/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:04:41,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:04:41,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:04:41,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:04:41,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:04:41,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:04:41,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:04:41,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:04:41,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:04:41,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:04:41,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:04:41,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:04:41,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:04:41,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:04:41,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:04:41,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:04:41,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:04:41,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:04:41,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:04:41,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:04:41,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:04:41,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:04:41,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:04:41,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:04:41,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:04:41,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:04:41,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:04:41,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:04:41,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:04:41,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:04:41,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:04:41,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:04:41,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:04:41,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:04:41,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:04:41,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:04:41,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:04:41,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:04:41,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:04:41,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:04:41,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:04:41,978 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 [2020-08-18 16:04:42,001 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:04:42,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:04:42,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:04:42,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:04:42,003 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:04:42,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:04:42,004 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:04:42,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:04:42,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:04:42,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:04:42,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:04:42,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:04:42,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:04:42,005 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:04:42,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:04:42,005 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:04:42,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:04:42,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:04:42,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:04:42,006 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:04:42,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:04:42,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:04:42,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:04:42,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:04:42,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:04:42,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:04:42,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:04:42,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:04:42,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:04:42,012 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 [2020-08-18 16:04:42,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:04:42,324 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:04:42,328 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:04:42,329 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:04:42,330 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:04:42,331 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c [2020-08-18 16:04:42,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cbdd3fd3/9b8ec269257c41d6a7eb46856b3a2d84/FLAGff8534e08 [2020-08-18 16:04:43,014 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:04:43,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c [2020-08-18 16:04:43,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cbdd3fd3/9b8ec269257c41d6a7eb46856b3a2d84/FLAGff8534e08 [2020-08-18 16:04:43,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cbdd3fd3/9b8ec269257c41d6a7eb46856b3a2d84 [2020-08-18 16:04:43,249 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:04:43,251 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:04:43,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:04:43,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:04:43,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:04:43,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:04:43" (1/1) ... [2020-08-18 16:04:43,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:43, skipping insertion in model container [2020-08-18 16:04:43,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:04:43" (1/1) ... [2020-08-18 16:04:43,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:04:43,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:04:43,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:04:43,886 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:04:43,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:04:43,989 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:04:43,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:43 WrapperNode [2020-08-18 16:04:43,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:04:43,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:04:43,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:04:43,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:04:44,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:43" (1/1) ... [2020-08-18 16:04:44,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:43" (1/1) ... [2020-08-18 16:04:44,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:43" (1/1) ... [2020-08-18 16:04:44,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:43" (1/1) ... [2020-08-18 16:04:44,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:43" (1/1) ... [2020-08-18 16:04:44,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:43" (1/1) ... [2020-08-18 16:04:44,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:43" (1/1) ... [2020-08-18 16:04:44,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:04:44,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:04:44,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:04:44,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:04:44,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:43" (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 [2020-08-18 16:04:44,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:04:44,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:04:44,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:04:44,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:04:44,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:04:44,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:04:44,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:04:44,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:04:44,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:04:44,148 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:04:44,148 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:04:44,149 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:04:44,149 