21,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:04:21,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:04:21,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:04:21,999 INFO L87 Difference]: Start difference. First operand 599 states and 680 transitions. Second operand 9 states. [2020-09-24 19:04:23,324 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:04:23,645 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 19:04:23,975 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:04:24,317 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 19:04:24,620 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 19:04:26,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:04:26,087 INFO L93 Difference]: Finished difference Result 1266 states and 1548 transitions. [2020-09-24 19:04:26,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:04:26,088 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 194 [2020-09-24 19:04:26,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:04:26,095 INFO L225 Difference]: With dead ends: 1266 [2020-09-24 19:04:26,095 INFO L226 Difference]: Without dead ends: 777 [2020-09-24 19:04:26,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:04:26,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-09-24 19:04:26,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 611. [2020-09-24 19:04:26,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-09-24 19:04:26,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 692 transitions. [2020-09-24 19:04:26,191 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 692 transitions. Word has length 194 [2020-09-24 19:04:26,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:04:26,192 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 692 transitions. [2020-09-24 19:04:26,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:04:26,192 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 692 transitions. [2020-09-24 19:04:26,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-24 19:04:26,194 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:04:26,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:04:26,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:04:26,195 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:04:26,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:04:26,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1576996404, now seen corresponding path program 1 times [2020-09-24 19:04:26,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:04:26,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371560728] [2020-09-24 19:04:26,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:04:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:26,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:27,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:27,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:27,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-24 19:04:27,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:04:27,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-09-24 19:04:27,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:27,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 19:04:27,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 19:04:27,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 19:04:27,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:27,568 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 19:04:27,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:04:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:27,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:27,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:27,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:04:27,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:27,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-24 19:04:27,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:27,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:27,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:27,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 19:04:27,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:27,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:04:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:27,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:27,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:27,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:04:27,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:27,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:04:27,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:27,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:27,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:27,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:04:27,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:27,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 19:04:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:27,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:27,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:27,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:04:27,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:27,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:04:27,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:04:27,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:27,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:04:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:27,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:27,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:27,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:04:27,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:27,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:04:27,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:27,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:27,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:27,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:04:27,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:27,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:04:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:27,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:27,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:27,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:04:27,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:27,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:04:27,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:04:27,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:27,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 19:04:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:27,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:27,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:27,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:04:27,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:27,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:04:27,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:27,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:27,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:27,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:04:27,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:27,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 19:04:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:28,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:28,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:28,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 19:04:28,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:28,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 19:04:28,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:28,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:28,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 19:04:28,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:04:28,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:28,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:04:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:28,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:28,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:28,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 19:04:28,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:28,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 19:04:28,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:28,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:28,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:28,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 19:04:28,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:28,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:04:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:28,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:28,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:28,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:04:28,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:28,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 19:04:28,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:28,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:28,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:28,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:04:28,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:28,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:04:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:28,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:28,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:28,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:04:28,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:28,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:04:28,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:28,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:28,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:28,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 19:04:28,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:28,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 19:04:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:28,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:28,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:28,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:04:28,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:28,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:04:28,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:28,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:04:28,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:28,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-24 19:04:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:28,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:28,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:28,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:04:28,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:28,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:04:28,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:28,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:04:28,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:28,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:28,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-24 19:04:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:28,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:28,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:28,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:04:28,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:28,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:04:28,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:04:28,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:28,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:04:28,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371560728] [2020-09-24 19:04:28,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:04:28,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:04:28,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635449770] [2020-09-24 19:04:28,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:04:28,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:04:28,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:04:28,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:04:28,281 INFO L87 Difference]: Start difference. First operand 611 states and 692 transitions. Second operand 7 states. [2020-09-24 19:04:28,972 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 19:04:29,616 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 19:04:32,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:04:32,374 INFO L93 Difference]: Finished difference Result 1855 states and 2287 transitions. [2020-09-24 19:04:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 19:04:32,374 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-09-24 19:04:32,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:04:32,383 INFO L225 Difference]: With dead ends: 1855 [2020-09-24 19:04:32,384 INFO L226 Difference]: Without dead ends: 1354 [2020-09-24 19:04:32,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:04:32,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2020-09-24 19:04:32,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1132. [2020-09-24 19:04:32,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1132 states. [2020-09-24 19:04:32,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1301 transitions. [2020-09-24 19:04:32,548 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1301 transitions. Word has length 194 [2020-09-24 19:04:32,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:04:32,550 INFO L479 AbstractCegarLoop]: Abstraction has 1132 states and 1301 transitions. [2020-09-24 19:04:32,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:04:32,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1301 transitions. [2020-09-24 19:04:32,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-24 19:04:32,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:04:32,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:04:32,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:04:32,555 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:04:32,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:04:32,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1018590328, now seen corresponding path program 1 times [2020-09-24 19:04:32,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:04:32,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436593438] [2020-09-24 19:04:32,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:04:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:32,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:33,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:33,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-24 19:04:33,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:33,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-09-24 19:04:33,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:33,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 19:04:33,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 19:04:33,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-24 19:04:33,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:33,940 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 19:04:33,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:04:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:34,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:34,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:34,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:04:34,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:34,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-24 19:04:34,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:34,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:34,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:34,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 19:04:34,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:34,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 19:04:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:34,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:34,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:34,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:04:34,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:34,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:04:34,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:34,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:04:34,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:34,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 19:04:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:34,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:34,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:34,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:04:34,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:34,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:04:34,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:34,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:04:34,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:34,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:04:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:34,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:34,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:34,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:04:34,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:34,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:04:34,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:34,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:34,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:34,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:04:34,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:34,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 19:04:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:34,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:34,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:34,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 19:04:34,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:34,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:04:34,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:34,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:34,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:34,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:04:34,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:34,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 19:04:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:34,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:34,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:34,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:04:34,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:34,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:04:34,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:34,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:34,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:34,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:04:34,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:34,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 19:04:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:34,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:34,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:34,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:04:34,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:34,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:04:34,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:04:34,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:34,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 19:04:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:34,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:34,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:34,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 19:04:34,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:34,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 19:04:34,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:34,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:04:34,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:34,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 19:04:34,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:34,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:04:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:34,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:34,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:34,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 19:04:34,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:34,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:04:34,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:34,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:34,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:34,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:34,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:34,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:04:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:34,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:34,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:34,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:04:34,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:34,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:04:34,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:34,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:34,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:34,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:34,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:34,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 19:04:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:34,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:34,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:34,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:04:34,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:34,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:04:34,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:34,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:34,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:34,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 19:04:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:34,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:34,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:34,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 19:04:34,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:34,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:04:34,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:34,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:34,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:34,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:34,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-24 19:04:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:34,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:34,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:34,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:04:34,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:34,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:04:34,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:34,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:04:34,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:04:34,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 19:04:34,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:04:34,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-24 19:04:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:04:34,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:04:34,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:04:34,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:04:34,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:04:34,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:04:34,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:04:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:04:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:04:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:04:34,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:04:34,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:04:34,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436593438] [2020-09-24 19:04:34,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:04:34,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 19:04:34,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846796116] [2020-09-24 19:04:34,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 19:04:34,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:04:34,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 19:04:34,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:04:34,561 INFO L87 Difference]: Start difference. First operand 1132 states and 1301 transitions. Second operand 11 states. [2020-09-24 19:04:35,093 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 19:04:36,343 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 19:04:36,667 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 19:04:37,037 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 19:04:37,354 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 19:04:37,657 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 19:04:37,955 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 19:04:38,277 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 19:04:38,755 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187