/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:04:28,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:04:28,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:04:28,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:04:28,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:04:28,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:04:28,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:04:28,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:04:28,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:04:28,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:04:28,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:04:28,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:04:28,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:04:28,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:04:28,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:04:28,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:04:28,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:04:28,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:04:28,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:04:28,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:04:28,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:04:28,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:04:28,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:04:28,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:04:28,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:04:28,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:04:28,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:04:28,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:04:28,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:04:28,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:04:28,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:04:28,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:04:28,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:04:28,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:04:28,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:04:28,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:04:28,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:04:28,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:04:28,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:04:28,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:04:28,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:04:28,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 02:04:29,004 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:04:29,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:04:29,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:04:29,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:04:29,006 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:04:29,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:04:29,007 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:04:29,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:04:29,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:04:29,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:04:29,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:04:29,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:04:29,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:04:29,008 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:04:29,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:04:29,008 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:04:29,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:04:29,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:04:29,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:04:29,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:04:29,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:04:29,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:04:29,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:04:29,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:04:29,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:04:29,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:04:29,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:04:29,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:04:29,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:04:29,011 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 02:04:29,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:04:29,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:04:29,349 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:04:29,350 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:04:29,350 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:04:29,351 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_productSimulator.cil.c [2020-08-22 02:04:29,416 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9efe0bce8/09f66dbc7f514c2c82a7a616f16d65a6/FLAGbafc031ab [2020-08-22 02:04:29,974 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:04:29,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_productSimulator.cil.c [2020-08-22 02:04:29,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9efe0bce8/09f66dbc7f514c2c82a7a616f16d65a6/FLAGbafc031ab [2020-08-22 02:04:30,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9efe0bce8/09f66dbc7f514c2c82a7a616f16d65a6 [2020-08-22 02:04:30,223 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:04:30,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:04:30,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:04:30,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:04:30,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:04:30,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:04:30" (1/1) ... [2020-08-22 02:04:30,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43be0364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:30, skipping insertion in model container [2020-08-22 02:04:30,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:04:30" (1/1) ... [2020-08-22 02:04:30,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:04:30,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:04:30,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:04:30,757 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:04:30,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:04:30,910 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:04:30,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:30 WrapperNode [2020-08-22 02:04:30,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:04:30,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:04:30,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:04:30,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:04:30,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:30" (1/1) ... [2020-08-22 02:04:30,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:30" (1/1) ... [2020-08-22 02:04:30,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:30" (1/1) ... [2020-08-22 02:04:30,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:30" (1/1) ... [2020-08-22 02:04:31,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:30" (1/1) ... [2020-08-22 02:04:31,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:30" (1/1) ... [2020-08-22 02:04:31,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:30" (1/1) ... [2020-08-22 02:04:31,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:04:31,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:04:31,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:04:31,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:04:31,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:04:31,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:04:31,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:04:31,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:04:31,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:04:31,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:04:31,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:04:31,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:04:31,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:04:31,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:04:31,128 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:04:31,128 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:04:31,129 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:04:31,129 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:04:31,129 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:04:31,129 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:04:31,130 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:04:31,130 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-22 02:04:31,130 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-22 02:04:31,130 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-22 02:04:31,131 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-22 02:04:31,131 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-22 02:04:31,131 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-22 02:04:31,131 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:04:31,131 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-22 02:04:31,132 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-22 02:04:31,133 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:04:31,133 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:04:31,134 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:04:31,134 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:04:31,134 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:04:31,134 