/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:20:10,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:20:10,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:20:10,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:20:10,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:20:10,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:20:10,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:20:10,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:20:10,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:20:10,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:20:10,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:20:10,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:20:10,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:20:10,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:20:10,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:20:10,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:20:10,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:20:10,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:20:10,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:20:10,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:20:10,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:20:10,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:20:10,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:20:10,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:20:10,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:20:10,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:20:10,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:20:10,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:20:10,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:20:10,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:20:10,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:20:10,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:20:10,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:20:10,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:20:10,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:20:10,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:20:10,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:20:10,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:20:10,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:20:10,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:20:10,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:20:10,761 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 [2020-08-22 05:20:10,805 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:20:10,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:20:10,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:20:10,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:20:10,808 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:20:10,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:20:10,808 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:20:10,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:20:10,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:20:10,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:20:10,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:20:10,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:20:10,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:20:10,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:20:10,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:20:10,811 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:20:10,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:20:10,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:20:10,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:20:10,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:20:10,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:20:10,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:20:10,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:20:10,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:20:10,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:20:10,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:20:10,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:20:10,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:20:10,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:20:10,814 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 -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:20:11,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:20:11,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:20:11,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:20:11,194 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:20:11,194 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:20:11,195 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c [2020-08-22 05:20:11,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7bafdf918/080b3dc5c34844e59a9a66b2271a8576/FLAGcf02407e2 [2020-08-22 05:20:11,792 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:20:11,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c [2020-08-22 05:20:11,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7bafdf918/080b3dc5c34844e59a9a66b2271a8576/FLAGcf02407e2 [2020-08-22 05:20:12,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7bafdf918/080b3dc5c34844e59a9a66b2271a8576 [2020-08-22 05:20:12,096 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:20:12,098 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:20:12,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:20:12,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:20:12,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:20:12,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:20:12" (1/1) ... [2020-08-22 05:20:12,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:12, skipping insertion in model container [2020-08-22 05:20:12,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:20:12" (1/1) ... [2020-08-22 05:20:12,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:20:12,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:20:12,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:20:12,806 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:20:12,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:20:12,913 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:20:12,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:12 WrapperNode [2020-08-22 05:20:12,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:20:12,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:20:12,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:20:12,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:20:12,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:12" (1/1) ... [2020-08-22 05:20:12,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:12" (1/1) ... [2020-08-22 05:20:12,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:12" (1/1) ... [2020-08-22 05:20:12,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:12" (1/1) ... [2020-08-22 05:20:12,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:12" (1/1) ... [2020-08-22 05:20:12,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:12" (1/1) ... [2020-08-22 05:20:13,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:12" (1/1) ... [2020-08-22 05:20:13,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:20:13,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:20:13,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:20:13,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:20:13,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:12" (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 [2020-08-22 05:20:13,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:20:13,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:20:13,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 05:20:13,080 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 05:20:13,081 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 05:20:13,081 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 05:20:13,081 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 05:20:13,081 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:20:13,081 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 05:20:13,082 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 05:20:13,082 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 05:20:13,082 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 05:20:13,088 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 05:20:13,088 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 05:20:13,088 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 