/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_spec2_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 15:40:35,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 15:40:35,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 15:40:35,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 15:40:35,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 15:40:35,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 15:40:35,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 15:40:35,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 15:40:35,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 15:40:35,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 15:40:35,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 15:40:35,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 15:40:35,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 15:40:35,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 15:40:35,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 15:40:35,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 15:40:35,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 15:40:35,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 15:40:35,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 15:40:35,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 15:40:35,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 15:40:35,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 15:40:35,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 15:40:35,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 15:40:35,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 15:40:35,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 15:40:35,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 15:40:35,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 15:40:35,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 15:40:35,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 15:40:35,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 15:40:35,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 15:40:35,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 15:40:35,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 15:40:35,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 15:40:35,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 15:40:35,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 15:40:35,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 15:40:35,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 15:40:35,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 15:40:35,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 15:40:35,727 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 15:40:35,742 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 15:40:35,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 15:40:35,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 15:40:35,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 15:40:35,744 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 15:40:35,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 15:40:35,744 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 15:40:35,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 15:40:35,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 15:40:35,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 15:40:35,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 15:40:35,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 15:40:35,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 15:40:35,746 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 15:40:35,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 15:40:35,746 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 15:40:35,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 15:40:35,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 15:40:35,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 15:40:35,747 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 15:40:35,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 15:40:35,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:40:35,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 15:40:35,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 15:40:35,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 15:40:35,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 15:40:35,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:35,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 15:40:35,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 15:40:35,749 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 15:40:36,043 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 15:40:36,063 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 15:40:36,068 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 15:40:36,070 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 15:40:36,071 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 15:40:36,071 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c [2020-07-21 15:40:36,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af274a129/26b641973e0a42a88c38d27ba190c670/FLAGc64370069 [2020-07-21 15:40:36,728 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 15:40:36,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c [2020-07-21 15:40:36,747 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af274a129/26b641973e0a42a88c38d27ba190c670/FLAGc64370069 [2020-07-21 15:40:37,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af274a129/26b641973e0a42a88c38d27ba190c670 [2020-07-21 15:40:37,042 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 15:40:37,045 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 15:40:37,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 15:40:37,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 15:40:37,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 15:40:37,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:40:37" (1/1) ... [2020-07-21 15:40:37,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@561dbf47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37, skipping insertion in model container [2020-07-21 15:40:37,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:40:37" (1/1) ... [2020-07-21 15:40:37,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 15:40:37,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 15:40:37,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:40:37,549 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 15:40:37,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:40:37,701 INFO L208 MainTranslator]: Completed translation [2020-07-21 15:40:37,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37 WrapperNode [2020-07-21 15:40:37,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 15:40:37,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 15:40:37,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 15:40:37,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 15:40:37,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37" (1/1) ... [2020-07-21 15:40:37,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37" (1/1) ... [2020-07-21 15:40:37,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37" (1/1) ... [2020-07-21 15:40:37,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37" (1/1) ... [2020-07-21 15:40:37,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37" (1/1) ... [2020-07-21 15:40:37,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37" (1/1) ... [2020-07-21 15:40:37,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37" (1/1) ... [2020-07-21 15:40:37,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 15:40:37,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 15:40:37,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 15:40:37,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 15:40:37,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37" (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 15:40:37,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 15:40:37,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 15:40:37,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 15:40:37,903 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 15:40:37,904 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 15:40:37,904 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 15:40:37,904 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 15:40:37,904 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 15:40:37,904 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 15:40:37,904 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 15:40:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 15:40:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 15:40:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 