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:04:44,149 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:04:44,149 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:04:44,150 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:04:44,150 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:04:44,150 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:04:44,150 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 16:04:44,151 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:04:44,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 16:04:44,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 16:04:44,152 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:04:44,152 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:04:44,152 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:04:44,154 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:04:44,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:04:44,155 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:04:44,155 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:04:44,155 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:04:44,155 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:04:44,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:04:44,156 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:04:44,157 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:04:44,157 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:04:44,157 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:04:44,157 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:04:44,157 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:04:44,157 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:04:44,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:04:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:04:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:04:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:04:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:04:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:04:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:04:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:04:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:04:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:04:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:04:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:04:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:04:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:04:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:04:44,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:04:44,161 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:04:44,161 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:04:44,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:04:44,161 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:04:44,162 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:04:44,162 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:04:44,162 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:04:44,162 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:04:44,162 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:04:44,163 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:04:44,163 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:04:44,163 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:04:44,163 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:04:44,163 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 16:04:44,163 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 16:04:44,164 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:04:44,164 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:04:44,164 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:04:44,164 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:04:44,164 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:04:44,164 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:04:44,164 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:04:44,165 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:04:44,165 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:04:44,165 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 16:04:44,165 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:04:44,165 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:04:44,165 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:04:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:04:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:04:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:04:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:04:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:04:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:04:44,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:04:44,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:04:44,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:04:45,238 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:04:45,238 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:04:45,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:04:45 BoogieIcfgContainer [2020-08-18 16:04:45,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:04:45,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:04:45,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:04:45,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:04:45,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:04:43" (1/3) ... [2020-08-18 16:04:45,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d667eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:04:45, skipping insertion in model container [2020-08-18 16:04:45,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:04:43" (2/3) ... [2020-08-18 16:04:45,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d667eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:04:45, skipping insertion in model container [2020-08-18 16:04:45,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:04:45" (3/3) ... [2020-08-18 16:04:45,253 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product35.cil.c [2020-08-18 16:04:45,263 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:04:45,271 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:04:45,286 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:04:45,313 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:04:45,313 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:04:45,314 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:04:45,314 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:04:45,314 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:04:45,314 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:04:45,314 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:04:45,315 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:04:45,338 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2020-08-18 16:04:45,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 16:04:45,348 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:04:45,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:04:45,350 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:04:45,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:04:45,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1759491915, now seen corresponding path program 1 times [2020-08-18 16:04:45,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:04:45,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568163247] [2020-08-18 16:04:45,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:04:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:46,091 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:04:46,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:04:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:46,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:04:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:46,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:04:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:46,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:04:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:46,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:04:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:46,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:04:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:46,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:04:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:46,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 