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:04:31,134 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 02:04:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 02:04:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 02:04:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:04:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:04:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:04:31,136 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:04:31,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 02:04:31,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:04:31,136 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:04:31,136 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:04:31,136 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:04:31,137 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:04:31,137 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:04:31,139 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:04:31,139 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:04:31,139 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 02:04:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:04:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:04:31,140 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:04:31,140 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:04:31,140 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:04:31,140 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:04:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:04:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:04:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:04:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:04:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:04:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:04:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:04:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:04:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:04:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:04:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:04:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:04:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:04:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:04:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:04:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:04:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:04:31,144 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:04:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:04:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:04:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:04:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:04:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:04:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:04:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:04:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:04:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:04:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 02:04:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 02:04:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:04:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:04:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:04:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:04:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 02:04:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:04:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:04:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:04:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 02:04:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:04:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-22 02:04:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:04:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-22 02:04:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-22 02:04:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 02:04:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-22 02:04:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-22 02:04:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:04:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-22 02:04:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-22 02:04:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-22 02:04:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:04:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:04:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:04:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:04:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:04:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:04:32,429 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:04:32,429 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:04:32,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:04:32 BoogieIcfgContainer [2020-08-22 02:04:32,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:04:32,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:04:32,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:04:32,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:04:32,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:04:30" (1/3) ... [2020-08-22 02:04:32,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61431d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:04:32, skipping insertion in model container [2020-08-22 02:04:32,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:04:30" (2/3) ... [2020-08-22 02:04:32,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61431d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:04:32, skipping insertion in model container [2020-08-22 02:04:32,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:04:32" (3/3) ... [2020-08-22 02:04:32,444 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_productSimulator.cil.c [2020-08-22 02:04:32,457 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:04:32,466 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:04:32,483 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:04:32,513 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:04:32,513 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:04:32,513 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:04:32,514 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:04:32,515 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:04:32,515 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:04:32,515 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:04:32,515 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:04:32,542 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states. [2020-08-22 02:04:32,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 02:04:32,557 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:04:32,558 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:04:32,559 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:04:32,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:04:32,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1384301403, now seen corresponding path program 1 times [2020-08-22 02:04:32,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:04:32,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256135213] [2020-08-22 02:04:32,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:04:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:33,341 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-22 02:04:33,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:04:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:33,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:04:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:33,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:04:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:33,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:04:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:33,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:04:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:33,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 02:04:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:33,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:04:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:33,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 02:04:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:33,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 02:04:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:33,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:04:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:33,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:04:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:33,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 02:04:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:33,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 02:04:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:33,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 02:04:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:33,531 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 02:04:33,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256135213] [2020-08-22 02:04:33,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:04:33,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 02:04:33,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542283209] [2020-08-22 02:04:33,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 