15:40:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 15:40:37,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 15:40:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 15:40:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 15:40:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 15:40:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 15:40:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 15:40:37,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 15:40:37,907 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 15:40:37,907 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 15:40:37,907 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 15:40:37,907 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 15:40:37,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-07-21 15:40:37,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-07-21 15:40:37,908 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 15:40:37,908 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 15:40:37,908 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 15:40:37,908 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 15:40:37,908 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-07-21 15:40:37,908 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 15:40:37,908 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 15:40:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 15:40:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 15:40:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 15:40:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 15:40:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-21 15:40:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 15:40:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 15:40:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 15:40:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 15:40:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 15:40:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 15:40:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 15:40:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 15:40:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 15:40:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 15:40:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 15:40:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 15:40:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 15:40:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 15:40:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 15:40:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 15:40:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 15:40:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 15:40:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 15:40:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 15:40:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 15:40:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 15:40:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 15:40:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 15:40:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 15:40:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 15:40:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 15:40:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 15:40:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 15:40:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 15:40:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 15:40:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 15:40:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 15:40:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-07-21 15:40:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 15:40:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 15:40:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 15:40:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 15:40:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 15:40:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 15:40:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 15:40:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 15:40:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 15:40:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-07-21 15:40:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-21 15:40:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 15:40:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 15:40:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 15:40:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 15:40:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 15:40:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-07-21 15:40:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 15:40:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 15:40:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 15:40:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 15:40:41,145 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 15:40:41,145 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 15:40:41,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:40:41 BoogieIcfgContainer [2020-07-21 15:40:41,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 15:40:41,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 15:40:41,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 15:40:41,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 15:40:41,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:40:37" (1/3) ... [2020-07-21 15:40:41,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ea54ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:40:41, skipping insertion in model container [2020-07-21 15:40:41,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:40:37" (2/3) ... [2020-07-21 15:40:41,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ea54ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:40:41, skipping insertion in model container [2020-07-21 15:40:41,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:40:41" (3/3) ... [2020-07-21 15:40:41,159 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product43.cil.c [2020-07-21 15:40:41,169 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 15:40:41,177 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 15:40:41,191 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 15:40:41,217 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 15:40:41,217 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 15:40:41,217 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 15:40:41,217 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 15:40:41,218 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 15:40:41,218 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 15:40:41,218 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 15:40:41,218 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 15:40:41,242 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-07-21 15:40:41,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-21 15:40:41,251 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:41,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:40:41,253 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:41,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:41,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1550952004, now seen corresponding path program 1 times [2020-07-21 15:40:41,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:41,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40849211] [2020-07-21 15:40:41,267 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 15:40:41,714 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:40:41,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:41,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 15:40:41,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:41,762 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 15:40:41,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:41,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40849211] [2020-07-21 15:40:41,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:41,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 15:40:41,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992175773] [2020-07-21 15:40:41,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 15:40:41,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:41,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 15:40:41,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:40:41,788 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 2 states. [2020-07-21 15:40:41,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:41,832 INFO L93 Difference]: Finished difference Result 258 states and 319 transitions. [2020-07-21 15:40:41,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 15:40:41,834 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2020-07-21 15:40:41,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:41,847 INFO L225 Difference]: With dead ends: 258 [2020-07-21 15:40:41,848 INFO L226 Difference]: Without dead ends: 131 [2020-07-21 15:40:41,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:40:41,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-07-21 15:40:41,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2020-07-21 15:40:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-07-21 15:40:41,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 153 transitions. [2020-07-21 15:40:41,911 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 153 transitions. Word has length 51 [2020-07-21 15:40:41,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:41,912 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 153 transitions. [2020-07-21 15:40:41,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 15:40:41,912 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 153 transitions. [2020-07-21 15:40:41,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-21 15:40:41,916 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:41,917 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 15:40:42,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:42,130 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:42,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:42,131 INFO L82 PathProgramCache]: Analyzing trace with hash -185895496, now seen corresponding path program 1 times [2020-07-21 15:40:42,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:42,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110170845] [2020-07-21 15:40:42,133 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 15:40:42,535 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:40:42,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:42,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 15:40:42,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:42,589 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 15:40:42,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:42,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110170845] [2020-07-21 15:40:42,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:42,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:40:42,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239465191] [2020-07-21 15:40:42,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:40:42,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:42,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:40:42,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:40:42,593 INFO L87 Difference]: Start difference. First operand 131 states and 153 transitions. Second operand 3 states. [2020-07-21 15:40:42,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:42,618 INFO L93 Difference]: Finished difference Result 198 states and 231 transitions. [2020-07-21 15:40:42,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:40:42,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-21 15:40:42,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:42,622 INFO L225 Difference]: With dead ends: 198 [2020-07-21 15:40:42,622 INFO L226 Difference]: Without dead ends: 122 [2020-07-21 15:40:42,624 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 15:40:42,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-21 15:40:42,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-07-21 15:40:42,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-07-21 15:40:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 141 transitions. [2020-07-21 15:40:42,641 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 141 transitions. Word has length 52 [2020-07-21 15:40:42,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:42,641 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 141 transitions. [2020-07-21 15:40:42,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:40:42,642 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 141 transitions. [2020-07-21 15:40:42,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-21 15:40:42,644 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:42,644 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] [2020-07-21 15:40:42,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:42,858 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:42,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:42,859 INFO L82 PathProgramCache]: Analyzing trace with hash 794087253, now seen corresponding path program 1 times [2020-07-21 15:40:42,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:42,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142961432] [2020-07-21 15:40:42,861 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 15:40:43,116 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:40:43,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:43,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 15:40:43,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:43,150 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 15:40:43,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:43,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142961432] [2020-07-21 15:40:43,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:43,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:40:43,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852777792] [2020-07-21 15:40:43,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:40:43,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:43,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:40:43,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:40:43,153 INFO L87 Difference]: Start difference. First operand 122 states and 141 transitions. Second operand 3 states. [2020-07-21 15:40:43,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:43,193 INFO L93 Difference]: Finished difference Result 308 states and 367 transitions. [2020-07-21 15:40:43,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:40:43,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-07-21 15:40:43,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:43,199 INFO L225 Difference]: With dead ends: 308 [2020-07-21 15:40:43,199 INFO L226 Difference]: Without dead ends: 214 [2020-07-21 15:40:43,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 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 15:40:43,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-07-21 15:40:43,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 204. [2020-07-21 15:40:43,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-07-21 15:40:43,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 241 transitions. [2020-07-21 15:40:43,230 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 241 transitions. Word has length 56 [2020-07-21 15:40:43,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:43,230 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 241 transitions. [2020-07-21 15:40:43,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:40:43,231 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 241 transitions. [2020-07-21 15:40:43,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-21 15:40:43,242 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:43,242 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] [2020-07-21 15:40:43,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:43,456 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:43,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:43,457 INFO L82 PathProgramCache]: Analyzing trace with hash -2145966964, now seen corresponding path program 1 times [2020-07-21 15:40:43,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:43,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038820659] [2020-07-21 15:40:43,459 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 15:40:43,777 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:40:43,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:43,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 15:40:43,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:43,827 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 15:40:43,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:43,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038820659] [2020-07-21 15:40:43,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:43,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:40:43,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792637547] [2020-07-21 