16:04:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:04:46,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568163247] [2020-08-18 16:04:46,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:04:46,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:04:46,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096330744] [2020-08-18 16:04:46,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:04:46,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:04:46,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:04:46,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:04:46,217 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 4 states. [2020-08-18 16:04:47,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:04:47,156 INFO L93 Difference]: Finished difference Result 269 states and 353 transitions. [2020-08-18 16:04:47,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:04:47,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 16:04:47,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:04:47,174 INFO L225 Difference]: With dead ends: 269 [2020-08-18 16:04:47,175 INFO L226 Difference]: Without dead ends: 151 [2020-08-18 16:04:47,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:04:47,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-18 16:04:47,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 119. [2020-08-18 16:04:47,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-18 16:04:47,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2020-08-18 16:04:47,275 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 51 [2020-08-18 16:04:47,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:04:47,276 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2020-08-18 16:04:47,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:04:47,276 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2020-08-18 16:04:47,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 16:04:47,279 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:04:47,279 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] [2020-08-18 16:04:47,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:04:47,280 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:04:47,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:04:47,281 INFO L82 PathProgramCache]: Analyzing trace with hash -273292015, now seen corresponding path program 1 times [2020-08-18 16:04:47,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:04:47,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539213167] [2020-08-18 16:04:47,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:04:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:47,601 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:04:47,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:04:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:47,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:04:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:47,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:04:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:47,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:04:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:47,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:04:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:47,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:04:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:47,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:04:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:47,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:04:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:47,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:04:47,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539213167] [2020-08-18 16:04:47,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:04:47,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:04:47,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281578131] [2020-08-18 16:04:47,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:04:47,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:04:47,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:04:47,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:04:47,681 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand 5 states. [2020-08-18 16:04:48,153 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:04:48,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:04:48,988 INFO L93 Difference]: Finished difference Result 205 states and 254 transitions. [2020-08-18 16:04:48,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 16:04:48,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 16:04:48,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:04:48,994 INFO L225 Difference]: With dead ends: 205 [2020-08-18 16:04:48,994 INFO L226 Difference]: Without dead ends: 141 [2020-08-18 16:04:48,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:04:48,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-18 16:04:49,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 110. [2020-08-18 16:04:49,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-08-18 16:04:49,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2020-08-18 16:04:49,035 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 52 [2020-08-18 16:04:49,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:04:49,035 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2020-08-18 16:04:49,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:04:49,036 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2020-08-18 16:04:49,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 16:04:49,038 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:04:49,038 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] [2020-08-18 16:04:49,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:04:49,038 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:04:49,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:04:49,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1232114680, now seen corresponding path program 1 times [2020-08-18 16:04:49,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:04:49,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895783558] [2020-08-18 16:04:49,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:04:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:49,396 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:04:49,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:04:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:49,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:04:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:49,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:04:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:49,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:04:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:49,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:04:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:49,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:04:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:49,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:04:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:49,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:04:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:49,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:04:49,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895783558] [2020-08-18 16:04:49,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:04:49,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:04:49,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454722242] [2020-08-18 16:04:49,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:04:49,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:04:49,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:04:49,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:04:49,493 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand 9 states. [2020-08-18 16:04:49,832 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:04:50,120 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:04:50,383 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:04:50,663 