/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_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:04:39,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:04:39,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:04:39,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:04:39,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:04:39,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:04:39,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:04:39,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:04:39,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:04:39,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:04:39,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:04:39,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:04:39,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:04:39,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:04:39,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:04:39,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:04:39,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:04:39,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:04:39,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:04:39,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:04:39,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:04:39,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:04:39,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:04:39,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:04:39,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:04:39,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:04:39,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:04:39,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:04:39,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:04:39,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:04:39,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:04:39,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:04:39,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:04:39,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:04:39,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:04:39,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:04:39,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:04:39,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:04:39,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:04:39,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:04:39,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:04:39,170 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 11:04:39,196 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:04:39,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:04:39,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:04:39,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:04:39,198 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:04:39,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:04:39,198 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:04:39,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:04:39,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:04:39,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:04:39,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:04:39,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:04:39,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:04:39,200 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:04:39,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:04:39,200 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:04:39,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:04:39,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:04:39,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:04:39,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:04:39,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:04:39,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:04:39,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:04:39,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:04:39,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:04:39,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:04:39,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:04:39,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:04:39,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:04:39,203 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 11:04:39,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:04:39,698 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:04:39,705 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:04:39,707 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:04:39,708 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:04:39,709 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product40.cil.c [2020-09-21 11:04:39,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70ba45600/5b165ec756594817bc7903adff61fb82/FLAGed3917494 [2020-09-21 11:04:40,460 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:04:40,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product40.cil.c [2020-09-21 11:04:40,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70ba45600/5b165ec756594817bc7903adff61fb82/FLAGed3917494 [2020-09-21 11:04:40,719 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70ba45600/5b165ec756594817bc7903adff61fb82 [2020-09-21 11:04:40,733 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:04:40,739 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:04:40,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:04:40,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:04:40,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:04:40,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:04:40" (1/1) ... [2020-09-21 11:04:40,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b58255d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:40, skipping insertion in model container [2020-09-21 11:04:40,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:04:40" (1/1) ... [2020-09-21 11:04:40,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:04:40,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:04:41,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:04:41,306 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:04:41,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:04:41,441 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:04:41,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:41 WrapperNode [2020-09-21 11:04:41,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:04:41,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:04:41,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:04:41,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:04:41,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:41" (1/1) ... [2020-09-21 11:04:41,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:41" (1/1) ... [2020-09-21 11:04:41,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:41" (1/1) ... [2020-09-21 11:04:41,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:41" (1/1) ... [2020-09-21 11:04:41,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:41" (1/1) ... [2020-09-21 11:04:41,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:41" (1/1) ... [2020-09-21 11:04:41,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:41" (1/1) ... [2020-09-21 11:04:41,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:04:41,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:04:41,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:04:41,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:04:41,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:41" (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 11:04:41,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:04:41,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:04:41,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 11:04:41,665 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 11:04:41,665 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 11:04:41,666 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 11:04:41,666 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 11:04:41,666 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 11:04:41,666 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 11:04:41,666 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 11:04:41,667 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 11:04:41,667 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 11:04:41,667 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 11:04:41,667 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 11:04:41,667 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 11:04:41,667 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 11:04:41,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-21 11:04:41,668 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 11:04:41,668 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 11:04:41,668 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 11:04:41,668 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 11:04:41,669 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:04:41,669 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 11:04:41,669 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 11:04:41,669 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 11:04:41,669 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 11:04:41,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 11:04:41,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 11:04:41,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 11:04:41,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 11:04:41,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 11:04:41,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 11:04:41,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 11:04:41,671 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 11:04:41,671 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 11:04:41,671 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 11:04:41,671 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 11:04:41,671 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 11:04:41,672 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 11:04:41,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 11:04:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:04:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:04:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 11:04:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 11:04:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 11:04:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 11:04:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 11:04:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 11:04:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 11:04:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 11:04:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 11:04:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 11:04:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 11:04:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 11:04:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-21 11:04:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 11:04:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 11:04:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 11:04:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 11:04:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 11:04:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:04:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 11:04:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 11:04:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 11:04:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 11:04:41,676 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 11:04:41,676 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 11:04:41,676 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 11:04:41,676 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 11:04:41,676 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 11:04:41,676 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 11:04:41,676 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 11:04:41,676 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:04:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 11:04:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 11:04:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:04:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:04:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 11:04:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:04:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:04:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:04:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:04:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 11:04:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:04:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 11:04:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 11:04:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:04:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 11:04:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 11:04:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 11:04:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 11:04:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:04:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 11:04:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:04:42,943 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:04:42,944 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 11:04:42,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:04:42 BoogieIcfgContainer [2020-09-21 