/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 SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 15:42:10,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 15:42:10,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 15:42:10,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 15:42:10,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 15:42:10,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 15:42:10,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 15:42:10,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 15:42:10,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 15:42:10,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 15:42:10,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 15:42:10,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 15:42:10,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 15:42:10,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 15:42:10,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 15:42:10,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 15:42:10,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 15:42:10,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 15:42:10,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 15:42:10,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 15:42:10,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 15:42:10,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 15:42:10,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 15:42:10,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 15:42:10,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 15:42:10,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 15:42:10,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 15:42:10,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 15:42:10,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 15:42:10,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 15:42:10,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 15:42:10,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 15:42:10,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 15:42:10,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 15:42:10,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 15:42:10,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 15:42:10,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 15:42:10,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 15:42:10,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 15:42:10,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 15:42:10,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 15:42:10,798 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 15:42:10,839 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 15:42:10,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 15:42:10,841 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 15:42:10,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 15:42:10,841 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 15:42:10,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 15:42:10,842 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 15:42:10,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 15:42:10,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 15:42:10,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 15:42:10,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 15:42:10,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 15:42:10,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 15:42:10,843 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 15:42:10,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 15:42:10,843 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 15:42:10,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 15:42:10,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 15:42:10,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 15:42:10,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 15:42:10,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 15:42:10,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:42:10,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 15:42:10,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 15:42:10,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 15:42:10,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 15:42:10,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:10,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 15:42:10,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 15:42:10,846 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 -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 15:42:11,109 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 15:42:11,123 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 15:42:11,127 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 15:42:11,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 15:42:11,129 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 15:42:11,130 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c [2020-07-21 15:42:11,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531f5957c/334b68a8c8c14df8a8c971e9c0cba798/FLAGc0ef97c0d [2020-07-21 15:42:11,773 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 15:42:11,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c [2020-07-21 15:42:11,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531f5957c/334b68a8c8c14df8a8c971e9c0cba798/FLAGc0ef97c0d [2020-07-21 15:42:12,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531f5957c/334b68a8c8c14df8a8c971e9c0cba798 [2020-07-21 15:42:12,064 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 15:42:12,067 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 15:42:12,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 15:42:12,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 15:42:12,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 15:42:12,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:42:12" (1/1) ... [2020-07-21 15:42:12,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46df0683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:12, skipping insertion in model container [2020-07-21 15:42:12,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:42:12" (1/1) ... [2020-07-21 15:42:12,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 15:42:12,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 15:42:12,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:42:12,666 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 15:42:12,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:42:12,802 INFO L208 MainTranslator]: Completed translation [2020-07-21 15:42:12,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:12 WrapperNode [2020-07-21 15:42:12,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 15:42:12,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 15:42:12,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 15:42:12,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 15:42:12,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:12" (1/1) ... [2020-07-21 15:42:12,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:12" (1/1) ... [2020-07-21 15:42:12,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:12" (1/1) ... [2020-07-21 15:42:12,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:12" (1/1) ... [2020-07-21 15:42:12,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:12" (1/1) ... [2020-07-21 15:42:12,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:12" (1/1) ... [2020-07-21 15:42:12,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:12" (1/1) ... [2020-07-21 15:42:12,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 15:42:12,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 15:42:12,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 15:42:12,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 15:42:12,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:12" (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 15:42:12,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 15:42:12,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 15:42:12,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 15:42:12,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-07-21 15:42:12,974 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 15:42:12,975 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 15:42:12,975 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 15:42:12,975 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 15:42:12,975 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 15:42:12,975 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 15:42:12,976 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 15:42:12,976 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 15:42:12,977 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 15:42:12,977 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 15:42:12,977 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 15:42:12,978 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 