/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 10:36:09,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 10:36:09,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 10:36:09,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 10:36:09,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 10:36:09,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 10:36:09,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 10:36:09,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 10:36:09,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 10:36:09,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 10:36:09,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 10:36:10,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 10:36:10,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 10:36:10,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 10:36:10,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 10:36:10,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 10:36:10,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 10:36:10,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 10:36:10,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 10:36:10,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 10:36:10,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 10:36:10,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 10:36:10,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 10:36:10,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 10:36:10,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 10:36:10,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 10:36:10,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 10:36:10,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 10:36:10,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 10:36:10,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 10:36:10,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 10:36:10,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 10:36:10,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 10:36:10,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 10:36:10,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 10:36:10,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 10:36:10,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 10:36:10,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 10:36:10,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 10:36:10,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 10:36:10,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 10:36:10,041 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 10:36:10,077 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 10:36:10,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 10:36:10,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 10:36:10,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 10:36:10,079 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 10:36:10,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 10:36:10,082 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 10:36:10,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 10:36:10,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 10:36:10,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 10:36:10,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 10:36:10,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 10:36:10,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 10:36:10,083 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 10:36:10,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 10:36:10,083 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 10:36:10,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 10:36:10,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 10:36:10,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 10:36:10,084 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 10:36:10,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 10:36:10,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 10:36:10,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 10:36:10,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 10:36:10,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 10:36:10,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 10:36:10,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:10,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 10:36:10,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 10:36:10,087 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-21 10:36:10,403 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 10:36:10,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 10:36:10,425 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 10:36:10,426 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 10:36:10,433 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 10:36:10,434 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c [2020-07-21 10:36:10,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dacba70f/2bd0d04c01124d46814609fef5a3b4c1/FLAGffbf81333 [2020-07-21 10:36:11,064 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 10:36:11,065 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c [2020-07-21 10:36:11,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dacba70f/2bd0d04c01124d46814609fef5a3b4c1/FLAGffbf81333 [2020-07-21 10:36:11,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dacba70f/2bd0d04c01124d46814609fef5a3b4c1 [2020-07-21 10:36:11,346 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 10:36:11,349 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 10:36:11,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 10:36:11,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 10:36:11,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 10:36:11,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:36:11" (1/1) ... [2020-07-21 10:36:11,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cab1355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:36:11, skipping insertion in model container [2020-07-21 10:36:11,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:36:11" (1/1) ... [2020-07-21 10:36:11,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 10:36:11,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 10:36:11,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:36:11,896 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 10:36:11,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:36:12,020 INFO L208 MainTranslator]: Completed translation [2020-07-21 10:36:12,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:36:12 WrapperNode [2020-07-21 10:36:12,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 10:36:12,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 10:36:12,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 10:36:12,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 10:36:12,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:36:12" (1/1) ... [2020-07-21 10:36:12,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:36:12" (1/1) ... [2020-07-21 10:36:12,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:36:12" (1/1) ... [2020-07-21 10:36:12,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:36:12" (1/1) ... [2020-07-21 10:36:12,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:36:12" (1/1) ... [2020-07-21 10:36:12,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:36:12" (1/1) ... [2020-07-21 10:36:12,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:36:12" (1/1) ... [2020-07-21 10:36:12,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 10:36:12,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 10:36:12,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 10:36:12,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 10:36:12,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:36:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-21 