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:04:51,416 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:04:52,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:04:52,675 INFO L93 Difference]: Finished difference Result 374 states and 471 transitions. [2020-08-18 16:04:52,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:04:52,680 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 16:04:52,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:04:52,683 INFO L225 Difference]: With dead ends: 374 [2020-08-18 16:04:52,683 INFO L226 Difference]: Without dead ends: 292 [2020-08-18 16:04:52,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:04:52,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-08-18 16:04:52,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 223. [2020-08-18 16:04:52,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-08-18 16:04:52,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 268 transitions. [2020-08-18 16:04:52,759 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 268 transitions. Word has length 56 [2020-08-18 16:04:52,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:04:52,759 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 268 transitions. [2020-08-18 16:04:52,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:04:52,760 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 268 transitions. [2020-08-18 16:04:52,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 16:04:52,762 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:04:52,762 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] [2020-08-18 16:04:52,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:04:52,763 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:04:52,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:04:52,763 INFO L82 PathProgramCache]: Analyzing trace with hash 466387433, now seen corresponding path program 1 times [2020-08-18 16:04:52,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:04:52,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114173039] [2020-08-18 16:04:52,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:04:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:53,079 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:04:53,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:04:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:53,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:04:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:53,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:04:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:53,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:04:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:53,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:04:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:53,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:04:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:53,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:04:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:53,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:04:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:53,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 16:04:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:04:53,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114173039] [2020-08-18 16:04:53,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:04:53,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:04:53,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382759720] [2020-08-18 16:04:53,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:04:53,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:04:53,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:04:53,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:04:53,222 INFO L87 Difference]: Start difference. First operand 223 states and 268 transitions. Second operand 9 states. [2020-08-18 16:04:53,581 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:04:54,706 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:04:55,005 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:04:55,278 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:04:55,515 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:04:56,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:04:56,514 INFO L93 Difference]: Finished difference Result 711 states and 943 transitions. [2020-08-18 16:04:56,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 16:04:56,516 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-18 16:04:56,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:04:56,523 INFO L225 Difference]: With dead ends: 711 [2020-08-18 16:04:56,523 INFO L226 Difference]: Without dead ends: 516 [2020-08-18 16:04:56,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 16:04:56,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-08-18 16:04:56,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 394. [2020-08-18 16:04:56,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-08-18 16:04:56,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 476 transitions. [2020-08-18 16:04:56,632 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 476 transitions. Word has length 62 [2020-08-18 16:04:56,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:04:56,633 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 476 transitions. [2020-08-18 16:04:56,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:04:56,633 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 476 transitions. [2020-08-18 16:04:56,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-18 16:04:56,636 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:04:56,637 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] [2020-08-18 16:04:56,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:04:56,637 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:04:56,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:04:56,637 INFO L82 PathProgramCache]: Analyzing trace with hash -995650491, now seen corresponding path program 1 times [2020-08-18 16:04:56,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:04:56,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152972738] [2020-08-18 16:04:56,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:04:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:56,945 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:04:56,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:04:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:57,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:04:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:57,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:04:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:57,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:04:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:57,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:04:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:57,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:04:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:57,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:04:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:57,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:04:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:57,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 16:04:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:57,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 16:04:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:04:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:04:57,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152972738] [2020-08-18 16:04:57,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:04:57,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 16:04:57,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640902613] [2020-08-18 16:04:57,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:04:57,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:04:57,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:04:57,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:04:57,091 INFO L87 Difference]: Start difference. First operand 394 states and 476 transitions. Second operand 10 states. [2020-08-18 16:04:57,585 