./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product51.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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_product51.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 242c9b24ea8c293cca4af0028144a97f9048375edcd4379fb21e62564563d3d5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 04:17:35,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 04:17:35,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 04:17:35,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 04:17:35,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 04:17:35,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 04:17:35,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 04:17:35,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 04:17:35,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 04:17:35,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 04:17:35,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 04:17:35,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 04:17:35,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 04:17:35,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 04:17:35,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 04:17:35,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 04:17:35,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 04:17:35,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 04:17:35,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 04:17:35,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 04:17:35,542 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 04:17:35,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 04:17:35,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 04:17:35,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 04:17:35,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 04:17:35,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 04:17:35,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 04:17:35,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 04:17:35,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 04:17:35,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 04:17:35,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 04:17:35,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 04:17:35,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 04:17:35,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 04:17:35,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 04:17:35,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 04:17:35,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 04:17:35,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 04:17:35,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 04:17:35,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 04:17:35,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 04:17:35,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 04:17:35,566 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-13 04:17:35,598 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 04:17:35,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 04:17:35,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 04:17:35,599 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 04:17:35,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 04:17:35,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 04:17:35,601 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 04:17:35,601 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-13 04:17:35,601 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-13 04:17:35,602 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-13 04:17:35,602 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-13 04:17:35,603 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-13 04:17:35,603 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-13 04:17:35,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 04:17:35,603 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 04:17:35,603 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 04:17:35,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 04:17:35,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 04:17:35,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 04:17:35,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-13 04:17:35,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-13 04:17:35,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-13 04:17:35,606 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 04:17:35,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 04:17:35,606 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-13 04:17:35,606 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 04:17:35,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-13 04:17:35,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 04:17:35,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 04:17:35,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 04:17:35,608 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 04:17:35,608 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-13 04:17:35,609 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 242c9b24ea8c293cca4af0028144a97f9048375edcd4379fb21e62564563d3d5 [2022-07-13 04:17:35,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 04:17:35,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 04:17:35,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 04:17:35,865 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 04:17:35,866 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 04:17:35,867 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product51.cil.c [2022-07-13 04:17:35,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcffc1564/e77a3c211534435c9a7c8d3a1728bfa8/FLAG3b60440ae [2022-07-13 04:17:36,367 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 04:17:36,368 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product51.cil.c [2022-07-13 04:17:36,381 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcffc1564/e77a3c211534435c9a7c8d3a1728bfa8/FLAG3b60440ae [2022-07-13 04:17:36,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcffc1564/e77a3c211534435c9a7c8d3a1728bfa8 [2022-07-13 04:17:36,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 04:17:36,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 04:17:36,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 04:17:36,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 04:17:36,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 04:17:36,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 04:17:36" (1/1) ... [2022-07-13 04:17:36,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19d25797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:17:36, skipping insertion in model container [2022-07-13 04:17:36,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 04:17:36" (1/1) ... [2022-07-13 04:17:36,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 04:17:36,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 04:17:37,200 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_product51.cil.c[9329,9342] [2022-07-13 04:17:37,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 04:17:37,284 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 04:17:37,316 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_product51.cil.c[9329,9342] [2022-07-13 04:17:37,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 04:17:37,367 INFO L208 MainTranslator]: Completed translation [2022-07-13 04:17:37,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:17:37 WrapperNode [2022-07-13 04:17:37,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 04:17:37,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 04:17:37,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 04:17:37,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 04:17:37,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:17:37" (1/1) ... [2022-07-13 04:17:37,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:17:37" (1/1) ... [2022-07-13 04:17:37,429 INFO L137 Inliner]: procedures = 57, calls = 157, calls flagged for inlining = 54, calls inlined = 80, statements flattened = 622 [2022-07-13 04:17:37,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 04:17:37,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 04:17:37,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 04:17:37,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 04:17:37,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:17:37" (1/1) ... [2022-07-13 04:17:37,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:17:37" (1/1) ... [2022-07-13 04:17:37,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:17:37" (1/1) ... [2022-07-13 04:17:37,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:17:37" (1/1) ... [2022-07-13 04:17:37,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:17:37" (1/1) ... [2022-07-13 04:17:37,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:17:37" (1/1) ... [2022-07-13 04:17:37,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:17:37" (1/1) ... [2022-07-13 04:17:37,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 04:17:37,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 04:17:37,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 04:17:37,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 04:17:37,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:17:37" (1/1) ... [2022-07-13 04:17:37,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:17:37,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:17:37,510 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) [2022-07-13 04:17:37,516 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 [2022-07-13 04:17:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 04:17:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 04:17:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 04:17:37,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 04:17:37,631 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 04:17:37,633 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 04:17:38,067 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 04:17:38,075 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 04:17:38,075 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 04:17:38,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 04:17:38 BoogieIcfgContainer [2022-07-13 04:17:38,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 04:17:38,078 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-13 04:17:38,079 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-13 04:17:38,082 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-13 04:17:38,082 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 04:17:38,083 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.07 04:17:36" (1/3) ... [2022-07-13 04:17:38,083 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@188a0b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 04:17:38, skipping insertion in model container [2022-07-13 04:17:38,083 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 04:17:38,083 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:17:37" (2/3) ... [2022-07-13 04:17:38,084 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@188a0b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 04:17:38, skipping insertion in model container [2022-07-13 04:17:38,084 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 04:17:38,084 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 04:17:38" (3/3) ... [2022-07-13 04:17:38,085 INFO L354 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product51.cil.c [2022-07-13 04:17:38,134 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-13 04:17:38,135 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-13 04:17:38,135 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-13 04:17:38,135 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-13 04:17:38,135 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-13 04:17:38,135 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-13 04:17:38,135 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-13 04:17:38,135 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-13 04:17:38,140 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 170 states, 169 states have (on average 1.3846153846153846) internal successors, (234), 169 states have internal predecessors, (234), 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) [2022-07-13 04:17:38,164 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 110 [2022-07-13 04:17:38,165 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:17:38,165 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:17:38,172 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:17:38,172 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:17:38,172 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-13 04:17:38,173 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 170 states, 169 states have (on average 1.3846153846153846) internal successors, (234), 169 states have internal predecessors, (234), 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) [2022-07-13 04:17:38,183 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 110 [2022-07-13 04:17:38,183 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:17:38,184 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:17:38,188 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:17:38,189 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:17:38,193 INFO L752 eck$LassoCheckResult]: Stem: 157#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(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 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);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 56#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~10#1, main_~tmp~6#1;havoc main_~retValue_acc~10#1;havoc main_~tmp~6#1;assume { :begin_inline_select_helpers } true; 161#L409true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 113#L402true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~5#1;havoc valid_product_~retValue_acc~5#1;valid_product_~retValue_acc~5#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~5#1; 55#L417true main_#t~ret29#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~6#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 99#L609true assume 0 != main_~tmp~6#1;assume { :begin_inline_setup } true; 98#L585true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 87#L351true assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet4#1, test_#t~nondet5#1, test_#t~nondet6#1, test_#t~nondet7#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; 51#L65-2true [2022-07-13 04:17:38,194 INFO L754 eck$LassoCheckResult]: Loop: 51#L65-2true assume !false; 45#L66true assume test_~splverifierCounter~0#1 < 4; 156#L67true test_~tmp~0#1 := test_#t~nondet4#1;havoc test_#t~nondet4#1; 81#L75true assume !(0 != test_~tmp~0#1); 154#L75-2true test_~tmp___0~0#1 := test_#t~nondet5#1;havoc test_#t~nondet5#1; 47#L85true assume !