02:04:33,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:04:33,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 02:04:33,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:04:33,562 INFO L87 Difference]: Start difference. First operand 248 states. Second operand 5 states. [2020-08-22 02:04:35,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:04:35,748 INFO L93 Difference]: Finished difference Result 448 states and 591 transitions. [2020-08-22 02:04:35,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 02:04:35,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-08-22 02:04:35,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:04:35,768 INFO L225 Difference]: With dead ends: 448 [2020-08-22 02:04:35,768 INFO L226 Difference]: Without dead ends: 254 [2020-08-22 02:04:35,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-08-22 02:04:35,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-22 02:04:35,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 205. [2020-08-22 02:04:35,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-22 02:04:35,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 252 transitions. [2020-08-22 02:04:35,891 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 252 transitions. Word has length 84 [2020-08-22 02:04:35,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:04:35,891 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 252 transitions. [2020-08-22 02:04:35,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 02:04:35,892 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 252 transitions. [2020-08-22 02:04:35,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-22 02:04:35,897 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:04:35,897 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:04:35,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:04:35,898 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:04:35,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:04:35,898 INFO L82 PathProgramCache]: Analyzing trace with hash 435784209, now seen corresponding path program 1 times [2020-08-22 02:04:35,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:04:35,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040229703] [2020-08-22 02:04:35,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:04:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:36,281 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-22 02:04:36,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:04:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:36,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:04:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:36,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:04:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:36,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:04:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:36,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:04:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:36,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 02:04:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:36,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:04:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:36,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 02:04:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:36,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 02:04:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:36,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:04:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:36,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:04:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:36,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 02:04:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:36,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 02:04:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:36,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 02:04:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 02:04:36,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040229703] [2020-08-22 02:04:36,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:04:36,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 02:04:36,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818585441] [2020-08-22 02:04:36,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 02:04:36,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:04:36,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 02:04:36,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 02:04:36,385 INFO L87 Difference]: Start difference. First operand 205 states and 252 transitions. Second operand 6 states. [2020-08-22 02:04:37,113 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-22 02:04:38,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:04:38,805 INFO L93 Difference]: Finished difference Result 372 states and 469 transitions. [2020-08-22 02:04:38,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 02:04:38,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-08-22 02:04:38,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:04:38,823 INFO L225 Difference]: With dead ends: 372 [2020-08-22 02:04:38,827 INFO L226 Difference]: Without dead ends: 238 [2020-08-22 02:04:38,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:04:38,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-22 02:04:38,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 196. [2020-08-22 02:04:38,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-08-22 02:04:38,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 240 transitions. [2020-08-22 02:04:38,895 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 240 transitions. Word has length 85 [2020-08-22 02:04:38,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:04:38,895 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 240 transitions. [2020-08-22 02:04:38,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 02:04:38,896 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 240 transitions. [2020-08-22 02:04:38,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-22 02:04:38,899 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:04:38,899 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:04:38,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:04:38,899 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:04:38,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:04:38,900 INFO L82 PathProgramCache]: Analyzing trace with hash 681264365, now seen corresponding path program 1 times [2020-08-22 02:04:38,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:04:38,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645623709] [2020-08-22 02:04:38,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:04:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:39,356 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-22 02:04:39,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:04:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:39,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:04:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:39,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:04:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:39,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:04:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:39,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:04:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:39,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 02:04:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:39,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:04:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:39,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 02:04:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:39,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 02:04:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:39,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:04:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:39,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:04:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:39,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 02:04:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:39,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 02:04:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:39,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 02:04:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:39,587 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 02:04:39,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645623709] [2020-08-22 02:04:39,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:04:39,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 02:04:39,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620382513] [2020-08-22 02:04:39,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:04:39,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:04:39,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:04:39,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:04:39,592 INFO L87 Difference]: Start difference. First operand 196 states and 240 transitions. Second operand 12 states. [2020-08-22 02:04:40,137 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-22 02:04:40,832 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-08-22 02:04:41,669 WARN L193 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-22 