/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --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_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:04:25,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:04:25,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:04:25,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:04:25,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:04:25,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:04:25,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:04:25,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:04:25,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:04:25,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:04:25,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:04:25,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:04:25,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:04:25,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:04:25,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:04:25,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:04:25,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:04:25,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:04:25,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:04:25,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:04:25,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:04:25,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:04:25,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:04:25,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:04:25,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:04:25,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:04:25,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:04:25,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:04:25,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:04:25,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:04:25,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:04:25,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:04:25,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:04:25,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:04:25,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:04:25,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:04:25,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:04:25,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:04:25,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:04:25,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:04:25,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:04:25,716 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 11:04:25,764 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:04:25,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:04:25,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:04:25,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:04:25,767 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:04:25,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:04:25,767 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:04:25,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:04:25,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:04:25,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:04:25,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:04:25,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:04:25,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:04:25,770 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:04:25,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:04:25,770 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:04:25,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:04:25,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:04:25,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:04:25,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:04:25,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:04:25,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:04:25,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:04:25,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:04:25,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:04:25,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:04:25,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:04:25,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:04:25,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:04:25,773 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:04:26,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:04:26,226 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:04:26,231 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:04:26,233 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:04:26,233 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:04:26,234 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-09-21 11:04:26,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60a1202d4/6eafcf5b70d64392b489668512c86258/FLAG20de8b34d [2020-09-21 11:04:26,905 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:04:26,906 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-09-21 11:04:26,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60a1202d4/6eafcf5b70d64392b489668512c86258/FLAG20de8b34d [2020-09-21 11:04:27,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60a1202d4/6eafcf5b70d64392b489668512c86258 [2020-09-21 11:04:27,199 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:04:27,204 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:04:27,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:04:27,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:04:27,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:04:27,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:04:27" (1/1) ... [2020-09-21 11:04:27,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:27, skipping insertion in model container [2020-09-21 11:04:27,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:04:27" (1/1) ... [2020-09-21 11:04:27,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:04:27,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:04:27,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:04:27,702 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:04:27,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:04:27,932 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:04:27,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:27 WrapperNode [2020-09-21 11:04:27,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:04:27,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:04:27,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:04:27,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:04:27,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:27" (1/1) ... [2020-09-21 11:04:27,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:27" (1/1) ... [2020-09-21 11:04:27,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:27" (1/1) ... [2020-09-21 11:04:27,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:27" (1/1) ... [2020-09-21 11:04:28,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:27" (1/1) ... [2020-09-21 11:04:28,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:27" (1/1) ... [2020-09-21 11:04:28,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:27" (1/1) ... [2020-09-21 11:04:28,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:04:28,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:04:28,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:04:28,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:04:28,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:04:28,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:04:28,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:04:28,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 11:04:28,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 11:04:28,152 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 11:04:28,152 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 11:04:28,152 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 11:04:28,153 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 11:04:28,153 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 11:04:28,154 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 11:04:28,154 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 11:04:28,154 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 11:04:28,154 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 11:04:28,155 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 11:04:28,155 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 11:04:28,156 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 11:04:28,156 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 11:04:28,156 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 11:04:28,156 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 11:04:28,157 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 11:04:28,157 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 11:04:28,157 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 11:04:28,157 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 11:04:28,157 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 11:04:28,157 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 11:04:28,158 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 11:04:28,159 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 11:04:28,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 11:04:28,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 11:04:28,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 11:04:28,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 11:04:28,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 11:04:28,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 11:04:28,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-21 11:04:28,160 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 11:04:28,160 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 11:04:28,160 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 11:04:28,160 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 11:04:28,160 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:04:28,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:04:28,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:04:28,161 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 11:04:28,161 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 11:04:28,161 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 11:04:28,161 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 11:04:28,162 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 11:04:28,162 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 11:04:28,162 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 11:04:28,162 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 11:04:28,162 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 11:04:28,162 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 11:04:28,162 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 11:04:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 11:04:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 11:04:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-21 11:04:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 11:04:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 11:04:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 11:04:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 11:04:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:04:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 11:04:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 11:04:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 11:04:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 11:04:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 11:04:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 11:04:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 11:04:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 11:04:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 11:04:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 11:04:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:04:28,167 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:04:28,167 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 11:04:28,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:04:28,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:04:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:04:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:04:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 11:04:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:04:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 11:04:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 11:04:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:04:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 11:04:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 11:04:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 11:04:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 11:04:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 11:04:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 