./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 797436b26f0180d1dd4048b2036765c1f76ffc9f34d72e35837e9efcc5780486 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-21 04:16:21,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-21 04:16:21,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-21 04:16:21,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-21 04:16:21,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-21 04:16:21,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-21 04:16:21,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-21 04:16:21,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-21 04:16:21,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-21 04:16:21,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-21 04:16:21,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-21 04:16:21,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-21 04:16:21,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-21 04:16:21,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-21 04:16:21,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-21 04:16:21,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-21 04:16:21,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-21 04:16:21,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-21 04:16:21,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-21 04:16:21,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-21 04:16:21,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-21 04:16:21,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-21 04:16:21,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-21 04:16:21,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-21 04:16:21,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-21 04:16:21,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-21 04:16:21,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-21 04:16:21,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-21 04:16:21,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-21 04:16:21,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-21 04:16:21,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-21 04:16:21,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-21 04:16:21,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-21 04:16:21,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-21 04:16:21,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-21 04:16:21,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-21 04:16:21,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-21 04:16:21,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-21 04:16:21,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-21 04:16:21,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-21 04:16:21,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-21 04:16:21,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-02-21 04:16:21,728 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-21 04:16:21,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-21 04:16:21,729 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-21 04:16:21,729 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-21 04:16:21,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-21 04:16:21,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-21 04:16:21,731 INFO L138 SettingsManager]: * Use SBE=true [2022-02-21 04:16:21,731 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-02-21 04:16:21,731 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-02-21 04:16:21,732 INFO L138 SettingsManager]: * Use old map elimination=false [2022-02-21 04:16:21,732 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-02-21 04:16:21,733 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-02-21 04:16:21,733 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-02-21 04:16:21,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-21 04:16:21,733 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-21 04:16:21,733 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-02-21 04:16:21,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-21 04:16:21,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-21 04:16:21,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-21 04:16:21,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-02-21 04:16:21,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-02-21 04:16:21,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-02-21 04:16:21,735 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-21 04:16:21,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-21 04:16:21,735 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-02-21 04:16:21,735 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-21 04:16:21,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-02-21 04:16:21,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-21 04:16:21,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-21 04:16:21,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-21 04:16:21,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-21 04:16:21,738 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-21 04:16:21,738 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 797436b26f0180d1dd4048b2036765c1f76ffc9f34d72e35837e9efcc5780486 [2022-02-21 04:16:21,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-21 04:16:21,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-21 04:16:21,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-21 04:16:21,973 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-21 04:16:21,974 INFO L275 PluginConnector]: CDTParser initialized [2022-02-21 04:16:21,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c [2022-02-21 04:16:22,047 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b5c90e7e/d41416b217e6460a9137ee6ea4522fd8/FLAG486dd62b8 [2022-02-21 04:16:22,558 INFO L306 CDTParser]: Found 1 translation units. [2022-02-21 04:16:22,559 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c [2022-02-21 04:16:22,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b5c90e7e/d41416b217e6460a9137ee6ea4522fd8/FLAG486dd62b8 [2022-02-21 04:16:22,884 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b5c90e7e/d41416b217e6460a9137ee6ea4522fd8 [2022-02-21 04:16:22,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-21 04:16:22,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-21 04:16:22,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-21 04:16:22,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-21 04:16:22,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-21 04:16:22,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:16:22" (1/1) ... [2022-02-21 04:16:22,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e4d2730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:16:22, skipping insertion in model container [2022-02-21 04:16:22,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:16:22" (1/1) ... [2022-02-21 04:16:22,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-21 04:16:22,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-21 04:16:23,210 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c[17766,17779] [2022-02-21 04:16:23,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 04:16:23,225 INFO L203 MainTranslator]: Completed pre-run [2022-02-21 04:16:23,309 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c[17766,17779] [2022-02-21 04:16:23,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 04:16:23,329 INFO L208 MainTranslator]: Completed translation [2022-02-21 04:16:23,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:16:23 WrapperNode [2022-02-21 04:16:23,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-21 04:16:23,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-21 04:16:23,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-21 04:16:23,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-21 04:16:23,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:16:23" (1/1) ... [2022-02-21 04:16:23,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:16:23" (1/1) ... [2022-02-21 04:16:23,426 INFO L137 Inliner]: procedures = 57, calls = 159, calls flagged for inlining = 56, calls inlined = 99, statements flattened = 733 [2022-02-21 04:16:23,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-21 04:16:23,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-21 04:16:23,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-21 04:16:23,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-21 04:16:23,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:16:23" (1/1) ... [2022-02-21 04:16:23,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:16:23" (1/1) ... [2022-02-21 04:16:23,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:16:23" (1/1) ... [2022-02-21 04:16:23,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:16:23" (1/1) ... [2022-02-21 04:16:23,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:16:23" (1/1) ... [2022-02-21 04:16:23,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:16:23" (1/1) ... [2022-02-21 04:16:23,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:16:23" (1/1) ... [2022-02-21 04:16:23,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-21 04:16:23,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-21 04:16:23,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-21 04:16:23,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-21 04:16:23,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:16:23" (1/1) ... [2022-02-21 04:16:23,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 04:16:23,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 04:16:23,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-02-21 04:16:23,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-02-21 04:16:23,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-21 04:16:23,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-21 04:16:23,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-21 04:16:23,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-21 04:16:23,626 INFO L234 CfgBuilder]: Building ICFG [2022-02-21 04:16:23,628 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-21 04:16:24,119 INFO L275 CfgBuilder]: Performing block encoding [2022-02-21 04:16:24,140 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-21 04:16:24,140 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-21 04:16:24,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:16:24 BoogieIcfgContainer [2022-02-21 04:16:24,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-21 04:16:24,144 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-02-21 04:16:24,144 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-02-21 04:16:24,147 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-02-21 04:16:24,147 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 04:16:24,148 