11:04:42,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:04:42,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:04:42,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:04:42,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:04:42,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:04:40" (1/3) ... [2020-09-21 11:04:42,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1acc267d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:04:42, skipping insertion in model container [2020-09-21 11:04:42,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:04:41" (2/3) ... [2020-09-21 11:04:42,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1acc267d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:04:42, skipping insertion in model container [2020-09-21 11:04:42,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:04:42" (3/3) ... [2020-09-21 11:04:42,960 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product40.cil.c [2020-09-21 11:04:42,972 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:04:42,983 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:04:43,005 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:04:43,037 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:04:43,038 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:04:43,038 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:04:43,038 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:04:43,038 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:04:43,038 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:04:43,038 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:04:43,039 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:04:43,067 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-09-21 11:04:43,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 11:04:43,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:43,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:04:43,080 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:43,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:43,088 INFO L82 PathProgramCache]: Analyzing trace with hash -963613915, now seen corresponding path program 1 times [2020-09-21 11:04:43,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:43,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781422431] [2020-09-21 11:04:43,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:43,437 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:43,438 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:43,438 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:43,438 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:43,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 11:04:43,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:43,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:04:43,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:43,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:43,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 11:04:43,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:43,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:43,896 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:43,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:43,912 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:43,912 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:43,912 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:43,913 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:43,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:43,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:43,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:43,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:43,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:43,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:43,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:43,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:43,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:43,987 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:43,987 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:43,988 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:43,988 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:43,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:43,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:43,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:43,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:43,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:43,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:43,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:43,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:43,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,003 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,004 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,004 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,004 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:44,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:44,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:44,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:44,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:44,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:44,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,013 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,013 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,014 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,014 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:44,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:44,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:44,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:44,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,022 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,022 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,023 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,023 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:44,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:44,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:44,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:44,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:44,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:04:44,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:04:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,032 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,032 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,032 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,033 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:44,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:44,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:44,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:44,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:44,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:44,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:04:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:44,042 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:44,043 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:44,043 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:44,044 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:44,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:44,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:44,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:44,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:44,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:44,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:44,063 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 11:04:44,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781422431] [2020-09-21 11:04:44,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:44,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:04:44,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635807014] [2020-09-21 11:04:44,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:04:44,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:44,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:04:44,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:04:44,102 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-09-21 11:04:45,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:04:45,339 INFO L93 Difference]: Finished difference Result 310 states and 407 transitions. [2020-09-21 11:04:45,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:04:45,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 11:04:45,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:04:45,361 INFO L225 Difference]: With dead ends: 310 [2020-09-21 11:04:45,362 INFO L226 Difference]: Without dead ends: 168 [2020-09-21 11:04:45,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:04:45,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-09-21 11:04:45,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 133. [2020-09-21 11:04:45,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-09-21 11:04:45,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 157 transitions. [2020-09-21 11:04:45,502 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 157 transitions. Word has length 46 [2020-09-21 11:04:45,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:04:45,503 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 157 transitions. [2020-09-21 11:04:45,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:04:45,504 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 157 transitions. [2020-09-21 11:04:45,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 11:04:45,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:45,517 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 11:04:45,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:04:45,523 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:45,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:45,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1539591980, now seen corresponding path program 1 times [2020-09-21 11:04:45,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:45,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514012633] [2020-09-21 11:04:45,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:45,641 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:45,641 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:45,641 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:45,642 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:45,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 11:04:45,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:45,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:04:45,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:45,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:45,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 11:04:45,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:04:45,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:45,999 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:46,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:46,011 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:46,011 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:46,011 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:46,011 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:46,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:46,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:46,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:46,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:46,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:46,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:46,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:46,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:46,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:46,063 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:46,063 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:46,063 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:46,064 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:46,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:46,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:46,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:46,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:46,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:46,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:46,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:46,069 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:46,070 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:46,070 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:46,071 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:46,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:46,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:46,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:04:46,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:46,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:46,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:46,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:46,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:46,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:46,077 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:46,077 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:46,077 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:46,078 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:46,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:46,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:46,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:46,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:46,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:46,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:46,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:46,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:46,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:46,084 