15:40:43,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:40:43,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:43,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:40:43,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:40:43,830 INFO L87 Difference]: Start difference. First operand 204 states and 241 transitions. Second operand 6 states. [2020-07-21 15:40:44,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:44,082 INFO L93 Difference]: Finished difference Result 484 states and 596 transitions. [2020-07-21 15:40:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 15:40:44,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-07-21 15:40:44,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:44,087 INFO L225 Difference]: With dead ends: 484 [2020-07-21 15:40:44,087 INFO L226 Difference]: Without dead ends: 308 [2020-07-21 15:40:44,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 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 15:40:44,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-07-21 15:40:44,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 300. [2020-07-21 15:40:44,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-07-21 15:40:44,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 359 transitions. [2020-07-21 15:40:44,123 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 359 transitions. Word has length 62 [2020-07-21 15:40:44,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:44,124 INFO L479 AbstractCegarLoop]: Abstraction has 300 states and 359 transitions. [2020-07-21 15:40:44,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:40:44,124 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 359 transitions. [2020-07-21 15:40:44,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-07-21 15:40:44,128 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:44,128 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:40:44,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:44,342 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:44,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:44,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1274540682, now seen corresponding path program 1 times [2020-07-21 15:40:44,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:44,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40489139] [2020-07-21 15:40:44,344 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 15:40:44,557 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:40:44,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:44,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 15:40:44,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:44,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 15:40:44,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:44,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40489139] [2020-07-21 15:40:44,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:44,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 15:40:44,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590525948] [2020-07-21 15:40:44,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 15:40:44,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:44,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 15:40:44,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:40:44,603 INFO L87 Difference]: Start difference. First operand 300 states and 359 transitions. Second operand 5 states. [2020-07-21 15:40:44,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:44,633 INFO L93 Difference]: Finished difference Result 586 states and 724 transitions. [2020-07-21 15:40:44,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 15:40:44,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-07-21 15:40:44,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:44,637 INFO L225 Difference]: With dead ends: 586 [2020-07-21 15:40:44,637 INFO L226 Difference]: Without dead ends: 314 [2020-07-21 15:40:44,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 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 15:40:44,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-07-21 15:40:44,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 308. [2020-07-21 15:40:44,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-07-21 15:40:44,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 367 transitions. [2020-07-21 15:40:44,663 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 367 transitions. Word has length 94 [2020-07-21 15:40:44,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:44,664 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 367 transitions. [2020-07-21 15:40:44,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 15:40:44,664 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 367 transitions. [2020-07-21 15:40:44,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-07-21 15:40:44,666 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:44,666 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:40:44,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:44,880 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:44,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:44,880 INFO L82 PathProgramCache]: Analyzing trace with hash -774847160, now seen corresponding path program 1 times [2020-07-21 15:40:44,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:44,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933469750] [2020-07-21 15:40:44,882 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 15:40:45,125 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:40:45,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:45,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 15:40:45,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:45,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 15:40:45,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:45,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933469750] [2020-07-21 15:40:45,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:45,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:40:45,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15682143] [2020-07-21 15:40:45,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:40:45,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:45,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:40:45,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:40:45,172 INFO L87 Difference]: Start difference. First operand 308 states and 367 transitions. Second operand 3 states. [2020-07-21 15:40:45,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:45,210 INFO L93 Difference]: Finished difference Result 844 states and 1073 transitions. [2020-07-21 15:40:45,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:40:45,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-07-21 15:40:45,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:45,214 INFO L225 Difference]: With dead ends: 844 [2020-07-21 15:40:45,215 INFO L226 Difference]: Without dead ends: 564 [2020-07-21 15:40:45,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 91 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 15:40:45,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-07-21 15:40:45,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 561. [2020-07-21 15:40:45,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-07-21 15:40:45,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 698 transitions. [2020-07-21 15:40:45,254 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 698 transitions. Word has length 94 [2020-07-21 15:40:45,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:45,254 INFO L479 AbstractCegarLoop]: Abstraction has 561 states and 698 transitions. [2020-07-21 15:40:45,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:40:45,254 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 698 transitions. [2020-07-21 15:40:45,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-07-21 15:40:45,257 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:45,257 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:40:45,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:45,472 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:45,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:45,473 INFO L82 PathProgramCache]: Analyzing trace with hash 943235461, now seen corresponding path program 1 times [2020-07-21 15:40:45,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:45,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417740803] [2020-07-21 15:40:45,474 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 15:40:45,771 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:40:45,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:45,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 15:40:45,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:45,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 