/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_spec1_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 15:39:34,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 15:39:34,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 15:39:34,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 15:39:34,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 15:39:34,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 15:39:34,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 15:39:34,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 15:39:34,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 15:39:34,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 15:39:34,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 15:39:34,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 15:39:34,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 15:39:34,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 15:39:34,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 15:39:34,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 15:39:34,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 15:39:34,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 15:39:34,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 15:39:34,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 15:39:34,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 15:39:34,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 15:39:34,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 15:39:34,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 15:39:34,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 15:39:34,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 15:39:34,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 15:39:34,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 15:39:34,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 15:39:34,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 15:39:34,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 15:39:34,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 15:39:34,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 15:39:34,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 15:39:34,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 15:39:34,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 15:39:34,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 15:39:34,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 15:39:34,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 15:39:34,763 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 15:39:34,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 15:39:34,764 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 15:39:34,779 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 15:39:34,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 15:39:34,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 15:39:34,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 15:39:34,781 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 15:39:34,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 15:39:34,781 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 15:39:34,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 15:39:34,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 15:39:34,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 15:39:34,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 15:39:34,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 15:39:34,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 15:39:34,783 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 15:39:34,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 15:39:34,783 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 15:39:34,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 15:39:34,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 15:39:34,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 15:39:34,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 15:39:34,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 15:39:34,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:39:34,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 15:39:34,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 15:39:34,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 15:39:34,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 15:39:34,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:34,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 15:39:34,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 15:39:34,786 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 15:39:35,060 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 15:39:35,078 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 15:39:35,082 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 15:39:35,083 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 15:39:35,086 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 15:39:35,087 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-07-21 15:39:35,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c8bb84af/95d2f600c377449da293228697a89b7d/FLAG8588d674f [2020-07-21 15:39:35,734 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 15:39:35,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-07-21 15:39:35,747 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c8bb84af/95d2f600c377449da293228697a89b7d/FLAG8588d674f [2020-07-21 15:39:36,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c8bb84af/95d2f600c377449da293228697a89b7d [2020-07-21 15:39:36,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 15:39:36,098 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 15:39:36,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 15:39:36,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 15:39:36,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 15:39:36,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:36,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3859f6d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36, skipping insertion in model container [2020-07-21 15:39:36,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:36,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 15:39:36,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 15:39:36,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:39:36,603 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 15:39:36,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:39:36,726 INFO L208 MainTranslator]: Completed translation [2020-07-21 15:39:36,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36 WrapperNode [2020-07-21 15:39:36,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 15:39:36,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 15:39:36,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 15:39:36,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 15:39:36,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:36,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:36,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:36,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:36,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:36,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:36,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:36,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 15:39:36,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 15:39:36,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 15:39:36,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 15:39:36,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (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 15:39:36,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 15:39:36,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 15:39:36,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 15:39:36,891 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 15:39:36,891 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 15:39:36,891 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 15:39:36,892 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 15:39:36,892 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 15:39:36,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 15:39:36,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 15:39:36,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 15:39:36,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 15:39:36,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 15:39:36,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 15:39:36,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 15:39:36,894 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 15:39:36,894 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 15:39:36,894 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 15:39:36,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 15:39:36,894 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 15:39:36,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 15:39:36,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 15:39:36,895 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 15:39:36,895 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 15:39:36,895 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 15:39:36,895 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 15:39:36,895 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 15:39:36,895 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 15:39:36,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 15:39:36,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 15:39:36,896 