15:42:12,978 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 15:42:12,978 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 15:42:12,978 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 15:42:12,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 15:42:12,979 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 15:42:12,980 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 15:42:12,980 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 15:42:12,980 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-21 15:42:12,980 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 15:42:12,981 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 15:42:12,981 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 15:42:12,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 15:42:12,982 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 15:42:12,982 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 15:42:12,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 15:42:12,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 15:42:12,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 15:42:12,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 15:42:12,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 15:42:12,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 15:42:12,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 15:42:12,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 15:42:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 15:42:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 15:42:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 15:42:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 15:42:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 15:42:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 15:42:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-07-21 15:42:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 15:42:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 15:42:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 15:42:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 15:42:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 15:42:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 15:42:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 15:42:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 15:42:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 15:42:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 15:42:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 15:42:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 15:42:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 15:42:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 15:42:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-21 15:42:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 15:42:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 15:42:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 15:42:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 15:42:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 15:42:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 15:42:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 15:42:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 15:42:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 15:42:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 15:42:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 15:42:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 15:42:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 15:42:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 15:42:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 15:42:12,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 15:42:12,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 15:42:12,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 15:42:12,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 15:42:12,992 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 15:42:12,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 15:42:12,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 15:42:12,993 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 15:42:12,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 15:42:12,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 15:42:12,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 15:42:12,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 15:42:12,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 15:42:12,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 15:42:12,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 15:42:14,040 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 15:42:14,040 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 15:42:14,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:42:14 BoogieIcfgContainer [2020-07-21 15:42:14,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 15:42:14,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 15:42:14,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 15:42:14,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 15:42:14,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:42:12" (1/3) ... [2020-07-21 15:42:14,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c9e993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:42:14, skipping insertion in model container [2020-07-21 15:42:14,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:12" (2/3) ... [2020-07-21 15:42:14,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c9e993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:42:14, skipping insertion in model container [2020-07-21 15:42:14,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:42:14" (3/3) ... [2020-07-21 15:42:14,054 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product34.cil.c [2020-07-21 15:42:14,065 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 15:42:14,073 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 15:42:14,088 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 15:42:14,113 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 15:42:14,113 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 15:42:14,113 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 15:42:14,113 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 15:42:14,114 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 15:42:14,114 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 15:42:14,114 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 15:42:14,114 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 15:42:14,137 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-07-21 15:42:14,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 15:42:14,146 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:14,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:42:14,148 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:14,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:14,155 INFO L82 PathProgramCache]: Analyzing trace with hash -368094870, now seen corresponding path program 1 times [2020-07-21 15:42:14,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:14,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210747534] [2020-07-21 15:42:14,165 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 15:42:14,544 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:42:14,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:14,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 15:42:14,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:14,586 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 15:42:14,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:42:14,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210747534] [2020-07-21 15:42:14,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:42:14,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 15:42:14,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252185435] [2020-07-21 15:42:14,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 15:42:14,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:14,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 15:42:14,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:42:14,613 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 2 states. [2020-07-21 15:42:14,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:14,654 INFO L93 Difference]: Finished difference Result 218 states and 271 transitions. [2020-07-21 15:42:14,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 15:42:14,656 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-21 15:42:14,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:14,668 INFO L225 Difference]: With dead ends: 218 [2020-07-21 15:42:14,669 INFO L226 Difference]: Without dead ends: 109 [2020-07-21 15:42:14,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 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 15:42:14,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-21 15:42:14,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-07-21 