15:40:45,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:45,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417740803] [2020-07-21 15:40:45,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:45,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:40:45,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645088826] [2020-07-21 15:40:45,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:40:45,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:45,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:40:45,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:40:45,836 INFO L87 Difference]: Start difference. First operand 561 states and 698 transitions. Second operand 6 states. [2020-07-21 15:40:46,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:46,816 INFO L93 Difference]: Finished difference Result 1820 states and 2451 transitions. [2020-07-21 15:40:46,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 15:40:46,816 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-07-21 15:40:46,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:46,826 INFO L225 Difference]: With dead ends: 1820 [2020-07-21 15:40:46,826 INFO L226 Difference]: Without dead ends: 1287 [2020-07-21 15:40:46,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-21 15:40:46,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2020-07-21 15:40:46,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1181. [2020-07-21 15:40:46,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2020-07-21 15:40:46,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1533 transitions. [2020-07-21 15:40:46,921 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1533 transitions. Word has length 98 [2020-07-21 15:40:46,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:46,921 INFO L479 AbstractCegarLoop]: Abstraction has 1181 states and 1533 transitions. [2020-07-21 15:40:46,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:40:46,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1533 transitions. [2020-07-21 15:40:46,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-07-21 15:40:46,923 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:46,924 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:40:47,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:47,139 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:47,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:47,140 INFO L82 PathProgramCache]: Analyzing trace with hash 304959659, now seen corresponding path program 1 times [2020-07-21 15:40:47,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:47,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552902458] [2020-07-21 15:40:47,141 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 15:40:47,421 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:40:47,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:47,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 15:40:47,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:47,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 15:40:47,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:47,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552902458] [2020-07-21 15:40:47,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:47,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:40:47,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772229689] [2020-07-21 15:40:47,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:40:47,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:47,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:40:47,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:40:47,455 INFO L87 Difference]: Start difference. First operand 1181 states and 1533 transitions. Second operand 3 states. [2020-07-21 15:40:47,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:47,551 INFO L93 Difference]: Finished difference Result 2131 states and 2915 transitions. [2020-07-21 15:40:47,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:40:47,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-07-21 15:40:47,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:47,568 INFO L225 Difference]: With dead ends: 2131 [2020-07-21 15:40:47,568 INFO L226 Difference]: Without dead ends: 2128 [2020-07-21 15:40:47,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 92 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 15:40:47,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2020-07-21 15:40:47,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 2052. [2020-07-21 15:40:47,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2052 states. [2020-07-21 15:40:47,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 2817 transitions. [2020-07-21 15:40:47,726 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 2817 transitions. Word has length 94 [2020-07-21 15:40:47,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:47,727 INFO L479 AbstractCegarLoop]: Abstraction has 2052 states and 2817 transitions. [2020-07-21 15:40:47,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:40:47,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 2817 transitions. [2020-07-21 15:40:47,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-07-21 15:40:47,735 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:47,736 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:40:47,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:47,951 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:47,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:47,952 INFO L82 PathProgramCache]: Analyzing trace with hash 2051611907, now seen corresponding path program 1 times [2020-07-21 15:40:47,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:47,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850517395] [2020-07-21 15:40:47,953 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 15:40:48,279 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:40:48,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:48,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 15:40:48,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:48,305 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-07-21 15:40:48,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:48,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850517395] [2020-07-21 15:40:48,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:48,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:40:48,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185462343] [2020-07-21 15:40:48,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:40:48,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:48,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:40:48,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:40:48,308 INFO L87 Difference]: Start difference. First operand 2052 states and 2817 transitions. Second operand 3 states. [2020-07-21 15:40:48,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:48,445 INFO L93 Difference]: Finished difference Result 2387 states and 3266 transitions. [2020-07-21 15:40:48,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:40:48,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-07-21 15:40:48,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:48,454 INFO L225 Difference]: With dead ends: 2387 [2020-07-21 15:40:48,454 INFO L226 Difference]: Without dead ends: 957 [2020-07-21 15:40:48,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 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 15:40:48,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2020-07-21 15:40:48,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 957. [2020-07-21 15:40:48,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2020-07-21 15:40:48,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1285 transitions. [2020-07-21 15:40:48,529 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1285 transitions. Word has length 134 [2020-07-21 15:40:48,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:48,530 INFO L479 AbstractCegarLoop]: Abstraction has 957 states and 1285 transitions. [2020-07-21 15:40:48,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:40:48,530 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1285 transitions. [2020-07-21 15:40:48,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-07-21 15:40:48,533 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:48,534 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:40:48,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:48,747 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:48,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:48,748 INFO L82 PathProgramCache]: Analyzing trace with hash 106445333, now seen corresponding path program 