05:20:13,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 05:20:13,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 05:20:13,090 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 05:20:13,090 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 05:20:13,090 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 05:20:13,091 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 05:20:13,091 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 05:20:13,091 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 05:20:13,091 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 05:20:13,092 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 05:20:13,092 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 05:20:13,092 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 05:20:13,093 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 05:20:13,093 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 05:20:13,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 05:20:13,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 05:20:13,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 05:20:13,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 05:20:13,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 05:20:13,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 05:20:13,094 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 05:20:13,094 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 05:20:13,094 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 05:20:13,094 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 05:20:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:20:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:20:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 05:20:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 05:20:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 05:20:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 05:20:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 05:20:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 05:20:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 05:20:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 05:20:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 05:20:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 05:20:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 05:20:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 05:20:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 05:20:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:20:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 05:20:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 05:20:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 05:20:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 05:20:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 05:20:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:20:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 05:20:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 05:20:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 05:20:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 05:20:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 05:20:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 05:20:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 05:20:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 05:20:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 05:20:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 05:20:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 05:20:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 05:20:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:20:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:20:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 05:20:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:20:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:20:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:20:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:20:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 05:20:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:20:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 05:20:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 05:20:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:20:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 05:20:13,101 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 05:20:13,101 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 05:20:13,101 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 05:20:13,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:20:13,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:20:13,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:20:14,136 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:20:14,137 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 05:20:14,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:20:14 BoogieIcfgContainer [2020-08-22 05:20:14,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:20:14,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:20:14,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:20:14,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:20:14,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:20:12" (1/3) ... [2020-08-22 05:20:14,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f8b8b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:20:14, skipping insertion in model container [2020-08-22 05:20:14,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:12" (2/3) ... [2020-08-22 05:20:14,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f8b8b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:20:14, skipping insertion in model container [2020-08-22 05:20:14,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:20:14" (3/3) ... [2020-08-22 05:20:14,151 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product38.cil.c [2020-08-22 05:20:14,162 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:20:14,170 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:20:14,184 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:20:14,210 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:20:14,210 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:20:14,210 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:20:14,210 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:20:14,210 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:20:14,211 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:20:14,211 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:20:14,211 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:20:14,233 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2020-08-22 05:20:14,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 05:20:14,244 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:14,245 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] [2020-08-22 05:20:14,245 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:14,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:14,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1463974042, now seen corresponding path program 1 times [2020-08-22 05:20:14,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:14,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915080909] [2020-08-22 05:20:14,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:15,004 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:15,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:15,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:15,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:15,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:15,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:15,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:20:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:15,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:20:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:15,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:20:15,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915080909] [2020-08-22 05:20:15,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:20:15,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 05:20:15,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680661696] [2020-08-22 05:20:15,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 05:20:15,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:15,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 05:20:15,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:20:15,116 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 