15:42:14,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-07-21 15:42:14,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-07-21 15:42:14,731 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 46 [2020-07-21 15:42:14,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:14,731 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-07-21 15:42:14,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 15:42:14,732 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-07-21 15:42:14,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 15:42:14,735 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:14,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:42:14,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:14,949 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:14,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:14,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1630578526, now seen corresponding path program 1 times [2020-07-21 15:42:14,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:14,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862173110] [2020-07-21 15:42:14,951 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 15:42:15,280 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:42:15,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:15,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 15:42:15,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:15,324 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 15:42:15,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:42:15,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862173110] [2020-07-21 15:42:15,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:42:15,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:42:15,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280080410] [2020-07-21 15:42:15,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:42:15,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:15,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:42:15,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:42:15,328 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 3 states. [2020-07-21 15:42:15,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:15,348 INFO L93 Difference]: Finished difference Result 163 states and 189 transitions. [2020-07-21 15:42:15,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:42:15,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 15:42:15,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:15,351 INFO L225 Difference]: With dead ends: 163 [2020-07-21 15:42:15,351 INFO L226 Difference]: Without dead ends: 100 [2020-07-21 15:42:15,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 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 15:42:15,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-07-21 15:42:15,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-07-21 15:42:15,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-07-21 15:42:15,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-07-21 15:42:15,366 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 47 [2020-07-21 15:42:15,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:15,367 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-07-21 15:42:15,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:42:15,367 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-07-21 15:42:15,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-21 15:42:15,369 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:15,369 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 15:42:15,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:15,584 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:15,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:15,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1910957979, now seen corresponding path program 1 times [2020-07-21 15:42:15,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:15,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188911249] [2020-07-21 15:42:15,587 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 15:42:15,967 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:42:15,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:15,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 15:42:15,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:16,003 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 15:42:16,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:42:16,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188911249] [2020-07-21 15:42:16,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:42:16,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:42:16,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041251559] [2020-07-21 15:42:16,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:42:16,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:16,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:42:16,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:42:16,007 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 3 states. [2020-07-21 15:42:16,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:16,026 INFO L93 Difference]: Finished difference Result 176 states and 207 transitions. [2020-07-21 15:42:16,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:42:16,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-21 15:42:16,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:16,029 INFO L225 Difference]: With dead ends: 176 [2020-07-21 15:42:16,029 INFO L226 Difference]: Without dead ends: 100 [2020-07-21 15:42:16,031 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 15:42:16,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-07-21 15:42:16,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-07-21 15:42:16,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-07-21 15:42:16,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-07-21 15:42:16,045 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 52 [2020-07-21 15:42:16,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:16,045 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-07-21 15:42:16,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:42:16,046 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-07-21 15:42:16,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-21 15:42:16,048 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:16,048 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 15:42:16,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:16,263 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:16,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:16,264 INFO L82 PathProgramCache]: Analyzing trace with hash 2015382800, now seen corresponding path program 1 times [2020-07-21 15:42:16,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:16,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314564992] [2020-07-21 15:42:16,265 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 15:42:16,578 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:42:16,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:16,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 15:42:16,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:16,639 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 15:42:16,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:42:16,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314564992] [2020-07-21 15:42:16,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:42:16,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:42:16,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443042585] [2020-07-21 15:42:16,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:42:16,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:16,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:42:16,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:42:16,642 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 6 states. [2020-07-21 15:42:16,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:16,872 INFO L93 Difference]: Finished difference Result 241 states and 294 transitions. [2020-07-21 15:42:16,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 15:42:16,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-07-21 15:42:16,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:16,876 INFO L225 Difference]: With dead ends: 241 [2020-07-21 15:42:16,877 INFO L226 Difference]: Without dead ends: 165 [2020-07-21 15:42:16,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 15:42:16,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-07-21 15:42:16,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-07-21 15:42:16,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-07-21 15:42:16,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 198 transitions. [2020-07-21 15:42:16,901 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 198 transitions. Word has length 60 [2020-07-21 15:42:16,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:16,902 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 198 transitions. [2020-07-21 