1 times [2020-07-21 15:40:48,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:48,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407866539] [2020-07-21 15:40:48,749 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:49,048 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:40:49,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:49,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-21 15:40:49,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-21 15:40:49,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:40:49,748 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-21 15:40:49,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407866539] [2020-07-21 15:40:49,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 15:40:49,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2020-07-21 15:40:49,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258819244] [2020-07-21 15:40:49,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-21 15:40:49,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:49,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-21 15:40:49,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-07-21 15:40:49,751 INFO L87 Difference]: Start difference. First operand 957 states and 1285 transitions. Second operand 17 states. [2020-07-21 15:40:50,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:50,864 INFO L93 Difference]: Finished difference Result 2440 states and 3573 transitions. [2020-07-21 15:40:50,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-21 15:40:50,865 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 136 [2020-07-21 15:40:50,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:50,881 INFO L225 Difference]: With dead ends: 2440 [2020-07-21 15:40:50,881 INFO L226 Difference]: Without dead ends: 1511 [2020-07-21 15:40:50,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2020-07-21 15:40:50,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2020-07-21 15:40:50,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1456. [2020-07-21 15:40:50,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1456 states. [2020-07-21 15:40:51,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 1950 transitions. [2020-07-21 15:40:51,037 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 1950 transitions. Word has length 136 [2020-07-21 15:40:51,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:51,038 INFO L479 AbstractCegarLoop]: Abstraction has 1456 states and 1950 transitions. [2020-07-21 15:40:51,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-21 15:40:51,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 1950 transitions. [2020-07-21 15:40:51,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-07-21 15:40:51,048 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:51,048 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:40:51,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:51,264 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:51,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:51,265 INFO L82 PathProgramCache]: Analyzing trace with hash -545068761, now seen corresponding path program 1 times [2020-07-21 15:40:51,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:51,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856637261] [2020-07-21 15:40:51,266 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:51,478 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:40:51,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:51,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 15:40:51,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:51,526 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-07-21 15:40:51,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:51,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856637261] [2020-07-21 15:40:51,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:51,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:40:51,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095876196] [2020-07-21 15:40:51,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:40:51,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:51,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:40:51,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:40:51,529 INFO L87 Difference]: Start difference. First operand 1456 states and 1950 transitions. Second operand 6 states. [2020-07-21 15:40:51,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:51,608 INFO L93 Difference]: Finished difference Result 2936 states and 4059 transitions. [2020-07-21 15:40:51,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 15:40:51,608 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2020-07-21 15:40:51,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:51,627 INFO L225 Difference]: With dead ends: 2936 [2020-07-21 15:40:51,628 INFO L226 Difference]: Without dead ends: 1508 [2020-07-21 15:40:51,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 15:40:51,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2020-07-21 15:40:51,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1496. [2020-07-21 15:40:51,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1496 states. [2020-07-21 15:40:51,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 1996 transitions. [2020-07-21 15:40:51,719 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 1996 transitions. Word has length 175 [2020-07-21 15:40:51,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:51,720 INFO L479 AbstractCegarLoop]: Abstraction has 1496 states and 1996 transitions. [2020-07-21 15:40:51,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:40:51,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 1996 transitions. [2020-07-21 15:40:51,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-07-21 15:40:51,729 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:51,729 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:40:51,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:51,943 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:51,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:51,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1251665367, now seen corresponding path program 1 times [2020-07-21 15:40:51,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:51,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185452275] [2020-07-21 15:40:51,945 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:52,246 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:40:52,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:52,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 15:40:52,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:52,359 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-07-21 15:40:52,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:52,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185452275] [2020-07-21 15:40:52,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:52,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 15:40:52,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052772480] [2020-07-21 15:40:52,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 15:40:52,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:52,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 15:40:52,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:40:52,362 INFO L87 Difference]: Start difference. First operand 1496 states and 1996 transitions. Second operand 5 states. [2020-07-21 15:40:52,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:52,434 INFO L93 Difference]: Finished difference Result 2767 states and 3809 transitions. [2020-07-21 15:40:52,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 15:40:52,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-07-21 15:40:52,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:52,445 INFO L225 Difference]: With dead ends: 2767 [2020-07-21 15:40:52,445 INFO L226 Difference]: Without dead ends: 1299 [2020-07-21 15:40:52,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 171 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 15:40:52,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2020-07-21 15:40:52,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1271. [2020-07-21 15:40:52,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-07-21 15:40:52,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1655 transitions. [2020-07-21 15:40:52,541 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1655 transitions. Word has length 175 [2020-07-21 15:40:52,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:52,542 INFO L479 AbstractCegarLoop]: Abstraction has 1271 states and 1655 transitions. [2020-07-21 15:40:52,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 