02:04:42,672 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-22 02:04:43,062 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-22 02:04:46,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:04:46,845 INFO L93 Difference]: Finished difference Result 643 states and 818 transitions. [2020-08-22 02:04:46,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 02:04:46,848 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 90 [2020-08-22 02:04:46,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:04:46,854 INFO L225 Difference]: With dead ends: 643 [2020-08-22 02:04:46,854 INFO L226 Difference]: Without dead ends: 488 [2020-08-22 02:04:46,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-08-22 02:04:46,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-08-22 02:04:46,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 397. [2020-08-22 02:04:46,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-08-22 02:04:46,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 497 transitions. [2020-08-22 02:04:46,957 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 497 transitions. Word has length 90 [2020-08-22 02:04:46,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:04:46,958 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 497 transitions. [2020-08-22 02:04:46,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:04:46,958 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 497 transitions. [2020-08-22 02:04:46,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-22 02:04:46,961 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:04:46,961 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:04:46,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:04:46,962 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:04:46,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:04:46,962 INFO L82 PathProgramCache]: Analyzing trace with hash -326319286, now seen corresponding path program 1 times [2020-08-22 02:04:46,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:04:46,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018002473] [2020-08-22 02:04:46,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:04:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:47,328 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-22 02:04:47,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:04:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:47,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:04:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:47,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:04:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:47,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:04:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:47,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:04:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:47,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 02:04:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:47,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:04:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:47,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 02:04:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:47,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 02:04:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:47,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:04:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:47,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:04:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:47,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 02:04:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:47,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 02:04:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:47,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 02:04:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:47,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 02:04:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:47,512 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 02:04:47,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018002473] [2020-08-22 02:04:47,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:04:47,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 02:04:47,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120392488] [2020-08-22 02:04:47,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:04:47,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:04:47,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:04:47,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:04:47,515 INFO L87 Difference]: Start difference. First operand 397 states and 497 transitions. Second operand 10 states. [2020-08-22 02:04:48,026 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-22 02:04:50,081 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-22 02:04:50,492 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-22 02:04:50,831 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-22 02:04:51,163 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-22 02:04:53,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:04:53,064 INFO L93 Difference]: Finished difference Result 1234 states and 1653 transitions. [2020-08-22 02:04:53,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 02:04:53,067 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 96 [2020-08-22 02:04:53,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:04:53,073 INFO L225 Difference]: With dead ends: 1234 [2020-08-22 02:04:53,074 INFO L226 Difference]: Without dead ends: 878 [2020-08-22 02:04:53,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-08-22 02:04:53,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-08-22 02:04:53,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 778. [2020-08-22 02:04:53,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2020-08-22 02:04:53,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 987 transitions. [2020-08-22 02:04:53,262 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 987 transitions. Word has length 96 [2020-08-22 02:04:53,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:04:53,263 INFO L479 AbstractCegarLoop]: Abstraction has 778 states and 987 transitions. [2020-08-22 02:04:53,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:04:53,263 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 987 transitions. [2020-08-22 02:04:53,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-22 02:04:53,267 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:04:53,268 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:04:53,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:04:53,268 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:04:53,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:04:53,269 INFO L82 PathProgramCache]: Analyzing trace with hash 635729360, now seen corresponding path program 1 times [2020-08-22 02:04:53,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:04:53,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939021438] [2020-08-22 02:04:53,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:04:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:53,596 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-22 02:04:53,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:04:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:53,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:04:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:53,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:04:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:53,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:04:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:53,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:04:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:53,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 02:04:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:53,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:04:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:53,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 02:04:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:53,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 02:04:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:53,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:04:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:53,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:04:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:53,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 02:04:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:53,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 02:04:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:53,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 02:04:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:53,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 02:04:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:53,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 02:04:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:04:53,734 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 02:04:53,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939021438] [2020-08-22 02:04:53,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:04:53,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:04:53,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292353403] [2020-08-22 