/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:35:38,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:35:38,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:35:38,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:35:38,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:35:38,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:35:38,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:35:38,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:35:38,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:35:38,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:35:38,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:35:38,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:35:38,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:35:38,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:35:38,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:35:38,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:35:38,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:35:38,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:35:38,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:35:38,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:35:38,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:35:38,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:35:38,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:35:38,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:35:38,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:35:38,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:35:38,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:35:38,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:35:38,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:35:38,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:35:38,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:35:38,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:35:38,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:35:38,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:35:38,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:35:38,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:35:38,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:35:38,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:35:38,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:35:38,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:35:38,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:35:38,959 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 22:35:38,996 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:35:38,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:35:38,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:35:38,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:35:38,998 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:35:38,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:35:38,998 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:35:38,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:35:38,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:35:38,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:35:38,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:35:38,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:35:38,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:35:39,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:35:39,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:35:39,002 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:35:39,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:35:39,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:35:39,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:35:39,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:35:39,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:35:39,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:35:39,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:35:39,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:35:39,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:35:39,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:35:39,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:35:39,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:35:39,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:35:39,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:35:39,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:35:39,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:35:39,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:35:39,316 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:35:39,316 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:35:39,317 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c [2020-08-18 22:35:39,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b7061f41/508031addfb54f82ae36e196d2d0f1d5/FLAG8098a85f6 [2020-08-18 22:35:39,825 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:35:39,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product43.cil.c [2020-08-18 22:35:39,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b7061f41/508031addfb54f82ae36e196d2d0f1d5/FLAG8098a85f6 [2020-08-18 22:35:40,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b7061f41/508031addfb54f82ae36e196d2d0f1d5 [2020-08-18 22:35:40,193 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:35:40,194 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:35:40,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:35:40,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:35:40,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:35:40,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:35:40" (1/1) ... [2020-08-18 22:35:40,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17a1b9fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:40, skipping insertion in model container [2020-08-18 22:35:40,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:35:40" (1/1) ... [2020-08-18 22:35:40,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:35:40,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:35:40,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:35:40,772 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:35:40,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:35:40,892 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:35:40,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:40 WrapperNode [2020-08-18 22:35:40,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:35:40,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:35:40,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:35:40,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:35:40,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:40" (1/1) ... [2020-08-18 22:35:40,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:40" (1/1) ... [2020-08-18 22:35:40,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:40" (1/1) ... [2020-08-18 22:35:40,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:40" (1/1) ... [2020-08-18 22:35:41,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:40" (1/1) ... [2020-08-18 22:35:41,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:40" (1/1) ... [2020-08-18 22:35:41,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:40" (1/1) ... [2020-08-18 22:35:41,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:35:41,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:35:41,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:35:41,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:35:41,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:40" (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 22:35:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:35:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:35:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 22:35:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 22:35:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 22:35:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 22:35:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 22:35:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 22:35:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 22:35:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 22:35:41,158 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 22:35:41,159 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 22:35:41,159 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 