/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -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 0.1.25-5644d1e-m [2020-08-19 02:36:46,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:36:46,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:36:46,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:36:46,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:36:46,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:36:46,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:36:46,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:36:46,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:36:46,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:36:46,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:36:46,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:36:46,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:36:46,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:36:46,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:36:46,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:36:46,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:36:46,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:36:46,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:36:46,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:36:46,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:36:46,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:36:46,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:36:46,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:36:46,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:36:46,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:36:46,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:36:46,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:36:46,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:36:46,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:36:46,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:36:46,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:36:46,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:36:46,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:36:46,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:36:46,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:36:46,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:36:46,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:36:46,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:36:46,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:36:46,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:36:46,958 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 [2020-08-19 02:36:46,993 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:36:46,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:36:46,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:36:46,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:36:46,996 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:36:46,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:36:46,996 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:36:46,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:36:46,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:36:46,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:36:46,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:36:46,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:36:46,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:36:46,999 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:36:46,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:36:46,999 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:36:46,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:36:46,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:36:47,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:36:47,000 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:36:47,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:36:47,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:36:47,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:36:47,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:36:47,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:36:47,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:36:47,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:36:47,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:36:47,002 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:36:47,002 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=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:36:47,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:36:47,323 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:36:47,328 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:36:47,331 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:36:47,331 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:36:47,332 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_productSimulator.cil.c [2020-08-19 02:36:47,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae81cba2a/4167c4903cb6487186d88684171a23b0/FLAG0fff8c837 [2020-08-19 02:36:47,881 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:36:47,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_productSimulator.cil.c [2020-08-19 02:36:47,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae81cba2a/4167c4903cb6487186d88684171a23b0/FLAG0fff8c837 [2020-08-19 02:36:48,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae81cba2a/4167c4903cb6487186d88684171a23b0 [2020-08-19 02:36:48,275 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:36:48,276 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:36:48,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:36:48,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:36:48,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:36:48,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:36:48" (1/1) ... [2020-08-19 02:36:48,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d733b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:48, skipping insertion in model container [2020-08-19 02:36:48,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:36:48" (1/1) ... [2020-08-19 02:36:48,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:36:48,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:36:48,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:36:48,904 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:36:48,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:36:49,037 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:36:49,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:49 WrapperNode [2020-08-19 02:36:49,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:36:49,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:36:49,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:36:49,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:36:49,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:49" (1/1) ... [2020-08-19 02:36:49,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:49" (1/1) ... [2020-08-19 02:36:49,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:49" (1/1) ... [2020-08-19 02:36:49,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:49" (1/1) ... [2020-08-19 02:36:49,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:49" (1/1) ... [2020-08-19 02:36:49,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:49" (1/1) ... [2020-08-19 02:36:49,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:49" (1/1) ... [2020-08-19 02:36:49,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:36:49,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:36:49,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:36:49,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:36:49,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:49" (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 [2020-08-19 02:36:49,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:36:49,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:36:49,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:36:49,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:36:49,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:36:49,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:36:49,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:36:49,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:36:49,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:36:49,216 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:36:49,216 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:36:49,216 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:36:49,216 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:36:49,217 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:36:49,217 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:36:49,217 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:36:49,217 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-19 02:36:49,217 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-19 02:36:49,218 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-19 02:36:49,218 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-19 02:36:49,218 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-19 02:36:49,218 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-19 02:36:49,218 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:36:49,219 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-19 02:36:49,219 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-19 02:36:49,219 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:36:49,219 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:36:49,219 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:36:49,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:36:49,220 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:36:49,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 02:36:49,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 02:36:49,220 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 02:36:49,221 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 02:36:49,221 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:36:49,221 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:36:49,221 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:36:49,221 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:36:49,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 02:36:49,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:36:49,222 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:36:49,222 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:36:49,222 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:36:49,222 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:36:49,223 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:36:49,223 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:36:49,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 02:36:49,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 02:36:49,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:36:49,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:36:49,223 