10:36:12,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 10:36:12,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 10:36:12,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 10:36:12,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-07-21 10:36:12,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-07-21 10:36:12,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 10:36:12,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 10:36:12,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 10:36:12,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 10:36:12,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 10:36:12,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 10:36:12,181 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 10:36:12,181 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 10:36:12,181 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 10:36:12,181 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-07-21 10:36:12,182 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 10:36:12,182 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 10:36:12,182 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 10:36:12,182 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 10:36:12,182 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 10:36:12,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 10:36:12,183 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 10:36:12,183 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 10:36:12,183 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 10:36:12,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 10:36:12,183 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 10:36:12,184 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 10:36:12,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 10:36:12,184 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 10:36:12,184 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 10:36:12,184 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 10:36:12,184 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 10:36:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 10:36:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 10:36:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 10:36:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 10:36:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 10:36:12,185 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 10:36:12,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 10:36:12,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 10:36:12,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 10:36:12,186 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 10:36:12,186 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 10:36:12,186 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 10:36:12,186 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 10:36:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-07-21 10:36:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-07-21 10:36:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 10:36:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 10:36:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 10:36:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 10:36:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 10:36:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 10:36:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 10:36:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 10:36:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 10:36:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 10:36:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 10:36:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 10:36:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 10:36:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 10:36:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 10:36:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 10:36:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 10:36:12,190 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 10:36:12,190 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 10:36:12,190 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 10:36:12,190 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 10:36:12,190 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 10:36:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 10:36:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 10:36:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 10:36:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 10:36:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 10:36:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-07-21 10:36:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 10:36:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 10:36:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 10:36:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 10:36:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 10:36:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 10:36:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 10:36:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 10:36:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 10:36:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 10:36:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 10:36:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 10:36:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 10:36:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 10:36:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 10:36:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 10:36:12,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 10:36:13,358 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 10:36:13,358 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 10:36:13,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:36:13 BoogieIcfgContainer [2020-07-21 10:36:13,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 10:36:13,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 10:36:13,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 10:36:13,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 10:36:13,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:36:11" (1/3) ... [2020-07-21 10:36:13,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25092a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:36:13, skipping insertion in model container [2020-07-21 10:36:13,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:36:12" (2/3) ... [2020-07-21 10:36:13,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25092a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:36:13, skipping insertion in model container [2020-07-21 10:36:13,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:36:13" (3/3) ... [2020-07-21 10:36:13,372 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product41.cil.c [2020-07-21 10:36:13,382 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 10:36:13,390 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 10:36:13,404 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 10:36:13,430 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 10:36:13,430 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 10:36:13,430 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 10:36:13,431 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 10:36:13,431 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 10:36:13,431 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 10:36:13,431 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 10:36:13,431 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 10:36:13,458 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2020-07-21 10:36:13,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-21 10:36:13,468 