22:35:41,159 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 22:35:41,159 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 22:35:41,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 22:35:41,160 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 22:35:41,161 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 22:35:41,161 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 22:35:41,161 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 22:35:41,161 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:35:41,161 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 22:35:41,161 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 22:35:41,162 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 22:35:41,162 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 22:35:41,163 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 22:35:41,163 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 22:35:41,163 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 22:35:41,163 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 22:35:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 22:35:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 22:35:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 22:35:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 22:35:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 22:35:41,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 22:35:41,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 22:35:41,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 22:35:41,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 22:35:41,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 22:35:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:35:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:35:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 22:35:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 22:35:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 22:35:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 22:35:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 22:35:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 22:35:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 22:35:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 22:35:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 22:35:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 22:35:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 22:35:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 22:35:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 22:35:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 22:35:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 22:35:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 22:35:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 22:35:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 22:35:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 22:35:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 22:35:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 22:35:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:35:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 22:35:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 22:35:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 22:35:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 22:35:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 22:35:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 22:35:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 22:35:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:35:41,172 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 22:35:41,173 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 22:35:41,173 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 22:35:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:35:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 22:35:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 22:35:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:35:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 22:35:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:35:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 22:35:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 22:35:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:35:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 22:35:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 22:35:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:35:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 22:35:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 22:35:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 22:35:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:35:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 22:35:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:35:42,304 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:35:42,304 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 22:35:42,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:35:42 BoogieIcfgContainer [2020-08-18 22:35:42,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:35:42,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:35:42,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:35:42,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:35:42,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:35:40" (1/3) ... [2020-08-18 22:35:42,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c83b123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:35:42, skipping insertion in model container [2020-08-18 22:35:42,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:35:40" (2/3) ... [2020-08-18 22:35:42,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c83b123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:35:42, skipping insertion in model container [2020-08-18 22:35:42,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:35:42" (3/3) ... [2020-08-18 22:35:42,325 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product43.cil.c [2020-08-18 22:35:42,336 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:35:42,347 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:35:42,363 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:35:42,399 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:35:42,399 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:35:42,399 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:35:42,399 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:35:42,400 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:35:42,400 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:35:42,400 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:35:42,400 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:35:42,429 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-08-18 22:35:42,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 22:35:42,444 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:42,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:35:42,446 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:42,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:42,453 INFO L82 PathProgramCache]: Analyzing trace with hash 104665002, now seen corresponding path program 1 times [2020-08-18 22:35:42,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:42,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963666164] [2020-08-18 22:35:42,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,123 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:43,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:35:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:35:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:35:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:35:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:35:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:35:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:43,253 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 22:35:43,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963666164] [2020-08-18 22:35:43,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:35:43,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 22:35:43,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423724526] [2020-08-18 22:35:43,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 