3 states. [2020-08-22 05:20:16,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:16,217 INFO L93 Difference]: Finished difference Result 302 states and 392 transitions. [2020-08-22 05:20:16,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:20:16,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 05:20:16,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:16,234 INFO L225 Difference]: With dead ends: 302 [2020-08-22 05:20:16,234 INFO L226 Difference]: Without dead ends: 163 [2020-08-22 05:20:16,239 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 [2020-08-22 05:20:16,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-08-22 05:20:16,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 130. [2020-08-22 05:20:16,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-22 05:20:16,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-08-22 05:20:16,356 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 46 [2020-08-22 05:20:16,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:16,357 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-08-22 05:20:16,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 05:20:16,357 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-08-22 05:20:16,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 05:20:16,366 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:16,366 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] [2020-08-22 05:20:16,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:20:16,367 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:16,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:16,368 INFO L82 PathProgramCache]: Analyzing trace with hash 842471544, now seen corresponding path program 1 times [2020-08-22 05:20:16,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:16,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144581392] [2020-08-22 05:20:16,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:16,761 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:16,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:16,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:16,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:16,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:16,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:16,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:20:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:16,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:20:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:20:16,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144581392] [2020-08-22 05:20:16,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:20:16,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:20:16,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255463833] [2020-08-22 05:20:16,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:20:16,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:16,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:20:16,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:20:16,812 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 4 states. [2020-08-22 05:20:17,219 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:18,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:18,075 INFO L93 Difference]: Finished difference Result 231 states and 279 transitions. [2020-08-22 05:20:18,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:20:18,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 05:20:18,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:18,079 INFO L225 Difference]: With dead ends: 231 [2020-08-22 05:20:18,079 INFO L226 Difference]: Without dead ends: 147 [2020-08-22 05:20:18,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:20:18,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-22 05:20:18,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 121. [2020-08-22 05:20:18,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-22 05:20:18,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2020-08-22 05:20:18,117 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 47 [2020-08-22 05:20:18,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:18,118 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2020-08-22 05:20:18,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:20:18,118 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2020-08-22 05:20:18,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 05:20:18,120 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:18,121 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] [2020-08-22 05:20:18,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:20:18,121 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:18,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:18,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1913748360, now seen corresponding path program 1 times [2020-08-22 05:20:18,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:18,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050536506] [2020-08-22 05:20:18,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:18,434 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:18,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:18,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:18,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:18,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:18,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:18,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:20:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:18,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 05:20:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:18,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:20:18,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050536506] [2020-08-22 05:20:18,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:20:18,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:20:18,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065309469] [2020-08-22 05:20:18,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:20:18,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:18,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:20:18,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:20:18,530 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand 8 states. [2020-08-22 05:20:18,869 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:19,203 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:19,463 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:19,698 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:20,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:20,893 INFO L93 Difference]: Finished difference Result 244 states and 297 transitions. [2020-08-22 05:20:20,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 05:20:20,898 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-22 05:20:20,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:20,901 INFO L225 Difference]: With dead ends: 244 [2020-08-22 05:20:20,901 INFO L226 Difference]: Without dead ends: 147 [2020-08-22 05:20:20,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:20:20,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-22 05:20:20,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 121. [2020-08-22 05:20:20,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-22 05:20:20,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 138 transitions. [2020-08-22 05:20:20,936 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 138 transitions. Word has length 52 [2020-08-22 05:20:20,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:20,936 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 138 transitions. [2020-08-22 05:20:20,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:20:20,937 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 138 transitions. [2020-08-22 05:20:20,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 05:20:20,938 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:20,939 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] [2020-08-22 05:20:20,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:20:20,939 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:20,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:20,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1607213040, now seen corresponding path program 1 times [2020-08-22 05:20:20,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:20,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141877878] [2020-08-22 05:20:20,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:21,192 