(0 != test_~tmp___0~0#1); 7#L85-2true test_~tmp___2~0#1 := test_#t~nondet6#1;havoc test_#t~nondet6#1; 117#L95true assume 0 != test_~tmp___2~0#1; 110#L101-2true assume { :begin_inline_timeShift } true; 42#L139true assume !(0 != ~pumpRunning~0); 27#L139-2true assume !(0 != ~systemActive~0); 30#L146-1true assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret21#1, __utac_acc__Specification2_spec__2_#t~ret22#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~3#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~3#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; 167#L466true __utac_acc__Specification2_spec__2_#t~ret21#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret21#1;havoc __utac_acc__Specification2_spec__2_#t~ret21#1; 164#L362true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; 36#L362-1true assume { :end_inline___utac_acc__Specification2_spec__2 } true; 165#L156true assume { :end_inline_timeShift } true; 51#L65-2true [2022-07-13 04:17:38,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:17:38,200 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 1 times [2022-07-13 04:17:38,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:17:38,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959529987] [2022-07-13 04:17:38,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:17:38,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:17:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:17:38,361 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:17:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:17:38,436 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:17:38,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:17:38,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1250870358, now seen corresponding path program 1 times [2022-07-13 04:17:38,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:17:38,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344924227] [2022-07-13 04:17:38,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:17:38,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:17:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:17:38,471 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:17:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:17:38,480 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:17:38,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:17:38,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1413157741, now seen corresponding path program 1 times [2022-07-13 04:17:38,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:17:38,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671660063] [2022-07-13 04:17:38,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:17:38,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:17:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:17:38,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:17:38,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:17:38,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671660063] [2022-07-13 04:17:38,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671660063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 04:17:38,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 04:17:38,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 04:17:38,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630027706] [2022-07-13 04:17:38,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 04:17:38,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 04:17:38,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 04:17:38,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 04:17:38,800 INFO L87 Difference]: Start difference. First operand has 170 states, 169 states have (on average 1.3846153846153846) internal successors, (234), 169 states have internal predecessors, (234), 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 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2022-07-13 04:17:38,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 04:17:38,945 INFO L93 Difference]: Finished difference Result 393 states and 522 transitions. [2022-07-13 04:17:38,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 04:17:38,956 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 393 states and 522 transitions. [2022-07-13 04:17:38,968 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 253 [2022-07-13 04:17:38,974 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 393 states to 363 states and 492 transitions. [2022-07-13 04:17:38,975 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 363 [2022-07-13 04:17:38,979 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 363 [2022-07-13 04:17:38,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 363 states and 492 transitions. [2022-07-13 04:17:38,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 04:17:38,985 INFO L369 hiAutomatonCegarLoop]: Abstraction has 363 states and 492 transitions. [2022-07-13 04:17:39,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states and 492 transitions. [2022-07-13 04:17:39,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 212. [2022-07-13 04:17:39,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 212 states have (on average 1.3537735849056605) internal successors, (287), 211 states have internal predecessors, (287), 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) [2022-07-13 04:17:39,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 287 transitions. [2022-07-13 04:17:39,034 INFO L392 hiAutomatonCegarLoop]: Abstraction has 212 states and 287 transitions. [2022-07-13 04:17:39,034 INFO L374 stractBuchiCegarLoop]: Abstraction has 212 states and 287 transitions. [2022-07-13 04:17:39,034 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-13 04:17:39,035 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 212 states and 287 transitions. [2022-07-13 04:17:39,037 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 148 [2022-07-13 04:17:39,037 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:17:39,037 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:17:39,039 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:17:39,039 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:17:39,039 INFO L752 eck$LassoCheckResult]: Stem: 735#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(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 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);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 669#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~10#1, main_~tmp~6#1;havoc main_~retValue_acc~10#1;havoc main_~tmp~6#1;assume { :begin_inline_select_helpers } true; 670#L409 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 718#L402 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~5#1;havoc valid_product_~retValue_acc~5#1;valid_product_~retValue_acc~5#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~5#1; 667#L417 main_#t~ret29#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~6#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 668#L609 assume 0 != main_~tmp~6#1;assume { :begin_inline_setup } true; 703#L585 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 692#L351 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet4#1, test_#t~nondet5#1, test_#t~nondet6#1, test_#t~nondet7#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; 666#L65-2 [2022-07-13 04:17:39,040 INFO L754 eck$LassoCheckResult]: Loop: 666#L65-2 assume !false; 652#L66 assume test_~splverifierCounter~0#1 < 4; 653#L67 test_~tmp~0#1 := test_#t~nondet4#1;havoc test_#t~nondet4#1; 686#L75 assume !