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:46,085 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:46,085 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:46,085 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:46,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:46,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:46,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:04:46,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:46,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:46,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:04:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:46,089 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:46,089 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:46,090 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:46,090 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:46,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:46,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:46,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:46,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:46,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:46,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:46,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:46,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 11:04:46,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:04:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:46,102 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:46,102 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:46,102 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:46,103 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:46,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:46,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:46,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:46,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:46,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:46,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:46,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:46,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:46,115 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 11:04:46,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514012633] [2020-09-21 11:04:46,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:46,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:04:46,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035298571] [2020-09-21 11:04:46,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:04:46,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:46,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:04:46,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:04:46,121 INFO L87 Difference]: Start difference. First operand 133 states and 157 transitions. Second operand 4 states. [2020-09-21 11:04:46,584 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:04:47,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:04:47,561 INFO L93 Difference]: Finished difference Result 233 states and 286 transitions. [2020-09-21 11:04:47,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:04:47,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 11:04:47,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:04:47,565 INFO L225 Difference]: With dead ends: 233 [2020-09-21 11:04:47,566 INFO L226 Difference]: Without dead ends: 152 [2020-09-21 11:04:47,571 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 11:04:47,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-21 11:04:47,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 124. [2020-09-21 11:04:47,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-21 11:04:47,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2020-09-21 11:04:47,617 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 47 [2020-09-21 11:04:47,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:04:47,617 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2020-09-21 11:04:47,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:04:47,618 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2020-09-21 11:04:47,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 11:04:47,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:47,620 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 11:04:47,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:04:47,620 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:47,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:47,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1079098286, now seen corresponding path program 1 times [2020-09-21 11:04:47,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:47,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806056172] [2020-09-21 11:04:47,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:48,211 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:04:48,211 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:48,211 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:48,212 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:48,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 11:04:48,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:48,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-09-21 11:04:48,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:48,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:04:48,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:48,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 11:04:48,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:48,527 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:48,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:48,594 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:48,595 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:48,595 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:48,595 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:48,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:48,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:48,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 11:04:48,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:48,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:48,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:04:48,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:48,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:48,636 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:48,636 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:48,636 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:48,637 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:48,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:48,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:48,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:48,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:48,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:48,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:48,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:48,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:48,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:48,642 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:48,642 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:48,642 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:48,642 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:48,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:48,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:48,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:48,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:48,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:48,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:48,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:48,647 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:48,648 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:48,648 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:48,648 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:48,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:48,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:48,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:48,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:48,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:48,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:48,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:48,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:48,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:48,654 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:48,654 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:48,654 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:48,654 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:48,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:48,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:48,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:48,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:48,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:48,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:04:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:48,659 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:48,660 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:48,660 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:48,660 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:48,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:48,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:48,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:48,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:48,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:48,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 11:04:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:48,665 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:48,665 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:48,665 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:48,665 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:48,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:48,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:48,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:48,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:48,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:48,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:48,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:48,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:48,675 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 11:04:48,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806056172] [2020-09-21 11:04:48,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:48,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:04:48,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613030047] [2020-09-21 11:04:48,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:04:48,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:48,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:04:48,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:04:48,677 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand 4 states. [2020-09-21 11:04:49,052 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:04:50,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:04:50,749 INFO L93 Difference]: Finished difference Result 364 states and 451 transitions. [2020-09-21 11:04:50,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:04:50,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-21 11:04:50,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:04:50,755 INFO L225 Difference]: With dead ends: 364 [2020-09-21 11:04:50,755 INFO L226 Difference]: Without dead ends: 264 [2020-09-21 11:04:50,756 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 11:04:50,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-09-21 11:04:50,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 214. [2020-09-21 11:04:50,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-21 11:04:50,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 257 transitions. [2020-09-21 11:04:50,818 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 257 transitions. Word has length 52 [2020-09-21 11:04:50,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:04:50,818 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 257 transitions. [2020-09-21 11:04:50,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:04:50,818 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 257 transitions. [2020-09-21 11:04:50,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 11:04:50,820 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:50,820 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 11:04:50,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:04:50,821 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:50,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:50,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1051584563, now seen corresponding path program 1 times [2020-09-21 11:04:50,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:50,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342176993] [2020-09-21 11:04:50,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:51,128 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:51,128 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:51,129 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:51,129 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:51,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 11:04:51,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:51,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-21 11:04:51,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:51,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 