11:04:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:04:28,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:04:28,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 11:04:28,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:04:31,220 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:04:31,220 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 11:04:31,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:04:31 BoogieIcfgContainer [2020-09-21 11:04:31,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:04:31,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:04:31,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:04:31,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:04:31,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:04:27" (1/3) ... [2020-09-21 11:04:31,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd39ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:04:31, skipping insertion in model container [2020-09-21 11:04:31,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:27" (2/3) ... [2020-09-21 11:04:31,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd39ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:04:31, skipping insertion in model container [2020-09-21 11:04:31,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:04:31" (3/3) ... [2020-09-21 11:04:31,235 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product36.cil.c [2020-09-21 11:04:31,246 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:04:31,256 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:04:31,276 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:04:31,307 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:04:31,307 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:04:31,307 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:04:31,307 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:04:31,307 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:04:31,307 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:04:31,308 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:04:31,308 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:04:31,333 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-09-21 11:04:31,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 11:04:31,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:31,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:04:31,346 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:31,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:31,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1779053206, now seen corresponding path program 1 times [2020-09-21 11:04:31,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:31,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098930056] [2020-09-21 11:04:31,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:31,694 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:31,695 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:31,695 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:31,695 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:31,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 11:04:31,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:31,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:04:31,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:31,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:31,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 11:04:31,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:31,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:32,090 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:32,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:32,107 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:32,107 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:32,107 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:32,107 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:32,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:32,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:32,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:32,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:32,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:32,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:32,187 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:32,187 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:32,187 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:32,188 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:32,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:32,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:32,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:32,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:32,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:32,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:32,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:32,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:32,194 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:32,194 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:32,194 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:32,194 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:32,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:32,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:32,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:32,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:32,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:32,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:32,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:32,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:32,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:32,200 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:32,201 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:32,201 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:32,201 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:32,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:32,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:32,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:32,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:32,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:32,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:32,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:32,208 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:32,208 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:32,208 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:32,209 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:32,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:32,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:32,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:32,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:32,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:32,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:32,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:32,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:32,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:04:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:32,214 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:32,215 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:32,215 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:32,215 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:32,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:32,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:32,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:32,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:32,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:32,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:32,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:32,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:32,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:04:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:32,222 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:32,222 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:32,222 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:32,223 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:32,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:32,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:32,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:32,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:32,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:32,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:32,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:32,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:04:32,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098930056] [2020-09-21 11:04:32,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:32,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:04:32,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259748527] [2020-09-21 11:04:32,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:04:32,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:32,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:04:32,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:04:32,298 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 3 states. [2020-09-21 11:04:33,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:04:33,357 INFO L93 Difference]: Finished difference Result 278 states and 364 transitions. [2020-09-21 11:04:33,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:04:33,360 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 11:04:33,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:04:33,377 INFO L225 Difference]: With dead ends: 278 [2020-09-21 11:04:33,377 INFO L226 Difference]: Without dead ends: 151 [2020-09-21 11:04:33,383 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 [2020-09-21 11:04:33,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-09-21 11:04:33,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 118. [2020-09-21 11:04:33,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-21 11:04:33,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-09-21 11:04:33,476 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 46 [2020-09-21 11:04:33,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:04:33,477 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-09-21 11:04:33,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:04:33,477 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-09-21 11:04:33,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 11:04:33,481 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:33,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:04:33,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:04:33,482 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:33,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:33,482 INFO L82 PathProgramCache]: Analyzing trace with hash 83171531, now seen corresponding path program 1 times [2020-09-21 11:04:33,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:33,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718430835] [2020-09-21 11:04:33,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:33,554 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:33,554 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:33,554 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:33,554 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:33,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 11:04:33,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:33,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:04:33,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:33,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:33,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 11:04:33,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:04:33,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:33,920 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:33,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:33,936 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:33,936 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:33,937 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:33,937 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:33,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:33,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:33,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:33,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:33,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:33,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:33,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:33,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:33,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:33,982 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:33,983 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:33,983 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:33,983 