(0 != test_~tmp~0#1); 687#L75-2 test_~tmp___0~0#1 := test_#t~nondet5#1;havoc test_#t~nondet5#1; 656#L85 assume !(0 != test_~tmp___0~0#1); 589#L85-2 test_~tmp___2~0#1 := test_#t~nondet6#1;havoc test_#t~nondet6#1; 590#L95 assume 0 != test_~tmp___2~0#1; 716#L101-2 assume { :begin_inline_timeShift } true; 647#L139 assume !(0 != ~pumpRunning~0); 624#L139-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret9#1, processEnvironment_~tmp~2#1;havoc processEnvironment_~tmp~2#1; 625#L197 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret8#1, processEnvironment__wrappee__highWaterSensor_~tmp~1#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1#1; 698#L171-2 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 707#L163-3 assume { :end_inline_processEnvironment__wrappee__base } true; 596#L171-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 610#L197-1 assume { :end_inline_processEnvironment } true; 611#L146-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret21#1, __utac_acc__Specification2_spec__2_#t~ret22#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~3#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~3#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; 629#L466 __utac_acc__Specification2_spec__2_#t~ret21#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret21#1;havoc __utac_acc__Specification2_spec__2_#t~ret21#1; 737#L362 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; 617#L362-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 640#L156 assume { :end_inline_timeShift } true; 666#L65-2 [2022-07-13 04:17:39,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:17:39,040 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 2 times [2022-07-13 04:17:39,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:17:39,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688859224] [2022-07-13 04:17:39,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:17:39,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:17:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:17:39,083 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:17:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:17:39,096 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:17:39,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:17:39,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1497844822, now seen corresponding path program 1 times [2022-07-13 04:17:39,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:17:39,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241570356] [2022-07-13 04:17:39,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:17:39,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:17:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:17:39,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:17:39,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:17:39,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241570356] [2022-07-13 04:17:39,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241570356] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 04:17:39,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 04:17:39,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 04:17:39,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754759066] [2022-07-13 04:17:39,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 04:17:39,113 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-13 04:17:39,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 04:17:39,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 04:17:39,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 04:17:39,115 INFO L87 Difference]: Start difference. First operand 212 states and 287 transitions. cyclomatic complexity: 78 Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2022-07-13 04:17:39,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 04:17:39,186 INFO L93 Difference]: Finished difference Result 265 states and 344 transitions. [2022-07-13 04:17:39,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 04:17:39,191 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 265 states and 344 transitions. [2022-07-13 04:17:39,195 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 189 [2022-07-13 04:17:39,199 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 265 states to 265 states and 344 transitions. [2022-07-13 04:17:39,199 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 265 [2022-07-13 04:17:39,200 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 265 [2022-07-13 04:17:39,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 265 states and 344 transitions. [2022-07-13 04:17:39,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 04:17:39,203 INFO L369 hiAutomatonCegarLoop]: Abstraction has 265 states and 344 transitions. [2022-07-13 04:17:39,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states and 344 transitions. [2022-07-13 04:17:39,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2022-07-13 04:17:39,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 265 states have (on average 1.2981132075471697) internal successors, (344), 264 states have internal predecessors, (344), 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) [2022-07-13 04:17:39,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 344 transitions. [2022-07-13 04:17:39,220 INFO L392 hiAutomatonCegarLoop]: Abstraction has 265 states and 344 transitions. [2022-07-13 04:17:39,220 INFO L374 stractBuchiCegarLoop]: Abstraction has 265 states and 344 transitions. [2022-07-13 04:17:39,220 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-13 04:17:39,220 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 265 states and 344 transitions. [2022-07-13 04:17:39,229 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 189 [2022-07-13 04:17:39,229 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:17:39,229 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:17:39,231 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:17:39,231 INFO L180 hiAutomatonCegarLoop]: 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] [2022-07-13 04:17:39,231 INFO L752 eck$LassoCheckResult]: Stem: 1232#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(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 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);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1155#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~10#1, main_~tmp~6#1;havoc main_~retValue_acc~10#1;havoc main_~tmp~6#1;assume { :begin_inline_select_helpers } true; 1156#L409 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1209#L402 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~5#1;havoc valid_product_~retValue_acc~5#1;valid_product_~retValue_acc~5#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~5#1; 1153#L417 main_#t~ret29#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~6#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 1154#L609 assume 0 != main_~tmp~6#1;assume { :begin_inline_setup } true; 1193#L585 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 1182#L351 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet4#1, test_#t~nondet5#1, test_#t~nondet6#1, test_#t~nondet7#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; 1148#L65-2 [2022-07-13 04:17:39,232 INFO L754 eck$LassoCheckResult]: Loop: 1148#L65-2 assume !false; 1137#L66 assume test_~splverifierCounter~0#1 < 4; 1138#L67 test_~tmp~0#1 := test_#t~nondet4#1;havoc test_#t~nondet4#1; 1308#L75 assume !