11:04:51,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:51,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 11:04:51,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:51,485 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:51,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:51,551 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:51,552 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:51,552 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:51,552 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:51,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:51,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:51,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-21 11:04:51,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:51,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:51,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:51,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:04:51,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:51,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:51,591 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:51,591 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:51,592 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:51,592 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:51,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:51,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:51,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:51,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:51,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:51,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:51,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:51,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:51,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:51,598 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:51,599 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:51,599 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:51,599 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:51,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:51,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:51,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:51,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:51,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:51,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:51,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:51,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:51,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:51,606 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:51,607 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:51,607 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:51,607 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:51,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:51,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:51,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:51,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:51,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:51,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:51,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:51,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:51,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:51,614 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:51,615 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:51,615 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:51,616 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:51,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:51,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:51,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:51,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:51,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:51,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:51,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:51,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:51,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:04:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:51,643 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:51,643 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:51,644 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:51,644 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:51,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:04:51,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:51,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:51,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:51,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:51,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:51,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:04:51,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:51,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 11:04:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:51,656 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:51,657 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:51,657 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:51,657 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:51,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:51,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:51,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:04:51,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:51,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:04:51,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:51,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:51,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:51,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 11:04:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:51,684 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:51,685 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:51,685 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:51,686 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:51,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:51,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:51,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:51,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:51,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:04:51,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:51,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:04:51,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:51,710 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 11:04:51,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342176993] [2020-09-21 11:04:51,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:51,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:04:51,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444131176] [2020-09-21 11:04:51,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:04:51,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:51,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:04:51,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:04:51,714 INFO L87 Difference]: Start difference. First operand 214 states and 257 transitions. Second operand 8 states. [2020-09-21 11:04:52,218 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:04:53,457 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 11:04:53,909 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:04:54,228 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:04:54,575 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:04:55,177 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:04:56,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:04:56,284 INFO L93 Difference]: Finished difference Result 691 states and 898 transitions. [2020-09-21 11:04:56,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 11:04:56,285 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-09-21 11:04:56,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:04:56,292 INFO L225 Difference]: With dead ends: 691 [2020-09-21 11:04:56,293 INFO L226 Difference]: Without dead ends: 501 [2020-09-21 11:04:56,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 11:04:56,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-09-21 11:04:56,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 389. [2020-09-21 11:04:56,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-09-21 11:04:56,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 472 transitions. [2020-09-21 11:04:56,405 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 472 transitions. Word has length 57 [2020-09-21 11:04:56,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:04:56,405 INFO L479 AbstractCegarLoop]: Abstraction has 389 states and 472 transitions. [2020-09-21 11:04:56,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:04:56,406 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 472 transitions. [2020-09-21 11:04:56,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 11:04:56,408 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:04:56,408 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 11:04:56,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:04:56,409 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:04:56,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:04:56,409 INFO L82 PathProgramCache]: Analyzing trace with hash -450930313, now seen corresponding path program 1 times [2020-09-21 11:04:56,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:04:56,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761106428] [2020-09-21 11:04:56,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:04:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:56,867 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:56,867 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:56,868 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:56,868 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:56,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-21 11:04:56,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:56,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-09-21 11:04:56,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:56,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 11:04:56,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:04:56,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-21 11:04:56,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:57,340 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:04:57,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:04:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:57,420 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:57,420 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:57,420 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:57,420 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:57,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:57,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:57,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-21 11:04:57,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:57,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:57,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:57,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:04:57,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:57,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:04:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:57,467 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:57,468 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:57,468 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:57,468 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:57,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:57,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:57,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:57,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:57,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:57,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:57,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:57,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:04:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:57,477 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:57,477 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:57,477 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:57,478 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:57,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:57,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:57,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:57,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:57,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:57,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:57,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:57,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:04:57,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:04:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:57,483 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:57,483 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:57,484 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:57,484 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:57,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:57,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:57,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:04:57,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:57,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:57,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:57,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:04:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:57,491 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:57,491 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:57,491 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:57,492 