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:33,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:33,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:33,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:33,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:33,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:33,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:33,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:33,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:33,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:33,988 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:33,989 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:33,989 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:33,990 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:33,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:33,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:33,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:33,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:33,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:33,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:33,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:33,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:33,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:33,995 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:33,995 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:33,995 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:33,996 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:33,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:33,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:33,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:33,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:33,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:33,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:33,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:33,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:33,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:34,002 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:34,002 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:34,003 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:34,003 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:34,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:34,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:34,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:04:34,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:34,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:34,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:34,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:34,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:34,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:04:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:34,007 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:34,007 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:34,007 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:34,008 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:34,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:34,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:34,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:34,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:34,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:34,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:34,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:34,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:34,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:04:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:34,015 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:34,015 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:34,016 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:34,016 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:34,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:34,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:34,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:34,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:34,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:34,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:34,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:34,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:04:34,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718430835] [2020-09-21 11:04:34,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:34,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:04:34,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375274769] [2020-09-21 11:04:34,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:04:34,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:34,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:04:34,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:04:34,031 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 4 states. [2020-09-21 11:04:34,522 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:04:35,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:04:35,300 INFO L93 Difference]: Finished difference Result 198 states and 241 transitions. [2020-09-21 11:04:35,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:04:35,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 11:04:35,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:04:35,307 INFO L225 Difference]: With dead ends: 198 [2020-09-21 11:04:35,307 INFO L226 Difference]: Without dead ends: 135 [2020-09-21 11:04:35,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:04:35,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-09-21 11:04:35,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2020-09-21 11:04:35,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-21 11:04:35,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2020-09-21 11:04:35,344 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 47 [2020-09-21 11:04:35,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:04:35,344 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2020-09-21 11:04:35,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:04:35,344 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-09-21 11:04:35,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 11:04:35,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:35,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:04:35,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:04:35,347 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:35,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:35,347 INFO L82 PathProgramCache]: Analyzing trace with hash -532729622, now seen corresponding path program 1 times [2020-09-21 11:04:35,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:35,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094855226] [2020-09-21 11:04:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:35,795 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:04:35,796 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:35,796 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:35,796 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:35,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 11:04:35,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:35,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-09-21 11:04:35,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:04:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:35,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 11:04:35,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:36,114 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:36,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:36,184 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:36,184 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:36,184 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:36,185 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:36,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:36,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:36,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-21 11:04:36,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:36,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:36,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:36,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:04:36,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:36,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:36,220 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:36,220 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:36,220 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:36,220 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:36,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:36,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:36,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:36,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:36,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:36,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:36,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:36,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:36,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:36,225 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:36,225 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:36,225 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:36,225 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:36,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:36,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:36,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:36,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:36,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:36,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:36,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:36,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:36,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:36,230 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:36,231 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:36,231 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:36,231 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:36,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:36,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:36,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:36,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:36,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:36,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:36,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:36,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:36,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:36,236 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:36,237 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:36,237 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:36,237 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:36,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:36,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:36,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:36,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:36,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:36,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:36,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:36,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:36,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:04:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:36,241 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:36,242 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:36,242 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:36,242 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:36,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:36,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:36,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:04:36,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:36,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:36,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:36,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:36,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:36,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 11:04:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:36,246 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:36,246 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:36,247 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:36,247 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:36,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:36,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:36,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:36,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:36,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:36,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:36,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:36,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:36,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:04:36,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094855226] [2020-09-21 11:04:36,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:36,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:04:36,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602712327] [2020-09-21 