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:04:58,746 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:04:59,031 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:04:59,297 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:04:59,873 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:00,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:00,853 INFO L93 Difference]: Finished difference Result 1128 states and 1528 transitions. [2020-08-18 16:05:00,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 16:05:00,854 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-18 16:05:00,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:00,861 INFO L225 Difference]: With dead ends: 1128 [2020-08-18 16:05:00,861 INFO L226 Difference]: Without dead ends: 762 [2020-08-18 16:05:00,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-18 16:05:00,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2020-08-18 16:05:01,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 577. [2020-08-18 16:05:01,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-08-18 16:05:01,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 699 transitions. [2020-08-18 16:05:01,005 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 699 transitions. Word has length 66 [2020-08-18 16:05:01,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:01,006 INFO L479 AbstractCegarLoop]: Abstraction has 577 states and 699 transitions. [2020-08-18 16:05:01,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:05:01,006 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 699 transitions. [2020-08-18 16:05:01,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 16:05:01,009 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:01,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:05:01,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:05:01,009 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:01,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:01,010 INFO L82 PathProgramCache]: Analyzing trace with hash 155563889, now seen corresponding path program 1 times [2020-08-18 16:05:01,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:01,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864551691] [2020-08-18 16:05:01,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:01,341 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:01,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:01,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:01,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:01,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:01,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:01,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:01,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:05:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:01,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:05:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:01,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:01,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:01,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:05:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:01,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 16:05:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:01,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 16:05:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:01,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:05:01,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864551691] [2020-08-18 16:05:01,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:05:01,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 16:05:01,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839050423] [2020-08-18 16:05:01,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:05:01,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:01,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:05:01,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:05:01,499 INFO L87 Difference]: Start difference. First operand 577 states and 699 transitions. Second operand 10 states. [2020-08-18 16:05:01,894 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:02,837 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:03,112 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:05:03,407 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:03,691 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:05,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:05,475 INFO L93 Difference]: Finished difference Result 2076 states and 2977 transitions. [2020-08-18 16:05:05,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 16:05:05,475 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-08-18 16:05:05,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:05,493 INFO L225 Difference]: With dead ends: 2076 [2020-08-18 16:05:05,493 INFO L226 Difference]: Without dead ends: 1527 [2020-08-18 16:05:05,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-18 16:05:05,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2020-08-18 16:05:05,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1103. [2020-08-18 16:05:05,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-08-18 16:05:05,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1340 transitions. [2020-08-18 16:05:05,853 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1340 transitions. Word has length 83 [2020-08-18 16:05:05,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:05,854 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1340 transitions. [2020-08-18 16:05:05,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:05:05,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1340 transitions. [2020-08-18 16:05:05,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 16:05:05,863 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:05,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:05:05,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:05:05,864 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:05,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:05,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1955726480, now seen corresponding path program 1 times [2020-08-18 16:05:05,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:05,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254017622] [2020-08-18 16:05:05,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,172 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:06,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:05:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:05:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:05:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 16:05:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 16:05:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:06,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:05:06,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254017622] [2020-08-18 16:05:06,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:05:06,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 16:05:06,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117989568] [2020-08-18 16:05:06,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:05:06,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:06,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:05:06,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:05:06,347 INFO L87 Difference]: Start difference. First operand 1103 states and 1340 transitions. Second operand 10 states. [2020-08-18 16:05:07,457 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:05:07,728 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:05:07,983 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:08,218 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:09,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:09,374 INFO L93 Difference]: Finished difference Result 2615 states and 3505 transitions. [2020-08-18 16:05:09,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:05:09,375 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-08-18 16:05:09,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:09,387 INFO L225 Difference]: With dead ends: 2615 [2020-08-18 16:05:09,387 INFO L226 Difference]: Without dead ends: 1540 [2020-08-18 16:05:09,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:05:09,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2020-08-18 