(0 != test_~tmp~0#1); 1306#L75-2 test_~tmp___0~0#1 := test_#t~nondet5#1;havoc test_#t~nondet5#1; 1142#L85 assume !(0 != test_~tmp___0~0#1); 1093#L85-2 test_~tmp___2~0#1 := test_#t~nondet6#1;havoc test_#t~nondet6#1; 1304#L95 assume 0 != test_~tmp___2~0#1; 1204#L101-2 assume { :begin_inline_timeShift } true; 1205#L139 assume !(0 != ~pumpRunning~0); 1108#L139-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret9#1, processEnvironment_~tmp~2#1;havoc processEnvironment_~tmp~2#1; 1109#L197 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret8#1, processEnvironment__wrappee__highWaterSensor_~tmp~1#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1#1; 1188#L171-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret19#1, isHighWaterLevel_~retValue_acc~2#1, isHighWaterLevel_~tmp~3#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~2#1;havoc isHighWaterLevel_~tmp~3#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~8#1;havoc isHighWaterSensorDry_~retValue_acc~8#1; 1186#L506-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~8#1; 1180#L511-1 isHighWaterLevel_#t~ret19#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~3#1 := isHighWaterLevel_#t~ret19#1;havoc isHighWaterLevel_#t~ret19#1; 1181#L299-3 assume !(0 != isHighWaterLevel_~tmp~3#1);isHighWaterLevel_~tmp___0~1#1 := 1; 1131#L299-5 isHighWaterLevel_~retValue_acc~2#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~2#1; 1121#L305-1 processEnvironment__wrappee__highWaterSensor_#t~ret8#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~1#1 := processEnvironment__wrappee__highWaterSensor_#t~ret8#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret8#1; 1122#L175-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1162#L163-2 assume { :end_inline_processEnvironment__wrappee__base } true; 1163#L171-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 1094#L197-1 assume { :end_inline_processEnvironment } true; 1095#L146-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret21#1, __utac_acc__Specification2_spec__2_#t~ret22#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~3#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~3#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; 1303#L466 __utac_acc__Specification2_spec__2_#t~ret21#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret21#1;havoc __utac_acc__Specification2_spec__2_#t~ret21#1; 1301#L362 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; 1298#L362-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 1297#L156 assume { :end_inline_timeShift } true; 1148#L65-2 [2022-07-13 04:17:39,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:17:39,233 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 3 times [2022-07-13 04:17:39,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:17:39,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52588717] [2022-07-13 04:17:39,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:17:39,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:17:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:17:39,257 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:17:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:17:39,276 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:17:39,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:17:39,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1757303124, now seen corresponding path program 1 times [2022-07-13 04:17:39,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:17:39,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701403712] [2022-07-13 04:17:39,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:17:39,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:17:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:17:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:17:39,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:17:39,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701403712] [2022-07-13 04:17:39,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701403712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 04:17:39,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 04:17:39,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 04:17:39,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306711898] [2022-07-13 04:17:39,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 04:17:39,311 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-13 04:17:39,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 04:17:39,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 04:17:39,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 04:17:39,312 INFO L87 Difference]: Start difference. First operand 265 states and 344 transitions. cyclomatic complexity: 82 Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2022-07-13 04:17:39,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 04:17:39,379 INFO L93 Difference]: Finished difference Result 516 states and 662 transitions. [2022-07-13 04:17:39,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 04:17:39,380 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 516 states and 662 transitions. [2022-07-13 04:17:39,383 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 374 [2022-07-13 04:17:39,386 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 516 states to 516 states and 662 transitions. [2022-07-13 04:17:39,386 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 516 [2022-07-13 04:17:39,387 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 516 [2022-07-13 04:17:39,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 516 states and 662 transitions. [2022-07-13 04:17:39,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 04:17:39,387 INFO L369 hiAutomatonCegarLoop]: Abstraction has 516 states and 662 transitions. [2022-07-13 04:17:39,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states and 662 transitions. [2022-07-13 04:17:39,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 277. [2022-07-13 04:17:39,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 277 states have (on average 1.2851985559566788) internal successors, (356), 276 states have internal predecessors, (356), 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) [2022-07-13 04:17:39,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 356 transitions. [2022-07-13 04:17:39,394 INFO L392 hiAutomatonCegarLoop]: Abstraction has 277 states and 356 transitions. [2022-07-13 04:17:39,394 INFO L374 stractBuchiCegarLoop]: Abstraction has 277 states and 356 transitions. [2022-07-13 04:17:39,394 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-13 04:17:39,394 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 277 states and 356 transitions. [2022-07-13 04:17:39,396 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 197 [2022-07-13 04:17:39,396 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:17:39,396 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:17:39,396 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:17:39,396 INFO L180 hiAutomatonCegarLoop]: 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] [2022-07-13 04:17:39,397 INFO L752 eck$LassoCheckResult]: Stem: 2030#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(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 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);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1947#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~10#1, main_~tmp~6#1;havoc main_~retValue_acc~10#1;havoc main_~tmp~6#1;assume { :begin_inline_select_helpers } true; 1948#L409 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2001#L402 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~5#1;havoc valid_product_~retValue_acc~5#1;valid_product_~retValue_acc~5#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~5#1; 1945#L417 main_#t~ret29#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~6#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 1946#L609 assume 0 != main_~tmp~6#1;assume { :begin_inline_setup } true; 1986#L585 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 1974#L351 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet4#1, test_#t~nondet5#1, test_#t~nondet6#1, test_#t~nondet7#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; 1975#L65-2 [2022-07-13 04:17:39,397 INFO L754 eck$LassoCheckResult]: Loop: 1975#L65-2 assume !false; 2096#L66 assume test_~splverifierCounter~0#1 < 4; 2097#L67 test_~tmp~0#1 := test_#t~nondet4#1;havoc test_#t~nondet4#1; 2131#L75 assume !