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.02 04:16:22" (1/3) ... [2022-02-21 04:16:24,152 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@45f9838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 04:16:24, skipping insertion in model container [2022-02-21 04:16:24,153 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 04:16:24,153 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:16:23" (2/3) ... [2022-02-21 04:16:24,153 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@45f9838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 04:16:24, skipping insertion in model container [2022-02-21 04:16:24,153 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 04:16:24,153 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:16:24" (3/3) ... [2022-02-21 04:16:24,155 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product48.cil.c [2022-02-21 04:16:24,230 INFO L359 BuchiCegarLoop]: Interprodecural is true [2022-02-21 04:16:24,230 INFO L360 BuchiCegarLoop]: Hoare is false [2022-02-21 04:16:24,230 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-02-21 04:16:24,230 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-02-21 04:16:24,230 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-02-21 04:16:24,230 INFO L364 BuchiCegarLoop]: Difference is false [2022-02-21 04:16:24,230 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-02-21 04:16:24,230 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2022-02-21 04:16:24,273 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 189 states, 188 states have (on average 1.3617021276595744) internal successors, (256), 188 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:24,328 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 123 [2022-02-21 04:16:24,328 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 04:16:24,328 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 04:16:24,333 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:16:24,333 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:16:24,334 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2022-02-21 04:16:24,336 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 189 states, 188 states have (on average 1.3617021276595744) internal successors, (256), 188 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:24,354 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 123 [2022-02-21 04:16:24,354 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 04:16:24,354 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 04:16:24,355 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:16:24,355 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:16:24,360 INFO L791 eck$LassoCheckResult]: Stem: 171#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 51#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret52#1, main_~retValue_acc~11#1, main_~tmp~9#1;havoc main_~retValue_acc~11#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 57#L176true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 89#L169true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~4#1;havoc valid_product_~retValue_acc~4#1;valid_product_~retValue_acc~4#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~4#1; 124#L184true main_#t~ret52#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret52#1;havoc main_#t~ret52#1; 3#L983true assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 148#L959true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 168#L492true assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet10#1, test_#t~nondet11#1, test_#t~nondet12#1, test_#t~nondet13#1, test_~splverifierCounter~0#1, test_~tmp~0#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~0#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 106#L203-2true [2022-02-21 04:16:24,361 INFO L793 eck$LassoCheckResult]: Loop: 106#L203-2true assume !false; 156#L204true assume test_~splverifierCounter~0#1 < 4; 113#L205true test_~tmp~0#1 := test_#t~nondet10#1;havoc test_#t~nondet10#1; 177#L213true assume !(0 != test_~tmp~0#1); 16#L213-2true test_~tmp___0~0#1 := test_#t~nondet11#1;havoc test_#t~nondet11#1; 104#L223true assume !(0 != test_~tmp___0~0#1); 72#L223-2true test_~tmp___2~0#1 := test_#t~nondet12#1;havoc test_#t~nondet12#1; 102#L233true assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 34#L481true assume { :end_inline_startSystem } true; 82#L241-2true assume { :begin_inline_timeShift } true; 132#L274true assume !(0 != ~pumpRunning~0); 179#L274-2true assume !(0 != ~systemActive~0); 139#L281-1true assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret27#1, __utac_acc__Specification2_spec__2_#t~ret28#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 153#L100-3true __utac_acc__Specification2_spec__2_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret27#1;havoc __utac_acc__Specification2_spec__2_#t~ret27#1; 105#L503true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; 95#L503-1true assume { :end_inline___utac_acc__Specification2_spec__2 } true; 121#L291true assume { :end_inline_timeShift } true; 106#L203-2true [2022-02-21 04:16:24,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:16:24,366 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 1 times [2022-02-21 04:16:24,375 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:16:24,386 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589266118] [2022-02-21 04:16:24,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:16:24,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:16:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:16:24,542 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:16:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:16:24,609 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:16:24,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:16:24,615 INFO L85 PathProgramCache]: Analyzing trace with hash -360184183, now seen corresponding path program 1 times [2022-02-21 04:16:24,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:16:24,617 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712079038] [2022-02-21 04:16:24,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:16:24,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:16:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 04:16:24,727 INFO L290 TraceCheckUtils]: 0: Hoare triple {195#true} assume !false; {195#true} is VALID [2022-02-21 04:16:24,727 INFO L290 TraceCheckUtils]: 1: Hoare triple {195#true} assume test_~splverifierCounter~0#1 < 4; {195#true} is VALID [2022-02-21 04:16:24,727 INFO L290 TraceCheckUtils]: 2: Hoare triple {195#true} test_~tmp~0#1 := test_#t~nondet10#1;havoc test_#t~nondet10#1; {195#true} is VALID [2022-02-21 04:16:24,728 INFO L290 TraceCheckUtils]: 3: Hoare triple {195#true} assume !(0 != test_~tmp~0#1); {195#true} is VALID [2022-02-21 04:16:24,728 INFO L290 TraceCheckUtils]: 4: Hoare triple {195#true} test_~tmp___0~0#1 := test_#t~nondet11#1;havoc test_#t~nondet11#1; {195#true} is VALID [2022-02-21 04:16:24,728 INFO L290 TraceCheckUtils]: 5: Hoare triple {195#true} assume !(0 != test_~tmp___0~0#1); {195#true} is VALID [2022-02-21 04:16:24,728 INFO L290 TraceCheckUtils]: 6: Hoare triple {195#true} test_~tmp___2~0#1 := test_#t~nondet12#1;havoc test_#t~nondet12#1; {195#true} is VALID [2022-02-21 04:16:24,729 INFO L290 TraceCheckUtils]: 7: Hoare triple {195#true} assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; {197#(<= 1 ~systemActive~0)} is VALID [2022-02-21 04:16:24,730 INFO L290 TraceCheckUtils]: 8: Hoare triple {197#(<= 1 ~systemActive~0)} assume { :end_inline_startSystem } true; {197#(<= 1 ~systemActive~0)} is VALID [2022-02-21 04:16:24,730 INFO L290 TraceCheckUtils]: 9: Hoare triple {197#(<= 1 ~systemActive~0)} assume { :begin_inline_timeShift } true; {197#(<= 1 ~systemActive~0)} is VALID [2022-02-21 04:16:24,732 INFO L290 TraceCheckUtils]: 10: Hoare triple {197#(<= 1 ~systemActive~0)} assume !(0 != ~pumpRunning~0); {197#(<= 1 ~systemActive~0)} is VALID [2022-02-21 04:16:24,733 INFO L290 TraceCheckUtils]: 11: Hoare triple {197#(<= 1 ~systemActive~0)} assume !(0 != ~systemActive~0); {196#false} is VALID [2022-02-21 04:16:24,733 INFO L290 TraceCheckUtils]: 12: Hoare triple {196#false} assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret27#1, __utac_acc__Specification2_spec__2_#t~ret28#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; {196#false} is VALID [2022-02-21 04:16:24,733 INFO L290 TraceCheckUtils]: 13: Hoare triple {196#false} __utac_acc__Specification2_spec__2_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret27#1;havoc __utac_acc__Specification2_spec__2_#t~ret27#1; {196#false} is VALID [2022-02-21 04:16:24,733 INFO L290 TraceCheckUtils]: 14: Hoare triple {196#false} assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; {196#false} is VALID [2022-02-21 04:16:24,733 INFO L290 TraceCheckUtils]: 15: Hoare triple {196#false} assume { :end_inline___utac_acc__Specification2_spec__2 } true; {196#false} is VALID [2022-02-21 04:16:24,733 INFO L290 TraceCheckUtils]: 16: Hoare triple {196#false} assume { :end_inline_timeShift } true; {196#false} is VALID [2022-02-21 04:16:24,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-21 04:16:24,735 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-21 04:16:24,735 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712079038] [2022-02-21 04:16:24,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712079038] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-21 04:16:24,736 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-21 04:16:24,736 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-21 04:16:24,736 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090778109] [2022-02-21 04:16:24,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-21 04:16:24,742 INFO L808 eck$LassoCheckResult]: loop already infeasible [2022-02-21 04:16:24,742 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-21 04:16:24,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-21 04:16:24,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-21 04:16:24,783 INFO L87 Difference]: Start difference. First operand has 189 states, 188 states have (on average 1.3617021276595744) internal successors, (256), 188 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:25,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:16:25,163 INFO L93 Difference]: Finished difference Result 362 states and 478 transitions. [2022-02-21 04:16:25,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-21 04:16:25,164 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:25,180 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 04:16:25,186 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 362 states and 478 transitions. [2022-02-21 04:16:25,209 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 236 [2022-02-21 04:16:25,234 