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:21,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:21,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:21,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:21,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:21,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:21,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 05:20:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:21,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:21,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:21,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 05:20:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:21,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 05:20:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:20:21,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141877878] [2020-08-22 05:20:21,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:20:21,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:20:21,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645372640] [2020-08-22 05:20:21,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:20:21,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:21,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:20:21,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:20:21,327 INFO L87 Difference]: Start difference. First operand 121 states and 138 transitions. Second operand 6 states. [2020-08-22 05:20:21,629 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:22,720 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:23,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:23,358 INFO L93 Difference]: Finished difference Result 341 states and 419 transitions. [2020-08-22 05:20:23,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:20:23,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-22 05:20:23,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:23,362 INFO L225 Difference]: With dead ends: 341 [2020-08-22 05:20:23,362 INFO L226 Difference]: Without dead ends: 244 [2020-08-22 05:20:23,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:20:23,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-22 05:20:23,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2020-08-22 05:20:23,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-08-22 05:20:23,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 227 transitions. [2020-08-22 05:20:23,409 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 227 transitions. Word has length 65 [2020-08-22 05:20:23,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:23,409 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 227 transitions. [2020-08-22 05:20:23,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:20:23,410 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 227 transitions. [2020-08-22 05:20:23,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-22 05:20:23,411 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:23,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:20:23,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:20:23,412 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:23,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:23,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1567646189, now seen corresponding path program 1 times [2020-08-22 05:20:23,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:23,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720499120] [2020-08-22 05:20:23,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:23,710 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:23,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:23,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:23,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:23,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:23,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:23,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 05:20:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:23,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:23,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:23,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:23,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:20:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:23,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 05:20:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:23,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 05:20:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:23,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:20:23,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720499120] [2020-08-22 05:20:23,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:20:23,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 05:20:23,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273354015] [2020-08-22 05:20:23,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:20:23,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:23,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:20:23,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:20:23,843 INFO L87 Difference]: Start difference. First operand 201 states and 227 transitions. Second operand 12 states. [2020-08-22 05:20:24,262 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:24,580 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:24,817 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:25,050 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:25,579 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:26,515 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:26,844 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:27,096 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:27,320 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:20:27,569 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:27,842 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:29,010 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:29,361 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:29,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:29,867 INFO L93 Difference]: Finished difference Result 707 states and 910 transitions. [2020-08-22 05:20:29,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 05:20:29,868 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-22 05:20:29,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:29,875 INFO L225 Difference]: With dead ends: 707 [2020-08-22 05:20:29,875 INFO L226 Difference]: Without dead ends: 530 [2020-08-22 05:20:29,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 05:20:29,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-08-22 05:20:29,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 468. [2020-08-22 05:20:29,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-08-22 05:20:29,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 547 transitions. [2020-08-22 05:20:29,987 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 547 transitions. Word has length 79 [2020-08-22 05:20:29,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:29,988 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 547 transitions. [2020-08-22 05:20:29,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:20:29,988 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 547 transitions. [2020-08-22 05:20:29,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-22 05:20:29,992 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:29,993 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:20:29,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:20:29,993 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:29,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:29,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1919635093, now seen corresponding path program 1 times [2020-08-22 05:20:29,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:29,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053204147] [2020-08-22 05:20:29,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,300 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:30,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:20:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:20:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:20:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:20:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 05:20:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 05:20:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 05:20:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 05:20:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 