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:36:13,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:36:13,469 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:36:13,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:36:13,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1966863296, now seen corresponding path program 1 times [2020-07-21 10:36:13,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:36:13,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370565494] [2020-07-21 10:36:13,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:36:13,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 10:36:13,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:36:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:36:13,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:36:13,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370565494] [2020-07-21 10:36:13,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:36:13,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 10:36:13,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402679252] [2020-07-21 10:36:13,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 10:36:13,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:36:13,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 10:36:13,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 10:36:13,804 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 2 states. [2020-07-21 10:36:13,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:36:13,845 INFO L93 Difference]: Finished difference Result 240 states and 299 transitions. [2020-07-21 10:36:13,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 10:36:13,846 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2020-07-21 10:36:13,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:36:13,859 INFO L225 Difference]: With dead ends: 240 [2020-07-21 10:36:13,859 INFO L226 Difference]: Without dead ends: 122 [2020-07-21 10:36:13,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 10:36:13,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-21 10:36:13,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-07-21 10:36:13,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-07-21 10:36:13,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 143 transitions. [2020-07-21 10:36:13,917 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 143 transitions. Word has length 51 [2020-07-21 10:36:13,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:36:13,918 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 143 transitions. [2020-07-21 10:36:13,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 10:36:13,918 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 143 transitions. [2020-07-21 10:36:13,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-21 10:36:13,922 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:36:13,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:36:14,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:14,137 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:36:14,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:36:14,138 INFO L82 PathProgramCache]: Analyzing trace with hash 335710898, now seen corresponding path program 1 times [2020-07-21 10:36:14,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:36:14,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420355577] [2020-07-21 10:36:14,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:36:14,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 10:36:14,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:36:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:36:14,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:36:14,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420355577] [2020-07-21 10:36:14,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:36:14,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 10:36:14,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54926088] [2020-07-21 10:36:14,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 10:36:14,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:36:14,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 10:36:14,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 10:36:14,427 INFO L87 Difference]: Start difference. First operand 122 states and 143 transitions. Second operand 3 states. [2020-07-21 10:36:14,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:36:14,458 INFO L93 Difference]: Finished difference Result 216 states and 261 transitions. [2020-07-21 10:36:14,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 10:36:14,464 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-21 10:36:14,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:36:14,466 INFO L225 Difference]: With dead ends: 216 [2020-07-21 10:36:14,467 INFO L226 Difference]: Without dead ends: 122 [2020-07-21 10:36:14,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 10:36:14,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-21 10:36:14,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-07-21 10:36:14,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-07-21 10:36:14,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2020-07-21 10:36:14,485 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 52 [2020-07-21 10:36:14,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:36:14,486 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2020-07-21 10:36:14,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 10:36:14,486 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2020-07-21 10:36:14,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-21 10:36:14,489 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:36:14,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:36:14,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:14,705 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:36:14,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:36:14,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1748806687, now seen corresponding path program 1 times [2020-07-21 10:36:14,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:36:14,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082632830] [2020-07-21 10:36:14,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:36:14,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 10:36:14,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:36:14,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:36:14,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:36:14,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082632830] [2020-07-21 10:36:14,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:36:14,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 10:36:14,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699965203] [2020-07-21 10:36:14,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 10:36:14,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:36:14,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 10:36:14,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 10:36:14,915 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand 3 states. [2020-07-21 10:36:14,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:36:14,931 INFO L93 Difference]: Finished difference Result 189 states and 219 transitions. [2020-07-21 10:36:14,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 10:36:14,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-07-21 10:36:14,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:36:14,934 INFO L225 Difference]: With dead ends: 189 [2020-07-21 10:36:14,934 INFO L226 Difference]: Without dead ends: 113 [2020-07-21 10:36:14,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 10:36:14,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-07-21 10:36:14,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-07-21 10:36:14,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-07-21 10:36:14,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2020-07-21 