22:35:43,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:35:43,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 22:35:43,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:35:43,280 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2020-08-18 22:35:44,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:35:44,398 INFO L93 Difference]: Finished difference Result 301 states and 388 transitions. [2020-08-18 22:35:44,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:35:44,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 22:35:44,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:35:44,414 INFO L225 Difference]: With dead ends: 301 [2020-08-18 22:35:44,415 INFO L226 Difference]: Without dead ends: 163 [2020-08-18 22:35:44,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:35:44,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-08-18 22:35:44,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 129. [2020-08-18 22:35:44,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-18 22:35:44,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2020-08-18 22:35:44,526 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 46 [2020-08-18 22:35:44,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:35:44,527 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2020-08-18 22:35:44,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 22:35:44,527 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2020-08-18 22:35:44,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 22:35:44,532 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:44,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:35:44,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:35:44,533 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:44,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:44,534 INFO L82 PathProgramCache]: Analyzing trace with hash 149584290, now seen corresponding path program 1 times [2020-08-18 22:35:44,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:44,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302311265] [2020-08-18 22:35:44,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:44,927 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:44,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:44,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:35:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:44,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:35:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:44,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:35:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:44,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:35:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:44,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:35:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:44,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 22:35:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:44,968 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 22:35:44,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302311265] [2020-08-18 22:35:44,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:35:44,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:35:44,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574848820] [2020-08-18 22:35:44,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:35:44,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:35:44,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:35:44,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:35:44,972 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand 4 states. [2020-08-18 22:35:45,405 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:35:46,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:35:46,163 INFO L93 Difference]: Finished difference Result 225 states and 269 transitions. [2020-08-18 22:35:46,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 22:35:46,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 22:35:46,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:35:46,166 INFO L225 Difference]: With dead ends: 225 [2020-08-18 22:35:46,167 INFO L226 Difference]: Without dead ends: 147 [2020-08-18 22:35:46,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:35:46,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-18 22:35:46,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 120. [2020-08-18 22:35:46,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-18 22:35:46,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 137 transitions. [2020-08-18 22:35:46,208 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 137 transitions. Word has length 47 [2020-08-18 22:35:46,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:35:46,208 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 137 transitions. [2020-08-18 22:35:46,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:35:46,209 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 137 transitions. [2020-08-18 22:35:46,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 22:35:46,211 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:46,211 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 22:35:46,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:35:46,211 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:46,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:46,212 INFO L82 PathProgramCache]: Analyzing trace with hash 964261252, now seen corresponding path program 1 times [2020-08-18 22:35:46,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:46,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740411746] [2020-08-18 22:35:46,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:46,525 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:46,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:46,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:35:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:46,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:35:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:46,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:35:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:46,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:35:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:46,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:35:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:46,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:35:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:46,630 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 22:35:46,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740411746] [2020-08-18 22:35:46,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:35:46,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:35:46,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521258303] [2020-08-18 22:35:46,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:35:46,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:35:46,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:35:46,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:35:46,634 INFO L87 Difference]: Start difference. First operand 120 states and 137 transitions. Second operand 8 states. [2020-08-18 22:35:47,031 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:35:47,339 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:47,587 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:47,830 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:48,592 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:35:50,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:35:50,116 INFO L93 Difference]: Finished difference Result 412 states and 501 transitions. [2020-08-18 22:35:50,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 22:35:50,117 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 22:35:50,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:35:50,122 INFO L225 Difference]: With dead ends: 412 [2020-08-18 22:35:50,122 INFO L226 Difference]: Without dead ends: 316 [2020-08-18 22:35:50,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 22:35:50,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-08-18 22:35:50,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 246. [2020-08-18 22:35:50,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-08-18 22:35:50,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 290 transitions. [2020-08-18 22:35:50,195 