02:04:53,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:04:53,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:04:53,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:04:53,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:04:53,737 INFO L87 Difference]: Start difference. First operand 778 states and 987 transitions. Second operand 8 states. [2020-08-22 02:04:54,449 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-22 02:04:58,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:04:58,105 INFO L93 Difference]: Finished difference Result 1840 states and 2490 transitions. [2020-08-22 02:04:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 02:04:58,106 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-08-22 02:04:58,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:04:58,114 INFO L225 Difference]: With dead ends: 1840 [2020-08-22 02:04:58,114 INFO L226 Difference]: Without dead ends: 1103 [2020-08-22 02:04:58,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-08-22 02:04:58,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-08-22 02:04:58,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1024. [2020-08-22 02:04:58,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-08-22 02:04:58,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1298 transitions. [2020-08-22 02:04:58,340 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1298 transitions. Word has length 100 [2020-08-22 02:04:58,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:04:58,340 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1298 transitions. [2020-08-22 02:04:58,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:04:58,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1298 transitions. [2020-08-22 02:04:58,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-22 02:04:58,343 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:04:58,343 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:04:58,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:04:58,344 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:04:58,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:04:58,344 INFO L82 PathProgramCache]: Analyzing trace with hash -950611836, now seen corresponding path program 1 times [2020-08-22 02:04:58,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:04:58,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113138481] [2020-08-22 02:04:58,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:04:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:04:58,447 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:04:58,448 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:04:58,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:04:58,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:04:58 BoogieIcfgContainer [2020-08-22 02:04:58,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:04:58,481 INFO L168 Benchmark]: Toolchain (without parser) took 28256.82 ms. Allocated memory was 141.0 MB in the beginning and 628.1 MB in the end (delta: 487.1 MB). Free memory was 103.1 MB in the beginning and 577.2 MB in the end (delta: -474.0 MB). Peak memory consumption was 508.4 MB. Max. memory is 7.1 GB. [2020-08-22 02:04:58,482 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 02:04:58,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.52 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.9 MB in the beginning and 170.5 MB in the end (delta: -67.6 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2020-08-22 02:04:58,484 INFO L168 Benchmark]: Boogie Preprocessor took 122.18 ms. Allocated memory is still 204.5 MB. Free memory was 170.5 MB in the beginning and 165.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-22 02:04:58,485 INFO L168 Benchmark]: RCFGBuilder took 1400.46 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 165.7 MB in the beginning and 178.5 MB in the end (delta: -12.7 MB). Peak memory consumption was 78.4 MB. Max. memory is 7.1 GB. [2020-08-22 02:04:58,485 INFO L168 Benchmark]: TraceAbstraction took 26043.06 ms. Allocated memory was 234.4 MB in the beginning and 628.1 MB in the end (delta: 393.7 MB). Free memory was 178.5 MB in the beginning and 577.2 MB in the end (delta: -398.7 MB). Peak memory consumption was 490.4 MB. Max. memory is 7.1 GB. [2020-08-22 02:04:58,489 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 686.52 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.9 MB in the beginning and 170.5 MB in the end (delta: -67.6 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.18 ms. Allocated memory is still 204.5 MB. Free memory was 170.5 MB in the beginning and 165.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1400.46 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 165.7 MB in the beginning and 178.5 MB in the end (delta: -12.7 MB). Peak memory consumption was 78.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26043.06 ms. Allocated memory was 234.4 MB in the beginning and 628.1 MB in the end (delta: 393.7 MB). Free memory was 178.5 MB in the beginning and 577.2 MB in the end (delta: -398.7 MB). Peak memory consumption was 490.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1022]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L510] int __SELECTED_FEATURE_base ; [L511] int __SELECTED_FEATURE_highWaterSensor ; [L512] int __SELECTED_FEATURE_lowWaterSensor ; [L513] int __SELECTED_FEATURE_methaneQuery ; [L514] int __SELECTED_FEATURE_methaneAlarm ; [L515] int __SELECTED_FEATURE_stopCommand ; [L516] int __SELECTED_FEATURE_startCommand ; [L517] int __GUIDSL_ROOT_PRODUCTION ; [L605] int pumpRunning = 0; [L606] int systemActive = 1; [L1027] int waterLevel = 1; [L1028] int methaneLevelCritical = 0; [L487] int retValue_acc ; [L488] int tmp ; [L492] CALL select_helpers() [L968] __GUIDSL_ROOT_PRODUCTION = 1 [L492] RET select_helpers() [L493] CALL select_features() [L953] __SELECTED_FEATURE_base = 1 [L954] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L954] RET, EXPR select_one() [L954] __SELECTED_FEATURE_highWaterSensor = select_one() [L955] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L955] RET, EXPR select_one() [L955] __SELECTED_FEATURE_lowWaterSensor = select_one() [L956] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L956] RET, EXPR select_one() [L956] __SELECTED_FEATURE_methaneQuery = select_one() [L957] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L957] RET, EXPR select_one() [L957] __SELECTED_FEATURE_methaneAlarm = select_one() [L958] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L958] RET, EXPR select_one() [L958] __SELECTED_FEATURE_stopCommand = select_one() [L959] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L959] RET, EXPR select_one() [L959] __SELECTED_FEATURE_startCommand = select_one() [L493] RET select_features() [L494] CALL, EXPR valid_product() [L973] int retValue_acc ; [L976] retValue_acc = __SELECTED_FEATURE_base [L977] return (retValue_acc); [L494] RET, EXPR valid_product() [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L498] FCALL setup() [L499] CALL runTest() [L478] CALL test() [L521] int splverifierCounter ; [L522] int tmp ; [L523] int tmp___0 ; [L524] int tmp___1 ; [L525] int tmp___2 ; [L528] splverifierCounter = 0 [L530] COND TRUE 1 [L532] COND TRUE splverifierCounter < 4 [L538] tmp = __VERIFIER_nondet_int() [L540] COND TRUE \read(tmp) [L542] CALL waterRise() [L1045] COND TRUE waterLevel < 2 [L1046] waterLevel = waterLevel + 1 [L542] RET waterRise() [L548] tmp___0 = __VERIFIER_nondet_int() [L550] COND FALSE !(\read(tmp___0)) [L558] tmp___2 = __VERIFIER_nondet_int() [L560] COND FALSE !(\read(tmp___2)) [L570] tmp___1 = __VERIFIER_nondet_int() [L572] COND TRUE \read(tmp___1) [L573] COND TRUE \read(__SELECTED_FEATURE_stopCommand) [L575] CALL stopSystem() [L917] COND FALSE !(\read(pumpRunning)) [L924] systemActive = 0 [L575] RET stopSystem() [L585] CALL timeShift() [L613] COND FALSE !(\read(pumpRunning)) [L620] COND FALSE !(\read(systemActive)) [L628] CALL __utac_acc__Specification3_spec__1() [L985] int tmp ; [L986] int tmp___0 ; [L987] int tmp___1 ; [L991] CALL, EXPR isMethaneLevelCritical() [L1066] int retValue_acc ; [L1069] retValue_acc = methaneLevelCritical [L1070] return (retValue_acc); [L991] RET, EXPR isMethaneLevelCritical() [L991] tmp = isMethaneLevelCritical() [L993] COND FALSE !(\read(tmp)) [L997] CALL, EXPR getWaterLevel() [L1098] int retValue_acc ; [L1101] retValue_acc = waterLevel [L1102] return (retValue_acc); [L997] RET, EXPR getWaterLevel() [L997] tmp___0 = getWaterLevel() [L999] COND TRUE tmp___0 == 2 [L1001] CALL, EXPR isPumpRunning() [L831] int retValue_acc ; [L834] retValue_acc = pumpRunning [L835] return (retValue_acc); [L1001] RET, EXPR isPumpRunning() [L1001] tmp___1 = isPumpRunning() [L1003] COND FALSE !(\read(tmp___1)) [L1007] CALL __automaton_fail() [L1022] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 48 procedures, 301 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.9s, OverallIterations: 6, TraceHistogramMax: 6, AutomataDifference: 21.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 845 SDtfs, 3115 SDslu, 268 SDs, 0 SdLazy, 4707 SolverSat, 2595 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1024occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 361 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 555 NumberOfCodeBlocks, 555 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 450 ConstructedInterpolants, 0 QuantifiedInterpolants, 167384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 225/225 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...