10:36:14,947 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 60 [2020-07-21 10:36:14,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:36:14,947 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2020-07-21 10:36:14,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 10:36:14,948 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2020-07-21 10:36:14,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-21 10:36:14,950 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:36:14,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:36:15,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:15,164 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:36:15,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:36:15,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1730792410, now seen corresponding path program 1 times [2020-07-21 10:36:15,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:36:15,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108013122] [2020-07-21 10:36:15,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:36:15,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 10:36:15,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:36:15,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:36:15,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:36:15,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108013122] [2020-07-21 10:36:15,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:36:15,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 10:36:15,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35678664] [2020-07-21 10:36:15,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 10:36:15,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:36:15,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 10:36:15,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 10:36:15,376 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand 3 states. [2020-07-21 10:36:15,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:36:15,424 INFO L93 Difference]: Finished difference Result 198 states and 236 transitions. [2020-07-21 10:36:15,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 10:36:15,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-07-21 10:36:15,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:36:15,428 INFO L225 Difference]: With dead ends: 198 [2020-07-21 10:36:15,429 INFO L226 Difference]: Without dead ends: 195 [2020-07-21 10:36:15,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 10:36:15,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-07-21 10:36:15,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2020-07-21 10:36:15,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-07-21 10:36:15,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 233 transitions. [2020-07-21 10:36:15,468 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 233 transitions. Word has length 64 [2020-07-21 10:36:15,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:36:15,469 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 233 transitions. [2020-07-21 10:36:15,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 10:36:15,470 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 233 transitions. [2020-07-21 10:36:15,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-07-21 10:36:15,476 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:36:15,476 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:36:15,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:15,678 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:36:15,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:36:15,679 INFO L82 PathProgramCache]: Analyzing trace with hash 908631976, now seen corresponding path program 1 times [2020-07-21 10:36:15,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:36:15,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841039412] [2020-07-21 10:36:15,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:36:15,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 10:36:15,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:36:15,919 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 10:36:15,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:36:15,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841039412] [2020-07-21 10:36:15,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:36:15,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 10:36:15,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665658805] [2020-07-21 10:36:15,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 10:36:15,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:36:15,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 10:36:15,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-21 10:36:15,922 INFO L87 Difference]: Start difference. First operand 195 states and 233 transitions. Second operand 7 states. [2020-07-21 10:36:16,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:36:16,623 INFO L93 Difference]: Finished difference Result 459 states and 586 transitions. [2020-07-21 10:36:16,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 10:36:16,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 102 [2020-07-21 10:36:16,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:36:16,630 INFO L225 Difference]: With dead ends: 459 [2020-07-21 10:36:16,630 INFO L226 Difference]: Without dead ends: 292 [2020-07-21 10:36:16,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-07-21 10:36:16,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-07-21 10:36:16,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 268. [2020-07-21 10:36:16,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-07-21 10:36:16,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 326 transitions. [2020-07-21 10:36:16,692 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 326 transitions. Word has length 102 [2020-07-21 10:36:16,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:36:16,693 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 326 transitions. [2020-07-21 10:36:16,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 10:36:16,693 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 326 transitions. [2020-07-21 10:36:16,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-07-21 10:36:16,698 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:36:16,698 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:36:16,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:16,913 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:36:16,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:36:16,914 INFO L82 PathProgramCache]: Analyzing trace with hash 185980349, now seen corresponding path program 1 times [2020-07-21 10:36:16,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:36:16,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922607311] [2020-07-21 10:36:16,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:36:17,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 10:36:17,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:36:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-21 10:36:17,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:36:17,418 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-07-21 10:36:17,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922607311] [2020-07-21 10:36:17,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 10:36:17,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2020-07-21 10:36:17,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602811265] [2020-07-21 10:36:17,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 10:36:17,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:36:17,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 10:36:17,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 10:36:17,443 INFO L87 Difference]: Start difference. First operand 268 states and 326 transitions. Second operand 6 