05:20:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 05:20:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-22 05:20:30,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053204147] [2020-08-22 05:20:30,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:20:30,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 05:20:30,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944943982] [2020-08-22 05:20:30,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 05:20:30,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:30,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 05:20:30,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-22 05:20:30,567 INFO L87 Difference]: Start difference. First operand 468 states and 547 transitions. Second operand 13 states. [2020-08-22 05:20:31,132 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:31,737 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:32,308 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:32,579 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 05:20:32,850 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:20:33,101 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:33,354 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:20:33,616 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 05:20:33,922 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:20:34,201 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:20:35,852 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:36,089 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:20:36,324 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:36,557 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:37,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:37,134 INFO L93 Difference]: Finished difference Result 951 states and 1203 transitions. [2020-08-22 05:20:37,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-22 05:20:37,135 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 136 [2020-08-22 05:20:37,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:37,142 INFO L225 Difference]: With dead ends: 951 [2020-08-22 05:20:37,142 INFO L226 Difference]: Without dead ends: 507 [2020-08-22 05:20:37,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 05:20:37,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-08-22 05:20:37,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 440. [2020-08-22 05:20:37,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-08-22 05:20:37,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 518 transitions. [2020-08-22 05:20:37,235 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 518 transitions. Word has length 136 [2020-08-22 05:20:37,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:37,236 INFO L479 AbstractCegarLoop]: Abstraction has 440 states and 518 transitions. [2020-08-22 05:20:37,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 05:20:37,236 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 518 transitions. [2020-08-22 05:20:37,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-22 05:20:37,239 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:37,239 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:20:37,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:20:37,240 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:37,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:37,240 INFO L82 PathProgramCache]: Analyzing trace with hash 529869601, now seen corresponding path program 1 times [2020-08-22 05:20:37,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:37,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258037013] [2020-08-22 05:20:37,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,507 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:37,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:20:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:20:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:20:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 05:20:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 05:20:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 05:20:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 05:20:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 05:20:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:37,730 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 05:20:37,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258037013] [2020-08-22 05:20:37,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:20:37,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 05:20:37,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130983938] [2020-08-22 05:20:37,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:20:37,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:37,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:20:37,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:20:37,733 INFO L87 Difference]: Start difference. First operand 440 states and 518 transitions. Second operand 12 states. [2020-08-22 05:20:38,252 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:38,489 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:38,686 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:39,275 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:39,501 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:39,722 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:40,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:40,590 INFO L93 Difference]: Finished difference Result 803 states and 979 transitions. [2020-08-22 05:20:40,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 05:20:40,593 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-22 05:20:40,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:40,596 INFO L225 Difference]: With dead ends: 803 [2020-08-22 05:20:40,596 INFO L226 Difference]: Without dead ends: 387 [2020-08-22 05:20:40,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 05:20:40,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-08-22 05:20:40,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 361. [2020-08-22 05:20:40,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-22 05:20:40,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 422 transitions. [2020-08-22 05:20:40,694 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 422 transitions. Word has length 128 [2020-08-22 05:20:40,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:40,694 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 422 transitions. [2020-08-22 05:20:40,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:20:40,695 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 422 transitions. [2020-08-22 05:20:40,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-22 05:20:40,699 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:40,699 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:20:40,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:20:40,700 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:40,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:40,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1312911802, now seen corresponding path program 1 times [2020-08-22 05:20:40,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:40,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675305173] [2020-08-22 05:20:40,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:40,984 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:40,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:41,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:41,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:41,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:41,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:41,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:20:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:41,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:20:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:41,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:41,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:41,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:41,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:41,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:20:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:41,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:20:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:41,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:41,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 05:20:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:41,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 