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 362 states to 342 states and 457 transitions. [2022-02-21 04:16:25,235 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 342 [2022-02-21 04:16:25,235 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 342 [2022-02-21 04:16:25,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 342 states and 457 transitions. [2022-02-21 04:16:25,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-02-21 04:16:25,237 INFO L681 BuchiCegarLoop]: Abstraction has 342 states and 457 transitions. [2022-02-21 04:16:25,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states and 457 transitions. [2022-02-21 04:16:25,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 339. [2022-02-21 04:16:25,272 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-21 04:16:25,274 INFO L82 GeneralOperation]: Start isEquivalent. First operand 342 states and 457 transitions. Second operand has 339 states, 339 states have (on average 1.336283185840708) internal successors, (453), 338 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:25,275 INFO L74 IsIncluded]: Start isIncluded. First operand 342 states and 457 transitions. Second operand has 339 states, 339 states have (on average 1.336283185840708) internal successors, (453), 338 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:25,277 INFO L87 Difference]: Start difference. First operand 342 states and 457 transitions. Second operand has 339 states, 339 states have (on average 1.336283185840708) internal successors, (453), 338 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:25,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:16:25,297 INFO L93 Difference]: Finished difference Result 342 states and 457 transitions. [2022-02-21 04:16:25,297 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 457 transitions. [2022-02-21 04:16:25,300 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:16:25,300 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:16:25,301 INFO L74 IsIncluded]: Start isIncluded. First operand has 339 states, 339 states have (on average 1.336283185840708) internal successors, (453), 338 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 342 states and 457 transitions. [2022-02-21 04:16:25,302 INFO L87 Difference]: Start difference. First operand has 339 states, 339 states have (on average 1.336283185840708) internal successors, (453), 338 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 342 states and 457 transitions. [2022-02-21 04:16:25,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:16:25,315 INFO L93 Difference]: Finished difference Result 342 states and 457 transitions. [2022-02-21 04:16:25,315 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 457 transitions. [2022-02-21 04:16:25,316 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:16:25,316 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:16:25,316 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-21 04:16:25,316 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-21 04:16:25,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 339 states have (on average 1.336283185840708) internal successors, (453), 338 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 453 transitions. [2022-02-21 04:16:25,331 INFO L704 BuchiCegarLoop]: Abstraction has 339 states and 453 transitions. [2022-02-21 04:16:25,331 INFO L587 BuchiCegarLoop]: Abstraction has 339 states and 453 transitions. [2022-02-21 04:16:25,331 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2022-02-21 04:16:25,331 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 339 states and 453 transitions. [2022-02-21 04:16:25,333 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 233 [2022-02-21 04:16:25,333 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 04:16:25,333 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 04:16:25,334 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:16:25,334 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:16:25,334 INFO L791 eck$LassoCheckResult]: Stem: 757#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 646#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret52#1, main_~retValue_acc~11#1, main_~tmp~9#1;havoc main_~retValue_acc~11#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 647#L176 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 659#L169 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~4#1;havoc valid_product_~retValue_acc~4#1;valid_product_~retValue_acc~4#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~4#1; 697#L184 main_#t~ret52#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret52#1;havoc main_#t~ret52#1; 560#L983 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 561#L959 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 742#L492 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet10#1, test_#t~nondet11#1, test_#t~nondet12#1, test_#t~nondet13#1, test_~splverifierCounter~0#1, test_~tmp~0#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~0#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 714#L203-2 [2022-02-21 04:16:25,334 INFO L793 eck$LassoCheckResult]: Loop: 714#L203-2 assume !false; 715#L204 assume test_~splverifierCounter~0#1 < 4; 801#L205 test_~tmp~0#1 := test_#t~nondet10#1;havoc test_#t~nondet10#1; 896#L213 assume !(0 != test_~tmp~0#1); 894#L213-2 test_~tmp___0~0#1 := test_#t~nondet11#1;havoc test_#t~nondet11#1; 892#L223 assume !(0 != test_~tmp___0~0#1); 889#L223-2 test_~tmp___2~0#1 := test_#t~nondet12#1;havoc test_#t~nondet12#1; 887#L233 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet13#1;havoc test_#t~nondet13#1; 885#L241 assume !(0 != test_~tmp___1~0#1); 618#L241-2 assume { :begin_inline_timeShift } true; 881#L274 assume !(0 != ~pumpRunning~0); 878#L274-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret15#1, processEnvironment_~tmp~2#1;havoc processEnvironment_~tmp~2#1; 876#L332 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret14#1, processEnvironment__wrappee__methaneQuery_~tmp~1#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1#1; 874#L306-2 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 870#L298-3 assume { :end_inline_processEnvironment__wrappee__base } true; 843#L306-3 assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; 840#L332-1 assume { :end_inline_processEnvironment } true; 838#L281-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret27#1, __utac_acc__Specification2_spec__2_#t~ret28#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 747#L100-3 __utac_acc__Specification2_spec__2_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret27#1;havoc __utac_acc__Specification2_spec__2_#t~ret27#1; 712#L503 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; 613#L503-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 704#L291 assume { :end_inline_timeShift } true; 714#L203-2 [2022-02-21 04:16:25,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:16:25,335 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 2 times [2022-02-21 04:16:25,335 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:16:25,336 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024679534] [2022-02-21 04:16:25,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:16:25,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:16:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:16:25,352 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:16:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:16:25,378 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:16:25,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:16:25,379 INFO L85 PathProgramCache]: Analyzing trace with hash 81840663, now seen corresponding path program 1 times [2022-02-21 04:16:25,379 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:16:25,379 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624135818] [2022-02-21 04:16:25,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:16:25,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:16:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 04:16:25,397 INFO L290 TraceCheckUtils]: 0: Hoare triple {1588#true} assume !false; {1588#true} is VALID [2022-02-21 04:16:25,397 INFO L290 TraceCheckUtils]: 1: Hoare triple {1588#true} assume test_~splverifierCounter~0#1 < 4; {1588#true} is VALID [2022-02-21 04:16:25,398 INFO L290 TraceCheckUtils]: 2: Hoare triple {1588#true} test_~tmp~0#1 := test_#t~nondet10#1;havoc test_#t~nondet10#1; {1588#true} is VALID [2022-02-21 04:16:25,398 INFO L290 TraceCheckUtils]: 3: Hoare triple {1588#true} assume !(0 != test_~tmp~0#1); {1588#true} is VALID [2022-02-21 04:16:25,398 INFO L290 TraceCheckUtils]: 4: Hoare triple {1588#true} test_~tmp___0~0#1 := test_#t~nondet11#1;havoc test_#t~nondet11#1; {1588#true} is VALID [2022-02-21 04:16:25,398 INFO L290 TraceCheckUtils]: 5: Hoare triple {1588#true} assume !(0 != test_~tmp___0~0#1); {1588#true} is VALID [2022-02-21 04:16:25,398 INFO L290 TraceCheckUtils]: 6: Hoare triple {1588#true} test_~tmp___2~0#1 := test_#t~nondet12#1;havoc test_#t~nondet12#1; {1588#true} is VALID [2022-02-21 04:16:25,399 INFO L290 TraceCheckUtils]: 7: Hoare triple {1588#true} assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet13#1;havoc test_#t~nondet13#1; {1588#true} is VALID [2022-02-21 04:16:25,399 INFO L290 TraceCheckUtils]: 8: Hoare triple {1588#true} assume !(0 != test_~tmp___1~0#1); {1588#true} is VALID [2022-02-21 04:16:25,399 INFO L290 TraceCheckUtils]: 9: Hoare triple {1588#true} assume { :begin_inline_timeShift } true; {1588#true} is VALID [2022-02-21 04:16:25,400 INFO L290 TraceCheckUtils]: 10: Hoare triple {1588#true} assume !