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:57,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:04:57,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:57,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:57,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:57,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:57,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:57,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:04:57,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:57,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:04:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:57,510 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:57,510 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:57,511 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:57,511 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:57,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:57,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:57,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:57,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:57,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:57,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:57,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:57,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:57,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:04:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:57,538 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:57,538 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:57,539 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:57,539 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:57,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:04:57,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:57,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:57,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:57,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:57,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:57,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:04:57,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:57,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 11:04:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:57,551 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:57,551 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:57,551 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:57,552 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:57,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:57,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:57,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:04:57,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:57,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:04:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:57,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:57,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 11:04:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:04:57,562 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:04:57,563 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:04:57,563 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:04:57,563 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:04:57,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:04:57,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:04:57,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:04:57,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:04:57,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:04:57,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:04:57,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:04:57,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:04:57,609 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 11:04:57,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761106428] [2020-09-21 11:04:57,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:04:57,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 11:04:57,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213077518] [2020-09-21 11:04:57,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:04:57,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:04:57,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:04:57,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:04:57,614 INFO L87 Difference]: Start difference. First operand 389 states and 472 transitions. Second operand 9 states. [2020-09-21 11:04:58,106 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:04:59,371 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 11:04:59,774 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:05:00,099 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:05:00,846 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:01,170 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:02,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:05:02,399 INFO L93 Difference]: Finished difference Result 1178 states and 1589 transitions. [2020-09-21 11:05:02,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 11:05:02,400 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-09-21 11:05:02,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:05:02,410 INFO L225 Difference]: With dead ends: 1178 [2020-09-21 11:05:02,410 INFO L226 Difference]: Without dead ends: 813 [2020-09-21 11:05:02,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-21 11:05:02,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2020-09-21 11:05:02,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 649. [2020-09-21 11:05:02,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-09-21 11:05:02,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 804 transitions. [2020-09-21 11:05:02,550 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 804 transitions. Word has length 61 [2020-09-21 11:05:02,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:05:02,550 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 804 transitions. [2020-09-21 11:05:02,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:05:02,551 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 804 transitions. [2020-09-21 11:05:02,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-21 11:05:02,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:05:02,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:05:02,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:05:02,554 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:05:02,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:05:02,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1506642599, now seen corresponding path program 1 times [2020-09-21 11:05:02,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:05:02,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551624905] [2020-09-21 11:05:02,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:05:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:02,844 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:02,845 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:02,845 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:02,845 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:02,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-21 11:05:02,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:02,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-21 11:05:02,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:02,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:05:02,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:02,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-21 11:05:02,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:03,131 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:05:03,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:05:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:03,199 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:03,200 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:03,200 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:03,200 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:03,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:03,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:03,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-21 11:05:03,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:03,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:03,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:03,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:05:03,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:03,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:05:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:03,241 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:03,241 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:03,242 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:03,242 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:03,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:03,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:03,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:05:03,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:03,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:03,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:03,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:03,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:03,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:05:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:03,247 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:03,247 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:03,247 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:03,248 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:03,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:03,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:03,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:03,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:03,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:03,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:03,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:05:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:03,252 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:03,253 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:03,253 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:03,253 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:03,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:03,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:03,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:03,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:03,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:03,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:03,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:03,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:03,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:05:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:03,260 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:03,260 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:03,260 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:03,261 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:03,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:03,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:03,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:03,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:03,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:03,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:03,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:03,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:03,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:05:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:03,284 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:03,284 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:03,284 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:03,285 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:03,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:03,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:03,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:05:03,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:03,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:03,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:03,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:03,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:03,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 11:05:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:03,309 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:03,309 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:03,310 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:03,310 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:03,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 11:05:03,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:03,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:05:03,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:03,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:05:03,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:05:03,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:03,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:03,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:05:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:03,342 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:03,343 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:03,343 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:03,343 