states. [2020-07-21 10:36:17,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:36:17,659 INFO L93 Difference]: Finished difference Result 711 states and 904 transitions. [2020-07-21 10:36:17,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 10:36:17,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-07-21 10:36:17,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:36:17,664 INFO L225 Difference]: With dead ends: 711 [2020-07-21 10:36:17,665 INFO L226 Difference]: Without dead ends: 471 [2020-07-21 10:36:17,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 267 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-07-21 10:36:17,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-07-21 10:36:17,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 391. [2020-07-21 10:36:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-07-21 10:36:17,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 474 transitions. [2020-07-21 10:36:17,702 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 474 transitions. Word has length 136 [2020-07-21 10:36:17,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:36:17,702 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 474 transitions. [2020-07-21 10:36:17,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 10:36:17,703 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 474 transitions. [2020-07-21 10:36:17,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-07-21 10:36:17,706 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:36:17,706 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:36:17,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:17,921 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:36:17,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:36:17,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1600552473, now seen corresponding path program 1 times [2020-07-21 10:36:17,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:36:17,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878869613] [2020-07-21 10:36:17,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:36:18,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 10:36:18,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:36:18,176 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-21 10:36:18,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:36:18,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878869613] [2020-07-21 10:36:18,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:36:18,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 10:36:18,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755619495] [2020-07-21 10:36:18,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 10:36:18,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:36:18,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 10:36:18,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 10:36:18,180 INFO L87 Difference]: Start difference. First operand 391 states and 474 transitions. Second operand 8 states. [2020-07-21 10:36:18,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:36:18,478 INFO L93 Difference]: Finished difference Result 730 states and 899 transitions. [2020-07-21 10:36:18,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 10:36:18,482 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-07-21 10:36:18,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:36:18,488 INFO L225 Difference]: With dead ends: 730 [2020-07-21 10:36:18,488 INFO L226 Difference]: Without dead ends: 367 [2020-07-21 10:36:18,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 10:36:18,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-07-21 10:36:18,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 363. [2020-07-21 10:36:18,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-07-21 10:36:18,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 429 transitions. [2020-07-21 10:36:18,521 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 429 transitions. Word has length 140 [2020-07-21 10:36:18,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:36:18,521 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 429 transitions. [2020-07-21 10:36:18,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 10:36:18,522 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 429 transitions. [2020-07-21 10:36:18,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-07-21 10:36:18,525 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:36:18,525 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:36:18,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:18,739 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:36:18,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:36:18,740 INFO L82 PathProgramCache]: Analyzing trace with hash 508020119, now seen corresponding path program 1 times [2020-07-21 10:36:18,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:36:18,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599833320] [2020-07-21 10:36:18,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:36:18,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 10:36:18,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:36:19,022 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 64 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-07-21 10:36:19,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:36:19,198 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:36:19,214 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:36:19,247 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:36:19,318 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:36:19,342 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:36:19,465 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 44 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-07-21 10:36:19,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599833320] [2020-07-21 10:36:19,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 10:36:19,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 10 [2020-07-21 10:36:19,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976425331] [2020-07-21 10:36:19,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 10:36:19,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:36:19,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 10:36:19,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-07-21 10:36:19,469 INFO L87 Difference]: Start difference. First operand 363 states and 429 transitions. Second operand 10 states. [2020-07-21 10:36:20,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:36:20,873 INFO L93 Difference]: Finished difference Result 1605 states and 2282 transitions. [2020-07-21 10:36:20,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-21 10:36:20,874 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 175 [2020-07-21 10:36:20,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:36:20,889 INFO L225 Difference]: With dead ends: 1605 [2020-07-21 10:36:20,889 INFO L226 Difference]: Without dead ends: 1270 [2020-07-21 10:36:20,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 335 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2020-07-21 10:36:20,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2020-07-21 10:36:20,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 984. [2020-07-21 10:36:20,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 984 states. [2020-07-21 10:36:20,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1216 transitions. [2020-07-21 10:36:21,029 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1216 transitions. Word has length 175 [2020-07-21 10:36:21,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:36:21,030 INFO L479 AbstractCegarLoop]: Abstraction has 984 states and 1216 transitions. [2020-07-21 10:36:21,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 10:36:21,030 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1216 transitions. [2020-07-21 