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 290 transitions. Word has length 51 [2020-08-18 22:35:50,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:35:50,195 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 290 transitions. [2020-08-18 22:35:50,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:35:50,195 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 290 transitions. [2020-08-18 22:35:50,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 22:35:50,197 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:50,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:35:50,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:35:50,198 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:50,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:50,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1270230841, now seen corresponding path program 1 times [2020-08-18 22:35:50,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:50,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245795889] [2020-08-18 22:35:50,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:50,560 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:50,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:50,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:35:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:50,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:35:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:50,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:35:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:50,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:35:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:50,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:35:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:50,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:35:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:50,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 22:35:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:50,671 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 22:35:50,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245795889] [2020-08-18 22:35:50,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:35:50,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 22:35:50,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77515608] [2020-08-18 22:35:50,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:35:50,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:35:50,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:35:50,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:35:50,674 INFO L87 Difference]: Start difference. First operand 246 states and 290 transitions. Second operand 12 states. [2020-08-18 22:35:51,119 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:35:51,424 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:51,692 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:51,922 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:52,466 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:35:53,255 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:53,604 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:35:53,892 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:35:54,156 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:35:54,385 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:35:54,725 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:35:55,019 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:35:55,252 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:35:56,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:35:56,952 INFO L93 Difference]: Finished difference Result 993 states and 1338 transitions. [2020-08-18 22:35:56,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 22:35:56,953 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-18 22:35:56,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:35:56,961 INFO L225 Difference]: With dead ends: 993 [2020-08-18 22:35:56,961 INFO L226 Difference]: Without dead ends: 771 [2020-08-18 22:35:56,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 22:35:56,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2020-08-18 22:35:57,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 678. [2020-08-18 22:35:57,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-18 22:35:57,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 836 transitions. [2020-08-18 22:35:57,126 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 836 transitions. Word has length 57 [2020-08-18 22:35:57,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:35:57,126 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 836 transitions. [2020-08-18 22:35:57,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:35:57,127 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 836 transitions. [2020-08-18 22:35:57,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 22:35:57,131 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:57,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:35:57,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:35:57,131 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:57,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:57,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1043234783, now seen corresponding path program 1 times [2020-08-18 22:35:57,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:57,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173883261] [2020-08-18 22:35:57,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:57,388 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:57,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:57,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:35:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:57,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:35:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:57,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:35:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:57,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:35:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:57,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:35:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:57,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:35:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:57,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 22:35:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:57,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 22:35:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:57,469 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 22:35:57,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173883261] [2020-08-18 22:35:57,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:35:57,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 22:35:57,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325995738] [2020-08-18 22:35:57,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 22:35:57,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:35:57,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 22:35:57,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 22:35:57,473 INFO L87 Difference]: Start difference. First operand 678 states and 836 transitions. Second operand 6 states. [2020-08-18 22:35:57,749 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:35:59,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:35:59,279 INFO L93 Difference]: Finished difference Result 1641 states and 2151 transitions. [2020-08-18 22:35:59,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 22:35:59,281 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-18 22:35:59,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:35:59,287 INFO L225 Difference]: With dead ends: 1641 [2020-08-18 22:35:59,288 INFO L226 Difference]: Without dead ends: 987 [2020-08-18 22:35:59,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:35:59,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-18 22:35:59,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 924. [2020-08-18 22:35:59,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-08-18 22:35:59,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1148 transitions. [2020-08-18 22:35:59,502 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1148 transitions. Word has length 61 [2020-08-18 