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 15:39:36,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 15:39:36,896 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-21 15:39:36,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-21 15:39:36,896 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 15:39:36,896 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 15:39:36,897 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 15:39:36,897 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 15:39:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 15:39:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 15:39:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 15:39:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 15:39:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 15:39:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 15:39:36,898 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 15:39:36,898 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 15:39:36,899 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 15:39:36,899 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 15:39:36,899 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 15:39:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 15:39:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 15:39:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 15:39:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 15:39:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 15:39:36,900 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 15:39:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 15:39:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 15:39:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 15:39:36,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 15:39:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 15:39:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 15:39:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 15:39:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 15:39:36,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 15:39:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 15:39:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 15:39:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 15:39:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 15:39:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 15:39:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 15:39:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 15:39:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 15:39:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 15:39:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 15:39:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 15:39:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 15:39:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 15:39:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-21 15:39:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 15:39:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 15:39:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 15:39:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-21 15:39:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 15:39:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 15:39:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 15:39:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 15:39:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 15:39:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 15:39:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 15:39:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 15:39:38,038 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 15:39:38,039 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 15:39:38,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:39:38 BoogieIcfgContainer [2020-07-21 15:39:38,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 15:39:38,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 15:39:38,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 15:39:38,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 15:39:38,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:39:36" (1/3) ... [2020-07-21 15:39:38,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47385d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:39:38, skipping insertion in model container [2020-07-21 15:39:38,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (2/3) ... [2020-07-21 15:39:38,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47385d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:39:38, skipping insertion in model container [2020-07-21 15:39:38,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:39:38" (3/3) ... [2020-07-21 15:39:38,057 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2020-07-21 15:39:38,068 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 15:39:38,080 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 15:39:38,095 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 15:39:38,129 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 15:39:38,129 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 15:39:38,130 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 15:39:38,130 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 15:39:38,130 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 15:39:38,130 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 15:39:38,131 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 15:39:38,131 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 15:39:38,156 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-07-21 15:39:38,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 15:39:38,164 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:38,165 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 15:39:38,166 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:38,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:38,171 INFO L82 PathProgramCache]: Analyzing trace with hash 591069479, now seen corresponding path program 1 times [2020-07-21 15:39:38,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:38,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30831281] [2020-07-21 15:39:38,178 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 15:39:38,542 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:38,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:38,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 15:39:38,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:38,595 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 15:39:38,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:38,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30831281] [2020-07-21 15:39:38,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:38,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 15:39:38,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429678734] [2020-07-21 15:39:38,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 15:39:38,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:38,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 15:39:38,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:39:38,629 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 2 states. [2020-07-21 15:39:38,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:38,676 INFO L93 Difference]: Finished difference Result 218 states and 271 transitions. [2020-07-21 15:39:38,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 15:39:38,678 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-21 15:39:38,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:38,694 INFO L225 Difference]: With dead ends: 218 [2020-07-21 15:39:38,695 INFO L226 Difference]: Without dead ends: 109 [2020-07-21 15:39:38,700 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 15:39:38,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-21 15:39:38,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-07-21 15:39:38,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-07-21 15:39:38,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-07-21 15:39:38,765 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 46 [2020-07-21 15:39:38,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:38,766 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-07-21 15:39:38,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 15:39:38,766 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-07-21 15:39:38,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 15:39:38,770 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:38,771 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 15:39:38,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:38,985 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:38,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:38,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1158422735, now seen corresponding path program 1 times [2020-07-21 15:39:38,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:38,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749217699] [2020-07-21 15:39:38,986 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 15:39:39,312 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:39,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:39,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 15:39:39,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:39,351 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 15:39:39,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:39,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749217699] [2020-07-21 