(0 != ~pumpRunning~0); {1590#(= ~pumpRunning~0 0)} is VALID [2022-02-21 04:16:25,400 INFO L290 TraceCheckUtils]: 11: Hoare triple {1590#(= ~pumpRunning~0 0)} assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret15#1, processEnvironment_~tmp~2#1;havoc processEnvironment_~tmp~2#1; {1590#(= ~pumpRunning~0 0)} is VALID [2022-02-21 04:16:25,401 INFO L290 TraceCheckUtils]: 12: Hoare triple {1590#(= ~pumpRunning~0 0)} assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret14#1, processEnvironment__wrappee__methaneQuery_~tmp~1#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1#1; {1590#(= ~pumpRunning~0 0)} is VALID [2022-02-21 04:16:25,401 INFO L290 TraceCheckUtils]: 13: Hoare triple {1590#(= ~pumpRunning~0 0)} assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; {1589#false} is VALID [2022-02-21 04:16:25,401 INFO L290 TraceCheckUtils]: 14: Hoare triple {1589#false} assume { :end_inline_processEnvironment__wrappee__base } true; {1589#false} is VALID [2022-02-21 04:16:25,402 INFO L290 TraceCheckUtils]: 15: Hoare triple {1589#false} assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; {1589#false} is VALID [2022-02-21 04:16:25,402 INFO L290 TraceCheckUtils]: 16: Hoare triple {1589#false} assume { :end_inline_processEnvironment } true; {1589#false} is VALID [2022-02-21 04:16:25,402 INFO L290 TraceCheckUtils]: 17: Hoare triple {1589#false} assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret27#1, __utac_acc__Specification2_spec__2_#t~ret28#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; {1589#false} is VALID [2022-02-21 04:16:25,402 INFO L290 TraceCheckUtils]: 18: Hoare triple {1589#false} __utac_acc__Specification2_spec__2_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret27#1;havoc __utac_acc__Specification2_spec__2_#t~ret27#1; {1589#false} is VALID [2022-02-21 04:16:25,403 INFO L290 TraceCheckUtils]: 19: Hoare triple {1589#false} assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; {1589#false} is VALID [2022-02-21 04:16:25,403 INFO L290 TraceCheckUtils]: 20: Hoare triple {1589#false} assume { :end_inline___utac_acc__Specification2_spec__2 } true; {1589#false} is VALID [2022-02-21 04:16:25,403 INFO L290 TraceCheckUtils]: 21: Hoare triple {1589#false} assume { :end_inline_timeShift } true; {1589#false} is VALID [2022-02-21 04:16:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-21 04:16:25,404 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-21 04:16:25,404 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624135818] [2022-02-21 04:16:25,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624135818] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-21 04:16:25,404 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-21 04:16:25,404 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-21 04:16:25,405 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489475574] [2022-02-21 04:16:25,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-21 04:16:25,405 INFO L808 eck$LassoCheckResult]: loop already infeasible [2022-02-21 04:16:25,405 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-21 04:16:25,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-21 04:16:25,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-21 04:16:25,406 INFO L87 Difference]: Start difference. First operand 339 states and 453 transitions. cyclomatic complexity: 117 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:25,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:16:25,699 INFO L93 Difference]: Finished difference Result 469 states and 606 transitions. [2022-02-21 04:16:25,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-21 04:16:25,699 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:25,719 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 04:16:25,720 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 469 states and 606 transitions. [2022-02-21 04:16:25,752 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 331 [2022-02-21 04:16:25,768 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 469 states to 469 states and 606 transitions. [2022-02-21 04:16:25,768 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 469 [2022-02-21 04:16:25,769 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 469 [2022-02-21 04:16:25,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 469 states and 606 transitions. [2022-02-21 04:16:25,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-02-21 04:16:25,773 INFO L681 BuchiCegarLoop]: Abstraction has 469 states and 606 transitions. [2022-02-21 04:16:25,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states and 606 transitions. [2022-02-21 04:16:25,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 469. [2022-02-21 04:16:25,789 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-21 04:16:25,790 INFO L82 GeneralOperation]: Start isEquivalent. First operand 469 states and 606 transitions. Second operand has 469 states, 469 states have (on average 1.2921108742004264) internal successors, (606), 468 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:25,791 INFO L74 IsIncluded]: Start isIncluded. First operand 469 states and 606 transitions. Second operand has 469 states, 469 states have (on average 1.2921108742004264) internal successors, (606), 468 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:25,792 INFO L87 Difference]: Start difference. First operand 469 states and 606 transitions. Second operand has 469 states, 469 states have (on average 1.2921108742004264) internal successors, (606), 468 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:25,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:16:25,807 INFO L93 Difference]: Finished difference Result 469 states and 606 transitions. [2022-02-21 04:16:25,808 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 606 transitions. [2022-02-21 04:16:25,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:16:25,809 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:16:25,810 INFO L74 IsIncluded]: Start isIncluded. First operand has 469 states, 469 states have (on average 1.2921108742004264) internal successors, (606), 468 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 469 states and 606 transitions. [2022-02-21 04:16:25,811 INFO L87 Difference]: Start difference. First operand has 469 states, 469 states have (on average 1.2921108742004264) internal successors, (606), 468 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 469 states and 606 transitions. [2022-02-21 04:16:25,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:16:25,827 INFO L93 Difference]: Finished difference Result 469 states and 606 transitions. [2022-02-21 04:16:25,827 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 606 transitions. [2022-02-21 04:16:25,828 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:16:25,828 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:16:25,828 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-21 04:16:25,828 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-21 04:16:25,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 469 states have (on average 1.2921108742004264) internal successors, (606), 468 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:25,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 606 transitions. [2022-02-21 04:16:25,844 INFO L704 BuchiCegarLoop]: Abstraction has 469 states and 606 transitions. [2022-02-21 04:16:25,844 INFO L587 BuchiCegarLoop]: Abstraction has 469 states and 606 transitions. [2022-02-21 04:16:25,845 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2022-02-21 04:16:25,845 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 469 states and 606 transitions. [2022-02-21 04:16:25,847 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 331 [2022-02-21 04:16:25,847 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 04:16:25,847 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 04:16:25,848 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:16:25,848 INFO L843 BuchiCegarLoop]: Counterexample loop 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] [2022-02-21 04:16:25,848 INFO L791 eck$LassoCheckResult]: Stem: 2275#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 2145#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret52#1, main_~retValue_acc~11#1, main_~tmp~9#1;havoc main_~retValue_acc~11#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 2146#L176 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2156#L169 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~4#1;havoc valid_product_~retValue_acc~4#1;valid_product_~retValue_acc~4#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~4#1; 2203#L184 main_#t~ret52#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret52#1;havoc main_#t~ret52#1; 2060#L983 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 2061#L959 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 2259#L492 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet10#1, test_#t~nondet11#1, test_#t~nondet12#1, test_#t~nondet13#1, test_~splverifierCounter~0#1, test_~tmp~0#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~0#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 2273#L203-2 [2022-02-21 04:16:25,849 INFO L793 eck$LassoCheckResult]: Loop: 2273#L203-2 assume !false; 2266#L204 assume test_~splverifierCounter~0#1 < 4; 2229#L205 test_~tmp~0#1 := test_#t~nondet10#1;havoc test_#t~nondet10#1; 2230#L213 assume !(0 != test_~tmp~0#1); 2322#L213-2 test_~tmp___0~0#1 := test_#t~nondet11#1;havoc test_#t~nondet11#1; 2313#L223 assume !(0 != test_~tmp___0~0#1); 2312#L223-2 test_~tmp___2~0#1 := test_#t~nondet12#1;havoc test_#t~nondet12#1; 2380#L233 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet13#1;havoc test_#t~nondet13#1; 2128#L241 assume !(0 != test_~tmp___1~0#1); 2118#L241-2 assume { :begin_inline_timeShift } true; 2192#L274 assume !(0 != ~pumpRunning~0); 2243#L274-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret15#1, processEnvironment_~tmp~2#1;havoc processEnvironment_~tmp~2#1; 2122#L332 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret14#1, processEnvironment__wrappee__methaneQuery_~tmp~1#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1#1; 2123#L306-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret26#1, isHighWaterLevel_~retValue_acc~7#1, isHighWaterLevel_~tmp~4#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~7#1;havoc isHighWaterLevel_~tmp~4#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 2155#L140-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 2160#L145-1 isHighWaterLevel_#t~ret26#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~4#1 := isHighWaterLevel_#t~ret26#1;havoc isHighWaterLevel_#t~ret26#1; 2095#L451-3 assume 0 != isHighWaterLevel_~tmp~4#1;isHighWaterLevel_~tmp___0~1#1 := 0; 2096#L451-5 isHighWaterLevel_~retValue_acc~7#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~7#1; 2075#L457-1 processEnvironment__wrappee__methaneQuery_#t~ret14#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__methaneQuery_~tmp~1#1 := processEnvironment__wrappee__methaneQuery_#t~ret14#1;havoc processEnvironment__wrappee__methaneQuery_#t~ret14#1; 2064#L310-3 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 2066#L298-2 assume { :end_inline_processEnvironment__wrappee__base } true; 2394#L306-3 assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; 2392#L332-1 assume { :end_inline_processEnvironment } true; 2391#L281-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret27#1, __utac_acc__Specification2_spec__2_#t~ret28#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 2390#L100-3 __utac_acc__Specification2_spec__2_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret27#1;havoc __utac_acc__Specification2_spec__2_#t~ret27#1; 2388#L503 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; 2385#L503-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 2384#L291 assume { :end_inline_timeShift } true; 2273#L203-2 [2022-02-21 04:16:25,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:16:25,849 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 3 times [2022-02-21 04:16:25,850 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:16:25,850 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146728076] [2022-02-21 04:16:25,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:16:25,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:16:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:16:25,862 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:16:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:16:25,874 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:16:25,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:16:25,875 INFO L85 PathProgramCache]: Analyzing trace with hash -920325171, now seen corresponding path program 1 times [2022-02-21 04:16:25,875 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:16:25,875 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765052077] [2022-02-21 04:16:25,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:16:25,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:16:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 04:16:25,919 INFO L290 TraceCheckUtils]: 0: Hoare triple {3472#true} assume !false; {3472#true} is VALID [2022-02-21 04:16:25,920 INFO L290 TraceCheckUtils]: 1: Hoare triple {3472#true} assume test_~splverifierCounter~0#1 < 4; {3472#true} is VALID [2022-02-21 04:16:25,920 INFO L290 TraceCheckUtils]: 2: Hoare triple {3472#true} test_~tmp~0#1 := test_#t~nondet10#1;havoc test_#t~nondet10#1; {3472#true} is VALID [2022-02-21 04:16:25,920 INFO L290 TraceCheckUtils]: 3: Hoare triple {3472#true} assume !