05:20:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:41,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:41,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:41,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 05:20:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:41,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 05:20:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:41,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 05:20:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:41,167 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 05:20:41,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675305173] [2020-08-22 05:20:41,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:20:41,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 05:20:41,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526024240] [2020-08-22 05:20:41,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 05:20:41,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:41,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 05:20:41,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-22 05:20:41,170 INFO L87 Difference]: Start difference. First operand 361 states and 422 transitions. Second operand 13 states. [2020-08-22 05:20:41,832 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:42,553 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:44,395 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:44,660 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:44,920 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:45,155 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:20:45,407 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:45,640 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:20:45,863 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:46,105 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:20:46,358 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:20:46,580 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:20:47,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:47,195 INFO L93 Difference]: Finished difference Result 1017 states and 1234 transitions. [2020-08-22 05:20:47,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 05:20:47,195 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 132 [2020-08-22 05:20:47,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:47,201 INFO L225 Difference]: With dead ends: 1017 [2020-08-22 05:20:47,201 INFO L226 Difference]: Without dead ends: 680 [2020-08-22 05:20:47,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2020-08-22 05:20:47,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2020-08-22 05:20:47,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 638. [2020-08-22 05:20:47,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2020-08-22 05:20:47,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 736 transitions. [2020-08-22 05:20:47,369 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 736 transitions. Word has length 132 [2020-08-22 05:20:47,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:47,369 INFO L479 AbstractCegarLoop]: Abstraction has 638 states and 736 transitions. [2020-08-22 05:20:47,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 05:20:47,370 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 736 transitions. [2020-08-22 05:20:47,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-22 05:20:47,372 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:47,372 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:20:47,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 05:20:47,373 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:47,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:47,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1866114282, now seen corresponding path program 1 times [2020-08-22 05:20:47,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:47,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110822942] [2020-08-22 05:20:47,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,685 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:47,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:20:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 05:20:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 05:20:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:20:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:20:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:47,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 05:20:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 05:20:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 05:20:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 05:20:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 05:20:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:47,856 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 05:20:47,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110822942] [2020-08-22 05:20:47,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:20:47,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 05:20:47,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767325846] [2020-08-22 05:20:47,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 05:20:47,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:47,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 05:20:47,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:20:47,865 INFO L87 Difference]: Start difference. First operand 638 states and 736 transitions. Second operand 11 states. [2020-08-22 05:20:48,304 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:50,143 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:50,386 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:50,658 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:50,924 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:51,163 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:51,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:51,709 INFO L93 Difference]: Finished difference Result 764 states and 950 transitions. [2020-08-22 05:20:51,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 05:20:51,709 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-08-22 05:20:51,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:51,716 INFO L225 Difference]: With dead ends: 764 [2020-08-22 05:20:51,716 INFO L226 Difference]: Without dead ends: 761 [2020-08-22 05:20:51,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-22 05:20:51,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2020-08-22 05:20:51,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 638. [2020-08-22 05:20:51,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2020-08-22 05:20:51,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 734 transitions. [2020-08-22 05:20:51,828 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 734 transitions. Word has length 136 [2020-08-22 05:20:51,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:51,829 INFO L479 AbstractCegarLoop]: Abstraction has 638 states and 734 transitions. [2020-08-22 05:20:51,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 05:20:51,829 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 734 transitions. [2020-08-22 05:20:51,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-22 05:20:51,832 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:51,832 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:20:51,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 05:20:51,832 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:51,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:51,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1647665506, now seen corresponding path program 1 times [2020-08-22 05:20:51,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:51,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912222767] [2020-08-22 05:20:51,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,135 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:52,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:20:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:20:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:20:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:20:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 05:20:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 05:20:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 05:20:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 05:20:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 