15:39:39,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:39,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:39:39,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071052351] [2020-07-21 15:39:39,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:39:39,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:39,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:39:39,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:39,355 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 3 states. [2020-07-21 15:39:39,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:39,376 INFO L93 Difference]: Finished difference Result 163 states and 189 transitions. [2020-07-21 15:39:39,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:39:39,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 15:39:39,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:39,379 INFO L225 Difference]: With dead ends: 163 [2020-07-21 15:39:39,379 INFO L226 Difference]: Without dead ends: 100 [2020-07-21 15:39:39,380 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 15:39:39,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-07-21 15:39:39,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-07-21 15:39:39,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-07-21 15:39:39,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-07-21 15:39:39,394 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 47 [2020-07-21 15:39:39,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:39,394 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-07-21 15:39:39,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:39:39,395 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-07-21 15:39:39,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-21 15:39:39,397 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:39,397 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 15:39:39,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:39,611 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:39,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:39,612 INFO L82 PathProgramCache]: Analyzing trace with hash -870171294, now seen corresponding path program 1 times [2020-07-21 15:39:39,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:39,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451609695] [2020-07-21 15:39:39,613 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 15:39:39,983 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:39,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:39,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 15:39:39,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:40,023 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 15:39:40,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:40,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451609695] [2020-07-21 15:39:40,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:40,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:39:40,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913733471] [2020-07-21 15:39:40,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:39:40,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:40,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:39:40,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:40,028 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 3 states. [2020-07-21 15:39:40,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:40,057 INFO L93 Difference]: Finished difference Result 176 states and 207 transitions. [2020-07-21 15:39:40,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:39:40,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-21 15:39:40,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:40,063 INFO L225 Difference]: With dead ends: 176 [2020-07-21 15:39:40,063 INFO L226 Difference]: Without dead ends: 100 [2020-07-21 15:39:40,065 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 15:39:40,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-07-21 15:39:40,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-07-21 15:39:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-07-21 15:39:40,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-07-21 15:39:40,090 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 52 [2020-07-21 15:39:40,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:40,091 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-07-21 15:39:40,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:39:40,091 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-07-21 15:39:40,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-21 15:39:40,096 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:40,096 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 15:39:40,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:40,297 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:40,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:40,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1248327953, now seen corresponding path program 1 times [2020-07-21 15:39:40,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:40,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144235538] [2020-07-21 15:39:40,299 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 15:39:40,660 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:40,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:40,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 15:39:40,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:40,714 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 15:39:40,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:40,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144235538] [2020-07-21 15:39:40,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:40,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:39:40,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475241616] [2020-07-21 15:39:40,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:39:40,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:40,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:39:40,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:39:40,717 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 6 states. [2020-07-21 15:39:40,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:40,891 INFO L93 Difference]: Finished difference Result 245 states and 291 transitions. [2020-07-21 15:39:40,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 15:39:40,892 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-07-21 15:39:40,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:40,895 INFO L225 Difference]: With dead ends: 245 [2020-07-21 15:39:40,896 INFO L226 Difference]: Without dead ends: 169 [2020-07-21 15:39:40,897 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 15:39:40,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-07-21 15:39:40,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2020-07-21 15:39:40,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-07-21 15:39:40,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 194 transitions. [2020-07-21 15:39:40,918 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 194 transitions. Word has length 60 [2020-07-21 15:39:40,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:40,919 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 194 transitions. [2020-07-21 15:39:40,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:39:40,919 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 194 transitions. [2020-07-21 15:39:40,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-21 15:39:40,921 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:40,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:39:41,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:41,135 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:41,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:41,135 INFO L82 PathProgramCache]: Analyzing trace with hash 2011395789, now seen corresponding path program 1 times [2020-07-21 15:39:41,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:41,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36649067] [2020-07-21 15:39:41,136 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 15:39:41,441 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:41,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:41,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 15:39:41,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:41,484 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 15:39:41,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:41,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36649067] [2020-07-21 15:39:41,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:41,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 15:39:41,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124458311] [2020-07-21 15:39:41,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 15:39:41,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:41,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 15:39:41,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-21 15:39:41,487 INFO L87 Difference]: Start difference. First operand 167 states and 194 transitions. Second operand 7 states. [2020-07-21 15:39:42,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:42,083 INFO L93 Difference]: Finished difference Result 442 states and 550 transitions. [2020-07-21 15:39:42,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 15:39:42,084 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-07-21 15:39:42,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:42,088 