(0 != test_~tmp~0#1); {3472#true} is VALID [2022-02-21 04:16:25,920 INFO L290 TraceCheckUtils]: 4: Hoare triple {3472#true} test_~tmp___0~0#1 := test_#t~nondet11#1;havoc test_#t~nondet11#1; {3472#true} is VALID [2022-02-21 04:16:25,920 INFO L290 TraceCheckUtils]: 5: Hoare triple {3472#true} assume !(0 != test_~tmp___0~0#1); {3472#true} is VALID [2022-02-21 04:16:25,921 INFO L290 TraceCheckUtils]: 6: Hoare triple {3472#true} test_~tmp___2~0#1 := test_#t~nondet12#1;havoc test_#t~nondet12#1; {3472#true} is VALID [2022-02-21 04:16:25,921 INFO L290 TraceCheckUtils]: 7: Hoare triple {3472#true} assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet13#1;havoc test_#t~nondet13#1; {3472#true} is VALID [2022-02-21 04:16:25,921 INFO L290 TraceCheckUtils]: 8: Hoare triple {3472#true} assume !(0 != test_~tmp___1~0#1); {3472#true} is VALID [2022-02-21 04:16:25,921 INFO L290 TraceCheckUtils]: 9: Hoare triple {3472#true} assume { :begin_inline_timeShift } true; {3472#true} is VALID [2022-02-21 04:16:25,921 INFO L290 TraceCheckUtils]: 10: Hoare triple {3472#true} assume !(0 != ~pumpRunning~0); {3472#true} is VALID [2022-02-21 04:16:25,922 INFO L290 TraceCheckUtils]: 11: Hoare triple {3472#true} assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret15#1, processEnvironment_~tmp~2#1;havoc processEnvironment_~tmp~2#1; {3472#true} is VALID [2022-02-21 04:16:25,922 INFO L290 TraceCheckUtils]: 12: Hoare triple {3472#true} assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret14#1, processEnvironment__wrappee__methaneQuery_~tmp~1#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1#1; {3472#true} is VALID [2022-02-21 04:16:25,922 INFO L290 TraceCheckUtils]: 13: Hoare triple {3472#true} assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret26#1, isHighWaterLevel_~retValue_acc~7#1, isHighWaterLevel_~tmp~4#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~7#1;havoc isHighWaterLevel_~tmp~4#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; {3472#true} is VALID [2022-02-21 04:16:25,923 INFO L290 TraceCheckUtils]: 14: Hoare triple {3472#true} assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; {3474#(= |ULTIMATE.start_isHighWaterSensorDry_#res#1| 0)} is VALID [2022-02-21 04:16:25,923 INFO L290 TraceCheckUtils]: 15: Hoare triple {3474#(= |ULTIMATE.start_isHighWaterSensorDry_#res#1| 0)} isHighWaterLevel_#t~ret26#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~4#1 := isHighWaterLevel_#t~ret26#1;havoc isHighWaterLevel_#t~ret26#1; {3475#(= |ULTIMATE.start_isHighWaterLevel_~tmp~4#1| 0)} is VALID [2022-02-21 04:16:25,924 INFO L290 TraceCheckUtils]: 16: Hoare triple {3475#(= |ULTIMATE.start_isHighWaterLevel_~tmp~4#1| 0)} assume 0 != isHighWaterLevel_~tmp~4#1;isHighWaterLevel_~tmp___0~1#1 := 0; {3473#false} is VALID [2022-02-21 04:16:25,924 INFO L290 TraceCheckUtils]: 17: Hoare triple {3473#false} isHighWaterLevel_~retValue_acc~7#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~7#1; {3473#false} is VALID [2022-02-21 04:16:25,924 INFO L290 TraceCheckUtils]: 18: Hoare triple {3473#false} processEnvironment__wrappee__methaneQuery_#t~ret14#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__methaneQuery_~tmp~1#1 := processEnvironment__wrappee__methaneQuery_#t~ret14#1;havoc processEnvironment__wrappee__methaneQuery_#t~ret14#1; {3473#false} is VALID [2022-02-21 04:16:25,924 INFO L290 TraceCheckUtils]: 19: Hoare triple {3473#false} assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1#1);assume { :begin_inline_processEnvironment__wrappee__base } true; {3473#false} is VALID [2022-02-21 04:16:25,924 INFO L290 TraceCheckUtils]: 20: Hoare triple {3473#false} assume { :end_inline_processEnvironment__wrappee__base } true; {3473#false} is VALID [2022-02-21 04:16:25,925 INFO L290 TraceCheckUtils]: 21: Hoare triple {3473#false} assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; {3473#false} is VALID [2022-02-21 04:16:25,925 INFO L290 TraceCheckUtils]: 22: Hoare triple {3473#false} assume { :end_inline_processEnvironment } true; {3473#false} is VALID [2022-02-21 04:16:25,925 INFO L290 TraceCheckUtils]: 23: Hoare triple {3473#false} assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret27#1, __utac_acc__Specification2_spec__2_#t~ret28#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; {3473#false} is VALID [2022-02-21 04:16:25,925 INFO L290 TraceCheckUtils]: 24: Hoare triple {3473#false} __utac_acc__Specification2_spec__2_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret27#1;havoc __utac_acc__Specification2_spec__2_#t~ret27#1; {3473#false} is VALID [2022-02-21 04:16:25,925 INFO L290 TraceCheckUtils]: 25: Hoare triple {3473#false} assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; {3473#false} is VALID [2022-02-21 04:16:25,925 INFO L290 TraceCheckUtils]: 26: Hoare triple {3473#false} assume { :end_inline___utac_acc__Specification2_spec__2 } true; {3473#false} is VALID [2022-02-21 04:16:25,926 INFO L290 TraceCheckUtils]: 27: Hoare triple {3473#false} assume { :end_inline_timeShift } true; {3473#false} is VALID [2022-02-21 04:16:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-21 04:16:25,926 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-21 04:16:25,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765052077] [2022-02-21 04:16:25,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765052077] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-21 04:16:25,927 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-21 04:16:25,927 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-21 04:16:25,927 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006691455] [2022-02-21 04:16:25,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-21 04:16:25,927 INFO L808 eck$LassoCheckResult]: loop already infeasible [2022-02-21 04:16:25,928 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-21 04:16:25,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-21 04:16:25,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-21 04:16:25,928 INFO L87 Difference]: Start difference. First operand 469 states and 606 transitions. cyclomatic complexity: 140 Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:26,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:16:26,613 INFO L93 Difference]: Finished difference Result 1343 states and 1706 transitions. [2022-02-21 04:16:26,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-21 04:16:26,614 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:26,631 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 04:16:26,634 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1343 states and 1706 transitions. [2022-02-21 04:16:26,712 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 961 [2022-02-21 04:16:26,781 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1343 states to 1343 states and 1706 transitions. [2022-02-21 04:16:26,781 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1343 [2022-02-21 04:16:26,782 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1343 [2022-02-21 04:16:26,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1343 states and 1706 transitions. [2022-02-21 04:16:26,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-02-21 04:16:26,784 INFO L681 BuchiCegarLoop]: Abstraction has 1343 states and 1706 transitions. [2022-02-21 04:16:26,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states and 1706 transitions. [2022-02-21 04:16:26,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 493. [2022-02-21 04:16:26,795 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-21 04:16:26,796 INFO L82 GeneralOperation]: Start isEquivalent. First operand 1343 states and 1706 transitions. Second operand has 493 states, 493 states have (on average 1.2778904665314401) internal successors, (630), 492 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:26,797 INFO L74 IsIncluded]: Start isIncluded. First operand 1343 states and 1706 transitions. Second operand has 493 states, 493 states have (on average 1.2778904665314401) internal successors, (630), 492 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:26,798 INFO L87 Difference]: Start difference. First operand 1343 states and 1706 transitions. Second operand has 493 states, 493 states have (on average 1.2778904665314401) internal successors, (630), 492 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:26,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:16:26,863 INFO L93 Difference]: Finished difference Result 1343 states and 1706 transitions. [2022-02-21 04:16:26,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1706 transitions. [2022-02-21 04:16:26,865 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:16:26,866 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:16:26,867 INFO L74 IsIncluded]: Start isIncluded. First operand has 493 states, 493 states have (on average 1.2778904665314401) internal successors, (630), 492 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 1343 states and 1706 transitions. [2022-02-21 04:16:26,868 INFO L87 Difference]: Start difference. First operand has 493 states, 493 states have (on average 1.2778904665314401) internal successors, (630), 492 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 1343 states and 1706 transitions. [2022-02-21 