./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product63.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 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_product63.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 166d50f854e9d57ec06fdf30b85b3272203a25d5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 20:21:23,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:21:23,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:21:23,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:21:23,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:21:23,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:21:23,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:21:23,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:21:23,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:21:23,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:21:23,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:21:23,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:21:23,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:21:23,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:21:23,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:21:23,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:21:23,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:21:23,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:21:23,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:21:23,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:21:23,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:21:23,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:21:23,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:21:23,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:21:23,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:21:23,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:21:23,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:21:23,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:21:23,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:21:23,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:21:23,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:21:23,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:21:23,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:21:23,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:21:23,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:21:23,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:21:23,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:21:23,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:21:23,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:21:23,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:21:23,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:21:23,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:21:23,642 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:21:23,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:21:23,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:21:23,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:21:23,643 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:21:23,643 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:21:23,643 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:21:23,644 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:21:23,644 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:21:23,644 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:21:23,644 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:21:23,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:21:23,654 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:21:23,654 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:21:23,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:21:23,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:21:23,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:21:23,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:21:23,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:21:23,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:21:23,655 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:21:23,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:21:23,656 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:21:23,656 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:21:23,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:21:23,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:21:23,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:21:23,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:21:23,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:21:23,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:21:23,659 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:21:23,659 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 166d50f854e9d57ec06fdf30b85b3272203a25d5 [2021-07-06 20:21:23,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:21:23,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:21:23,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:21:23,917 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:21:23,917 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:21:23,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product63.cil.c [2021-07-06 20:21:23,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efa1e15ef/6e22dabc55f149ec897c76b3d9374b8c/FLAG8538ff65c [2021-07-06 20:21:24,365 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:21:24,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product63.cil.c [2021-07-06 20:21:24,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efa1e15ef/6e22dabc55f149ec897c76b3d9374b8c/FLAG8538ff65c [2021-07-06 20:21:24,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efa1e15ef/6e22dabc55f149ec897c76b3d9374b8c [2021-07-06 20:21:24,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:21:24,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:21:24,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:21:24,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:21:24,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:21:24,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:21:24" (1/1) ... [2021-07-06 20:21:24,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab19a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:24, skipping insertion in model container [2021-07-06 20:21:24,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:21:24" (1/1) ... [2021-07-06 20:21:24,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:21:24,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:21:24,599 WARN L224 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_product63.cil.c[2661,2674] [2021-07-06 20:21:24,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:21:24,726 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:21:24,752 WARN L224 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_product63.cil.c[2661,2674] [2021-07-06 20:21:24,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:21:24,817 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:21:24,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:24 WrapperNode [2021-07-06 20:21:24,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:21:24,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:21:24,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:21:24,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:21:24,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:24" (1/1) ... [2021-07-06 20:21:24,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:24" (1/1) ... [2021-07-06 20:21:24,892 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:21:24,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:21:24,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:21:24,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:21:24,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:24" (1/1) ... [2021-07-06 20:21:24,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:24" (1/1) ... [2021-07-06 20:21:24,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:24" (1/1) ... [2021-07-06 20:21:24,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:24" (1/1) ... [2021-07-06 20:21:24,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:24" (1/1) ... [2021-07-06 