22:35:59,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:35:59,503 INFO L479 AbstractCegarLoop]: Abstraction has 924 states and 1148 transitions. [2020-08-18 22:35:59,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 22:35:59,503 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1148 transitions. [2020-08-18 22:35:59,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 22:35:59,507 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:35:59,507 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:35:59,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:35:59,508 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:35:59,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:35:59,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1818048574, now seen corresponding path program 1 times [2020-08-18 22:35:59,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:35:59,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956726959] [2020-08-18 22:35:59,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:35:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:59,811 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:35:59,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:35:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:59,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:35:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:59,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:35:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:59,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:35:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:59,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:35:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:59,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:35:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:59,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:35:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:59,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 22:35:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:59,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:35:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:59,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:35:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:59,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 22:35:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:59,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 22:35:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:59,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 22:35:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:35:59,967 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 22:35:59,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956726959] [2020-08-18 22:35:59,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:35:59,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 22:35:59,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198465272] [2020-08-18 22:35:59,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:35:59,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:35:59,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:35:59,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:35:59,973 INFO L87 Difference]: Start difference. First operand 924 states and 1148 transitions. Second operand 10 states. [2020-08-18 22:36:00,917 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 22:36:01,451 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:03,506 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:04,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:04,933 INFO L93 Difference]: Finished difference Result 1747 states and 2251 transitions. [2020-08-18 22:36:04,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 22:36:04,934 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 22:36:04,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:04,941 INFO L225 Difference]: With dead ends: 1747 [2020-08-18 22:36:04,941 INFO L226 Difference]: Without dead ends: 1110 [2020-08-18 22:36:04,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-18 22:36:04,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2020-08-18 22:36:05,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1031. [2020-08-18 22:36:05,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2020-08-18 22:36:05,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1260 transitions. [2020-08-18 22:36:05,179 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1260 transitions. Word has length 88 [2020-08-18 22:36:05,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:05,182 INFO L479 AbstractCegarLoop]: Abstraction has 1031 states and 1260 transitions. [2020-08-18 22:36:05,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:36:05,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1260 transitions. [2020-08-18 22:36:05,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-18 22:36:05,195 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:05,196 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:05,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:36:05,197 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:05,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:05,198 INFO L82 PathProgramCache]: Analyzing trace with hash 2006328465, now seen corresponding path program 1 times [2020-08-18 22:36:05,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:05,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068319193] [2020-08-18 22:36:05,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,508 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:05,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:36:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:36:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 22:36:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 22:36:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 22:36:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 22:36:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 22:36:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 22:36:05,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068319193] [2020-08-18 22:36:05,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:36:05,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 22:36:05,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924973227] [2020-08-18 22:36:05,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:36:05,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:05,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:36:05,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:36:05,716 INFO L87 Difference]: Start difference. First operand 1031 states and 1260 transitions. Second operand 10 states. [2020-08-18 22:36:06,600 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:06,894 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:36:07,155 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:07,405 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:08,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:08,433 INFO L93 Difference]: Finished difference Result 2179 states and 2840 transitions. [2020-08-18 22:36:08,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 22:36:08,434 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 128 [2020-08-18 22:36:08,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:08,441 INFO L225 Difference]: With dead ends: 2179 [2020-08-18 22:36:08,441 INFO L226 Difference]: Without dead ends: 1172 [2020-08-18 22:36:08,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 22:36:08,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2020-08-18 22:36:08,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1061. [2020-08-18 22:36:08,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2020-08-18 22:36:08,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1294 transitions. [2020-08-18 22:36:08,679 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1294 transitions. Word has length 128 [2020-08-18 22:36:08,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:08,680 INFO L479 AbstractCegarLoop]: Abstraction has 1061 states and 1294 transitions. [2020-08-18 22:36:08,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:36:08,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1294 transitions. [2020-08-18 22:36:08,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-18 