11:04:36,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:04:36,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:36,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:04:36,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:04:36,258 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 4 states. [2020-09-21 11:04:36,632 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:04:38,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:04:38,015 INFO L93 Difference]: Finished difference Result 315 states and 385 transitions. [2020-09-21 11:04:38,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:04:38,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-21 11:04:38,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:04:38,021 INFO L225 Difference]: With dead ends: 315 [2020-09-21 11:04:38,021 INFO L226 Difference]: Without dead ends: 230 [2020-09-21 11:04:38,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:04:38,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-09-21 11:04:38,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 178. [2020-09-21 11:04:38,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-21 11:04:38,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 209 transitions. [2020-09-21 11:04:38,075 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 209 transitions. Word has length 52 [2020-09-21 11:04:38,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:04:38,075 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 209 transitions. [2020-09-21 11:04:38,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:04:38,075 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 209 transitions. [2020-09-21 11:04:38,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 11:04:38,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:38,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:04:38,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:04:38,078 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:38,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:38,079 INFO L82 PathProgramCache]: Analyzing trace with hash 692647563, now seen corresponding path program 1 times [2020-09-21 11:04:38,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:38,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163983292] [2020-09-21 11:04:38,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:38,438 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:38,438 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:38,439 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:38,439 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:38,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 11:04:38,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:38,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-21 11:04:38,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:38,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 11:04:38,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:38,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 11:04:38,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:38,870 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:38,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:38,946 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:38,946 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:38,947 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:38,947 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:38,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:38,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:38,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 11:04:38,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:38,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:38,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:38,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:04:38,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:38,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:38,990 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:38,990 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:38,990 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:38,991 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:38,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:38,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:38,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:38,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:38,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:38,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:38,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:38,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:38,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:38,996 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:38,996 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:38,996 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:38,996 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:38,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:38,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:38,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:38,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:38,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:38,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:38,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:39,001 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:39,002 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:39,002 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:39,002 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:39,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:39,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:39,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:39,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:39,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:39,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:39,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:39,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:39,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:39,008 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:39,008 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:39,008 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:39,008 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:39,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:39,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:39,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:39,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:39,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:39,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:04:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:39,032 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:39,033 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:39,033 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:39,033 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:39,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:04:39,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:39,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:39,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:39,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:39,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:39,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:04:39,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:39,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 11:04:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:39,049 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:39,049 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:39,050 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:39,050 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:39,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:39,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:39,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:04:39,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:39,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:04:39,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:39,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:39,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:39,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 11:04:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:39,083 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:39,084 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:39,084 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:39,084 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:39,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:39,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:39,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:39,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:39,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:39,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:39,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:39,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:39,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:04:39,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163983292] [2020-09-21 11:04:39,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:39,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:04:39,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782194326] [2020-09-21 11:04:39,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:04:39,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:39,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:04:39,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:04:39,102 INFO L87 Difference]: Start difference. First operand 178 states and 209 transitions. Second operand 8 states. [2020-09-21 11:04:39,639 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:04:40,855 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 11:04:41,234 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:04:41,552 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:04:41,849 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:04:42,272 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:04:43,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:04:43,146 INFO L93 Difference]: Finished difference Result 575 states and 742 transitions. [2020-09-21 11:04:43,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 11:04:43,146 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-09-21 11:04:43,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:04:43,152 INFO L225 Difference]: With dead ends: 575 [2020-09-21 11:04:43,152 INFO L226 Difference]: Without dead ends: 421 [2020-09-21 11:04:43,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 11:04:43,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-09-21 11:04:43,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 317. [2020-09-21 11:04:43,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-09-21 11:04:43,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 376 transitions. [2020-09-21 11:04:43,240 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 376 transitions. Word has length 57 [2020-09-21 11:04:43,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:04:43,240 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 376 transitions. [2020-09-21 11:04:43,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:04:43,241 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 376 transitions. [2020-09-21 11:04:43,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 11:04:43,244 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:43,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:04:43,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:04:43,245 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:43,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:43,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1256704497, now seen corresponding path program 1 times [2020-09-21 11:04:43,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:43,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952693729] [2020-09-21 11:04:43,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:43,683 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:43,684 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:43,684 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:43,684 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:43,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-21 11:04:43,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:43,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-09-21 11:04:43,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:43,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 11:04:43,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:43,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-21 11:04:43,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,090 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:44,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,158 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,159 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,159 