10:36:21,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-07-21 10:36:21,039 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:36:21,039 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:36:21,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:21,253 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:36:21,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:36:21,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1528483031, now seen corresponding path program 1 times [2020-07-21 10:36:21,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:36:21,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559791506] [2020-07-21 10:36:21,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:36:21,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 10:36:21,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:36:21,528 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-07-21 10:36:21,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:36:21,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559791506] [2020-07-21 10:36:21,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:36:21,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 10:36:21,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492512896] [2020-07-21 10:36:21,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 10:36:21,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:36:21,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 10:36:21,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-21 10:36:21,530 INFO L87 Difference]: Start difference. First operand 984 states and 1216 transitions. Second operand 8 states. [2020-07-21 10:36:22,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:36:22,995 INFO L93 Difference]: Finished difference Result 2745 states and 3615 transitions. [2020-07-21 10:36:22,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-21 10:36:22,996 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 183 [2020-07-21 10:36:22,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:36:23,009 INFO L225 Difference]: With dead ends: 2745 [2020-07-21 10:36:23,010 INFO L226 Difference]: Without dead ends: 1789 [2020-07-21 10:36:23,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-07-21 10:36:23,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2020-07-21 10:36:23,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1583. [2020-07-21 10:36:23,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-07-21 10:36:23,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2014 transitions. [2020-07-21 10:36:23,124 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2014 transitions. Word has length 183 [2020-07-21 10:36:23,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:36:23,124 INFO L479 AbstractCegarLoop]: Abstraction has 1583 states and 2014 transitions. [2020-07-21 10:36:23,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 10:36:23,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2014 transitions. [2020-07-21 10:36:23,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-07-21 10:36:23,133 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:36:23,133 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:36:23,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:23,348 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:36:23,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:36:23,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1894223513, now seen corresponding path program 1 times [2020-07-21 10:36:23,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:36:23,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110953363] [2020-07-21 10:36:23,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:36:23,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 10:36:23,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:36:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-07-21 10:36:23,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:36:23,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110953363] [2020-07-21 10:36:23,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:36:23,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 10:36:23,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530061998] [2020-07-21 10:36:23,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 10:36:23,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:36:23,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 10:36:23,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 10:36:23,634 INFO L87 Difference]: Start difference. First operand 1583 states and 2014 transitions. Second operand 6 states. [2020-07-21 10:36:23,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:36:23,741 INFO L93 Difference]: Finished difference Result 3222 states and 4293 transitions. [2020-07-21 10:36:23,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 10:36:23,741 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2020-07-21 10:36:23,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:36:23,754 INFO L225 Difference]: With dead ends: 3222 [2020-07-21 10:36:23,754 INFO L226 Difference]: Without dead ends: 1667 [2020-07-21 10:36:23,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 10:36:23,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2020-07-21 10:36:23,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1643. [2020-07-21 10:36:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1643 states. [2020-07-21 10:36:23,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 2085 transitions. [2020-07-21 10:36:23,919 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 2085 transitions. Word has length 175 [2020-07-21 10:36:23,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:36:23,920 INFO L479 AbstractCegarLoop]: Abstraction has 1643 states and 2085 transitions. [2020-07-21 10:36:23,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 10:36:23,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 2085 transitions. [2020-07-21 10:36:23,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-07-21 10:36:23,928 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:36:23,928 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:36:24,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:24,143 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:36:24,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:36:24,143 INFO L82 PathProgramCache]: Analyzing trace with hash 672673333, now seen corresponding path program 1 times [2020-07-21 10:36:24,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:36:24,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189529957] [2020-07-21 10:36:24,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:36:24,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 10:36:24,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:36:24,382 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-07-21 10:36:24,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:36:24,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189529957] [2020-07-21 10:36:24,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:36:24,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 10:36:24,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828174193] [2020-07-21 10:36:24,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 10:36:24,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:36:24,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 10:36:24,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 10:36:24,385 INFO L87 Difference]: Start difference. First operand 1643 states and 2085 transitions. Second operand 5 states. [2020-07-21 10:36:24,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:36:24,465 INFO L93 Difference]: Finished difference Result 2980 states and 3870 transitions. [2020-07-21 10:36:24,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 10:36:24,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-07-21 