15:42:16,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:42:16,902 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 198 transitions. [2020-07-21 15:42:16,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-21 15:42:16,905 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:16,905 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 15:42:17,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:17,119 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:17,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:17,120 INFO L82 PathProgramCache]: Analyzing trace with hash -726769290, now seen corresponding path program 1 times [2020-07-21 15:42:17,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:17,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613571994] [2020-07-21 15:42:17,121 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 15:42:17,391 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:42:17,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:17,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 15:42:17,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:17,421 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 15:42:17,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:42:17,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613571994] [2020-07-21 15:42:17,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:42:17,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:42:17,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664115227] [2020-07-21 15:42:17,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:42:17,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:17,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:42:17,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:42:17,424 INFO L87 Difference]: Start difference. First operand 165 states and 198 transitions. Second operand 3 states. [2020-07-21 15:42:17,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:17,452 INFO L93 Difference]: Finished difference Result 394 states and 496 transitions. [2020-07-21 15:42:17,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:42:17,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-07-21 15:42:17,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:17,456 INFO L225 Difference]: With dead ends: 394 [2020-07-21 15:42:17,456 INFO L226 Difference]: Without dead ends: 253 [2020-07-21 15:42:17,457 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 15:42:17,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-07-21 15:42:17,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 250. [2020-07-21 15:42:17,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-07-21 15:42:17,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 308 transitions. [2020-07-21 15:42:17,499 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 308 transitions. Word has length 64 [2020-07-21 15:42:17,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:17,499 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 308 transitions. [2020-07-21 15:42:17,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:42:17,500 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 308 transitions. [2020-07-21 15:42:17,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-07-21 15:42:17,506 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:17,506 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:17,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:17,724 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:17,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:17,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1676762157, now seen corresponding path program 1 times [2020-07-21 15:42:17,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:17,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206487183] [2020-07-21 15:42:17,726 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 15:42:18,004 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:42:18,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:18,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 15:42:18,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:18,053 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 15:42:18,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:42:18,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206487183] [2020-07-21 15:42:18,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:42:18,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:42:18,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541382518] [2020-07-21 15:42:18,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:42:18,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:18,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:42:18,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:42:18,056 INFO L87 Difference]: Start difference. First operand 250 states and 308 transitions. Second operand 6 states. [2020-07-21 15:42:18,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:18,098 INFO L93 Difference]: Finished difference Result 486 states and 617 transitions. [2020-07-21 15:42:18,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 15:42:18,099 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2020-07-21 15:42:18,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:18,102 INFO L225 Difference]: With dead ends: 486 [2020-07-21 15:42:18,102 INFO L226 Difference]: Without dead ends: 260 [2020-07-21 15:42:18,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 106 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 15:42:18,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-07-21 15:42:18,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2020-07-21 15:42:18,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-07-21 15:42:18,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 319 transitions. [2020-07-21 15:42:18,125 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 319 transitions. Word has length 111 [2020-07-21 15:42:18,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:18,126 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 319 transitions. [2020-07-21 15:42:18,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:42:18,126 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 319 transitions. [2020-07-21 15:42:18,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-07-21 15:42:18,128 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:18,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:18,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:18,344 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:18,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:18,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1622369259, now seen corresponding path program 1 times [2020-07-21 15:42:18,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:18,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712236738] [2020-07-21 15:42:18,347 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 15:42:18,521 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:42:18,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:18,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 15:42:18,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:18,562 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 15:42:18,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:42:18,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712236738] [2020-07-21 15:42:18,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:42:18,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 15:42:18,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546825859] [2020-07-21 15:42:18,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 15:42:18,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:18,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 15:42:18,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:42:18,567 INFO L87 Difference]: Start difference. First operand 260 states and 319 transitions. Second operand 5 states. [2020-07-21 15:42:18,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:18,598 INFO L93 Difference]: Finished difference Result 494 states and 628 transitions. [2020-07-21 15:42:18,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 15:42:18,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-07-21 15:42:18,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:18,602 INFO L225 Difference]: With dead ends: 494 [2020-07-21 15:42:18,602 INFO L226 Difference]: Without dead ends: 258 [2020-07-21 15:42:18,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 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 15:42:18,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-07-21 15:42:18,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2020-07-21 15:42:18,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-07-21 15:42:18,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 313 transitions. [2020-07-21 15:42:18,658 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 313 transitions. Word has length 111 [2020-07-21 