15:40:52,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1655 transitions. [2020-07-21 15:40:52,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-07-21 15:40:52,547 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:52,547 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:40:52,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:52,761 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:52,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:52,762 INFO L82 PathProgramCache]: Analyzing trace with hash -90140364, now seen corresponding path program 1 times [2020-07-21 15:40:52,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:52,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968450294] [2020-07-21 15:40:52,763 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:52,961 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:40:52,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:40:52,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 15:40:52,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:40:53,027 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-07-21 15:40:53,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:40:53,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968450294] [2020-07-21 15:40:53,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:40:53,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:40:53,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106814032] [2020-07-21 15:40:53,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:40:53,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:40:53,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:40:53,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:40:53,030 INFO L87 Difference]: Start difference. First operand 1271 states and 1655 transitions. Second operand 6 states. [2020-07-21 15:40:53,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:40:53,408 INFO L93 Difference]: Finished difference Result 2531 states and 3360 transitions. [2020-07-21 15:40:53,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 15:40:53,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2020-07-21 15:40:53,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:40:53,417 INFO L225 Difference]: With dead ends: 2531 [2020-07-21 15:40:53,417 INFO L226 Difference]: Without dead ends: 1263 [2020-07-21 15:40:53,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:40:53,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2020-07-21 15:40:53,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1263. [2020-07-21 15:40:53,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1263 states. [2020-07-21 15:40:53,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1590 transitions. [2020-07-21 15:40:53,498 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1590 transitions. Word has length 183 [2020-07-21 15:40:53,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:40:53,499 INFO L479 AbstractCegarLoop]: Abstraction has 1263 states and 1590 transitions. [2020-07-21 15:40:53,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:40:53,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1590 transitions. [2020-07-21 15:40:53,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-07-21 15:40:53,508 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:40:53,509 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:40:53,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:53,723 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:40:53,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:40:53,723 INFO L82 PathProgramCache]: Analyzing trace with hash -155772784, now seen corresponding path program 2 times [2020-07-21 15:40:53,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:40:53,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655354870] [2020-07-21 15:40:53,724 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:54,125 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:40:54,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 15:40:54,126 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:40:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 15:40:54,223 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:40:54,671 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 15:40:54,671 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 15:40:54,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:40:55,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:40:55 BoogieIcfgContainer [2020-07-21 15:40:55,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 15:40:55,131 INFO L168 Benchmark]: Toolchain (without parser) took 18086.73 ms. Allocated memory was 144.7 MB in the beginning and 408.4 MB in the end (delta: 263.7 MB). Free memory was 101.8 MB in the beginning and 207.3 MB in the end (delta: -105.6 MB). Peak memory consumption was 158.1 MB. Max. memory is 7.1 GB. [2020-07-21 15:40:55,132 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 15:40:55,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.77 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.3 MB in the beginning and 168.3 MB in the end (delta: -66.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-07-21 15:40:55,134 INFO L168 Benchmark]: Boogie Preprocessor took 127.12 ms. Allocated memory is still 201.9 MB. Free memory was 167.6 MB in the beginning and 163.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-07-21 15:40:55,134 INFO L168 Benchmark]: RCFGBuilder took 3317.57 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 163.4 MB in the beginning and 193.6 MB in the end (delta: -30.2 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. [2020-07-21 15:40:55,135 INFO L168 Benchmark]: TraceAbstraction took 13976.83 ms. Allocated memory was 234.4 MB in the beginning and 408.4 MB in the end (delta: 174.1 MB). Free memory was 192.1 MB in the beginning and 207.3 MB in the end (delta: -15.2 MB). Peak memory consumption was 158.9 MB. Max. memory is 7.1 GB. [2020-07-21 15:40:55,139 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 659.77 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.3 MB in the beginning and 168.3 MB in the end (delta: -66.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.12 ms. Allocated memory is still 201.9 MB. Free memory was 167.6 MB in the beginning and 163.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3317.57 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 163.4 MB in the beginning and 193.6 MB in the end (delta: -30.2 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13976.83 ms. Allocated memory was 234.4 MB in the beginning and 408.4 MB in the end (delta: 174.1 MB). Free memory was 192.1 MB in the beginning and 207.3 MB in the end (delta: -15.2 MB). Peak memory consumption was 158.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 946]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L310] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L507] int cleanupTimeShifts = 4; [L648] int methAndRunningLastTime ; [L757] int pumpRunning = 0; [L758] int systemActive = 1; VAL [\old(cleanupTimeShifts)=86, \old(head)=35, \old(head)=48, \old(methAndRunningLastTime)=39, \old(methaneLevelCritical)=74, \old(pumpRunning)=81, \old(systemActive)=37, \old(waterLevel)=49, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L588] int retValue_acc ; [L589] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L593] FCALL select_helpers() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L594] FCALL select_features() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L595] CALL, EXPR valid_product() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L637] int retValue_acc ; [L640] retValue_acc = 1 [L641] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L595] RET, EXPR valid_product() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L595] tmp = valid_product() [L597] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L599] FCALL setup() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L600] CALL runTest() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L578] CALL __utac_acc__Specification2_spec__1() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L653] methAndRunningLastTime = 0 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L578] RET __utac_acc__Specification2_spec__1() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L579] CALL test() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L689] int splverifierCounter ; [L690] int tmp ; [L691] int tmp___0 ; [L692] int tmp___1 ; [L693] int tmp___2 ; [L696] splverifierCounter = 0 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L698] COND TRUE 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L700] COND TRUE splverifierCounter < 4 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L706] tmp = __VERIFIER_nondet_int() [L708] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L710] CALL waterRise() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L710] RET waterRise() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L716] tmp___0 = __VERIFIER_nondet_int() [L718] COND FALSE !