(0 != test_~tmp~0#1); 2130#L75-2 test_~tmp___0~0#1 := test_#t~nondet5#1;havoc test_#t~nondet5#1; 2128#L85 assume !(0 != test_~tmp___0~0#1); 2126#L85-2 test_~tmp___2~0#1 := test_#t~nondet6#1;havoc test_#t~nondet6#1; 2124#L95 assume 0 != test_~tmp___2~0#1; 1997#L101-2 assume { :begin_inline_timeShift } true; 1924#L139 assume !(0 != ~pumpRunning~0); 1899#L139-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret9#1, processEnvironment_~tmp~2#1;havoc processEnvironment_~tmp~2#1; 1900#L197 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret8#1, processEnvironment__wrappee__highWaterSensor_~tmp~1#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1#1; 1982#L171-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret19#1, isHighWaterLevel_~retValue_acc~2#1, isHighWaterLevel_~tmp~3#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~2#1;havoc isHighWaterLevel_~tmp~3#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~8#1;havoc isHighWaterSensorDry_~retValue_acc~8#1; 1979#L506-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~8#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~8#1; 1972#L511-1 isHighWaterLevel_#t~ret19#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~3#1 := isHighWaterLevel_#t~ret19#1;havoc isHighWaterLevel_#t~ret19#1; 1973#L299-3 assume !(0 != isHighWaterLevel_~tmp~3#1);isHighWaterLevel_~tmp___0~1#1 := 1; 1923#L299-5 isHighWaterLevel_~retValue_acc~2#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~2#1; 1912#L305-1 processEnvironment__wrappee__highWaterSensor_#t~ret8#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~1#1 := processEnvironment__wrappee__highWaterSensor_#t~ret8#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret8#1; 1913#L175-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1953#L163-2 assume { :end_inline_processEnvironment__wrappee__base } true; 1954#L171-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 1884#L197-1 assume { :end_inline_processEnvironment } true; 1885#L146-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret21#1, __utac_acc__Specification2_spec__2_#t~ret22#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~3#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~3#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; 2104#L466 __utac_acc__Specification2_spec__2_#t~ret21#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret21#1;havoc __utac_acc__Specification2_spec__2_#t~ret21#1; 2102#L362 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; 2099#L362-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 2098#L156 assume { :end_inline_timeShift } true; 1975#L65-2 [2022-07-13 04:17:39,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:17:39,398 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 4 times [2022-07-13 04:17:39,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:17:39,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70844445] [2022-07-13 04:17:39,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:17:39,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:17:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:17:39,406 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:17:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:17:39,414 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:17:39,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:17:39,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1526546922, now seen corresponding path program 1 times [2022-07-13 04:17:39,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:17:39,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545521945] [2022-07-13 04:17:39,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:17:39,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:17:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:17:39,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:17:39,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:17:39,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545521945] [2022-07-13 04:17:39,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545521945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 04:17:39,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 04:17:39,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 04:17:39,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397179727] [2022-07-13 04:17:39,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 04:17:39,444 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-13 04:17:39,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 04:17:39,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 04:17:39,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 04:17:39,445 INFO L87 Difference]: Start difference. First operand 277 states and 356 transitions. cyclomatic complexity: 82 Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-07-13 04:17:39,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 04:17:39,559 INFO L93 Difference]: Finished difference Result 886 states and 1142 transitions. [2022-07-13 04:17:39,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 04:17:39,560 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 886 states and 1142 transitions. [2022-07-13 04:17:39,565 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 656 [2022-07-13 04:17:39,570 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 886 states to 886 states and 1142 transitions. [2022-07-13 04:17:39,570 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 886 [2022-07-13 04:17:39,571 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 886 [2022-07-13 04:17:39,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 886 states and 1142 transitions. [2022-07-13 04:17:39,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 04:17:39,573 INFO L369 hiAutomatonCegarLoop]: Abstraction has 886 states and 1142 transitions. [2022-07-13 04:17:39,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states and 1142 transitions. [2022-07-13 04:17:39,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 295. [2022-07-13 04:17:39,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 295 states have (on average 1.2677966101694915) internal successors, (374), 294 states have internal predecessors, (374), 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) [2022-07-13 04:17:39,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 374 transitions. [2022-07-13 04:17:39,580 INFO L392 hiAutomatonCegarLoop]: Abstraction has 295 states and 374 transitions. [2022-07-13 04:17:39,581 