10:36:24,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:36:24,477 INFO L225 Difference]: With dead ends: 2980 [2020-07-21 10:36:24,477 INFO L226 Difference]: Without dead ends: 1365 [2020-07-21 10:36:24,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 10:36:24,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2020-07-21 10:36:24,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1344. [2020-07-21 10:36:24,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1344 states. [2020-07-21 10:36:24,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1676 transitions. [2020-07-21 10:36:24,578 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1676 transitions. Word has length 179 [2020-07-21 10:36:24,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:36:24,579 INFO L479 AbstractCegarLoop]: Abstraction has 1344 states and 1676 transitions. [2020-07-21 10:36:24,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 10:36:24,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1676 transitions. [2020-07-21 10:36:24,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-07-21 10:36:24,583 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:36:24,583 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:36:24,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:24,797 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:36:24,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:36:24,797 INFO L82 PathProgramCache]: Analyzing trace with hash -402984640, now seen corresponding path program 1 times [2020-07-21 10:36:24,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:36:24,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000550910] [2020-07-21 10:36:24,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:36:25,074 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:36:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:36:25,178 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:36:25,552 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 10:36:25,552 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 10:36:25,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:36:25,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:36:25 BoogieIcfgContainer [2020-07-21 10:36:25,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 10:36:25,981 INFO L168 Benchmark]: Toolchain (without parser) took 14632.15 ms. Allocated memory was 137.9 MB in the beginning and 417.9 MB in the end (delta: 280.0 MB). Free memory was 99.8 MB in the beginning and 308.5 MB in the end (delta: -208.8 MB). Peak memory consumption was 304.3 MB. Max. memory is 7.1 GB. [2020-07-21 10:36:25,981 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory is still 119.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 10:36:25,982 INFO L168 Benchmark]: CACSL2BoogieTranslator took 670.73 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 99.3 MB in the beginning and 167.9 MB in the end (delta: -68.6 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-07-21 10:36:25,983 INFO L168 Benchmark]: Boogie Preprocessor took 86.27 ms. Allocated memory is still 202.4 MB. Free memory was 167.9 MB in the beginning and 164.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-07-21 10:36:25,984 INFO L168 Benchmark]: RCFGBuilder took 1255.41 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 164.1 MB in the beginning and 193.3 MB in the end (delta: -29.2 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-07-21 10:36:25,984 INFO L168 Benchmark]: TraceAbstraction took 12613.73 ms. Allocated memory was 234.4 MB in the beginning and 417.9 MB in the end (delta: 183.5 MB). Free memory was 193.3 MB in the beginning and 308.5 MB in the end (delta: -115.2 MB). Peak memory consumption was 301.4 MB. Max. memory is 7.1 GB. [2020-07-21 10:36:25,987 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory is still 119.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 670.73 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 99.3 MB in the beginning and 167.9 MB in the end (delta: -68.6 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.27 ms. Allocated memory is still 202.4 MB. Free memory was 167.9 MB in the beginning and 164.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1255.41 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 164.1 MB in the beginning and 193.3 MB in the end (delta: -29.2 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12613.73 ms. Allocated memory was 234.4 MB in the beginning and 417.9 MB in the end (delta: 183.5 MB). Free memory was 193.3 MB in the beginning and 308.5 MB in the end (delta: -115.2 MB). Peak memory consumption was 301.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 830]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L43] int methAndRunningLastTime ; [L251] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L455] int pumpRunning = 0; [L456] int systemActive = 1; [L628] int waterLevel = 1; [L629] int methaneLevelCritical = 0; [L835] int cleanupTimeShifts = 4; VAL [\old(cleanupTimeShifts)=90, \old(head)=54, \old(head)=24, \old(methAndRunningLastTime)=70, \old(methaneLevelCritical)=39, \old(pumpRunning)=52, \old(systemActive)=91, \old(waterLevel)=55, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L909] int retValue_acc ; [L910] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L914] FCALL select_helpers() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L915] FCALL select_features() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L916] CALL, EXPR valid_product() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L817] int retValue_acc ; [L820] retValue_acc = 1 [L821] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L916] RET, EXPR valid_product() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L916] tmp = valid_product() [L918] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L920] FCALL setup() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L921] CALL runTest() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L902] CALL __utac_acc__Specification2_spec__1() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L48] methAndRunningLastTime = 0 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L902] RET __utac_acc__Specification2_spec__1() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L903] CALL test() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L724] int splverifierCounter ; [L725] int tmp ; [L726] int tmp___0 ; [L727] int tmp___1 ; [L728] int tmp___2 ; [L731] splverifierCounter = 0 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L733] COND TRUE 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L735] COND TRUE splverifierCounter < 4 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L741] tmp = __VERIFIER_nondet_int() [L743] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L745] CALL waterRise() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L646] COND TRUE waterLevel < 2 [L647] waterLevel = waterLevel + 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L745] RET waterRise() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L751] tmp___0 = __VERIFIER_nondet_int() [L753] COND FALSE !(\read(tmp___0)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L761] tmp___2 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___2) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L776] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L462] COND FALSE !(\read(pumpRunning)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L469] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L471] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L491] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L494] COND TRUE ! pumpRunning VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L496] CALL, EXPR isHighWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L606] int retValue_acc ; [L607] int tmp ; [L608] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L612] CALL, EXPR isHighWaterSensorDry() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L708] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L711] COND FALSE !