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:36:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:36:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:36:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:36:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:36:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:36:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:36:49,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:36:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:36:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:36:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:36:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:36:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:36:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:36:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:36:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:36:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:36:49,225 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:36:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:36:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:36:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:36:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:36:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:36:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:36:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:36:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:36:49,227 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:36:49,227 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:36:49,227 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:36:49,227 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:36:49,227 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:36:49,227 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 02:36:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 02:36:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:36:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:36:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:36:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 02:36:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 02:36:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:36:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:36:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:36:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 02:36:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:36:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-19 02:36:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 02:36:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-19 02:36:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-19 02:36:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 02:36:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-19 02:36:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-19 02:36:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:36:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-19 02:36:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-19 02:36:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-19 02:36:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:36:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:36:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:36:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:36:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:36:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:36:50,349 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:36:50,349 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:36:50,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:36:50 BoogieIcfgContainer [2020-08-19 02:36:50,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:36:50,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:36:50,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:36:50,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:36:50,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:36:48" (1/3) ... [2020-08-19 02:36:50,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed26345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:36:50, skipping insertion in model container [2020-08-19 02:36:50,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:36:49" (2/3) ... [2020-08-19 02:36:50,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed26345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:36:50, skipping insertion in model container [2020-08-19 02:36:50,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:36:50" (3/3) ... [2020-08-19 02:36:50,363 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_productSimulator.cil.c [2020-08-19 02:36:50,373 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:36:50,381 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:36:50,394 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:36:50,420 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:36:50,421 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:36:50,421 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:36:50,421 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:36:50,421 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:36:50,421 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:36:50,421 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:36:50,422 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:36:50,446 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states. [2020-08-19 02:36:50,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 02:36:50,460 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:36:50,461 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] [2020-08-19 02:36:50,462 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:36:50,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:36:50,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1384301403, now seen corresponding path program 1 times [2020-08-19 02:36:50,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:36:50,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286393002] [2020-08-19 02:36:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:36:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:51,368 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 02:36:51,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:36:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:51,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:36:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:51,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:36:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:51,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:36:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:51,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:36:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:51,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 02:36:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:51,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:36:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:51,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 02:36:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:51,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 02:36:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:51,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:36:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:51,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 02:36:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:51,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 02:36:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:51,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 02:36:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:51,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 02:36:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:51,577 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 02:36:51,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286393002] [2020-08-19 02:36:51,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:36:51,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:36:51,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795881542] [2020-08-19 02:36:51,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:36:51,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:36:51,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:36:51,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:36:51,604 INFO L87 Difference]: Start difference. First operand 248 states. Second operand 5 states. [2020-08-19 02:36:54,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:36:54,190 INFO L93 Difference]: Finished difference Result 448 states and 591 transitions. [2020-08-19 02:36:54,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 02:36:54,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-08-19 02:36:54,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:36:54,208 INFO L225 Difference]: With dead ends: 448 [2020-08-19 02:36:54,208 INFO L226 Difference]: Without dead ends: 254 [2020-08-19 02:36:54,214 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 [2020-08-19 02:36:54,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-19 02:36:54,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 205. [2020-08-19 02:36:54,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-19 02:36:54,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 252 transitions. [2020-08-19 02:36:54,326 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 252 transitions. Word has length 84 [2020-08-19 02:36:54,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:36:54,327 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 252 transitions. [2020-08-19 02:36:54,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:36:54,328 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 252 transitions. [2020-08-19 02:36:54,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-19 02:36:54,333 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:36:54,333 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] [2020-08-19 02:36:54,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:36:54,334 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:36:54,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:36:54,335 INFO L82 PathProgramCache]: Analyzing trace with hash 435784209, now seen corresponding path program 1 times [2020-08-19 02:36:54,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:36:54,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328527903] [2020-08-19 02:36:54,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:36:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:54,739 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 