INFO L374 stractBuchiCegarLoop]: Abstraction has 295 states and 374 transitions. [2022-07-13 04:17:39,581 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-13 04:17:39,581 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 295 states and 374 transitions. [2022-07-13 04:17:39,582 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 209 [2022-07-13 04:17:39,582 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:17:39,583 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:17:39,583 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:17:39,583 INFO L180 hiAutomatonCegarLoop]: 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] [2022-07-13 04:17:39,583 INFO L752 eck$LassoCheckResult]: Stem: 3215#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(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 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);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 3122#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~10#1, main_~tmp~6#1;havoc main_~retValue_acc~10#1;havoc main_~tmp~6#1;assume { :begin_inline_select_helpers } true; 3123#L409 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 3181#L402 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~5#1;havoc valid_product_~retValue_acc~5#1;valid_product_~retValue_acc~5#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~5#1; 3120#L417 main_#t~ret29#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~6#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 3121#L609 assume 0 != main_~tmp~6#1;assume { :begin_inline_setup } true; 3163#L585 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 3149#L351 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet4#1, test_#t~nondet5#1, test_#t~nondet6#1, test_#t~nondet7#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; 3113#L65-2 [2022-07-13 04:17:39,584 INFO L754 eck$LassoCheckResult]: Loop: 3113#L65-2 assume !false; 3114#L66 assume test_~splverifierCounter~0#1 < 4; 3214#L67 test_~tmp~0#1 := test_#t~nondet4#1;havoc test_#t~nondet4#1; 3142#L75 assume !(0 != test_~tmp~0#1); 3143#L75-2 test_~tmp___0~0#1 := test_#t~nondet5#1;havoc test_#t~nondet5#1; 3106#L85 assume !(0 != test_~tmp___0~0#1); 3040#L85-2 test_~tmp___2~0#1 := test_#t~nondet6#1;havoc test_#t~nondet6#1; 3041#L95 assume 0 != test_~tmp___2~0#1; 3184#L101-2 assume { :begin_inline_timeShift } true; 3098#L139 assume !(0 != ~pumpRunning~0); 3074#L139-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret9#1, processEnvironment_~tmp~2#1;havoc processEnvironment_~tmp~2#1; 3075#L197 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret8#1, processEnvironment__wrappee__highWaterSensor_~tmp~1#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1#1; 3157#L171-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret19#1, isHighWaterLevel_~retValue_acc~2#1, isHighWaterLevel_~tmp~3#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~2#1;havoc isHighWaterLevel_~tmp~3#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~8#1;havoc isHighWaterSensorDry_~retValue_acc~8#1; 3154#L506-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~8#1; 3155#L511-1 isHighWaterLevel_#t~ret19#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~3#1 := isHighWaterLevel_#t~ret19#1;havoc isHighWaterLevel_#t~ret19#1; 3195#L299-3 assume 0 != isHighWaterLevel_~tmp~3#1;isHighWaterLevel_~tmp___0~1#1 := 0; 3196#L299-5 isHighWaterLevel_~retValue_acc~2#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~2#1; 3233#L305-1 processEnvironment__wrappee__highWaterSensor_#t~ret8#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~1#1 := processEnvironment__wrappee__highWaterSensor_#t~ret8#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret8#1; 3232#L175-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 3126#L163-2 assume { :end_inline_processEnvironment__wrappee__base } true; 3127#L171-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 3059#L197-1 assume { :end_inline_processEnvironment } true; 3060#L146-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret21#1, __utac_acc__Specification2_spec__2_#t~ret22#1, __utac_acc__Specification2_spec__2_~tmp~5#1, __utac_acc__Specification2_spec__2_~tmp___0~3#1;havoc __utac_acc__Specification2_spec__2_~tmp~5#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~3#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; 3296#L466 __utac_acc__Specification2_spec__2_#t~ret21#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~5#1 := __utac_acc__Specification2_spec__2_#t~ret21#1;havoc __utac_acc__Specification2_spec__2_#t~ret21#1; 3221#L362 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5#1);~methAndRunningLastTime~0 := 0; 3067#L362-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 3091#L156 assume { :end_inline_timeShift } true; 3113#L65-2 [2022-07-13 04:17:39,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:17:39,584 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 5 times [2022-07-13 04:17:39,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:17:39,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930175836] [2022-07-13 04:17:39,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:17:39,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:17:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:17:39,592 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:17:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:17:39,608 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:17:39,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:17:39,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2015468562, now seen corresponding path program 1 times [2022-07-13 04:17:39,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:17:39,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702526419] [2022-07-13 04:17:39,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:17:39,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:17:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:17:39,615 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:17:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:17:39,620 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:17:39,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:17:39,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1844693147, now seen corresponding path program 1 times [2022-07-13 04:17:39,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:17:39,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922561997] [2022-07-13 04:17:39,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:17:39,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:17:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:17:39,631 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:17:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:17:39,644 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:17:42,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.07 04:17:42 BoogieIcfgContainer [2022-07-13 04:17:42,524 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-13 04:17:42,524 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 04:17:42,524 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 04:17:42,525 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 04:17:42,525 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 04:17:38" (3/4) ... [2022-07-13 04:17:42,528 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-07-13 04:17:42,567 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 04:17:42,567 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 