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,159 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:44,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-21 11:04:44,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:44,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:04:44,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,193 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,193 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,193 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,194 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:44,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:44,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:44,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:44,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:44,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,200 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,200 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,200 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,200 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:44,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:44,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:44,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:44,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:44,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,206 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,206 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,206 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,206 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:44,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:44,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:44,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:44,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:44,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,212 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,213 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,213 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,213 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:44,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:44,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:44,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:44,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:04:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,229 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,229 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,230 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,230 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:44,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:44,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:44,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:44,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:44,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:04:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,248 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,248 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,249 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,249 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:04:44,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:44,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:44,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:44,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:04:44,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 11:04:44,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 11:04:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,258 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,258 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,258 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,259 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:44,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:44,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:44,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:44,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:44,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 11:04:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,266 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,267 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,267 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,267 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:44,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:04:44,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:04:44,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:44,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:44,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:44,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:04:44,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952693729] [2020-09-21 11:04:44,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:44,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 11:04:44,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044869079] [2020-09-21 11:04:44,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:04:44,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:44,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:04:44,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:04:44,301 INFO L87 Difference]: Start difference. First operand 317 states and 376 transitions. Second operand 9 states. [2020-09-21 11:04:44,792 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:04:45,905 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 11:04:46,294 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:04:46,615 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:04:47,200 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:04:47,551 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:04:48,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:04:48,501 INFO L93 Difference]: Finished difference Result 984 states and 1306 transitions. [2020-09-21 11:04:48,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 11:04:48,502 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-09-21 11:04:48,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:04:48,507 INFO L225 Difference]: With dead ends: 984 [2020-09-21 11:04:48,507 INFO L226 Difference]: Without dead ends: 691 [2020-09-21 11:04:48,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-21 11:04:48,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-09-21 11:04:48,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 545. [2020-09-21 11:04:48,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-21 11:04:48,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 668 transitions. [2020-09-21 11:04:48,622 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 668 transitions. Word has length 61 [2020-09-21 11:04:48,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:04:48,623 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 668 transitions. [2020-09-21 11:04:48,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:04:48,623 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 668 transitions. [2020-09-21 11:04:48,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-21 11:04:48,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:48,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:04:48,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:04:48,627 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:48,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:48,628 INFO L82 PathProgramCache]: Analyzing trace with hash 148740965, now seen corresponding path program 1 times [2020-09-21 11:04:48,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:48,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687594919] [2020-09-21 11:04:48,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:48,867 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:48,868 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:48,868 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:48,869 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:48,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-21 11:04:48,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:48,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-21 11:04:48,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:48,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:04:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 11:04:48,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:49,224 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:49,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:49,284 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:49,284 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:49,284 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:49,284 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:49,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:49,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:49,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 11:04:49,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:49,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:49,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:49,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:04:49,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:49,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:49,319 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:49,320 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:49,320 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:49,320 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:49,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:49,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:49,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:49,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:49,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:49,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:49,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:49,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:49,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:49,329 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:49,330 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:49,330 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:49,330 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:49,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:49,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:49,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:49,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:49,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:49,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:49,335 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:49,335 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:49,335 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:49,335 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:49,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:49,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:49,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:49,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:49,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:49,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:49,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:49,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:49,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:49,340 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:49,340 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:49,340 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:49,340 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:49,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:49,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:49,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:49,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:49,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:49,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:49,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:49,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:49,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:04:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:49,353 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:49,354 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:49,354 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:49,354 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:49,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:49,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:49,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:49,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:49,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:49,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 11:04:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:49,373 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:49,373 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:49,373 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:49,374 