02:36:54,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:36:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:54,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:36:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:54,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:36:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:54,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:36:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:54,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:36:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:54,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 02:36:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:54,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:36:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:54,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 02:36:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:54,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 02:36:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:54,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:36:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:54,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 02:36:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:54,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 02:36:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:54,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 02:36:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:54,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 02:36:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:54,850 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 02:36:54,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328527903] [2020-08-19 02:36:54,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:36:54,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:36:54,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984512569] [2020-08-19 02:36:54,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:36:54,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:36:54,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:36:54,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:36:54,854 INFO L87 Difference]: Start difference. First operand 205 states and 252 transitions. Second operand 6 states. [2020-08-19 02:36:55,590 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 02:36:57,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:36:57,352 INFO L93 Difference]: Finished difference Result 372 states and 469 transitions. [2020-08-19 02:36:57,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 02:36:57,357 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-08-19 02:36:57,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:36:57,386 INFO L225 Difference]: With dead ends: 372 [2020-08-19 02:36:57,386 INFO L226 Difference]: Without dead ends: 238 [2020-08-19 02:36:57,388 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 [2020-08-19 02:36:57,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-19 02:36:57,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 196. [2020-08-19 02:36:57,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-08-19 02:36:57,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 240 transitions. [2020-08-19 02:36:57,464 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 240 transitions. Word has length 85 [2020-08-19 02:36:57,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:36:57,464 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 240 transitions. [2020-08-19 02:36:57,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:36:57,465 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 240 transitions. [2020-08-19 02:36:57,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-19 02:36:57,468 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:36:57,468 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] [2020-08-19 02:36:57,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:36:57,469 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:36:57,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:36:57,469 INFO L82 PathProgramCache]: Analyzing trace with hash 681264365, now seen corresponding path program 1 times [2020-08-19 02:36:57,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:36:57,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841690651] [2020-08-19 02:36:57,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:36:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:57,868 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 02:36:57,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:36:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:57,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:36:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:57,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:36:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:58,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:36:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:58,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:36:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:58,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 02:36:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:58,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:36:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:58,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 02:36:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:58,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 02:36:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:58,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:36:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:58,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 02:36:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:58,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 02:36:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:58,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 02:36:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:58,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 02:36:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:58,087 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 02:36:58,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841690651] [2020-08-19 02:36:58,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:36:58,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 02:36:58,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144860589] [2020-08-19 02:36:58,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:36:58,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:36:58,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:36:58,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:36:58,091 INFO L87 Difference]: Start difference. First operand 196 states and 240 transitions. Second operand 12 states. [2020-08-19 02:36:58,637 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 02:36:59,274 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-08-19 02:37:00,113 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-19 02:37:01,120 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 02:37:01,481 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-19 02:37:05,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:37:05,387 INFO L93 Difference]: Finished difference Result 643 states and 818 transitions. [2020-08-19 02:37:05,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 02:37:05,388 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 90 [2020-08-19 02:37:05,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:37:05,393 INFO L225 Difference]: With dead ends: 643 [2020-08-19 02:37:05,394 INFO L226 Difference]: Without dead ends: 488 [2020-08-19 02:37:05,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-08-19 02:37:05,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-08-19 02:37:05,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 397. [2020-08-19 02:37:05,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-08-19 02:37:05,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 497 transitions. [2020-08-19 02:37:05,521 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 497 transitions. Word has length 90 [2020-08-19 02:37:05,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:37:05,522 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 497 transitions. [2020-08-19 02:37:05,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:37:05,522 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 497 transitions. [2020-08-19 02:37:05,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-19 02:37:05,526 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:37:05,526 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] [2020-08-19 02:37:05,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:37:05,526 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:37:05,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:37:05,527 INFO L82 PathProgramCache]: Analyzing trace with hash -326319286, now seen corresponding path program 1 times [2020-08-19 02:37:05,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:37:05,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377376019] [2020-08-19 02:37:05,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:37:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:05,853 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 02:37:05,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:37:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:05,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:37:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:05,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:37:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:05,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:37:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:05,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:37:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:05,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 02:37:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:05,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:37:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:05,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 02:37:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:05,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 02:37:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:05,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:37:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:05,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 02:37:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:05,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 02:37:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:05,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 02:37:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:05,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 02:37:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:06,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 02:37:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:06,023 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 02:37:06,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377376019] [2020-08-19 