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:03,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:05:03,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:03,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:05:03,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:05:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:05:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:03,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:03,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:05:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:03,358 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:03,358 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:03,359 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:03,359 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:03,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:05:03,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:03,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:05:03,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:05:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:05:03,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:03,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:03,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:05:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:03,399 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:03,399 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:03,399 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:03,400 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:03,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:05:03,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:03,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:05:03,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:05:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:03,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:03,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:05:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:03,429 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:03,429 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:03,430 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:03,430 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:03,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:03,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:03,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:03,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:03,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:03,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:03,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:03,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:03,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 11:05:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:03,464 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:03,465 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:03,466 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:03,466 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:03,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:03,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:03,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:05:03,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:03,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:03,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 11:05:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:03,473 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:03,477 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:03,478 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:03,478 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:03,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:03,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:03,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:05:03,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:03,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:03,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:03,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:03,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:03,501 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 11:05:03,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551624905] [2020-09-21 11:05:03,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:05:03,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 11:05:03,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197325047] [2020-09-21 11:05:03,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:05:03,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:05:03,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:05:03,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:05:03,505 INFO L87 Difference]: Start difference. First operand 649 states and 804 transitions. Second operand 9 states. [2020-09-21 11:05:04,038 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:05:05,239 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:05:05,585 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 11:05:05,929 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:06,308 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:08,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:05:08,314 INFO L93 Difference]: Finished difference Result 2103 states and 2957 transitions. [2020-09-21 11:05:08,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 11:05:08,315 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-09-21 11:05:08,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:05:08,328 INFO L225 Difference]: With dead ends: 2103 [2020-09-21 11:05:08,329 INFO L226 Difference]: Without dead ends: 1478 [2020-09-21 11:05:08,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-09-21 11:05:08,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2020-09-21 11:05:08,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1151. [2020-09-21 11:05:08,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1151 states. [2020-09-21 11:05:08,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1408 transitions. [2020-09-21 11:05:08,735 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1408 transitions. Word has length 84 [2020-09-21 11:05:08,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:05:08,736 INFO L479 AbstractCegarLoop]: Abstraction has 1151 states and 1408 transitions. [2020-09-21 11:05:08,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:05:08,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1408 transitions. [2020-09-21 11:05:08,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-21 11:05:08,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:05:08,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:05:08,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:05:08,744 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:05:08,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:05:08,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1762832698, now seen corresponding path program 1 times [2020-09-21 11:05:08,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:05:08,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728508032] [2020-09-21 11:05:08,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:05:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:08,858 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:08,858 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:08,858 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:08,859 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:08,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-21 11:05:08,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:08,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:05:08,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:08,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:05:08,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-21 11:05:08,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:05:08,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:09,209 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:05:09,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:05:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:09,218 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:09,219 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:09,219 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:09,219 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:09,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:09,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:09,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:09,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:09,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:09,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:09,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:09,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:05:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:09,252 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:09,252 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:09,252 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:09,252 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:09,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:09,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:09,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:09,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:09,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:09,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:09,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:09,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:09,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:05:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:09,257 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:09,257 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:09,257 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:09,257 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:09,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:09,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:09,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:09,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:09,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:09,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:09,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:05:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:09,262 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:09,262 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:09,262 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:09,262 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:09,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:09,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:09,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:09,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:09,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:09,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:09,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:09,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:09,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:05:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:09,266 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:09,267 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:09,267 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:09,267 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:09,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:09,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:09,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:09,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:09,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:09,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:09,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:09,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:09,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:05:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:09,283 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:09,283 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:09,283 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:09,284 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:09,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:09,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:09,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:09,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:09,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:09,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:09,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:09,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:09,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 11:05:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:09,304 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:09,304 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:09,305 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:09,305 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:09,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 11:05:09,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:09,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:05:09,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:09,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:05:09,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 11:05:09,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:05:09,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:09,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:05:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:09,321 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:09,321 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:09,322 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:09,322 