20:21:24,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:24" (1/1) ... [2021-07-06 20:21:24,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:24" (1/1) ... [2021-07-06 20:21:24,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:21:24,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:21:24,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:21:24,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:21:24,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:24" (1/1) ... [2021-07-06 20:21:24,945 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:21:24,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:21:24,983 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) [2021-07-06 20:21:24,992 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 [2021-07-06 20:21:25,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:21:25,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:21:25,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:21:25,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:21:25,838 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:21:25,838 INFO L299 CfgBuilder]: Removed 354 assume(true) statements. [2021-07-06 20:21:25,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:21:25 BoogieIcfgContainer [2021-07-06 20:21:25,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:21:25,841 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:21:25,841 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:21:25,843 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:21:25,843 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:21:25,844 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:21:24" (1/3) ... [2021-07-06 20:21:25,844 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@511e46ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:21:25, skipping insertion in model container [2021-07-06 20:21:25,844 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:21:25,844 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:21:24" (2/3) ... [2021-07-06 20:21:25,844 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@511e46ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:21:25, skipping insertion in model container [2021-07-06 20:21:25,844 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:21:25,845 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:21:25" (3/3) ... [2021-07-06 20:21:25,845 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product63.cil.c [2021-07-06 20:21:25,876 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:21:25,877 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:21:25,877 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:21:25,877 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:21:25,877 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:21:25,877 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:21:25,877 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:21:25,877 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:21:25,892 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 228 states, 227 states have (on average 1.5110132158590308) internal successors, (343), 227 states have internal predecessors, (343), 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) [2021-07-06 20:21:25,918 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2021-07-06 20:21:25,918 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:21:25,918 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:21:25,924 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:21:25,924 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:21:25,924 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:21:25,926 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 228 states, 227 states have (on average 1.5110132158590308) internal successors, (343), 227 states have internal predecessors, (343), 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) [2021-07-06 20:21:25,937 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 149 [2021-07-06 20:21:25,938 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:21:25,938 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:21:25,939 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:21:25,939 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:21:25,945 INFO L791 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(13);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(110, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 2 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(102, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(102, #t~string34.base, 2 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 3 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string36.base, #t~string36.offset, 1);call write~init~int(80, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(117, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(109, #t~string36.base, 3 + #t~string36.offset, 1);call write~init~int(112, #t~string36.base, 4 + #t~string36.offset, 1);call write~init~int(58, #t~string36.base, 5 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 6 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string38.base, #t~string38.offset, 1);call write~init~int(110, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string40.base, #t~string40.offset, 1);call write~init~int(102, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(102, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 3 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string42.base, #t~string42.offset, 1);call write~init~int(32, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 2 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string44.base, #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 1 + #t~string44.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 8#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 34#L653true havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 54#L661true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 226#L134true assume 0 != main_~tmp~0; 165#L105true ~methAndRunningLastTime~0 := 0; 62#L165true havoc test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_#t~nondet23, test_~splverifierCounter~0, test_~tmp~2, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~2;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 59#L176-1true [2021-07-06 20:21:25,946 INFO L793 eck$LassoCheckResult]: Loop: 59#L176-1true assume !false; 9#L318true assume test_~splverifierCounter~0 < 4; 115#L319true test_~tmp~2 := test_#t~nondet20;havoc test_#t~nondet20; 218#L327true assume !(0 != test_~tmp~2); 221#L327-1true test_~tmp___0~1 := test_#t~nondet21;havoc test_#t~nondet21; 143#L337true assume !(0 != test_~tmp___0~1); 144#L337-1true test_~tmp___2~0 := test_#t~nondet22;havoc test_#t~nondet22; 57#L347true assume 0 != test_~tmp___2~0; 162#L353-1true assume !(0 != ~pumpRunning~0); 183#L383true assume !(0 != ~systemActive~0); 137#L390true havoc __utac_acc__Specification2_spec__2_#t~ret8, __utac_acc__Specification2_spec__2_#t~ret9, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 13#L246-5true __utac_acc__Specification2_spec__2_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret8;havoc __utac_acc__Specification2_spec__2_#t~ret8; 64#L176true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 59#L176-1true [2021-07-06 20:21:25,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:21:25,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-07-06 20:21:25,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:21:25,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273792166] [2021-07-06 20:21:25,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:21:25,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:21:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:26,122 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:26,189 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:26,223 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:21:26,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:21:26,225 INFO L82 PathProgramCache]: Analyzing trace with hash 17744979, now seen corresponding path program 1 times [2021-07-06 20:21:26,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:21:26,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803043131] [2021-07-06 