INFO L225 Difference]: With dead ends: 442 [2020-07-21 15:39:42,088 INFO L226 Difference]: Without dead ends: 299 [2020-07-21 15:39:42,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-07-21 15:39:42,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-07-21 15:39:42,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 269. [2020-07-21 15:39:42,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-07-21 15:39:42,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 317 transitions. [2020-07-21 15:39:42,121 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 317 transitions. Word has length 64 [2020-07-21 15:39:42,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:42,122 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 317 transitions. [2020-07-21 15:39:42,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 15:39:42,122 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 317 transitions. [2020-07-21 15:39:42,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 15:39:42,126 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:42,127 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:39:42,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:42,341 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:42,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:42,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1769050262, now seen corresponding path program 1 times [2020-07-21 15:39:42,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:42,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967008975] [2020-07-21 15:39:42,343 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 15:39:42,673 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:42,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:42,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 15:39:42,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:42,711 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 15:39:42,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:42,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967008975] [2020-07-21 15:39:42,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:42,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:39:42,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496910126] [2020-07-21 15:39:42,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:39:42,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:42,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:39:42,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:39:42,714 INFO L87 Difference]: Start difference. First operand 269 states and 317 transitions. Second operand 6 states. [2020-07-21 15:39:42,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:42,761 INFO L93 Difference]: Finished difference Result 524 states and 630 transitions. [2020-07-21 15:39:42,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 15:39:42,762 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-07-21 15:39:42,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:42,765 INFO L225 Difference]: With dead ends: 524 [2020-07-21 15:39:42,766 INFO L226 Difference]: Without dead ends: 279 [2020-07-21 15:39:42,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 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 15:39:42,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-07-21 15:39:42,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2020-07-21 15:39:42,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-07-21 15:39:42,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 327 transitions. [2020-07-21 15:39:42,820 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 327 transitions. Word has length 79 [2020-07-21 15:39:42,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:42,821 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 327 transitions. [2020-07-21 15:39:42,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:39:42,821 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 327 transitions. [2020-07-21 15:39:42,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 15:39:42,829 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:42,829 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:39:43,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:43,030 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:43,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:43,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1259577172, now seen corresponding path program 1 times [2020-07-21 15:39:43,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:43,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162802372] [2020-07-21 15:39:43,035 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 15:39:43,265 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:39:43,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:43,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 15:39:43,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:43,297 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 15:39:43,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:43,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162802372] [2020-07-21 15:39:43,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:43,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 15:39:43,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104813659] [2020-07-21 15:39:43,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 15:39:43,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:43,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 15:39:43,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:39:43,300 INFO L87 Difference]: Start difference. First operand 279 states and 327 transitions. Second operand 5 states. [2020-07-21 15:39:43,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:43,330 INFO L93 Difference]: Finished difference Result 548 states and 664 transitions. [2020-07-21 15:39:43,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 15:39:43,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-07-21 15:39:43,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:43,334 INFO L225 Difference]: With dead ends: 548 [2020-07-21 15:39:43,334 INFO L226 Difference]: Without dead ends: 293 [2020-07-21 15:39:43,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 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 15:39:43,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-07-21 15:39:43,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 287. [2020-07-21 15:39:43,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-07-21 15:39:43,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 335 transitions. [2020-07-21 15:39:43,359 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 335 transitions. Word has length 79 [2020-07-21 15:39:43,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:43,360 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 335 transitions. [2020-07-21 15:39:43,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 15:39:43,360 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 335 transitions. [2020-07-21 15:39:43,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 15:39:43,362 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:43,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:39:43,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:43,578 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:43,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:43,579 INFO L82 PathProgramCache]: Analyzing trace with hash -750526669, now seen corresponding path program 1 times [2020-07-21 15:39:43,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:43,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789118578] [2020-07-21 15:39:43,580 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 15:39:43,827 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:43,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:43,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 15:39:43,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:43,865 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 15:39:43,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:43,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789118578] [2020-07-21 15:39:43,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:43,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:39:43,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973015498] [2020-07-21 15:39:43,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:39:43,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:43,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:39:43,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:43,868 INFO L87 Difference]: Start difference. First operand 287 states and 335 transitions. Second operand 3 states. [2020-07-21 15:39:43,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:43,908 INFO L93 Difference]: Finished difference Result 761 states and 945 transitions. [2020-07-21 15:39:43,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:39:43,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-07-21 15:39:43,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:43,913 INFO L225 Difference]: With dead ends: 761 [2020-07-21 15:39:43,913 INFO L226 Difference]: Without dead ends: 498 [2020-07-21 15:39:43,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 76 SyntacticMatches, 1 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 15:39:43,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-07-21 15:39:43,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 495. [2020-07-21 