(waterLevel < 2) [L715] retValue_acc = 0 [L716] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L612] RET, EXPR isHighWaterSensorDry() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L612] tmp = isHighWaterSensorDry() [L614] COND FALSE !(\read(tmp)) [L617] tmp___0 = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L619] retValue_acc = tmp___0 [L620] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L496] RET, EXPR isHighWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L496] tmp = isHighWaterLevel() [L498] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L500] CALL activatePump() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L525] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L529] CALL, EXPR isMethaneAlarm() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L550] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L554] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L554] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L554] retValue_acc = isMethaneLevelCritical() [L556] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L529] RET, EXPR isMethaneAlarm() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L529] tmp = isMethaneAlarm() [L531] COND FALSE !(\read(tmp)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L535] CALL activatePump__wrappee__highWaterSensor() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L519] pumpRunning = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L535] RET activatePump__wrappee__highWaterSensor() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L500] RET activatePump() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L471] RET processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L477] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L53] int tmp ; [L54] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L58] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=2] [L58] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L58] tmp = isMethaneLevelCritical() [L60] COND FALSE !(\read(tmp)) [L76] methAndRunningLastTime = 0 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L477] RET __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L776] RET timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L733] COND TRUE 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L735] COND TRUE splverifierCounter < 4 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L741] tmp = __VERIFIER_nondet_int() [L743] COND FALSE !(\read(tmp)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=2] [L751] tmp___0 = __VERIFIER_nondet_int() [L753] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=-1, waterLevel=2] [L755] CALL changeMethaneLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L658] COND FALSE !(\read(methaneLevelCritical)) [L661] methaneLevelCritical = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L755] RET changeMethaneLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=-1, waterLevel=2] [L761] tmp___2 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___2) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=-1, waterLevel=2] [L776] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L462] COND TRUE \read(pumpRunning) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L464] CALL lowerWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L634] COND TRUE waterLevel > 0 [L635] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L464] RET lowerWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L469] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L471] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L491] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L494] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L509] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L471] RET processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L477] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L53] int tmp ; [L54] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L58] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L58] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L58] tmp = isMethaneLevelCritical() [L60] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L62] CALL, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L561] int retValue_acc ; [L564] retValue_acc = pumpRunning [L565] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L62] RET, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L62] tmp___0 = isPumpRunning() [L64] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L65] COND FALSE !(\read(methAndRunningLastTime)) [L70] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L477] RET __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L776] RET timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=-1, waterLevel=1] [L733] COND TRUE 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=-1, waterLevel=1] [L735] COND TRUE splverifierCounter < 4 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=-1, waterLevel=1] [L741] tmp = __VERIFIER_nondet_int() [L743] COND FALSE !(\read(tmp)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=-1, waterLevel=1] [L751] tmp___0 = __VERIFIER_nondet_int() [L753] COND FALSE !(\read(tmp___0)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=1] [L761] tmp___2 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___2) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L776] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L462] COND TRUE \read(pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L464] CALL lowerWaterLevel() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L634] COND TRUE waterLevel > 0 [L635] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L464] RET lowerWaterLevel() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L469] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L471] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L491] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L494] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L509] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L471] RET processEnvironment() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L477] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L53] int tmp ; [L54] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L58] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L58] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L58] tmp = isMethaneLevelCritical() [L60] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=0] [L62] CALL, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L561] int retValue_acc ; [L564] retValue_acc = pumpRunning [L565] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L62] RET, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=0] [L62] tmp___0 = isPumpRunning() [L64] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=0] [L65] COND TRUE \read(methAndRunningLastTime) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=0] [L67] CALL __automaton_fail() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L830] __VERIFIER_error() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.3s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1735 SDtfs, 1466 SDslu, 2850 SDs, 0 SdLazy, 2544 SolverSat, 684 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1648 GetRequests, 1577 SyntacticMatches, 11 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1643occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 645 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1496 NumberOfCodeBlocks, 1496 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1615 ConstructedInterpolants, 0 QuantifiedInterpolants, 409555 SizeOfPredicates, 27 NumberOfNonLiveVariables, 9150 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 13 InterpolantComputations, 10 PerfectInterpolantSequences, 634/644 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...