22:36:08,684 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:08,684 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:08,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 22:36:08,685 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:08,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:08,685 INFO L82 PathProgramCache]: Analyzing trace with hash -721880881, now seen corresponding path program 1 times [2020-08-18 22:36:08,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:08,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068118968] [2020-08-18 22:36:08,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:08,981 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:08,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:08,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:08,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:08,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:36:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:36:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 22:36:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 22:36:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 22:36:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 22:36:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 22:36:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:09,145 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 22:36:09,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068118968] [2020-08-18 22:36:09,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:36:09,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 22:36:09,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258137567] [2020-08-18 22:36:09,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:36:09,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:09,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:36:09,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:36:09,148 INFO L87 Difference]: Start difference. First operand 1061 states and 1294 transitions. Second operand 12 states. [2020-08-18 22:36:09,750 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:09,999 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:10,212 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:10,790 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:11,032 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:11,290 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:36:12,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:12,334 INFO L93 Difference]: Finished difference Result 1923 states and 2415 transitions. [2020-08-18 22:36:12,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 22:36:12,335 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-18 22:36:12,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:12,341 INFO L225 Difference]: With dead ends: 1923 [2020-08-18 22:36:12,341 INFO L226 Difference]: Without dead ends: 886 [2020-08-18 22:36:12,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 22:36:12,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2020-08-18 22:36:12,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 836. [2020-08-18 22:36:12,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-08-18 22:36:12,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1009 transitions. [2020-08-18 22:36:12,534 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1009 transitions. Word has length 128 [2020-08-18 22:36:12,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:12,535 INFO L479 AbstractCegarLoop]: Abstraction has 836 states and 1009 transitions. [2020-08-18 22:36:12,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:36:12,535 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1009 transitions. [2020-08-18 22:36:12,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-18 22:36:12,539 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:12,539 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:36:12,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 22:36:12,539 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:12,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:12,540 INFO L82 PathProgramCache]: Analyzing trace with hash 315789474, now seen corresponding path program 1 times [2020-08-18 22:36:12,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:12,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958089665] [2020-08-18 22:36:12,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,824 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:36:12,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:36:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:36:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:36:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:36:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:36:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 22:36:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:36:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:36:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:36:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:36:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 22:36:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 22:36:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:36:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 22:36:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:12,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 22:36:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:36:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 22:36:13,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958089665] [2020-08-18 22:36:13,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:36:13,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 22:36:13,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837361692] [2020-08-18 22:36:13,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:36:13,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:36:13,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:36:13,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:36:13,013 INFO L87 Difference]: Start difference. First operand 836 states and 1009 transitions. Second operand 12 states. [2020-08-18 22:36:13,621 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:14,446 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:14,984 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:15,234 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:15,470 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:15,723 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:36:16,023 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:36:16,284 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:36:17,642 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:36:18,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:36:18,479 INFO L93 Difference]: Finished difference Result 1991 states and 2602 transitions. [2020-08-18 22:36:18,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 22:36:18,480 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-18 22:36:18,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:36:18,488 INFO L225 Difference]: With dead ends: 1991 [2020-08-18 22:36:18,489 INFO L226 Difference]: Without dead ends: 1324 [2020-08-18 22:36:18,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=240, Invalid=572, Unknown=0, NotChecked=0, Total=812 [2020-08-18 22:36:18,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2020-08-18 22:36:18,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1102. [2020-08-18 22:36:18,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-18 22:36:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1352 transitions. [2020-08-18 22:36:18,696 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1352 transitions. Word has length 128 [2020-08-18 22:36:18,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:36:18,697 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1352 transitions. [2020-08-18 22:36:18,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:36:18,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1352 transitions. [2020-08-18 22:36:18,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-18 22:36:18,703 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:36:18,703 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-18 