15:42:18,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:18,659 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 313 transitions. [2020-07-21 15:42:18,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 15:42:18,659 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 313 transitions. [2020-07-21 15:42:18,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-07-21 15:42:18,662 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:18,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:18,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:18,863 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:18,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:18,864 INFO L82 PathProgramCache]: Analyzing trace with hash -48144310, now seen corresponding path program 1 times [2020-07-21 15:42:18,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:18,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531089465] [2020-07-21 15:42:18,865 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 15:42:19,039 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:42:19,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:19,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 15:42:19,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:42:19,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:42:19,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531089465] [2020-07-21 15:42:19,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:42:19,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:42:19,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566111540] [2020-07-21 15:42:19,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:42:19,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:19,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:42:19,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:42:19,088 INFO L87 Difference]: Start difference. First operand 258 states and 313 transitions. Second operand 6 states. [2020-07-21 15:42:19,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:19,809 INFO L93 Difference]: Finished difference Result 659 states and 856 transitions. [2020-07-21 15:42:19,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 15:42:19,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2020-07-21 15:42:19,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:19,814 INFO L225 Difference]: With dead ends: 659 [2020-07-21 15:42:19,814 INFO L226 Difference]: Without dead ends: 425 [2020-07-21 15:42:19,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 15:42:19,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-07-21 15:42:19,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 409. [2020-07-21 15:42:19,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-07-21 15:42:19,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 503 transitions. [2020-07-21 15:42:19,867 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 503 transitions. Word has length 111 [2020-07-21 15:42:19,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:19,868 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 503 transitions. [2020-07-21 15:42:19,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:42:19,868 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 503 transitions. [2020-07-21 15:42:19,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-07-21 15:42:19,870 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:19,870 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:20,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:20,086 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:20,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:20,087 INFO L82 PathProgramCache]: Analyzing trace with hash 782485200, now seen corresponding path program 1 times [2020-07-21 15:42:20,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:20,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814681236] [2020-07-21 15:42:20,089 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 15:42:20,335 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:42:20,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:20,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 15:42:20,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:42:20,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:42:20,697 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 15:42:20,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814681236] [2020-07-21 15:42:20,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 15:42:20,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2020-07-21 15:42:20,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945602430] [2020-07-21 15:42:20,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 15:42:20,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:20,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 15:42:20,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-21 15:42:20,700 INFO L87 Difference]: Start difference. First operand 409 states and 503 transitions. Second operand 12 states. [2020-07-21 15:42:22,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:22,064 INFO L93 Difference]: Finished difference Result 1063 states and 1433 transitions. [2020-07-21 15:42:22,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-21 15:42:22,065 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 115 [2020-07-21 15:42:22,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:22,070 INFO L225 Difference]: With dead ends: 1063 [2020-07-21 15:42:22,071 INFO L226 Difference]: Without dead ends: 678 [2020-07-21 15:42:22,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 218 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-07-21 15:42:22,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2020-07-21 15:42:22,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 515. [2020-07-21 15:42:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2020-07-21 15:42:22,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 634 transitions. [2020-07-21 15:42:22,112 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 634 transitions. Word has length 115 [2020-07-21 15:42:22,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:22,113 INFO L479 AbstractCegarLoop]: Abstraction has 515 states and 634 transitions. [2020-07-21 15:42:22,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 15:42:22,113 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 634 transitions. [2020-07-21 15:42:22,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-07-21 15:42:22,116 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:22,117 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:42:22,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:22,330 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:22,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:22,331 INFO L82 PathProgramCache]: Analyzing trace with hash 218697075, now seen corresponding path program 2 times [2020-07-21 15:42:22,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:22,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105585930] [2020-07-21 15:42:22,332 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 15:42:22,644 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:42:22,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 15:42:22,645 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:42:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 15:42:22,758 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:42:23,123 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 15:42:23,123 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 15:42:23,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:23,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:42:23 BoogieIcfgContainer [2020-07-21 15:42:23,580 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 15:42:23,583 INFO L168 Benchmark]: Toolchain (without parser) took 11516.30 ms. Allocated memory was 138.4 MB in the beginning and 353.4 MB in the end (delta: 215.0 MB). Free memory was 100.7 MB in the beginning and 242.9 MB in the end (delta: -142.3 MB). Peak memory consumption was 72.7 MB. Max. memory is 7.1 GB. [2020-07-21 15:42:23,584 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 15:42:23,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 734.99 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 100.2 MB in the beginning and 173.1 MB in the end (delta: -72.9 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2020-07-21 15:42:23,586 INFO L168 Benchmark]: Boogie Preprocessor took 88.77 ms. Allocated memory is still 203.4 MB. Free memory was 173.1 MB in the beginning and 169.