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:09,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:05:09,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:09,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:05:09,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:09,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:05:09,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:05:09,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:05:09,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:09,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:05:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:09,353 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:09,353 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:09,353 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:09,354 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:09,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:05:09,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:09,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:05:09,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:09,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:05:09,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:09,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:05:09,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:09,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:05:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:09,387 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:09,387 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:09,387 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:09,387 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:09,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:05:09,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:09,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:09,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:09,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:09,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:09,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:09,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:09,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:05:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:09,394 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:09,394 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:09,394 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:09,394 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:09,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:09,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:09,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:09,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:09,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:09,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:09,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:09,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:09,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 11:05:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:09,401 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:09,401 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:09,401 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:09,402 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:09,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:09,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:09,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:09,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:09,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:09,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:09,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:09,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:09,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 11:05:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:09,406 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:09,406 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:09,406 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:09,406 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:09,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:09,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:09,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:05:09,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:09,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:09,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:09,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:09,420 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 11:05:09,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728508032] [2020-09-21 11:05:09,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:05:09,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 11:05:09,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258335520] [2020-09-21 11:05:09,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:05:09,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:05:09,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:05:09,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:05:09,427 INFO L87 Difference]: Start difference. First operand 1151 states and 1408 transitions. Second operand 9 states. [2020-09-21 11:05:10,673 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:10,960 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 11:05:11,292 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:11,595 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:12,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:05:12,842 INFO L93 Difference]: Finished difference Result 2605 states and 3430 transitions. [2020-09-21 11:05:12,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 11:05:12,842 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-09-21 11:05:12,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:05:12,859 INFO L225 Difference]: With dead ends: 2605 [2020-09-21 11:05:12,859 INFO L226 Difference]: Without dead ends: 1478 [2020-09-21 11:05:12,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:05:12,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2020-09-21 11:05:13,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1191. [2020-09-21 11:05:13,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1191 states. [2020-09-21 11:05:13,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1448 transitions. [2020-09-21 11:05:13,193 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1448 transitions. Word has length 84 [2020-09-21 11:05:13,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:05:13,194 INFO L479 AbstractCegarLoop]: Abstraction has 1191 states and 1448 transitions. [2020-09-21 11:05:13,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:05:13,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1448 transitions. [2020-09-21 11:05:13,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-21 11:05:13,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:05:13,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:05:13,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:05:13,198 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:05:13,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:05:13,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1785464952, now seen corresponding path program 1 times [2020-09-21 11:05:13,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:05:13,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178199785] [2020-09-21 11:05:13,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:05:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:13,261 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:05:13,261 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -55 [2020-09-21 11:05:13,262 FATAL L256 erpolLogProxyWrapper]: Difference in width: 55 [2020-09-21 11:05:13,262 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:13,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-21 11:05:13,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:13,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:05:13,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:13,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:05:13,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-21 11:05:13,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:13,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:13,508 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:05:13,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:05:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:13,518 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:13,518 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:13,518 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:13,519 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:13,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:13,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:13,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:13,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:13,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:13,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:05:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:13,549 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:13,549 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:13,549 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:13,550 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:13,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:13,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:13,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:13,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:13,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:13,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:05:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:13,553 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:13,554 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:13,554 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:13,554 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:13,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:13,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:13,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:13,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:13,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:13,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:13,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:13,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:13,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:05:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:13,559 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:13,559 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:13,559 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:13,560 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:13,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:13,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:13,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:13,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:13,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:13,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:13,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:13,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:13,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:05:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:13,564 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:13,565 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:13,565 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:13,565 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:13,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:13,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:13,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:13,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:13,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:13,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:13,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:13,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:13,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:05:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:13,575 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:13,575 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:13,576 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:13,576 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:13,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:13,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:13,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:13,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:13,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:13,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:13,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:13,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:13,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 11:05:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:13,595 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:13,595 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:13,595 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:13,595 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:13,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 11:05:13,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:13,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:05:13,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:13,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:05:13,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:05:13,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:13,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:13,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:05:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:13,610 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:13,610 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:13,610 