22:36:18,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 22:36:18,703 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:36:18,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:36:18,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1874994186, now seen corresponding path program 2 times [2020-08-18 22:36:18,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:36:18,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037217198] [2020-08-18 22:36:18,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:36:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:36:18,780 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:36:18,780 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:36:18,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 22:36:18,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:36:18 BoogieIcfgContainer [2020-08-18 22:36:18,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:36:18,834 INFO L168 Benchmark]: Toolchain (without parser) took 38636.84 ms. Allocated memory was 148.4 MB in the beginning and 547.4 MB in the end (delta: 399.0 MB). Free memory was 102.3 MB in the beginning and 212.8 MB in the end (delta: -110.5 MB). Peak memory consumption was 288.5 MB. Max. memory is 7.1 GB. [2020-08-18 22:36:18,838 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 22:36:18,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.63 ms. Allocated memory was 148.4 MB in the beginning and 209.2 MB in the end (delta: 60.8 MB). Free memory was 102.1 MB in the beginning and 177.1 MB in the end (delta: -75.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-08-18 22:36:18,843 INFO L168 Benchmark]: Boogie Preprocessor took 174.87 ms. Allocated memory is still 209.2 MB. Free memory was 177.1 MB in the beginning and 173.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-18 22:36:18,843 INFO L168 Benchmark]: RCFGBuilder took 1243.63 ms. Allocated memory was 209.2 MB in the beginning and 230.7 MB in the end (delta: 21.5 MB). Free memory was 173.2 MB in the beginning and 188.9 MB in the end (delta: -15.7 MB). Peak memory consumption was 80.0 MB. Max. memory is 7.1 GB. [2020-08-18 22:36:18,846 INFO L168 Benchmark]: TraceAbstraction took 36512.19 ms. Allocated memory was 230.7 MB in the beginning and 547.4 MB in the end (delta: 316.7 MB). Free memory was 188.9 MB in the beginning and 212.8 MB in the end (delta: -23.9 MB). Peak memory consumption was 292.8 MB. Max. memory is 7.1 GB. [2020-08-18 22:36:18,852 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 697.63 ms. Allocated memory was 148.4 MB in the beginning and 209.2 MB in the end (delta: 60.8 MB). Free memory was 102.1 MB in the beginning and 177.1 MB in the end (delta: -75.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 174.87 ms. Allocated memory is still 209.2 MB. Free memory was 177.1 MB in the beginning and 173.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1243.63 ms. Allocated memory was 209.2 MB in the beginning and 230.7 MB in the end (delta: 21.5 MB). Free memory was 173.2 MB in the beginning and 188.9 MB in the end (delta: -15.7 MB). Peak memory consumption was 80.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36512.19 ms. Allocated memory was 230.7 MB in the beginning and 547.4 MB in the end (delta: 316.7 MB). Free memory was 188.9 MB in the beginning and 212.8 MB in the end (delta: -23.9 MB). Peak memory consumption was 292.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 310]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L120] int pumpRunning = 0; [L121] int systemActive = 1; [L315] int cleanupTimeShifts = 4; [L415] int waterLevel = 1; [L416] int methaneLevelCritical = 0; [L713] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L391] int retValue_acc ; [L392] int tmp ; [L396] FCALL select_helpers() [L397] FCALL select_features() [L398] CALL, EXPR valid_product() [L535] int retValue_acc ; [L538] retValue_acc = 1 [L539] return (retValue_acc); [L398] RET, EXPR valid_product() [L398] tmp = valid_product() [L400] COND TRUE \read(tmp) [L402] FCALL setup() [L403] CALL runTest() [L382] CALL test() [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) [L67] CALL waterRise() [L433] COND TRUE waterLevel < 2 [L434] waterLevel = waterLevel + 1 [L67] RET waterRise() [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L128] COND FALSE !(\read(pumpRunning)) [L135] COND TRUE \read(systemActive) [L137] CALL processEnvironment() [L157] int tmp ; [L160] COND TRUE ! pumpRunning [L162] CALL, EXPR isHighWaterLevel() [L272] int retValue_acc ; [L273] int tmp ; [L274] int tmp___0 ; [L278] CALL, EXPR isHighWaterSensorDry() [L495] int retValue_acc ; [L498] COND FALSE !(waterLevel < 2) [L502] retValue_acc = 0 [L503] return (retValue_acc); [L278] RET, EXPR isHighWaterSensorDry() [L278] tmp = isHighWaterSensorDry() [L280] COND FALSE !(\read(tmp)) [L283] tmp___0 = 1 [L285] retValue_acc = tmp___0 [L286] return (retValue_acc); [L162] RET, EXPR isHighWaterLevel() [L162] tmp = isHighWaterLevel() [L164] COND TRUE \read(tmp) [L166] CALL activatePump() [L191] int tmp ; [L195] CALL, EXPR isMethaneAlarm() [L216] int retValue_acc ; [L220] CALL, EXPR isMethaneLevelCritical() [L454] int retValue_acc ; [L457] retValue_acc = methaneLevelCritical [L458] return (retValue_acc); [L220] RET, EXPR isMethaneLevelCritical() [L220] retValue_acc = isMethaneLevelCritical() [L222] return (retValue_acc); [L195] RET, EXPR isMethaneAlarm() [L195] tmp = isMethaneAlarm() [L197] COND FALSE !(\read(tmp)) [L201] CALL activatePump__wrappee__highWaterSensor() [L185] pumpRunning = 1 [L201] RET activatePump__wrappee__highWaterSensor() [L166] RET activatePump() [L137] RET processEnvironment() [L143] CALL __utac_acc__Specification4_spec__1() [L911] int tmp ; [L912] int tmp___0 ; [L916] CALL, EXPR getWaterLevel() [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp = getWaterLevel() [L918] COND FALSE !(tmp == 0) [L143] RET __utac_acc__Specification4_spec__1() [L100] RET timeShift() [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L128] COND TRUE \read(pumpRunning) [L130] CALL lowerWaterLevel() [L421] COND TRUE waterLevel > 0 [L422] waterLevel = waterLevel - 1 [L130] RET lowerWaterLevel() [L135] COND TRUE \read(systemActive) [L137] CALL processEnvironment() [L157] int tmp ; [L160] COND FALSE !(! pumpRunning) [L175] FCALL processEnvironment__wrappee__base() [L137] RET processEnvironment() [L143] CALL __utac_acc__Specification4_spec__1() [L911] int tmp ; [L912] int tmp___0 ; [L916] CALL, EXPR getWaterLevel() [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp = getWaterLevel() [L918] COND FALSE !(tmp == 0) [L143] RET __utac_acc__Specification4_spec__1() [L100] RET timeShift() [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L128] COND TRUE \read(pumpRunning) [L130] CALL lowerWaterLevel() [L421] COND TRUE waterLevel > 0 [L422] waterLevel = waterLevel - 1 [L130] RET lowerWaterLevel() [L135] COND TRUE \read(systemActive) [L137] CALL processEnvironment() [L157] int tmp ; [L160] COND FALSE !(! pumpRunning) [L175] FCALL processEnvironment__wrappee__base() [L137] RET processEnvironment() [L143] CALL __utac_acc__Specification4_spec__1() [L911] int tmp ; [L912] int tmp___0 ; [L916] CALL, EXPR getWaterLevel() [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp = getWaterLevel() [L918] COND TRUE tmp == 0 [L920] CALL, EXPR isPumpRunning() [L227] int retValue_acc ; [L230] retValue_acc = pumpRunning [L231] return (retValue_acc); [L920] RET, EXPR isPumpRunning() [L920] tmp___0 = isPumpRunning() [L922] COND TRUE \read(tmp___0) [L924] CALL __automaton_fail() [L310] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 36.3s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 30.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1120 SDtfs, 2476 SDslu, 1336 SDs, 0 SdLazy, 7080 SolverSat, 1642 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 386 GetRequests, 252 SyntacticMatches, 6 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1102occurred 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: 1.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 749 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 897 NumberOfCodeBlocks, 897 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 725 ConstructedInterpolants, 0 QuantifiedInterpolants, 245828 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 80/95 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...