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:49,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:04:49,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:49,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:04:49,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:49,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:04:49,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:04:49,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:49,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:49,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:04:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:49,395 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:49,396 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:49,396 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:49,396 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:49,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:04:49,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:49,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:04:49,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:04:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:04:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:49,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:49,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:04:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:49,442 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:49,443 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:49,443 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:49,443 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:49,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:04:49,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:49,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:04:49,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:49,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:04:49,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:49,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:49,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:49,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:04:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:49,464 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:49,465 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:49,465 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:49,465 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:49,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:49,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:49,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:49,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:49,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:49,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 11:04:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:49,469 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:49,470 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:49,470 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:49,470 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:49,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:49,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:49,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:49,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:49,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:49,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:49,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:49,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:49,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 11:04:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:49,474 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:49,474 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:49,475 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:49,475 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:49,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:49,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:49,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:49,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:49,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:49,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:49,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:49,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:49,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:04:49,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687594919] [2020-09-21 11:04:49,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:49,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 11:04:49,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162282671] [2020-09-21 11:04:49,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:04:49,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:49,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:04:49,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:04:49,495 INFO L87 Difference]: Start difference. First operand 545 states and 668 transitions. Second operand 9 states. [2020-09-21 11:04:50,069 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:04:51,116 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:04:51,380 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 11:04:51,716 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:04:52,051 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:04:53,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:04:53,717 INFO L93 Difference]: Finished difference Result 1841 states and 2583 transitions. [2020-09-21 11:04:53,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 11:04:53,724 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-09-21 11:04:53,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:04:53,737 INFO L225 Difference]: With dead ends: 1841 [2020-09-21 11:04:53,738 INFO L226 Difference]: Without dead ends: 1320 [2020-09-21 11:04:53,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-09-21 11:04:53,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2020-09-21 11:04:53,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1019. [2020-09-21 11:04:53,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019 states. [2020-09-21 11:04:53,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1242 transitions. [2020-09-21 11:04:53,967 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1242 transitions. Word has length 79 [2020-09-21 11:04:53,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:04:53,967 INFO L479 AbstractCegarLoop]: Abstraction has 1019 states and 1242 transitions. [2020-09-21 11:04:53,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:04:53,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1242 transitions. [2020-09-21 11:04:53,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-21 11:04:53,970 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:53,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:04:53,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:04:53,971 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:53,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:53,971 INFO L82 PathProgramCache]: Analyzing trace with hash -2136122490, now seen corresponding path program 1 times [2020-09-21 11:04:53,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:53,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510876568] [2020-09-21 11:04:53,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:54,017 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:54,017 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:54,017 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:54,017 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:54,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-21 11:04:54,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:54,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:04:54,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:54,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:04:54,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-21 11:04:54,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:04:54,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:54,303 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:54,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:54,313 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:54,314 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:54,314 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:54,314 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:54,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:54,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:54,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:54,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:54,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:54,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:54,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:54,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:54,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:54,339 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:54,339 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:54,340 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:54,340 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:54,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:54,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:54,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:54,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:54,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:54,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:54,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:54,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:54,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:54,343 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:54,343 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:54,343 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:54,344 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:54,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:54,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:54,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:04:54,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:54,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:54,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:54,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:54,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:54,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:54,347 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:54,347 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:54,347 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:54,347 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:54,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:54,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:54,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:04:54,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:54,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:54,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:54,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:54,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:54,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:54,351 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:54,351 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:54,352 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:54,352 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:54,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:54,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:54,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:04:54,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:54,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:54,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:54,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:54,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:54,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:04:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:54,360 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:54,361 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:54,361 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:54,361 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:54,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:54,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:54,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:54,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:54,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:54,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:54,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:54,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:54,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 11:04:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:54,380 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:54,380 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:54,380 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:54,381 