04:17:42,568 INFO L158 Benchmark]: Toolchain (without parser) took 5670.27ms. Allocated memory was 86.0MB in the beginning and 136.3MB in the end (delta: 50.3MB). Free memory was 52.1MB in the beginning and 36.8MB in the end (delta: 15.2MB). Peak memory consumption was 65.5MB. Max. memory is 16.1GB. [2022-07-13 04:17:42,568 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 86.0MB. Free memory was 40.6MB in the beginning and 40.6MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 04:17:42,569 INFO L158 Benchmark]: CACSL2BoogieTranslator took 466.57ms. Allocated memory is still 86.0MB. Free memory was 51.8MB in the beginning and 52.0MB in the end (delta: -162.7kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-13 04:17:42,569 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.63ms. Allocated memory is still 86.0MB. Free memory was 52.0MB in the beginning and 48.5MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 04:17:42,569 INFO L158 Benchmark]: Boogie Preprocessor took 43.85ms. Allocated memory is still 86.0MB. Free memory was 48.5MB in the beginning and 46.1MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 04:17:42,570 INFO L158 Benchmark]: RCFGBuilder took 602.39ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 46.1MB in the beginning and 72.8MB in the end (delta: -26.7MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2022-07-13 04:17:42,570 INFO L158 Benchmark]: BuchiAutomizer took 4445.42ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 72.8MB in the beginning and 39.9MB in the end (delta: 32.9MB). Peak memory consumption was 61.6MB. Max. memory is 16.1GB. [2022-07-13 04:17:42,571 INFO L158 Benchmark]: Witness Printer took 43.14ms. Allocated memory is still 136.3MB. Free memory was 39.9MB in the beginning and 36.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 04:17:42,572 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 86.0MB. Free memory was 40.6MB in the beginning and 40.6MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 466.57ms. Allocated memory is still 86.0MB. Free memory was 51.8MB in the beginning and 52.0MB in the end (delta: -162.7kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.63ms. Allocated memory is still 86.0MB. Free memory was 52.0MB in the beginning and 48.5MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.85ms. Allocated memory is still 86.0MB. Free memory was 48.5MB in the beginning and 46.1MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 602.39ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 46.1MB in the beginning and 72.8MB in the end (delta: -26.7MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * BuchiAutomizer took 4445.42ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 72.8MB in the beginning and 39.9MB in the end (delta: 32.9MB). Peak memory consumption was 61.6MB. Max. memory is 16.1GB. * Witness Printer took 43.14ms. Allocated memory is still 136.3MB. Free memory was 39.9MB in the beginning and 36.8MB in the end (delta: 3.1MB). 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 6 locations. The remainder module has 295 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.3s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 3.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 981 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2178 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2178 mSDsluCounter, 3237 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2134 mSDsCounter, 73 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 225 IncrementalHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73 mSolverCounterUnsat, 1103 mSDtfsCounter, 225 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 65]: 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, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3d3ae1e=0, NULL=0, tmp___0=0, head=0, pumpRunning=0, tmp___0=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5590147e=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6359268f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@762db74d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f3af619=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7604640d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@342ec253=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6af567e=29, methaneLevelCritical=0, tmp=0, \result=0, retValue_acc=1, retValue_acc=0, \result=1, \result=1, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1d99a9e5=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@627c7e57=0, tmp___2=29, methAndRunningLastTime=0, tmp=0, tmp=1, cleanupTimeShifts=4, \result=0, tmp=0, head=0, tmp___1=0, NULL=0, waterLevel=1, systemActive=1, tmp___0=0, \result=0, retValue_acc=0, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 65]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L131] int pumpRunning = 0; [L132] int systemActive = 1; [L345] int methAndRunningLastTime ; [L423] int waterLevel = 1; [L424] int methaneLevelCritical = 0; [L526] int cleanupTimeShifts = 4; [L801] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L600] int retValue_acc ; [L601] int tmp ; [L605] FCALL select_helpers() [L606] FCALL select_features() [L607] CALL, EXPR valid_product() [L413] int retValue_acc ; [L416] retValue_acc = 1 [L417] return (retValue_acc); [L607] RET, EXPR valid_product() [L607] tmp = valid_product() [L609] COND TRUE \read(tmp) [L611] FCALL setup() [L612] CALL runTest() [L593] CALL __utac_acc__Specification2_spec__1() [L350] methAndRunningLastTime = 0 [L593] RET __utac_acc__Specification2_spec__1() [L594] CALL test() [L56] int splverifierCounter ; [L57] int tmp ; [L58] int tmp___0 ; [L59] int tmp___1 ; [L60] int tmp___2 ; [L63] splverifierCounter = 0 Loop: [L65] COND TRUE 1 [L67] COND TRUE splverifierCounter < 4 [L73] tmp = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp)) [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___0)) [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___2) [L110] CALL timeShift() [L139] COND FALSE !(\read(pumpRunning)) [L146] COND TRUE \read(systemActive) [L148] CALL processEnvironment() [L194] int tmp ; [L197] COND FALSE !(\read(pumpRunning)) [L212] CALL processEnvironment__wrappee__highWaterSensor() [L168] int tmp ; [L171] COND TRUE ! pumpRunning [L173] CALL, EXPR isHighWaterLevel() [L291] int retValue_acc ; [L292] int tmp ; [L293] int tmp___0 ; [L297] CALL, EXPR isHighWaterSensorDry() [L503] int retValue_acc ; [L506] COND TRUE waterLevel < 2 [L507] retValue_acc = 1 [L508] return (retValue_acc); [L297] RET, EXPR isHighWaterSensorDry() [L297] tmp = isHighWaterSensorDry() [L299] COND TRUE \read(tmp) [L300] tmp___0 = 0 [L304] retValue_acc = tmp___0 [L305] return (retValue_acc); [L173] RET, EXPR isHighWaterLevel() [L173] tmp = isHighWaterLevel() [L175] COND FALSE !(\read(tmp)) [L181] FCALL processEnvironment__wrappee__base() [L212] RET processEnvironment__wrappee__highWaterSensor() [L148] RET processEnvironment() [L154] CALL __utac_acc__Specification2_spec__2() [L355] int tmp ; [L356] int tmp___0 ; [L360] CALL, EXPR isMethaneLevelCritical() [L462] int retValue_acc ; [L465] retValue_acc = methaneLevelCritical [L466] return (retValue_acc); [L360] RET, EXPR isMethaneLevelCritical() [L360] tmp = isMethaneLevelCritical() [L362] COND FALSE !(\read(tmp)) [L378] methAndRunningLastTime = 0 [L154] RET __utac_acc__Specification2_spec__2() [L110] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-07-13 04:17:42,641 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)