(\read(tmp___0)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L726] tmp___2 = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp___2) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L743] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L764] COND FALSE !(\read(pumpRunning)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L771] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L773] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L793] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L796] COND TRUE ! pumpRunning VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L798] CALL, EXPR isHighWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L908] int retValue_acc ; [L909] int tmp ; [L910] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L914] CALL, EXPR isHighWaterSensorDry() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L127] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L914] RET, EXPR isHighWaterSensorDry() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L914] tmp = isHighWaterSensorDry() [L916] COND FALSE !(\read(tmp)) [L919] tmp___0 = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L921] retValue_acc = tmp___0 [L922] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L798] RET, EXPR isHighWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L798] tmp = isHighWaterLevel() [L800] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L802] CALL activatePump() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L827] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L831] CALL, EXPR isMethaneAlarm() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L852] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L856] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L856] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L856] retValue_acc = isMethaneLevelCritical() [L858] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L831] RET, EXPR isMethaneAlarm() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L831] tmp = isMethaneAlarm() [L833] COND FALSE !(\read(tmp)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L837] CALL activatePump__wrappee__highWaterSensor() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L821] pumpRunning = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L837] RET activatePump__wrappee__highWaterSensor() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L802] RET activatePump() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L773] RET processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L779] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L658] int tmp ; [L659] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L663] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=2] [L663] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L663] tmp = isMethaneLevelCritical() [L665] COND FALSE !(\read(tmp)) [L681] methAndRunningLastTime = 0 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L779] RET __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L743] RET timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L698] COND TRUE 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L700] COND TRUE splverifierCounter < 4 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L706] tmp = __VERIFIER_nondet_int() [L708] COND FALSE !(\read(tmp)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L716] tmp___0 = __VERIFIER_nondet_int() [L718] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=1, waterLevel=2] [L720] CALL changeMethaneLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L720] RET changeMethaneLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=1, waterLevel=2] [L726] tmp___2 = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp___2) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=1, waterLevel=2] [L743] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L764] COND TRUE \read(pumpRunning) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L766] CALL lowerWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L766] RET lowerWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L771] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L773] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L793] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L796] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L811] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L773] RET processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L779] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L658] int tmp ; [L659] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L663] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L663] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L663] tmp = isMethaneLevelCritical() [L665] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L667] CALL, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L863] int retValue_acc ; [L866] retValue_acc = pumpRunning [L867] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L667] RET, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L667] tmp___0 = isPumpRunning() [L669] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L670] COND FALSE !(\read(methAndRunningLastTime)) [L675] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L779] RET __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L743] RET timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=1, waterLevel=1] [L698] COND TRUE 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=1, waterLevel=1] [L700] COND TRUE splverifierCounter < 4 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=1, waterLevel=1] [L706] tmp = __VERIFIER_nondet_int() [L708] COND FALSE !(\read(tmp)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=1, waterLevel=1] [L716] tmp___0 = __VERIFIER_nondet_int() [L718] COND FALSE !(\read(tmp___0)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L726] tmp___2 = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp___2) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L743] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L764] COND TRUE \read(pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L766] CALL lowerWaterLevel() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L766] RET lowerWaterLevel() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L771] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L773] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L793] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L796] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L811] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L773] RET processEnvironment() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L779] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L658] int tmp ; [L659] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L663] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L663] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L663] tmp = isMethaneLevelCritical() [L665] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=0] [L667] CALL, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L863] int retValue_acc ; [L866] retValue_acc = pumpRunning [L867] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L667] RET, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=0] [L667] tmp___0 = isPumpRunning() [L669] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=0] [L670] COND TRUE \read(methAndRunningLastTime) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=0] [L672] CALL __automaton_fail() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L946] __VERIFIER_error() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 233 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.6s, OverallIterations: 14, TraceHistogramMax: 4, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2069 SDtfs, 1013 SDslu, 4144 SDs, 0 SdLazy, 1278 SolverSat, 347 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1541 GetRequests, 1483 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2052occurred 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: 0.8s AutomataMinimizationTime, 13 MinimizatonAttempts, 304 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1583 NumberOfCodeBlocks, 1271 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1526 ConstructedInterpolants, 0 QuantifiedInterpolants, 294087 SizeOfPredicates, 34 NumberOfNonLiveVariables, 9991 ConjunctsInSsa, 119 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 409/419 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...