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:54,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:04:54,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:54,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:04:54,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:04:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:04:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:04:54,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:54,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:04:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:54,419 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:54,420 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:54,421 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:54,421 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:54,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:04:54,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:54,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:04:54,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:04:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:04:54,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:54,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:04:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:54,453 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:54,453 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:54,453 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:54,453 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:54,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:04:54,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:54,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:54,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:54,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:54,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:54,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:54,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:54,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:04:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:54,458 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:54,458 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:54,458 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:54,458 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:54,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:54,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:54,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:04:54,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:54,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:54,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:54,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 11:04:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:54,463 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:54,463 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:54,463 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:54,463 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:54,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:54,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:54,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:54,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:54,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:54,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:54,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:54,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:54,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 11:04:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:54,467 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:54,468 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:54,468 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:54,468 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:54,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:54,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:54,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:04:54,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:54,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:54,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:54,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:54,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:54,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:04:54,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510876568] [2020-09-21 11:04:54,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:54,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 11:04:54,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768809673] [2020-09-21 11:04:54,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:04:54,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:54,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:04:54,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:04:54,486 INFO L87 Difference]: Start difference. First operand 1019 states and 1242 transitions. Second operand 9 states. [2020-09-21 11:04:55,814 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:04:56,144 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 11:04:56,459 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:04:56,697 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:04:57,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:04:57,659 INFO L93 Difference]: Finished difference Result 2328 states and 3059 transitions. [2020-09-21 11:04:57,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 11:04:57,659 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-09-21 11:04:57,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:04:57,670 INFO L225 Difference]: With dead ends: 2328 [2020-09-21 11:04:57,670 INFO L226 Difference]: Without dead ends: 1333 [2020-09-21 11:04:57,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:04:57,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2020-09-21 11:04:57,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1059. [2020-09-21 11:04:57,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1059 states. [2020-09-21 11:04:57,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1282 transitions. [2020-09-21 11:04:57,883 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1282 transitions. Word has length 79 [2020-09-21 11:04:57,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:04:57,884 INFO L479 AbstractCegarLoop]: Abstraction has 1059 states and 1282 transitions. [2020-09-21 11:04:57,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:04:57,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1282 transitions. [2020-09-21 11:04:57,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-21 11:04:57,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:57,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:04:57,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:04:57,887 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:57,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:57,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1649371716, now seen corresponding path program 1 times [2020-09-21 11:04:57,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:57,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634131038] [2020-09-21 11:04:57,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:57,934 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:04:57,934 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -50 [2020-09-21 11:04:57,934 FATAL L256 erpolLogProxyWrapper]: Difference in width: 50 [2020-09-21 11:04:57,934 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:57,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-21 11:04:57,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:57,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:04:57,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:57,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:04:57,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-21 11:04:57,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:57,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:58,189 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:58,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:58,200 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:58,200 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:58,201 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:58,201 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:58,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:58,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:58,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:58,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:58,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:58,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:58,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:58,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:58,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:58,240 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:58,240 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:58,241 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:58,241 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:58,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:58,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:58,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:04:58,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:58,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:58,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:58,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:58,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:58,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:58,245 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:58,246 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:58,246 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:58,246 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:58,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:58,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:58,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:58,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:58,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:58,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:58,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:58,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:58,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:58,249 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:58,249 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:58,250 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:58,250 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:58,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:58,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:58,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:04:58,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:58,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:58,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:58,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:58,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:58,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:58,253 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:58,254 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:58,254 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:58,254 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:58,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:58,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:58,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:04:58,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:58,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:58,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:58,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:58,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:58,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:04:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:58,263 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:58,263 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:58,263 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:58,263 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:58,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:58,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:58,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:04:58,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:58,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:58,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:58,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:58,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:58,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 11:04:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:58,279 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:58,280 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:58,280 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:58,280 