05:20:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:52,359 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 05:20:52,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912222767] [2020-08-22 05:20:52,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:20:52,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 05:20:52,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369058398] [2020-08-22 05:20:52,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:20:52,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:52,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:20:52,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:20:52,362 INFO L87 Difference]: Start difference. First operand 638 states and 734 transitions. Second operand 12 states. [2020-08-22 05:20:52,858 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:53,742 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:54,319 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:20:54,597 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:54,851 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:55,115 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:55,394 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:55,657 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:57,313 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:57,567 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:58,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:58,145 INFO L93 Difference]: Finished difference Result 1512 states and 1864 transitions. [2020-08-22 05:20:58,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 05:20:58,146 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-08-22 05:20:58,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:58,152 INFO L225 Difference]: With dead ends: 1512 [2020-08-22 05:20:58,152 INFO L226 Difference]: Without dead ends: 1024 [2020-08-22 05:20:58,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-22 05:20:58,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-08-22 05:20:58,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 867. [2020-08-22 05:20:58,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-08-22 05:20:58,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1012 transitions. [2020-08-22 05:20:58,326 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1012 transitions. Word has length 136 [2020-08-22 05:20:58,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:58,326 INFO L479 AbstractCegarLoop]: Abstraction has 867 states and 1012 transitions. [2020-08-22 05:20:58,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:20:58,327 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1012 transitions. [2020-08-22 05:20:58,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-22 05:20:58,330 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:58,331 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:20:58,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 05:20:58,331 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:58,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:58,332 INFO L82 PathProgramCache]: Analyzing trace with hash -960638147, now seen corresponding path program 2 times [2020-08-22 05:20:58,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:58,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221601401] [2020-08-22 05:20:58,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,682 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:58,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:20:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:20:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:20:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:20:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 05:20:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 05:20:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:20:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 05:20:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 05:20:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-22 05:20:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 05:20:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:58,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 05:20:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:59,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-22 05:20:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 39 proven. 22 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-08-22 05:20:59,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221601401] [2020-08-22 05:20:59,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:20:59,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 05:20:59,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103212027] [2020-08-22 05:20:59,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 05:20:59,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:59,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 05:20:59,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-22 05:20:59,126 INFO L87 Difference]: Start difference. First operand 867 states and 1012 transitions. Second operand 14 states. [2020-08-22 05:20:59,688 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:00,433 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:01,308 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:01,605 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:01,854 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:02,090 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:02,346 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:02,593 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:03,798 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:04,041 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:04,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:04,901 INFO L93 Difference]: Finished difference Result 2101 states and 2694 transitions. [2020-08-22 05:21:04,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-22 05:21:04,901 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 192 [2020-08-22 05:21:04,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:04,911 INFO L225 Difference]: With dead ends: 2101 [2020-08-22 05:21:04,912 INFO L226 Difference]: Without dead ends: 1384 [2020-08-22 05:21:04,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-22 05:21:04,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2020-08-22 05:21:05,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 865. [2020-08-22 05:21:05,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 865 states. [2020-08-22 05:21:05,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1010 transitions. [2020-08-22 05:21:05,102 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1010 transitions. Word has length 192 [2020-08-22 05:21:05,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:05,103 INFO L479 AbstractCegarLoop]: Abstraction has 865 states and 1010 transitions. [2020-08-22 05:21:05,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 05:21:05,103 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1010 transitions. [2020-08-22 05:21:05,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-08-22 05:21:05,106 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:05,106 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:21:05,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 05:21:05,107 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:05,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:05,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1788025149, now seen corresponding path program 3 times [2020-08-22 05:21:05,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:05,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381587348] [2020-08-22 05:21:05,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 05:21:05,225 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 05:21:05,226 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 05:21:05,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 05:21:05,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:21:05 BoogieIcfgContainer [2020-08-22 05:21:05,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:21:05,289 INFO L168 Benchmark]: Toolchain (without parser) took 53191.53 ms. Allocated memory was 141.6 MB in the beginning and 625.5 MB in the end (delta: 483.9 MB). Free memory was 102.9 MB in the beginning and 566.7 MB in the end (delta: -463.8 MB). Peak memory consumption was 486.8 MB. Max. memory is 7.1 GB. [2020-08-22 05:21:05,289 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 05:21:05,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 815.69 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 102.7 MB in the beginning and 173.6 MB in the end (delta: -70.9 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-08-22 05:21:05,302 INFO L168 Benchmark]: Boogie Preprocessor took 93.06 ms. Allocated memory is still 205.5 MB. Free memory was 173.6 MB in the beginning and 169.