16:05:09,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1143. [2020-08-18 16:05:09,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1143 states. [2020-08-18 16:05:09,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1380 transitions. [2020-08-18 16:05:09,623 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1380 transitions. Word has length 83 [2020-08-18 16:05:09,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:09,624 INFO L479 AbstractCegarLoop]: Abstraction has 1143 states and 1380 transitions. [2020-08-18 16:05:09,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:05:09,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1380 transitions. [2020-08-18 16:05:09,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 16:05:09,627 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:09,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:05:09,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:05:09,627 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:09,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:09,628 INFO L82 PathProgramCache]: Analyzing trace with hash -569523086, now seen corresponding path program 1 times [2020-08-18 16:05:09,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:09,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195206628] [2020-08-18 16:05:09,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:09,929 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:09,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:09,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:09,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:09,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:09,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:09,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:05:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:05:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:05:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 16:05:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 16:05:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:10,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:05:10,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195206628] [2020-08-18 16:05:10,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:05:10,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:05:10,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360601553] [2020-08-18 16:05:10,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:05:10,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:10,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:05:10,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:05:10,088 INFO L87 Difference]: Start difference. First operand 1143 states and 1380 transitions. Second operand 12 states. [2020-08-18 16:05:10,559 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:10,801 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:11,039 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:11,751 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:11,997 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:12,259 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:05:13,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:13,555 INFO L93 Difference]: Finished difference Result 2319 states and 3065 transitions. [2020-08-18 16:05:13,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:05:13,555 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-08-18 16:05:13,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:13,565 INFO L225 Difference]: With dead ends: 2319 [2020-08-18 16:05:13,565 INFO L226 Difference]: Without dead ends: 1204 [2020-08-18 16:05:13,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 16:05:13,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2020-08-18 16:05:13,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 927. [2020-08-18 16:05:13,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-08-18 16:05:13,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1088 transitions. [2020-08-18 16:05:13,751 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1088 transitions. Word has length 83 [2020-08-18 16:05:13,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:13,752 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1088 transitions. [2020-08-18 16:05:13,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:05:13,752 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1088 transitions. [2020-08-18 16:05:13,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 16:05:13,754 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:13,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:05:13,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:05:13,755 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:13,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:13,755 INFO L82 PathProgramCache]: Analyzing trace with hash 855595353, now seen corresponding path program 1 times [2020-08-18 16:05:13,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:13,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293062981] [2020-08-18 16:05:13,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,040 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:05:14,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:05:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:05:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:05:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:05:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:05:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:05:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:05:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:05:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:05:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:05:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:05:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:05:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 16:05:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 16:05:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:05:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:05:14,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293062981] [2020-08-18 16:05:14,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:05:14,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:05:14,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780977885] [2020-08-18 16:05:14,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:05:14,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:05:14,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:05:14,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:05:14,235 INFO L87 Difference]: Start difference. First operand 927 states and 1088 transitions. Second operand 8 states. [2020-08-18 16:05:14,752 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:05:17,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:05:17,046 INFO L93 Difference]: Finished difference Result 1851 states and 2454 transitions. [2020-08-18 16:05:17,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 16:05:17,047 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-08-18 16:05:17,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:05:17,058 INFO L225 Difference]: With dead ends: 1851 [2020-08-18 16:05:17,059 INFO L226 Difference]: Without dead ends: 1848 [2020-08-18 16:05:17,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-18 16:05:17,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2020-08-18 16:05:17,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1424. [2020-08-18 16:05:17,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2020-08-18 16:05:17,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 1688 transitions. [2020-08-18 16:05:17,368 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 1688 transitions. Word has length 87 [2020-08-18 16:05:17,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:05:17,369 INFO L479 AbstractCegarLoop]: Abstraction has 1424 states and 1688 transitions. [2020-08-18 16:05:17,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:05:17,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 1688 transitions. [2020-08-18 16:05:17,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-18 16:05:17,377 