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:13,610 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:13,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:05:13,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:13,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:05:13,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:13,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:05:13,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:05:13,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:13,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:13,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:05:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:13,633 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:13,634 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:13,634 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:13,634 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:13,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:05:13,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:13,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:05:13,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:13,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:05:13,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:05:13,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:13,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:13,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:05:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:13,659 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:13,659 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:13,659 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:13,660 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:13,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:05:13,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:13,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:05:13,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:13,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:05:13,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:13,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:13,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:13,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:05:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:13,680 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:13,680 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:13,682 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:13,682 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:13,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:13,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:13,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:05:13,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:13,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:13,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 11:05:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:13,689 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:13,689 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:13,690 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:13,690 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:13,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:13,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:13,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:13,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:13,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:13,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:13,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:13,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:13,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 11:05:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:13,696 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:13,696 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:13,696 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:13,696 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:13,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:13,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:13,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:13,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:13,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:13,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:13,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:13,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:13,715 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 11:05:13,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178199785] [2020-09-21 11:05:13,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:05:13,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:05:13,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574244232] [2020-09-21 11:05:13,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:05:13,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:05:13,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:05:13,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:05:13,721 INFO L87 Difference]: Start difference. First operand 1191 states and 1448 transitions. Second operand 8 states. [2020-09-21 11:05:14,868 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:15,190 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:15,487 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:16,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:05:16,839 INFO L93 Difference]: Finished difference Result 2327 states and 3039 transitions. [2020-09-21 11:05:16,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:05:16,840 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-09-21 11:05:16,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:05:16,853 INFO L225 Difference]: With dead ends: 2327 [2020-09-21 11:05:16,853 INFO L226 Difference]: Without dead ends: 1160 [2020-09-21 11:05:16,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:05:16,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2020-09-21 11:05:17,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 957. [2020-09-21 11:05:17,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2020-09-21 11:05:17,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1138 transitions. [2020-09-21 11:05:17,104 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1138 transitions. Word has length 84 [2020-09-21 11:05:17,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:05:17,105 INFO L479 AbstractCegarLoop]: Abstraction has 957 states and 1138 transitions. [2020-09-21 11:05:17,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:05:17,105 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1138 transitions. [2020-09-21 11:05:17,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-21 11:05:17,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:05:17,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:05:17,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:05:17,108 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:05:17,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:05:17,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1546032113, now seen corresponding path program 1 times [2020-09-21 11:05:17,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:05:17,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150318256] [2020-09-21 11:05:17,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:05:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:05:17,169 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:05:17,169 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:05:17,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:05:17,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:05:17 BoogieIcfgContainer [2020-09-21 11:05:17,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:05:17,205 INFO L168 Benchmark]: Toolchain (without parser) took 36469.81 ms. Allocated memory was 139.5 MB in the beginning and 781.2 MB in the end (delta: 641.7 MB). Free memory was 101.4 MB in the beginning and 647.2 MB in the end (delta: -545.8 MB). Peak memory consumption was 96.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:05:17,205 INFO L168 Benchmark]: CDTParser took 0.84 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-21 11:05:17,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.11 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 167.9 MB in the end (delta: -67.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:05:17,207 INFO L168 Benchmark]: Boogie Preprocessor took 110.75 ms. Allocated memory is still 202.4 MB. Free memory was 167.9 MB in the beginning and 164.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:05:17,208 INFO L168 Benchmark]: RCFGBuilder took 1396.25 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 164.0 MB in the beginning and 193.9 MB in the end (delta: -29.9 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:05:17,209 INFO L168 Benchmark]: TraceAbstraction took 34251.45 ms. Allocated memory was 235.4 MB in the beginning and 781.2 MB in the end (delta: 545.8 MB). Free memory was 193.9 MB in the beginning and 647.2 MB in the end (delta: -453.3 MB). Peak memory consumption was 92.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:05:17,212 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 702.11 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 167.9 MB in the end (delta: -67.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.75 ms. Allocated memory is still 202.4 MB. Free memory was 167.9 MB in the beginning and 164.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1396.25 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 164.0 MB in the beginning and 193.9 MB in the end (delta: -29.9 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34251.45 ms. Allocated memory was 235.4 MB in the beginning and 781.2 MB in the end (delta: 545.8 MB). Free memory was 193.9 MB in the beginning and 647.2 MB in the end (delta: -453.3 MB). Peak memory consumption was 92.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 490]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L51] int pumpRunning = 0; [L52] int systemActive = 1; [L352] int cleanupTimeShifts = 4; [L664] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L862] int waterLevel = 1; [L863] int methaneLevelCritical = 0; [L428] int retValue_acc ; [L429] int tmp ; [L433] FCALL select_helpers() [L434] FCALL select_features() [L435] CALL, EXPR valid_product() [L477] int retValue_acc ; [L480] retValue_acc = 1 [L481] return (retValue_acc); [L435] RET, EXPR valid_product() [L435] tmp = valid_product() [L437] COND TRUE \read(tmp) [L439] FCALL setup() [L440] CALL runTest() [L419] CALL test() [L257] int splverifierCounter ; [L258] int tmp ; [L259] int tmp___0 ; [L260] int tmp___1 ; [L261] int tmp___2 ; [L264] splverifierCounter = 0 [L266] COND TRUE 1 [L268] COND TRUE splverifierCounter < 4 [L274] tmp = __VERIFIER_nondet_int() [L276] COND TRUE \read(tmp) [L278] CALL waterRise() [L880] COND TRUE waterLevel < 2 [L881] waterLevel = waterLevel + 1 [L278] RET waterRise() [L284] tmp___0 = __VERIFIER_nondet_int() [L286] COND TRUE \read(tmp___0) [L288] CALL changeMethaneLevel() [L892] COND FALSE !(\read(methaneLevelCritical)) [L895] methaneLevelCritical = 1 [L288] RET changeMethaneLevel() [L294] tmp___2 = __VERIFIER_nondet_int() [L296] COND FALSE !(\read(tmp___2)) [L302] tmp___1 = __VERIFIER_nondet_int() [L304] COND FALSE !(\read(tmp___1)) [L313] CALL timeShift() [L59] COND FALSE !(\read(pumpRunning)) [L66] COND TRUE \read(systemActive) [L68] CALL processEnvironment() [L114] int tmp ; [L117] COND FALSE !(\read(pumpRunning)) [L132] CALL processEnvironment__wrappee__highWaterSensor() [L88] int tmp ; [L91] COND TRUE ! pumpRunning [L93] CALL, EXPR isHighWaterLevel() [L211] int retValue_acc ; [L212] int tmp ; [L213] int tmp___0 ; [L217] CALL, EXPR isHighWaterSensorDry() [L942] int retValue_acc ; [L945] COND FALSE !(waterLevel < 2) [L949] retValue_acc = 0 [L950] return (retValue_acc); [L217] RET, EXPR isHighWaterSensorDry() [L217] tmp = isHighWaterSensorDry() [L219] COND FALSE !(\read(tmp)) [L222] tmp___0 = 1 [L224] retValue_acc = tmp___0 [L225] return (retValue_acc); [L93] RET, EXPR isHighWaterLevel() [L93] tmp = isHighWaterLevel() [L95] COND TRUE \read(tmp) [L97] CALL activatePump() [L142] pumpRunning = 1 [L97] RET activatePump() [L132] RET processEnvironment__wrappee__highWaterSensor() [L68] RET processEnvironment() [L74] CALL __utac_acc__Specification1_spec__1() [L327] int tmp ; [L328] int tmp___0 ; [L332] CALL, EXPR isMethaneLevelCritical() [L901] int retValue_acc ; [L904] retValue_acc = methaneLevelCritical [L905] return (retValue_acc); [L332] RET, EXPR isMethaneLevelCritical() [L332] tmp = isMethaneLevelCritical() [L334] COND TRUE \read(tmp) [L336] CALL, EXPR isPumpRunning() [L166] int retValue_acc ; [L169] retValue_acc = pumpRunning [L170] return (retValue_acc); [L336] RET, EXPR isPumpRunning() [L336] tmp___0 = isPumpRunning() [L338] COND TRUE \read(tmp___0) [L340] CALL __automaton_fail() [L490] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 235 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 34.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 25.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 943 SDtfs, 1542 SDslu, 971 SDs, 0 SdLazy, 4511 SolverSat, 1032 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 254 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 10.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1191occurred 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: 1.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 1206 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 603 NumberOfCodeBlocks, 603 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 507 ConstructedInterpolants, 0 QuantifiedInterpolants, 149196 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...