04:16:26,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:16:26,936 INFO L93 Difference]: Finished difference Result 1343 states and 1706 transitions. [2022-02-21 04:16:26,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1706 transitions. [2022-02-21 04:16:26,938 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:16:26,938 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:16:26,938 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-21 04:16:26,938 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-21 04:16:26,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 493 states have (on average 1.2778904665314401) internal successors, (630), 492 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:26,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 630 transitions. [2022-02-21 04:16:26,952 INFO L704 BuchiCegarLoop]: Abstraction has 493 states and 630 transitions. [2022-02-21 04:16:26,952 INFO L587 BuchiCegarLoop]: Abstraction has 493 states and 630 transitions. [2022-02-21 04:16:26,952 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2022-02-21 04:16:26,952 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 493 states and 630 transitions. [2022-02-21 04:16:26,955 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 347 [2022-02-21 04:16:26,955 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 04:16:26,955 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 04:16:26,955 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:16:26,956 INFO L843 BuchiCegarLoop]: Counterexample loop 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] [2022-02-21 04:16:26,956 INFO L791 eck$LassoCheckResult]: Stem: 5058#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 4909#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret52#1, main_~retValue_acc~11#1, main_~tmp~9#1;havoc main_~retValue_acc~11#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 4910#L176 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 4922#L169 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~4#1;havoc valid_product_~retValue_acc~4#1;valid_product_~retValue_acc~4#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~4#1; 4969#L184 main_#t~ret52#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret52#1;havoc main_#t~ret52#1; 4822#L983 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 4823#L959 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 5036#L492 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet10#1, test_#t~nondet11#1, test_#t~nondet12#1, test_#t~nondet13#1, test_~splverifierCounter~0#1, test_~tmp~0#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~0#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 5057#L203-2 [2022-02-21 04:16:26,956 INFO L793 eck$LassoCheckResult]: Loop: 5057#L203-2 assume !false; 5146#L204 assume test_~splverifierCounter~0#1 < 4; 5145#L205 test_~tmp~0#1 := test_#t~nondet10#1;havoc test_#t~nondet10#1; 5099#L213 assume !(0 != test_~tmp~0#1); 5094#L213-2 test_~tmp___0~0#1 := test_#t~nondet11#1;havoc test_#t~nondet11#1; 5095#L223 assume !(0 != test_~tmp___0~0#1); 5088#L223-2 test_~tmp___2~0#1 := test_#t~nondet12#1;havoc test_#t~nondet12#1; 5089#L233 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 4881#L481 assume { :end_inline_startSystem } true; 4882#L241-2 assume { :begin_inline_timeShift } true; 4960#L274 assume !(0 != ~pumpRunning~0); 5063#L274-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret15#1, processEnvironment_~tmp~2#1;havoc processEnvironment_~tmp~2#1; 5064#L332 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret14#1, processEnvironment__wrappee__methaneQuery_~tmp~1#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1#1; 5120#L306-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret26#1, isHighWaterLevel_~retValue_acc~7#1, isHighWaterLevel_~tmp~4#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~7#1;havoc isHighWaterLevel_~tmp~4#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 4923#L140-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 4924#L145-1 isHighWaterLevel_#t~ret26#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~4#1 := isHighWaterLevel_#t~ret26#1;havoc isHighWaterLevel_#t~ret26#1; 4858#L451-3 assume !(0 != isHighWaterLevel_~tmp~4#1);isHighWaterLevel_~tmp___0~1#1 := 1; 4859#L451-5 isHighWaterLevel_~retValue_acc~7#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~7#1; 4837#L457-1 processEnvironment__wrappee__methaneQuery_#t~ret14#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__methaneQuery_~tmp~1#1 := processEnvironment__wrappee__methaneQuery_#t~ret14#1;havoc processEnvironment__wrappee__methaneQuery_#t~ret14#1; 4826#L310-3 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 4828#L298-2 assume { :end_inline_processEnvironment__wrappee__base } true; 4847#L306-3 assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; 4844#L332-1 assume { :end_inline_processEnvironment } true; 5136#L281-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret27#1, __utac_acc__Specification2_spec__2_#t~ret28#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 5132#L100-3 __utac_acc__Specification2_spec__2_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret27#1;havoc __utac_acc__Specification2_spec__2_#t~ret27#1; 5133#L503 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; 5149#L503-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 5148#L291 assume { :end_inline_timeShift } true; 5057#L203-2 [2022-02-21 04:16:26,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:16:26,957 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 4 times [2022-02-21 04:16:26,957 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:16:26,957 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665589764] [2022-02-21 04:16:26,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:16:26,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:16:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:16:26,979 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:16:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:16:27,000 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:16:27,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:16:27,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1556305369, now seen corresponding path program 1 times [2022-02-21 04:16:27,001 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:16:27,001 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278909850] [2022-02-21 04:16:27,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:16:27,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:16:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 04:16:27,064 INFO L290 TraceCheckUtils]: 0: Hoare triple {8006#true} assume !false; {8006#true} is VALID [2022-02-21 04:16:27,064 INFO L290 TraceCheckUtils]: 1: Hoare triple {8006#true} assume test_~splverifierCounter~0#1 < 4; {8006#true} is VALID [2022-02-21 04:16:27,064 INFO L290 TraceCheckUtils]: 2: Hoare triple {8006#true} test_~tmp~0#1 := test_#t~nondet10#1;havoc test_#t~nondet10#1; {8006#true} is VALID [2022-02-21 04:16:27,064 INFO L290 TraceCheckUtils]: 3: Hoare triple {8006#true} assume !(0 != test_~tmp~0#1); {8006#true} is VALID [2022-02-21 04:16:27,065 INFO L290 TraceCheckUtils]: 4: Hoare triple {8006#true} test_~tmp___0~0#1 := test_#t~nondet11#1;havoc test_#t~nondet11#1; {8006#true} is VALID [2022-02-21 04:16:27,065 INFO L290 TraceCheckUtils]: 5: Hoare triple {8006#true} assume !(0 != test_~tmp___0~0#1); {8006#true} is VALID [2022-02-21 04:16:27,065 INFO L290 TraceCheckUtils]: 6: Hoare triple {8006#true} test_~tmp___2~0#1 := test_#t~nondet12#1;havoc test_#t~nondet12#1; {8006#true} is VALID [2022-02-21 04:16:27,065 INFO L290 TraceCheckUtils]: 7: Hoare triple {8006#true} assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; {8006#true} is VALID [2022-02-21 04:16:27,068 INFO L290 TraceCheckUtils]: 8: Hoare triple {8006#true} assume { :end_inline_startSystem } true; {8006#true} is VALID [2022-02-21 04:16:27,068 INFO L290 TraceCheckUtils]: 9: Hoare triple {8006#true} assume { :begin_inline_timeShift } true; {8006#true} is VALID [2022-02-21 04:16:27,068 INFO L290 TraceCheckUtils]: 10: Hoare triple {8006#true} assume !(0 != ~pumpRunning~0); {8006#true} is VALID [2022-02-21 04:16:27,068 INFO L290 TraceCheckUtils]: 11: Hoare triple {8006#true} assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret15#1, processEnvironment_~tmp~2#1;havoc processEnvironment_~tmp~2#1; {8006#true} is VALID [2022-02-21 04:16:27,069 INFO L290 TraceCheckUtils]: 12: Hoare triple {8006#true} assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret14#1, processEnvironment__wrappee__methaneQuery_~tmp~1#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1#1; {8006#true} is VALID [2022-02-21 04:16:27,069 INFO L290 TraceCheckUtils]: 13: Hoare triple {8006#true} assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret26#1, isHighWaterLevel_~retValue_acc~7#1, isHighWaterLevel_~tmp~4#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~7#1;havoc isHighWaterLevel_~tmp~4#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; {8006#true} is VALID [2022-02-21 04:16:27,069 INFO L290 TraceCheckUtils]: 14: Hoare triple {8006#true} assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; {8006#true} is VALID [2022-02-21 04:16:27,083 INFO L290 TraceCheckUtils]: 15: Hoare triple {8006#true} isHighWaterLevel_#t~ret26#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~4#1 := isHighWaterLevel_#t~ret26#1;havoc isHighWaterLevel_#t~ret26#1; {8006#true} is VALID [2022-02-21 04:16:27,103 INFO L290 TraceCheckUtils]: 16: Hoare triple {8006#true} assume !