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:05:17,378 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] [2020-08-18 16:05:17,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:05:17,379 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:05:17,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:05:17,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1738865668, now seen corresponding path program 1 times [2020-08-18 16:05:17,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:05:17,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337742977] [2020-08-18 16:05:17,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:05:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:05:17,454 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:05:17,455 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:05:17,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:05:17,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:05:17 BoogieIcfgContainer [2020-08-18 16:05:17,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:05:17,513 INFO L168 Benchmark]: Toolchain (without parser) took 34258.56 ms. Allocated memory was 139.5 MB in the beginning and 669.5 MB in the end (delta: 530.1 MB). Free memory was 101.7 MB in the beginning and 293.1 MB in the end (delta: -191.4 MB). Peak memory consumption was 338.6 MB. Max. memory is 7.1 GB. [2020-08-18 16:05:17,514 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 16:05:17,520 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.82 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 172.5 MB in the end (delta: -71.1 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2020-08-18 16:05:17,522 INFO L168 Benchmark]: Boogie Preprocessor took 90.08 ms. Allocated memory is still 203.4 MB. Free memory was 172.5 MB in the beginning and 167.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-18 16:05:17,523 INFO L168 Benchmark]: RCFGBuilder took 1163.07 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 167.8 MB in the beginning and 198.7 MB in the end (delta: -30.9 MB). Peak memory consumption was 84.3 MB. Max. memory is 7.1 GB. [2020-08-18 16:05:17,526 INFO L168 Benchmark]: TraceAbstraction took 32261.71 ms. Allocated memory was 236.5 MB in the beginning and 669.5 MB in the end (delta: 433.1 MB). Free memory was 198.7 MB in the beginning and 293.1 MB in the end (delta: -94.4 MB). Peak memory consumption was 338.7 MB. Max. memory is 7.1 GB. [2020-08-18 16:05:17,534 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 738.82 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 172.5 MB in the end (delta: -71.1 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.08 ms. Allocated memory is still 203.4 MB. Free memory was 172.5 MB in the beginning and 167.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1163.07 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 167.8 MB in the beginning and 198.7 MB in the end (delta: -30.9 MB). Peak memory consumption was 84.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32261.71 ms. Allocated memory was 236.5 MB in the beginning and 669.5 MB in the end (delta: 433.1 MB). Free memory was 198.7 MB in the beginning and 293.1 MB in the end (delta: -94.4 MB). Peak memory consumption was 338.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 736]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L416] int pumpRunning = 0; [L417] int systemActive = 1; [L655] int methAndRunningLastTime ; [L741] int cleanupTimeShifts = 4; [L839] int waterLevel = 1; [L840] int methaneLevelCritical = 0; [L815] int retValue_acc ; [L816] int tmp ; [L820] FCALL select_helpers() [L821] FCALL select_features() [L822] CALL, EXPR valid_product() [L723] int retValue_acc ; [L726] retValue_acc = 1 [L727] return (retValue_acc); [L822] RET, EXPR valid_product() [L822] tmp = valid_product() [L824] COND TRUE \read(tmp) [L826] FCALL setup() [L827] CALL runTest() [L808] CALL __utac_acc__Specification2_spec__1() [L660] methAndRunningLastTime = 0 [L808] RET __utac_acc__Specification2_spec__1() [L809] CALL test() [L588] int splverifierCounter ; [L589] int tmp ; [L590] int tmp___0 ; [L591] int tmp___1 ; [L592] int tmp___2 ; [L595] splverifierCounter = 0 [L597] COND TRUE 1 [L599] COND TRUE splverifierCounter < 4 [L605] tmp = __VERIFIER_nondet_int() [L607] COND TRUE \read(tmp) [L609] CALL waterRise() [L857] COND TRUE waterLevel < 2 [L858] waterLevel = waterLevel + 1 [L609] RET waterRise() [L615] tmp___0 = __VERIFIER_nondet_int() [L617] COND TRUE \read(tmp___0) [L619] CALL changeMethaneLevel() [L869] COND FALSE !(\read(methaneLevelCritical)) [L872] methaneLevelCritical = 1 [L619] RET changeMethaneLevel() [L625] tmp___2 = __VERIFIER_nondet_int() [L627] COND TRUE \read(tmp___2) [L642] CALL timeShift() [L424] COND FALSE !(\read(pumpRunning)) [L431] COND TRUE \read(systemActive) [L433] CALL processEnvironment() [L453] int tmp ; [L456] COND TRUE ! pumpRunning [L458] CALL, EXPR isHighWaterLevel() [L550] int retValue_acc ; [L551] int tmp ; [L552] int tmp___0 ; [L556] CALL, EXPR isHighWaterSensorDry() [L919] int retValue_acc ; [L922] COND FALSE !(waterLevel < 2) [L926] retValue_acc = 0 [L927] return (retValue_acc); [L556] RET, EXPR isHighWaterSensorDry() [L556] tmp = isHighWaterSensorDry() [L558] COND FALSE !(\read(tmp)) [L561] tmp___0 = 1 [L563] retValue_acc = tmp___0 [L564] return (retValue_acc); [L458] RET, EXPR isHighWaterLevel() [L458] tmp = isHighWaterLevel() [L460] COND TRUE \read(tmp) [L462] CALL activatePump() [L481] pumpRunning = 1 [L462] RET activatePump() [L433] RET processEnvironment() [L439] CALL __utac_acc__Specification2_spec__2() [L665] int tmp ; [L666] int tmp___0 ; [L670] CALL, EXPR isMethaneLevelCritical() [L878] int retValue_acc ; [L881] retValue_acc = methaneLevelCritical [L882] return (retValue_acc); [L670] RET, EXPR isMethaneLevelCritical() [L670] tmp = isMethaneLevelCritical() [L672] COND TRUE \read(tmp) [L674] CALL, EXPR isPumpRunning() [L505] int retValue_acc ; [L508] retValue_acc = pumpRunning [L509] return (retValue_acc); [L674] RET, EXPR isPumpRunning() [L674] tmp___0 = isPumpRunning() [L676] COND TRUE \read(tmp___0) [L677] COND FALSE !(\read(methAndRunningLastTime)) [L682] methAndRunningLastTime = 1 [L439] RET __utac_acc__Specification2_spec__2() [L642] RET timeShift() [L597] COND TRUE 1 [L599] COND TRUE splverifierCounter < 4 [L605] tmp = __VERIFIER_nondet_int() [L607] COND FALSE !(\read(tmp)) [L615] tmp___0 = __VERIFIER_nondet_int() [L617] COND FALSE !(\read(tmp___0)) [L625] tmp___2 = __VERIFIER_nondet_int() [L627] COND TRUE \read(tmp___2) [L642] CALL timeShift() [L424] COND TRUE \read(pumpRunning) [L426] CALL lowerWaterLevel() [L845] COND TRUE waterLevel > 0 [L846] waterLevel = waterLevel - 1 [L426] RET lowerWaterLevel() [L431] COND TRUE \read(systemActive) [L433] CALL processEnvironment() [L453] int tmp ; [L456] COND FALSE !(! pumpRunning) [L471] FCALL processEnvironment__wrappee__base() [L433] RET processEnvironment() [L439] CALL __utac_acc__Specification2_spec__2() [L665] int tmp ; [L666] int tmp___0 ; [L670] CALL, EXPR isMethaneLevelCritical() [L878] int retValue_acc ; [L881] retValue_acc = methaneLevelCritical [L882] return (retValue_acc); [L670] RET, EXPR isMethaneLevelCritical() [L670] tmp = isMethaneLevelCritical() [L672] COND TRUE \read(tmp) [L674] CALL, EXPR isPumpRunning() [L505] int retValue_acc ; [L508] retValue_acc = pumpRunning [L509] return (retValue_acc); [L674] RET, EXPR isPumpRunning() [L674] tmp___0 = isPumpRunning() [L676] COND TRUE \read(tmp___0) [L677] COND TRUE \read(methAndRunningLastTime) [L679] CALL __automaton_fail() [L736] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 226 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.1s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 25.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 916 SDtfs, 2503 SDslu, 1339 SDs, 0 SdLazy, 5866 SolverSat, 1719 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 377 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 10.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1424occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 1961 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 752 NumberOfCodeBlocks, 752 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 614 ConstructedInterpolants, 0 QuantifiedInterpolants, 188498 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...