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:58,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:04:58,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:58,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:04:58,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:04:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:04:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:58,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:58,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:04:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:58,292 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:58,292 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:58,292 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:58,293 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:58,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:04:58,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:58,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:04:58,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:58,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:04:58,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:04:58,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:58,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:58,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:04:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:58,314 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:58,314 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:58,314 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:58,314 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:58,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:04:58,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:58,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:58,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:58,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:04:58,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:58,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:58,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:58,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:04:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:58,345 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:58,345 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:58,345 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:58,345 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:58,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:58,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:58,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:58,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:58,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:58,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:58,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:58,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 11:04:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:58,352 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:58,352 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:58,352 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:58,352 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:58,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:58,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:58,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:58,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:58,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:58,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:58,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:58,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:58,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 11:04:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:58,356 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:58,356 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:58,357 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:58,357 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:58,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:58,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:58,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:04:58,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:58,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:58,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:58,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:58,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:04:58,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634131038] [2020-09-21 11:04:58,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:58,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:04:58,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349111894] [2020-09-21 11:04:58,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:04:58,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:58,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:04:58,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:04:58,375 INFO L87 Difference]: Start difference. First operand 1059 states and 1282 transitions. Second operand 8 states. [2020-09-21 11:04:59,576 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:04:59,887 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:00,179 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:01,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:05:01,157 INFO L93 Difference]: Finished difference Result 2058 states and 2670 transitions. [2020-09-21 11:05:01,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:05:01,158 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-09-21 11:05:01,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:05:01,164 INFO L225 Difference]: With dead ends: 2058 [2020-09-21 11:05:01,164 INFO L226 Difference]: Without dead ends: 1023 [2020-09-21 11:05:01,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:05:01,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2020-09-21 11:05:01,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 833. [2020-09-21 11:05:01,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2020-09-21 11:05:01,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 980 transitions. [2020-09-21 11:05:01,318 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 980 transitions. Word has length 79 [2020-09-21 11:05:01,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:05:01,319 INFO L479 AbstractCegarLoop]: Abstraction has 833 states and 980 transitions. [2020-09-21 11:05:01,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:05:01,319 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 980 transitions. [2020-09-21 11:05:01,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-21 11:05:01,321 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:05:01,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:05:01,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:05:01,321 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:05:01,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:05:01,322 INFO L82 PathProgramCache]: Analyzing trace with hash -453271351, now seen corresponding path program 1 times [2020-09-21 11:05:01,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:05:01,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106471857] [2020-09-21 11:05:01,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:05:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:05:01,380 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:05:01,380 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:05:01,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:05:01,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:05:01 BoogieIcfgContainer [2020-09-21 11:05:01,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:05:01,413 INFO L168 Benchmark]: Toolchain (without parser) took 34211.90 ms. Allocated memory was 141.0 MB in the beginning and 665.8 MB in the end (delta: 524.8 MB). Free memory was 103.1 MB in the beginning and 271.4 MB in the end (delta: -168.3 MB). Peak memory consumption was 356.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:05:01,413 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 11:05:01,414 INFO L168 Benchmark]: CACSL2BoogieTranslator took 726.98 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.5 MB in the beginning and 174.0 MB in the end (delta: -71.5 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:05:01,415 INFO L168 Benchmark]: Boogie Preprocessor took 117.40 ms. Allocated memory is still 204.5 MB. Free memory was 174.0 MB in the beginning and 170.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:05:01,416 INFO L168 Benchmark]: RCFGBuilder took 3174.99 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 170.0 MB in the beginning and 196.0 MB in the end (delta: -26.0 MB). Peak memory consumption was 82.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:05:01,416 INFO L168 Benchmark]: TraceAbstraction took 30183.55 ms. Allocated memory was 233.3 MB in the beginning and 665.8 MB in the end (delta: 432.5 MB). Free memory was 194.6 MB in the beginning and 271.4 MB in the end (delta: -76.8 MB). Peak memory consumption was 355.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:05:01,419 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 726.98 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.5 MB in the beginning and 174.0 MB in the end (delta: -71.5 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.40 ms. Allocated memory is still 204.5 MB. Free memory was 174.0 MB in the beginning and 170.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3174.99 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 170.0 MB in the beginning and 196.0 MB in the end (delta: -26.0 MB). Peak memory consumption was 82.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30183.55 ms. Allocated memory was 233.3 MB in the beginning and 665.8 MB in the end (delta: 432.5 MB). Free memory was 194.6 MB in the beginning and 271.4 MB in the end (delta: -76.8 MB). Peak memory consumption was 355.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L60] int pumpRunning = 0; [L61] int systemActive = 1; [L239] int waterLevel = 1; [L240] int methaneLevelCritical = 0; [L610] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L833] int cleanupTimeShifts = 4; [L906] int retValue_acc ; [L907] int tmp ; [L911] FCALL select_helpers() [L912] FCALL select_features() [L913] CALL, EXPR valid_product() [L432] int retValue_acc ; [L435] retValue_acc = 1 [L436] return (retValue_acc); [L913] RET, EXPR valid_product() [L913] tmp = valid_product() [L915] COND TRUE \read(tmp) [L917] FCALL setup() [L918] CALL runTest() [L900] CALL test() [L335] int splverifierCounter ; [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L339] int tmp___2 ; [L342] splverifierCounter = 0 [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND TRUE \read(tmp) [L356] CALL waterRise() [L257] COND TRUE waterLevel < 2 [L258] waterLevel = waterLevel + 1 [L356] RET waterRise() [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp___0) [L366] CALL changeMethaneLevel() [L269] COND FALSE !(\read(methaneLevelCritical)) [L272] methaneLevelCritical = 1 [L366] RET changeMethaneLevel() [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND FALSE !(\read(tmp___2)) [L380] tmp___1 = __VERIFIER_nondet_int() [L382] COND FALSE !(\read(tmp___1)) [L391] CALL timeShift() [L68] COND FALSE !(\read(pumpRunning)) [L75] COND TRUE \read(systemActive) [L77] CALL processEnvironment() [L97] int tmp ; [L100] COND TRUE ! pumpRunning [L102] CALL, EXPR isHighWaterLevel() [L194] int retValue_acc ; [L195] int tmp ; [L196] int tmp___0 ; [L200] CALL, EXPR isHighWaterSensorDry() [L319] int retValue_acc ; [L322] COND FALSE !(waterLevel < 2) [L326] retValue_acc = 0 [L327] return (retValue_acc); [L200] RET, EXPR isHighWaterSensorDry() [L200] tmp = isHighWaterSensorDry() [L202] COND FALSE !(\read(tmp)) [L205] tmp___0 = 1 [L207] retValue_acc = tmp___0 [L208] return (retValue_acc); [L102] RET, EXPR isHighWaterLevel() [L102] tmp = isHighWaterLevel() [L104] COND TRUE \read(tmp) [L106] CALL activatePump() [L125] pumpRunning = 1 [L106] RET activatePump() [L77] RET processEnvironment() [L83] CALL __utac_acc__Specification1_spec__1() [L808] int tmp ; [L809] int tmp___0 ; [L813] CALL, EXPR isMethaneLevelCritical() [L278] int retValue_acc ; [L281] retValue_acc = methaneLevelCritical [L282] return (retValue_acc); [L813] RET, EXPR isMethaneLevelCritical() [L813] tmp = isMethaneLevelCritical() [L815] COND TRUE \read(tmp) [L817] CALL, EXPR isPumpRunning() [L149] int retValue_acc ; [L152] retValue_acc = pumpRunning [L153] return (retValue_acc); [L817] RET, EXPR isPumpRunning() [L817] tmp___0 = isPumpRunning() [L819] COND TRUE \read(tmp___0) [L821] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 22.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 834 SDtfs, 1387 SDslu, 887 SDs, 0 SdLazy, 3995 SolverSat, 914 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 245 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1059occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 1126 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 583 NumberOfCodeBlocks, 583 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 492 ConstructedInterpolants, 0 QuantifiedInterpolants, 143632 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...