15:39:43,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-07-21 15:39:43,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 596 transitions. [2020-07-21 15:39:43,951 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 596 transitions. Word has length 79 [2020-07-21 15:39:43,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:43,951 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 596 transitions. [2020-07-21 15:39:43,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:39:43,951 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 596 transitions. [2020-07-21 15:39:43,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-21 15:39:43,953 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:43,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:39:44,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:44,167 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:44,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:44,168 INFO L82 PathProgramCache]: Analyzing trace with hash 893739545, now seen corresponding path program 1 times [2020-07-21 15:39:44,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:44,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35943191] [2020-07-21 15:39:44,169 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 15:39:44,477 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:44,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 15:39:44,478 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:39:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 15:39:44,585 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:39:44,926 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 15:39:44,926 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 15:39:45,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:45,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:39:45 BoogieIcfgContainer [2020-07-21 15:39:45,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 15:39:45,303 INFO L168 Benchmark]: Toolchain (without parser) took 9204.41 ms. Allocated memory was 138.4 MB in the beginning and 318.8 MB in the end (delta: 180.4 MB). Free memory was 102.2 MB in the beginning and 207.4 MB in the end (delta: -105.2 MB). Peak memory consumption was 75.1 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:45,307 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 15:39:45,308 INFO L168 Benchmark]: CACSL2BoogieTranslator took 627.97 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 101.7 MB in the beginning and 167.5 MB in the end (delta: -65.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:45,308 INFO L168 Benchmark]: Boogie Preprocessor took 85.59 ms. Allocated memory is still 201.9 MB. Free memory was 167.5 MB in the beginning and 163.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:45,309 INFO L168 Benchmark]: RCFGBuilder took 1234.10 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 163.4 MB in the beginning and 195.0 MB in the end (delta: -31.6 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:45,310 INFO L168 Benchmark]: TraceAbstraction took 7250.20 ms. Allocated memory was 235.4 MB in the beginning and 318.8 MB in the end (delta: 83.4 MB). Free memory was 193.6 MB in the beginning and 207.4 MB in the end (delta: -13.8 MB). Peak memory consumption was 69.6 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:45,318 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 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 627.97 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 101.7 MB in the beginning and 167.5 MB in the end (delta: -65.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.59 ms. Allocated memory is still 201.9 MB. Free memory was 167.5 MB in the beginning and 163.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1234.10 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 163.4 MB in the beginning and 195.0 MB in the end (delta: -31.6 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7250.20 ms. Allocated memory was 235.4 MB in the beginning and 318.8 MB in the end (delta: 83.4 MB). Free memory was 193.6 MB in the beginning and 207.4 MB in the end (delta: -13.8 MB). Peak memory consumption was 69.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 514]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L313] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L524] int waterLevel = 1; [L525] int methaneLevelCritical = 0; [L689] int pumpRunning = 0; [L690] int systemActive = 1; VAL [\old(cleanupTimeShifts)=86, \old(head)=61, \old(head)=36, \old(methaneLevelCritical)=45, \old(pumpRunning)=69, \old(systemActive)=39, \old(waterLevel)=37, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L121] int retValue_acc ; [L122] 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] [L126] 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] [L127] 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] [L128] 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] [L902] int retValue_acc ; [L905] retValue_acc = 1 [L906] 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] [L128] 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] [L128] tmp = valid_product() [L130] 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] [L132] 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] [L133] 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] [L112] 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] [L620] int splverifierCounter ; [L621] int tmp ; [L622] int tmp___0 ; [L623] int tmp___1 ; [L624] int tmp___2 ; [L627] 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] [L629] 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] [L631] 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] [L637] tmp = __VERIFIER_nondet_int() [L639] 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] [L641] 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] [L542] COND TRUE waterLevel < 2 [L543] 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] [L641] 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] [L647] tmp___0 = __VERIFIER_nondet_int() [L649] COND TRUE \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=1, waterLevel=2] [L651] CALL changeMethaneLevel() 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] [L554] COND FALSE !(\read(methaneLevelCritical)) [L557] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L651] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L657] tmp___2 = __VERIFIER_nondet_int() [L659] COND FALSE !(\read(tmp___2)) [L665] tmp___1 = __VERIFIER_nondet_int() [L667] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___1=1, tmp___2=0, waterLevel=2] [L674] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L697] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L704] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L706] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L726] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L729] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L731] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L823] int retValue_acc ; [L824] int tmp ; [L825] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L829] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L604] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L607] COND FALSE !(waterLevel < 2) [L611] retValue_acc = 0 [L612] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L829] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L829] tmp = isHighWaterSensorDry() [L831] COND FALSE !(\read(tmp)) [L834] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L836] retValue_acc = tmp___0 [L837] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L731] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L731] tmp = isHighWaterLevel() [L733] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L735] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L754] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L735] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L706] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L712] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L851] int tmp ; [L852] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L856] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L563] int retValue_acc ; [L566] retValue_acc = methaneLevelCritical [L567] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L856] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L856] tmp = isMethaneLevelCritical() [L858] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L860] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L778] int retValue_acc ; [L781] retValue_acc = pumpRunning [L782] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L860] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L860] tmp___0 = isPumpRunning() [L862] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L864] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L514] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 219 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 950 SDtfs, 375 SDslu, 1556 SDs, 0 SdLazy, 419 SolverSat, 94 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 507 GetRequests, 479 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=495occurred in iteration=8, 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, 8 MinimizatonAttempts, 41 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 589 NumberOfCodeBlocks, 550 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 498 ConstructedInterpolants, 0 QuantifiedInterpolants, 54198 SizeOfPredicates, 20 NumberOfNonLiveVariables, 5404 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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...