02:37:06,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:37:06,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 02:37:06,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125198229] [2020-08-19 02:37:06,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:37:06,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:37:06,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:37:06,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:37:06,033 INFO L87 Difference]: Start difference. First operand 397 states and 497 transitions. Second operand 10 states. [2020-08-19 02:37:06,693 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 02:37:08,864 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 02:37:09,290 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 02:37:09,629 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 02:37:09,937 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 02:37:11,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:37:11,716 INFO L93 Difference]: Finished difference Result 1234 states and 1653 transitions. [2020-08-19 02:37:11,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 02:37:11,722 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 96 [2020-08-19 02:37:11,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:37:11,733 INFO L225 Difference]: With dead ends: 1234 [2020-08-19 02:37:11,733 INFO L226 Difference]: Without dead ends: 878 [2020-08-19 02:37:11,735 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 [2020-08-19 02:37:11,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-08-19 02:37:11,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 778. [2020-08-19 02:37:11,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2020-08-19 02:37:11,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 987 transitions. [2020-08-19 02:37:11,952 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 987 transitions. Word has length 96 [2020-08-19 02:37:11,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:37:11,953 INFO L479 AbstractCegarLoop]: Abstraction has 778 states and 987 transitions. [2020-08-19 02:37:11,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:37:11,953 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 987 transitions. [2020-08-19 02:37:11,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-19 02:37:11,957 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:37:11,957 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] [2020-08-19 02:37:11,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:37:11,958 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:37:11,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:37:11,958 INFO L82 PathProgramCache]: Analyzing trace with hash 635729360, now seen corresponding path program 1 times [2020-08-19 02:37:11,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:37:11,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612824364] [2020-08-19 02:37:11,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:37:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:12,294 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 02:37:12,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:37:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:12,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:37:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:12,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:37:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:12,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:37:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:12,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:37:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:12,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 02:37:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:12,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:37:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:12,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 02:37:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:12,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 02:37:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:12,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:37:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:12,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 02:37:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:12,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 02:37:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:12,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 02:37:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:12,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 02:37:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:12,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 02:37:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:12,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 02:37:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:37:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 02:37:12,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612824364] [2020-08-19 02:37:12,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:37:12,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:37:12,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090477260] [2020-08-19 02:37:12,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:37:12,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:37:12,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:37:12,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:37:12,433 INFO L87 Difference]: Start difference. First operand 778 states and 987 transitions. Second operand 8 states. [2020-08-19 02:37:12,916 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 02:37:16,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:37:16,762 INFO L93 Difference]: Finished difference Result 1840 states and 2490 transitions. [2020-08-19 02:37:16,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 02:37:16,762 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-08-19 02:37:16,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:37:16,770 INFO L225 Difference]: With dead ends: 1840 [2020-08-19 02:37:16,771 INFO L226 Difference]: Without dead ends: 1103 [2020-08-19 02:37:16,774 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 [2020-08-19 02:37:16,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-08-19 02:37:17,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1024. [2020-08-19 02:37:17,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-08-19 02:37:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1298 transitions. [2020-08-19 02:37:17,030 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1298 transitions. Word has length 100 [2020-08-19 02:37:17,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:37:17,033 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1298 transitions. [2020-08-19 02:37:17,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:37:17,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1298 transitions. [2020-08-19 02:37:17,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-19 02:37:17,036 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:37:17,036 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] [2020-08-19 02:37:17,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:37:17,036 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:37:17,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:37:17,037 INFO L82 PathProgramCache]: Analyzing trace with hash -950611836, now seen corresponding path program 1 times [2020-08-19 02:37:17,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:37:17,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70840884] [2020-08-19 02:37:17,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:37:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 02:37:17,177 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 02:37:17,178 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:37:17,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:37:17,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:37:17 BoogieIcfgContainer [2020-08-19 02:37:17,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:37:17,209 INFO L168 Benchmark]: Toolchain (without parser) took 28932.63 ms. Allocated memory was 140.5 MB in the beginning and 574.6 MB in the end (delta: 434.1 MB). Free memory was 102.7 MB in the beginning and 400.7 MB in the end (delta: -298.0 MB). Peak memory consumption was 136.1 MB. Max. memory is 7.1 GB. [2020-08-19 02:37:17,210 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 02:37:17,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.95 ms. Allocated memory was 140.5 MB in the beginning and 207.1 MB in the end (delta: 66.6 MB). Free memory was 102.5 MB in the beginning and 170.3 MB in the end (delta: -67.8 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-08-19 02:37:17,211 INFO L168 Benchmark]: Boogie Preprocessor took 101.99 ms. Allocated memory is still 207.1 MB. Free memory was 170.3 MB in the beginning and 166.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-19 02:37:17,212 INFO L168 Benchmark]: RCFGBuilder took 1214.04 ms. Allocated memory was 207.1 MB in the beginning and 232.8 MB in the end (delta: 25.7 MB). Free memory was 165.6 MB in the beginning and 175.1 MB in the end (delta: -9.5 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. [2020-08-19 02:37:17,213 INFO L168 Benchmark]: TraceAbstraction took 26850.87 ms. Allocated memory was 232.8 MB in the beginning and 574.6 MB in the end (delta: 341.8 MB). Free memory was 175.1 MB in the beginning and 400.7 MB in the end (delta: -225.6 MB). Peak memory consumption was 116.2 MB. Max. memory is 7.1 GB. [2020-08-19 02:37:17,217 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 760.95 ms. Allocated memory was 140.5 MB in the beginning and 207.1 MB in the end (delta: 66.6 MB). Free memory was 102.5 MB in the beginning and 170.3 MB in the end (delta: -67.8 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.99 ms. Allocated memory is still 207.1 MB. Free memory was 170.3 MB in the beginning and 166.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1214.04 ms. Allocated memory was 207.1 MB in the beginning and 232.8 MB in the end (delta: 25.7 MB). Free memory was 165.6 MB in the beginning and 175.1 MB in the end (delta: -9.5 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26850.87 ms. Allocated memory was 232.8 MB in the beginning and 574.6 MB in the end (delta: 341.8 MB). Free memory was 175.1 MB in the beginning and 400.7 MB in the end (delta: -225.6 MB). Peak memory consumption was 116.2 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: 26.7s, OverallIterations: 6, TraceHistogramMax: 6, AutomataDifference: 22.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 846 SDtfs, 3115 SDslu, 268 SDs, 0 SdLazy, 4713 SolverSat, 2600 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 6.3s 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: 0.7s 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...