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-08-22 05:21:05,303 INFO L168 Benchmark]: RCFGBuilder took 1134.31 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 169.1 MB in the beginning and 191.6 MB in the end (delta: -22.4 MB). Peak memory consumption was 79.3 MB. Max. memory is 7.1 GB. [2020-08-22 05:21:05,303 INFO L168 Benchmark]: TraceAbstraction took 51143.68 ms. Allocated memory was 233.8 MB in the beginning and 625.5 MB in the end (delta: 391.6 MB). Free memory was 191.6 MB in the beginning and 566.7 MB in the end (delta: -375.1 MB). Peak memory consumption was 483.2 MB. Max. memory is 7.1 GB. [2020-08-22 05:21:05,316 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 815.69 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 102.7 MB in the beginning and 173.6 MB in the end (delta: -70.9 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.06 ms. Allocated memory is still 205.5 MB. Free memory was 173.6 MB in the beginning and 169.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1134.31 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 169.1 MB in the beginning and 191.6 MB in the end (delta: -22.4 MB). Peak memory consumption was 79.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 51143.68 ms. Allocated memory was 233.8 MB in the beginning and 625.5 MB in the end (delta: 391.6 MB). Free memory was 191.6 MB in the beginning and 566.7 MB in the end (delta: -375.1 MB). Peak memory consumption was 483.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 247]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L149] int waterLevel = 1; [L150] int methaneLevelCritical = 0; [L349] int pumpRunning = 0; [L350] int systemActive = 1; [L704] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L927] int retValue_acc ; [L930] retValue_acc = 1 [L931] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L281] int splverifierCounter ; [L282] int tmp ; [L283] int tmp___0 ; [L284] int tmp___1 ; [L285] int tmp___2 ; [L288] splverifierCounter = 0 [L290] COND TRUE 1 [L292] COND TRUE splverifierCounter < 4 [L298] tmp = __VERIFIER_nondet_int() [L300] COND TRUE \read(tmp) [L302] CALL waterRise() [L167] COND TRUE waterLevel < 2 [L168] waterLevel = waterLevel + 1 [L302] RET waterRise() [L308] tmp___0 = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp___0)) [L318] tmp___2 = __VERIFIER_nondet_int() [L320] COND FALSE !(\read(tmp___2)) [L326] tmp___1 = __VERIFIER_nondet_int() [L328] COND TRUE \read(tmp___1) [L335] CALL timeShift() [L356] COND FALSE !(\read(pumpRunning)) [L363] COND TRUE \read(systemActive) [L365] CALL processEnvironment() [L411] int tmp ; [L414] COND FALSE !(\read(pumpRunning)) [L429] CALL processEnvironment__wrappee__highWaterSensor() [L385] int tmp ; [L388] COND TRUE ! pumpRunning [L390] CALL, EXPR isHighWaterLevel() [L508] int retValue_acc ; [L509] int tmp ; [L510] int tmp___0 ; [L514] CALL, EXPR isHighWaterSensorDry() [L229] int retValue_acc ; [L232] COND FALSE !(waterLevel < 2) [L236] retValue_acc = 0 [L237] return (retValue_acc); [L514] RET, EXPR isHighWaterSensorDry() [L514] tmp = isHighWaterSensorDry() [L516] COND FALSE !(\read(tmp)) [L519] tmp___0 = 1 [L521] retValue_acc = tmp___0 [L522] return (retValue_acc); [L390] RET, EXPR isHighWaterLevel() [L390] tmp = isHighWaterLevel() [L392] COND TRUE \read(tmp) [L394] CALL activatePump() [L439] pumpRunning = 1 [L394] RET activatePump() [L429] RET processEnvironment__wrappee__highWaterSensor() [L365] RET processEnvironment() [L371] CALL __utac_acc__Specification4_spec__1() [L254] int tmp ; [L255] int tmp___0 ; [L259] CALL, EXPR getWaterLevel() [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); [L259] RET, EXPR getWaterLevel() [L259] tmp = getWaterLevel() [L261] COND FALSE !(tmp == 0) [L371] RET __utac_acc__Specification4_spec__1() [L335] RET timeShift() [L290] COND TRUE 1 [L292] COND TRUE splverifierCounter < 4 [L298] tmp = __VERIFIER_nondet_int() [L300] COND FALSE !(\read(tmp)) [L308] tmp___0 = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp___0)) [L318] tmp___2 = __VERIFIER_nondet_int() [L320] COND FALSE !(\read(tmp___2)) [L326] tmp___1 = __VERIFIER_nondet_int() [L328] COND TRUE \read(tmp___1) [L335] CALL timeShift() [L356] COND TRUE \read(pumpRunning) [L358] CALL lowerWaterLevel() [L155] COND TRUE waterLevel > 0 [L156] waterLevel = waterLevel - 1 [L358] RET lowerWaterLevel() [L363] COND TRUE \read(systemActive) [L365] CALL processEnvironment() [L411] int tmp ; [L414] COND TRUE \read(pumpRunning) [L416] CALL, EXPR isMethaneAlarm() [L452] int retValue_acc ; [L456] CALL, EXPR isMethaneLevelCritical() [L188] int retValue_acc ; [L191] retValue_acc = methaneLevelCritical [L192] return (retValue_acc); [L456] RET, EXPR isMethaneLevelCritical() [L456] retValue_acc = isMethaneLevelCritical() [L458] return (retValue_acc); [L416] RET, EXPR isMethaneAlarm() [L416] tmp = isMethaneAlarm() [L418] COND FALSE !(\read(tmp)) [L424] CALL processEnvironment__wrappee__highWaterSensor() [L385] int tmp ; [L388] COND FALSE !(! pumpRunning) [L403] FCALL processEnvironment__wrappee__base() [L424] RET processEnvironment__wrappee__highWaterSensor() [L365] RET processEnvironment() [L371] CALL __utac_acc__Specification4_spec__1() [L254] int tmp ; [L255] int tmp___0 ; [L259] CALL, EXPR getWaterLevel() [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); [L259] RET, EXPR getWaterLevel() [L259] tmp = getWaterLevel() [L261] COND FALSE !(tmp == 0) [L371] RET __utac_acc__Specification4_spec__1() [L335] RET timeShift() [L290] COND TRUE 1 [L292] COND TRUE splverifierCounter < 4 [L298] tmp = __VERIFIER_nondet_int() [L300] COND FALSE !(\read(tmp)) [L308] tmp___0 = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp___0)) [L318] tmp___2 = __VERIFIER_nondet_int() [L320] COND FALSE !(\read(tmp___2)) [L326] tmp___1 = __VERIFIER_nondet_int() [L328] COND TRUE \read(tmp___1) [L335] CALL timeShift() [L356] COND TRUE \read(pumpRunning) [L358] CALL lowerWaterLevel() [L155] COND TRUE waterLevel > 0 [L156] waterLevel = waterLevel - 1 [L358] RET lowerWaterLevel() [L363] COND TRUE \read(systemActive) [L365] CALL processEnvironment() [L411] int tmp ; [L414] COND TRUE \read(pumpRunning) [L416] CALL, EXPR isMethaneAlarm() [L452] int retValue_acc ; [L456] CALL, EXPR isMethaneLevelCritical() [L188] int retValue_acc ; [L191] retValue_acc = methaneLevelCritical [L192] return (retValue_acc); [L456] RET, EXPR isMethaneLevelCritical() [L456] retValue_acc = isMethaneLevelCritical() [L458] return (retValue_acc); [L416] RET, EXPR isMethaneAlarm() [L416] tmp = isMethaneAlarm() [L418] COND FALSE !(\read(tmp)) [L424] CALL processEnvironment__wrappee__highWaterSensor() [L385] int tmp ; [L388] COND FALSE !(! pumpRunning) [L403] FCALL processEnvironment__wrappee__base() [L424] RET processEnvironment__wrappee__highWaterSensor() [L365] RET processEnvironment() [L371] CALL __utac_acc__Specification4_spec__1() [L254] int tmp ; [L255] int tmp___0 ; [L259] CALL, EXPR getWaterLevel() [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); [L259] RET, EXPR getWaterLevel() [L259] tmp = getWaterLevel() [L261] COND TRUE tmp == 0 [L263] CALL, EXPR isPumpRunning() [L463] int retValue_acc ; [L466] retValue_acc = pumpRunning [L467] return (retValue_acc); [L263] RET, EXPR isPumpRunning() [L263] tmp___0 = isPumpRunning() [L265] COND TRUE \read(tmp___0) [L267] CALL __automaton_fail() [L247] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 229 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 51.0s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 43.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1439 SDtfs, 3500 SDslu, 1981 SDs, 0 SdLazy, 10932 SolverSat, 2503 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 637 GetRequests, 413 SyntacticMatches, 12 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 21.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=867occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 1124 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 1337 NumberOfCodeBlocks, 1337 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1138 ConstructedInterpolants, 0 QuantifiedInterpolants, 455757 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 211/247 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...