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-07-21 15:42:23,594 INFO L168 Benchmark]: RCFGBuilder took 1153.29 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 169.1 MB in the beginning and 202.6 MB in the end (delta: -33.5 MB). Peak memory consumption was 86.0 MB. Max. memory is 7.1 GB. [2020-07-21 15:42:23,598 INFO L168 Benchmark]: TraceAbstraction took 9533.55 ms. Allocated memory was 235.9 MB in the beginning and 353.4 MB in the end (delta: 117.4 MB). Free memory was 202.6 MB in the beginning and 242.9 MB in the end (delta: -40.4 MB). Peak memory consumption was 77.1 MB. Max. memory is 7.1 GB. [2020-07-21 15:42:23,604 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 734.99 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 100.2 MB in the beginning and 173.1 MB in the end (delta: -72.9 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.77 ms. Allocated memory is still 203.4 MB. Free memory was 173.1 MB in the beginning and 169.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1153.29 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 169.1 MB in the beginning and 202.6 MB in the end (delta: -33.5 MB). Peak memory consumption was 86.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9533.55 ms. Allocated memory was 235.9 MB in the beginning and 353.4 MB in the end (delta: 117.4 MB). Free memory was 202.6 MB in the beginning and 242.9 MB in the end (delta: -40.4 MB). Peak memory consumption was 77.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 540]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L69] int cleanupTimeShifts = 4; [L282] int pumpRunning = 0; [L283] int systemActive = 1; [L442] int waterLevel = 1; [L443] int methaneLevelCritical = 0; [L714] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [\old(cleanupTimeShifts)=53, \old(head)=35, \old(head)=96, \old(methaneLevelCritical)=63, \old(pumpRunning)=94, \old(systemActive)=37, \old(waterLevel)=68, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L150] int retValue_acc ; [L151] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L155] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L156] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L157] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L199] int retValue_acc ; [L202] retValue_acc = 1 [L203] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L157] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L157] tmp = valid_product() [L159] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L161] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L162] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L141] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L210] int splverifierCounter ; [L211] int tmp ; [L212] int tmp___0 ; [L213] int tmp___1 ; [L214] int tmp___2 ; [L217] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L219] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L221] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L227] tmp = __VERIFIER_nondet_int() [L229] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L231] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L460] COND TRUE waterLevel < 2 [L461] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L231] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L237] tmp___0 = __VERIFIER_nondet_int() [L239] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, waterLevel=2] [L247] tmp___2 = __VERIFIER_nondet_int() [L249] COND FALSE !(\read(tmp___2)) [L255] tmp___1 = __VERIFIER_nondet_int() [L257] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L264] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L289] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L296] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L298] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L318] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L321] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L323] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L415] int retValue_acc ; [L416] int tmp ; [L417] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L421] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L522] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L525] COND FALSE !(waterLevel < 2) [L529] retValue_acc = 0 [L530] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L421] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L421] tmp = isHighWaterSensorDry() [L423] COND FALSE !(\read(tmp)) [L426] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L428] retValue_acc = tmp___0 [L429] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L323] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L323] tmp = isHighWaterLevel() [L325] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L327] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L346] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L327] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L298] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L304] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L44] int tmp ; [L45] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L49] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L49] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L304] RET __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L264] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L219] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L221] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L227] tmp = __VERIFIER_nondet_int() [L229] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L237] tmp___0 = __VERIFIER_nondet_int() [L239] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L247] tmp___2 = __VERIFIER_nondet_int() [L249] COND FALSE !(\read(tmp___2)) [L255] tmp___1 = __VERIFIER_nondet_int() [L257] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L264] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L289] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L291] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L448] COND TRUE waterLevel > 0 [L449] waterLevel = waterLevel - 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L291] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L296] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L298] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L318] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L321] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L336] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L298] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L304] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L44] int tmp ; [L45] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L49] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L49] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=1, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L304] RET __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L264] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L219] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L221] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L227] tmp = __VERIFIER_nondet_int() [L229] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L237] tmp___0 = __VERIFIER_nondet_int() [L239] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L247] tmp___2 = __VERIFIER_nondet_int() [L249] COND FALSE !(\read(tmp___2)) [L255] tmp___1 = __VERIFIER_nondet_int() [L257] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L264] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L289] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L291] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L448] COND TRUE waterLevel > 0 [L449] waterLevel = waterLevel - 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L291] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L296] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L298] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L318] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L321] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L336] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L298] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L304] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L44] int tmp ; [L45] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L49] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L49] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, getWaterLevel()=0, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L53] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L370] int retValue_acc ; [L373] retValue_acc = pumpRunning [L374] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L53] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=0] [L57] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L540] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 219 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.2s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1145 SDtfs, 781 SDslu, 1871 SDs, 0 SdLazy, 1469 SolverSat, 409 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 844 GetRequests, 795 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=515occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 182 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 868 NumberOfCodeBlocks, 758 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 822 ConstructedInterpolants, 0 QuantifiedInterpolants, 133598 SizeOfPredicates, 32 NumberOfNonLiveVariables, 6327 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 112/125 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...