20:21:26,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:21:26,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:21:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:26,232 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:26,252 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:26,255 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:21:26,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:21:26,256 INFO L82 PathProgramCache]: Analyzing trace with hash 851041485, now seen corresponding path program 1 times [2021-07-06 20:21:26,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:21:26,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028844274] [2021-07-06 20:21:26,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:21:26,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:21:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:21:26,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:26,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:21:26,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:26,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:21:26,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:26,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:21:26,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:26,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:21:26,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:26,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:21:26,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:21:26,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:21:26,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028844274] [2021-07-06 20:21:26,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028844274] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:21:26,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:21:26,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 20:21:26,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314690103] [2021-07-06 20:21:26,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:26,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-07-06 20:21:26,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:21:26,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 20:21:26,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-06 20:21:26,389 INFO L87 Difference]: Start difference. First operand has 228 states, 227 states have (on average 1.5110132158590308) internal successors, (343), 227 states have internal predecessors, (343), 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 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-07-06 20:21:26,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:21:26,560 INFO L93 Difference]: Finished difference Result 502 states and 733 transitions. [2021-07-06 20:21:26,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 20:21:26,562 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 502 states and 733 transitions. [2021-07-06 20:21:26,566 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 327 [2021-07-06 20:21:26,574 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 502 states to 481 states and 712 transitions. [2021-07-06 20:21:26,575 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 481 [2021-07-06 20:21:26,578 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 481 [2021-07-06 20:21:26,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 481 states and 712 transitions. [2021-07-06 20:21:26,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:21:26,585 INFO L681 BuchiCegarLoop]: Abstraction has 481 states and 712 transitions. [2021-07-06 20:21:26,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states and 712 transitions. [2021-07-06 20:21:26,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 265. [2021-07-06 20:21:26,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 265 states have (on average 1.4754716981132074) internal successors, (391), 264 states have internal predecessors, (391), 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) [2021-07-06 20:21:26,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 391 transitions. [2021-07-06 20:21:26,611 INFO L704 BuchiCegarLoop]: Abstraction has 265 states and 391 transitions. [2021-07-06 20:21:26,611 INFO L587 BuchiCegarLoop]: Abstraction has 265 states and 391 transitions. [2021-07-06 20:21:26,611 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:21:26,611 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 265 states and 391 transitions. [2021-07-06 20:21:26,612 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 180 [2021-07-06 20:21:26,612 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:21:26,612 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:21:26,612 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:21:26,612 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:21:26,613 INFO L791 eck$LassoCheckResult]: Stem: 878#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(13);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(110, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 2 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(102, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(102, #t~string34.base, 2 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 3 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string36.base, #t~string36.offset, 1);call write~init~int(80, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(117, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(109, #t~string36.base, 3 + #t~string36.offset, 1);call write~init~int(112, #t~string36.base, 4 + #t~string36.offset, 1);call write~init~int(58, #t~string36.base, 5 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 6 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string38.base, #t~string38.offset, 1);call write~init~int(110, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string40.base, #t~string40.offset, 1);call write~init~int(102, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(102, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 3 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string42.base, #t~string42.offset, 1);call write~init~int(32, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 2 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string44.base, #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 1 + #t~string44.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 758#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 759#L653 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 813#L661 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 838#L134 assume 0 != main_~tmp~0; 951#L105 ~methAndRunningLastTime~0 := 0; 849#L165 havoc test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_#t~nondet23, test_~splverifierCounter~0, test_~tmp~2, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~2;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 784#L176-1 [2021-07-06 20:21:26,613 INFO L793 eck$LassoCheckResult]: Loop: 784#L176-1 assume !false; 760#L318 assume test_~splverifierCounter~0 < 4; 761#L319 test_~tmp~2 := test_#t~nondet20;havoc test_#t~nondet20; 908#L327 assume !(0 != test_~tmp~2); 934#L327-1 test_~tmp___0~1 := test_#t~nondet21;havoc test_#t~nondet21; 930#L337 assume !(0 != test_~tmp___0~1); 932#L337-1 test_~tmp___2~0 := test_#t~nondet22;havoc test_#t~nondet22; 843#L347 assume 0 != test_~tmp___2~0; 845#L353-1 assume !(0 != ~pumpRunning~0); 858#L383 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret26, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 916#L467 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret25, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 917#L441-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret24, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 941#L415-3 assume !