(0 != isHighWaterLevel_~tmp~4#1);isHighWaterLevel_~tmp___0~1#1 := 1; {8008#(not (= |ULTIMATE.start_isHighWaterLevel_~tmp___0~1#1| 0))} is VALID [2022-02-21 04:16:27,104 INFO L290 TraceCheckUtils]: 17: Hoare triple {8008#(not (= |ULTIMATE.start_isHighWaterLevel_~tmp___0~1#1| 0))} isHighWaterLevel_~retValue_acc~7#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~7#1; {8009#(not (= |ULTIMATE.start_isHighWaterLevel_#res#1| 0))} is VALID [2022-02-21 04:16:27,105 INFO L290 TraceCheckUtils]: 18: Hoare triple {8009#(not (= |ULTIMATE.start_isHighWaterLevel_#res#1| 0))} processEnvironment__wrappee__methaneQuery_#t~ret14#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__methaneQuery_~tmp~1#1 := processEnvironment__wrappee__methaneQuery_#t~ret14#1;havoc processEnvironment__wrappee__methaneQuery_#t~ret14#1; {8010#(not (= |ULTIMATE.start_processEnvironment__wrappee__methaneQuery_~tmp~1#1| 0))} is VALID [2022-02-21 04:16:27,105 INFO L290 TraceCheckUtils]: 19: Hoare triple {8010#(not (= |ULTIMATE.start_processEnvironment__wrappee__methaneQuery_~tmp~1#1| 0))} assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1#1);assume { :begin_inline_processEnvironment__wrappee__base } true; {8007#false} is VALID [2022-02-21 04:16:27,107 INFO L290 TraceCheckUtils]: 20: Hoare triple {8007#false} assume { :end_inline_processEnvironment__wrappee__base } true; {8007#false} is VALID [2022-02-21 04:16:27,107 INFO L290 TraceCheckUtils]: 21: Hoare triple {8007#false} assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; {8007#false} is VALID [2022-02-21 04:16:27,107 INFO L290 TraceCheckUtils]: 22: Hoare triple {8007#false} assume { :end_inline_processEnvironment } true; {8007#false} is VALID [2022-02-21 04:16:27,107 INFO L290 TraceCheckUtils]: 23: Hoare triple {8007#false} assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret27#1, __utac_acc__Specification2_spec__2_#t~ret28#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; {8007#false} is VALID [2022-02-21 04:16:27,107 INFO L290 TraceCheckUtils]: 24: Hoare triple {8007#false} __utac_acc__Specification2_spec__2_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret27#1;havoc __utac_acc__Specification2_spec__2_#t~ret27#1; {8007#false} is VALID [2022-02-21 04:16:27,109 INFO L290 TraceCheckUtils]: 25: Hoare triple {8007#false} assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; {8007#false} is VALID [2022-02-21 04:16:27,109 INFO L290 TraceCheckUtils]: 26: Hoare triple {8007#false} assume { :end_inline___utac_acc__Specification2_spec__2 } true; {8007#false} is VALID [2022-02-21 04:16:27,109 INFO L290 TraceCheckUtils]: 27: Hoare triple {8007#false} assume { :end_inline_timeShift } true; {8007#false} is VALID [2022-02-21 04:16:27,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-21 04:16:27,110 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-21 04:16:27,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278909850] [2022-02-21 04:16:27,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278909850] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-21 04:16:27,111 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-21 04:16:27,111 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-21 04:16:27,111 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51498357] [2022-02-21 04:16:27,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-21 04:16:27,112 INFO L808 eck$LassoCheckResult]: loop already infeasible [2022-02-21 04:16:27,112 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-21 04:16:27,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-21 04:16:27,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-21 04:16:27,113 INFO L87 Difference]: Start difference. First operand 493 states and 630 transitions. cyclomatic complexity: 140 Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:27,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:16:27,988 INFO L93 Difference]: Finished difference Result 1456 states and 1860 transitions. [2022-02-21 04:16:27,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-21 04:16:27,989 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:28,008 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 04:16:28,009 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1456 states and 1860 transitions. [2022-02-21 04:16:28,089 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 1060 [2022-02-21 04:16:28,166 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1456 states to 1456 states and 1860 transitions. [2022-02-21 04:16:28,167 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1456 [2022-02-21 04:16:28,168 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1456 [2022-02-21 04:16:28,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1456 states and 1860 transitions. [2022-02-21 04:16:28,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-02-21 04:16:28,170 INFO L681 BuchiCegarLoop]: Abstraction has 1456 states and 1860 transitions. [2022-02-21 04:16:28,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states and 1860 transitions. [2022-02-21 04:16:28,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 529. [2022-02-21 04:16:28,182 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-21 04:16:28,184 INFO L82 GeneralOperation]: Start isEquivalent. First operand 1456 states and 1860 transitions. Second operand has 529 states, 529 states have (on average 1.2589792060491494) internal successors, (666), 528 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:28,185 INFO L74 IsIncluded]: Start isIncluded. First operand 1456 states and 1860 transitions. Second operand has 529 states, 529 states have (on average 1.2589792060491494) internal successors, (666), 528 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:28,186 INFO L87 Difference]: Start difference. First operand 1456 states and 1860 transitions. Second operand has 529 states, 529 states have (on average 1.2589792060491494) internal successors, (666), 528 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:28,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:16:28,259 INFO L93 Difference]: Finished difference Result 1456 states and 1860 transitions. [2022-02-21 04:16:28,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 1860 transitions. [2022-02-21 04:16:28,261 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:16:28,261 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:16:28,263 INFO L74 IsIncluded]: Start isIncluded. First operand has 529 states, 529 states have (on average 1.2589792060491494) internal successors, (666), 528 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 1456 states and 1860 transitions. [2022-02-21 04:16:28,264 INFO L87 Difference]: Start difference. First operand has 529 states, 529 states have (on average 1.2589792060491494) internal successors, (666), 528 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 1456 states and 1860 transitions. [2022-02-21 04:16:28,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:16:28,340 INFO L93 Difference]: Finished difference Result 1456 states and 1860 transitions. [2022-02-21 04:16:28,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 1860 transitions. [2022-02-21 04:16:28,342 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:16:28,342 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:16:28,342 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-21 04:16:28,342 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-21 04:16:28,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 529 states have (on average 1.2589792060491494) internal successors, (666), 528 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:16:28,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 666 transitions. [2022-02-21 04:16:28,369 INFO L704 BuchiCegarLoop]: Abstraction has 529 states and 666 transitions. [2022-02-21 04:16:28,369 INFO L587 BuchiCegarLoop]: Abstraction has 529 states and 666 transitions. [2022-02-21 04:16:28,369 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2022-02-21 04:16:28,370 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 529 states and 666 transitions. [2022-02-21 04:16:28,372 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 371 [2022-02-21 04:16:28,372 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 04:16:28,372 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 04:16:28,373 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:16:28,373 INFO L843 BuchiCegarLoop]: Counterexample loop 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] [2022-02-21 04:16:28,373 INFO L791 eck$LassoCheckResult]: Stem: 9739#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 9559#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret52#1, main_~retValue_acc~11#1, main_~tmp~9#1;havoc main_~retValue_acc~11#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 9560#L176 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 9573#L169 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~4#1;havoc valid_product_~retValue_acc~4#1;valid_product_~retValue_acc~4#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~4#1; 9628#L184 main_#t~ret52#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret52#1;havoc main_#t~ret52#1; 9475#L983 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 9476#L959 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 9707#L492 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet10#1, test_#t~nondet11#1, test_#t~nondet12#1, test_#t~nondet13#1, test_~splverifierCounter~0#1, test_~tmp~0#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~0#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 9737#L203-2 [2022-02-21 04:16:28,373 INFO L793 eck$LassoCheckResult]: Loop: 9737#L203-2 assume !false; 9719#L204 assume test_~splverifierCounter~0#1 < 4; 9662#L205 test_~tmp~0#1 := test_#t~nondet10#1;havoc test_#t~nondet10#1; 9663#L213 assume !(0 != test_~tmp~0#1); 9496#L213-2 test_~tmp___0~0#1 := test_#t~nondet11#1;havoc test_#t~nondet11#1; 9497#L223 assume !(0 != test_~tmp___0~0#1); 9482#L223-2 test_~tmp___2~0#1 := test_#t~nondet12#1;havoc test_#t~nondet12#1; 9895#L233 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet13#1;havoc test_#t~nondet13#1; 9894#L241 assume !(0 != test_~tmp___1~0#1); 9530#L241-2 assume { :begin_inline_timeShift } true; 9683#L274 assume !(0 != ~pumpRunning~0); 9684#L274-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret15#1, processEnvironment_~tmp~2#1;havoc processEnvironment_~tmp~2#1; 9536#L332 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret14#1, processEnvironment__wrappee__methaneQuery_~tmp~1#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1#1; 9537#L306-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret26#1, isHighWaterLevel_~retValue_acc~7#1, isHighWaterLevel_~tmp~4#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~7#1;havoc isHighWaterLevel_~tmp~4#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 9574#L140-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 9576#L145-1 isHighWaterLevel_#t~ret26#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~4#1 := isHighWaterLevel_#t~ret26#1;havoc isHighWaterLevel_#t~ret26#1; 9817#L451-3 assume 0 != isHighWaterLevel_~tmp~4#1;isHighWaterLevel_~tmp___0~1#1 := 0; 9818#L451-5 isHighWaterLevel_~retValue_acc~7#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~7#1; 9813#L457-1 processEnvironment__wrappee__methaneQuery_#t~ret14#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__methaneQuery_~tmp~1#1 := processEnvironment__wrappee__methaneQuery_#t~ret14#1;havoc processEnvironment__wrappee__methaneQuery_#t~ret14#1; 9814#L310-3 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 9884#L298-2 assume { :end_inline_processEnvironment__wrappee__base } true; 9498#L306-3 assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; 9495#L332-1 assume { :end_inline_processEnvironment } true; 9695#L281-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret27#1, __utac_acc__Specification2_spec__2_#t~ret28#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 9696#L100-3 __utac_acc__Specification2_spec__2_#t~ret27#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret27#1;havoc __utac_acc__Specification2_spec__2_#t~ret27#1; 9651#L503 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; 9524#L503-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 9636#L291 assume { :end_inline_timeShift } true; 9737#L203-2 [2022-02-21 04:16:28,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:16:28,374 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 5 times [2022-02-21 04:16:28,374 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:16:28,374 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266891315] [2022-02-21 04:16:28,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:16:28,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:16:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:16:28,383 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:16:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:16:28,391 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:16:28,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:16:28,392 INFO L85 PathProgramCache]: Analyzing trace with hash 90792079, now seen corresponding path program 1 times [2022-02-21 04:16:28,392 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:16:28,392 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178039816] [2022-02-21 04:16:28,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:16:28,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:16:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:16:28,399 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:16:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:16:28,405 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:16:28,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:16:28,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1089862648, now seen corresponding path program 1 times [2022-02-21 04:16:28,406 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:16:28,406 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74475186] [2022-02-21 04:16:28,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:16:28,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:16:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:16:28,419 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:16:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:16:28,440 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:16:31,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.02 04:16:31 BoogieIcfgContainer [2022-02-21 04:16:31,819 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-02-21 04:16:31,820 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-21 04:16:31,820 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-21 04:16:31,820 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-21 04:16:31,821 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:16:24" (3/4) ... [2022-02-21 04:16:31,823 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-02-21 04:16:31,860 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-02-21 04:16:31,860 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-21 04:16:31,862 INFO L158 Benchmark]: Toolchain (without parser) took 8973.75ms. Allocated memory was 96.5MB in the beginning and 172.0MB in the end (delta: 75.5MB). Free memory was 65.8MB in the beginning and 122.3MB in the end (delta: -56.5MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2022-02-21 04:16:31,862 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 77.6MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 04:16:31,862 INFO L158 Benchmark]: CACSL2BoogieTranslator took 440.54ms. Allocated memory is still 96.5MB. Free memory was 65.7MB in the beginning and 43.9MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-02-21 04:16:31,862 INFO L158 Benchmark]: Boogie Procedure Inliner took 98.96ms. Allocated memory is still 96.5MB. Free memory was 43.9MB in the beginning and 39.1MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-02-21 04:16:31,863 INFO L158 Benchmark]: Boogie Preprocessor took 49.13ms. Allocated memory is still 96.5MB. Free memory was 39.1MB in the beginning and 73.1MB in the end (delta: -33.9MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2022-02-21 04:16:31,863 INFO L158 Benchmark]: RCFGBuilder took 662.53ms. Allocated memory is still 96.5MB. Free memory was 72.7MB in the beginning and 44.4MB in the end (delta: 28.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-02-21 04:16:31,863 INFO L158 Benchmark]: BuchiAutomizer took 7675.52ms. Allocated memory was 96.5MB in the beginning and 172.0MB in the end (delta: 75.5MB). Free memory was 44.1MB in the beginning and 125.4MB in the end (delta: -81.3MB). Peak memory consumption was 63.2MB. Max. memory is 16.1GB. [2022-02-21 04:16:31,864 INFO L158 Benchmark]: Witness Printer took 40.87ms. Allocated memory is still 172.0MB. Free memory was 124.4MB in the beginning and 122.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 04:16:31,865 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 77.6MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 440.54ms. Allocated memory is still 96.5MB. Free memory was 65.7MB in the beginning and 43.9MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 98.96ms. Allocated memory is still 96.5MB. Free memory was 43.9MB in the beginning and 39.1MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.13ms. Allocated memory is still 96.5MB. Free memory was 39.1MB in the beginning and 73.1MB in the end (delta: -33.9MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * RCFGBuilder took 662.53ms. Allocated memory is still 96.5MB. Free memory was 72.7MB in the beginning and 44.4MB in the end (delta: 28.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 7675.52ms. Allocated memory was 96.5MB in the beginning and 172.0MB in the end (delta: 75.5MB). Free memory was 44.1MB in the beginning and 125.4MB in the end (delta: -81.3MB). Peak memory consumption was 63.2MB. Max. memory is 16.1GB. * Witness Printer took 40.87ms. Allocated memory is still 172.0MB. Free memory was 124.4MB in the beginning and 122.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (4 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.4 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 529 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.5s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 4.1s. Construction of modules took 0.2s. Büchi inclusion checks took 2.1s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 1780 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.4s Buchi closure took 0.0s. Biggest automaton had 529 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1658 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1658 mSDsluCounter, 3063 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1747 mSDsCounter, 73 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 192 IncrementalHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73 mSolverCounterUnsat, 1316 mSDtfsCounter, 192 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 203]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {splverifierCounter=0, tmp=0, NULL=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a519738=0, head=0, pumpRunning=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@70482882=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4027d206=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@53e0423e=0, tmp___0=0, NULL=1, retValue_acc=1, methaneLevelCritical=0, tmp=0, \result=0, retValue_acc=0, retValue_acc=0, \result=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f3f704f=0, retValue_acc=1, tmp=1, tmp___2=0, tmp=1, methAndRunningLastTime=0, tmp=0, cleanupTimeShifts=4, \result=0, tmp=0, head=0, tmp___1=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@555fa8b=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3e3f8f1e=0, waterLevel=1, systemActive=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5e2952a0=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3aa3bea3=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@13f5a9de=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 203]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L266] int pumpRunning = 0; [L267] int systemActive = 1; [L486] int methAndRunningLastTime ; [L694] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L900] int cleanupTimeShifts = 4; [L974] int retValue_acc ; [L975] int tmp ; [L979] FCALL select_helpers() [L980] FCALL select_features() [L981] CALL, EXPR valid_product() [L180] int retValue_acc ; [L183] retValue_acc = 1 [L184] return (retValue_acc); [L981] RET, EXPR valid_product() [L981] tmp = valid_product() [L983] COND TRUE \read(tmp) [L985] FCALL setup() [L986] CALL runTest() [L967] CALL __utac_acc__Specification2_spec__1() [L491] methAndRunningLastTime = 0 [L967] RET __utac_acc__Specification2_spec__1() [L968] CALL test() [L194] int splverifierCounter ; [L195] int tmp ; [L196] int tmp___0 ; [L197] int tmp___1 ; [L198] int tmp___2 ; [L201] splverifierCounter = 0 Loop: [L203] COND TRUE 1 [L205] COND TRUE splverifierCounter < 4 [L211] tmp = __VERIFIER_nondet_int() [L213] COND FALSE !(\read(tmp)) [L221] tmp___0 = __VERIFIER_nondet_int() [L223] COND FALSE !(\read(tmp___0)) [L231] tmp___2 = __VERIFIER_nondet_int() [L233] COND FALSE !(\read(tmp___2)) [L239] tmp___1 = __VERIFIER_nondet_int() [L241] COND FALSE !(\read(tmp___1)) [L250] CALL timeShift() [L274] COND FALSE !(\read(pumpRunning)) [L281] COND TRUE \read(systemActive) [L283] CALL processEnvironment() [L329] int tmp ; [L332] COND FALSE !(\read(pumpRunning)) [L347] CALL processEnvironment__wrappee__methaneQuery() [L303] int tmp ; [L306] COND TRUE ! pumpRunning [L308] CALL, EXPR isHighWaterLevel() [L443] int retValue_acc ; [L444] int tmp ; [L445] int tmp___0 ; [L449] CALL, EXPR isHighWaterSensorDry() [L137] int retValue_acc ; [L140] COND TRUE waterLevel < 2 [L141] retValue_acc = 1 [L142] return (retValue_acc); [L449] RET, EXPR isHighWaterSensorDry() [L449] tmp = isHighWaterSensorDry() [L451] COND TRUE \read(tmp) [L452] tmp___0 = 0 [L456] retValue_acc = tmp___0 [L457] return (retValue_acc); [L308] RET, EXPR isHighWaterLevel() [L308] tmp = isHighWaterLevel() [L310] COND FALSE !(\read(tmp)) [L316] FCALL processEnvironment__wrappee__base() [L347] RET processEnvironment__wrappee__methaneQuery() [L283] RET processEnvironment() [L289] CALL __utac_acc__Specification2_spec__2() [L496] int tmp ; [L497] int tmp___0 ; [L501] CALL, EXPR isMethaneLevelCritical() [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); [L501] RET, EXPR isMethaneLevelCritical() [L501] tmp = isMethaneLevelCritical() [L503] COND FALSE !(\read(tmp)) [L519] methAndRunningLastTime = 0 [L289] RET __utac_acc__Specification2_spec__2() [L250] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-02-21 04:16:31,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)