(0 == ~pumpRunning~0); 920#L390 havoc __utac_acc__Specification2_spec__2_#t~ret8, __utac_acc__Specification2_spec__2_#t~ret9, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 770#L246-5 __utac_acc__Specification2_spec__2_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret8;havoc __utac_acc__Specification2_spec__2_#t~ret8; 771#L176 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 784#L176-1 [2021-07-06 20:21:26,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:21:26,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-07-06 20:21:26,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:21:26,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345943365] [2021-07-06 20:21:26,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:21:26,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:21:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:26,649 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:26,683 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:26,700 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:21:26,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:21:26,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1227870023, now seen corresponding path program 1 times [2021-07-06 20:21:26,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:21:26,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99130405] [2021-07-06 20:21:26,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:21:26,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:21:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:21:26,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:26,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:21:26,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:26,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:21:26,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:26,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:21:26,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:21:26,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:21:26,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99130405] [2021-07-06 20:21:26,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99130405] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:21:26,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:21:26,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:21:26,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983725122] [2021-07-06 20:21:26,737 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:21:26,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:21:26,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:21:26,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:21:26,738 INFO L87 Difference]: Start difference. First operand 265 states and 391 transitions. cyclomatic complexity: 129 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-07-06 20:21:26,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:21:26,843 INFO L93 Difference]: Finished difference Result 262 states and 365 transitions. [2021-07-06 20:21:26,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:21:26,844 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 262 states and 365 transitions. [2021-07-06 20:21:26,848 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 182 [2021-07-06 20:21:26,850 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 262 states to 262 states and 365 transitions. [2021-07-06 20:21:26,851 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 262 [2021-07-06 20:21:26,851 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 262 [2021-07-06 20:21:26,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 262 states and 365 transitions. [2021-07-06 20:21:26,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:21:26,852 INFO L681 BuchiCegarLoop]: Abstraction has 262 states and 365 transitions. [2021-07-06 20:21:26,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states and 365 transitions. [2021-07-06 20:21:26,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-07-06 20:21:26,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 262 states have (on average 1.3931297709923665) internal successors, (365), 261 states have internal predecessors, (365), 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) [2021-07-06 20:21:26,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 365 transitions. [2021-07-06 20:21:26,864 INFO L704 BuchiCegarLoop]: Abstraction has 262 states and 365 transitions. [2021-07-06 20:21:26,864 INFO L587 BuchiCegarLoop]: Abstraction has 262 states and 365 transitions. [2021-07-06 20:21:26,864 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:21:26,864 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 262 states and 365 transitions. [2021-07-06 20:21:26,876 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 182 [2021-07-06 20:21:26,877 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:21:26,877 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:21:26,878 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:21:26,878 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:21:26,878 INFO L791 eck$LassoCheckResult]: Stem: 1436#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(13);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(110, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 2 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(102, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(102, #t~string34.base, 2 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 3 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string36.base, #t~string36.offset, 1);call write~init~int(80, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(117, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(109, #t~string36.base, 3 + #t~string36.offset, 1);call write~init~int(112, #t~string36.base, 4 + #t~string36.offset, 1);call write~init~int(58, #t~string36.base, 5 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 6 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string38.base, #t~string38.offset, 1);call write~init~int(110, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string40.base, #t~string40.offset, 1);call write~init~int(102, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(102, #t~string40.base, 2 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 3 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string42.base, #t~string42.offset, 1);call write~init~int(32, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 2 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string44.base, #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 1 + #t~string44.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 1291#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 1292#L653 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 1359#L661 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 1401#L134 assume 0 != main_~tmp~0; 1372#L105 ~methAndRunningLastTime~0 := 0; 1373#L165 havoc test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_#t~nondet23, test_~splverifierCounter~0, test_~tmp~2, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~2;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1411#L176-1 [2021-07-06 20:21:26,878 INFO L793 eck$LassoCheckResult]: Loop: 1411#L176-1 assume !false; 1512#L318 assume test_~splverifierCounter~0 < 4; 1461#L319 test_~tmp~2 := test_#t~nondet20;havoc test_#t~nondet20; 1462#L327 assume !(0 != test_~tmp~2); 1332#L327-1 test_~tmp___0~1 := test_#t~nondet21;havoc test_#t~nondet21; 1323#L337 assume !(0 != test_~tmp___0~1); 1325#L337-1 test_~tmp___2~0 := test_#t~nondet22;havoc test_#t~nondet22; 1326#L347 assume 0 != test_~tmp___2~0; 1365#L353-1 assume !(0 != ~pumpRunning~0); 1368#L383 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret26, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1402#L467 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret25, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 1355#L441-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret24, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 1356#L415-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret45, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~3;havoc isHighWaterSensorDry_~retValue_acc~3; 1415#L286-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~3 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~3; 1416#L291-3 isHighWaterLevel_#t~ret45 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret45;havoc isHighWaterLevel_#t~ret45; 1420#L586-9 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~2 := 0; 1421#L586-11 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 1392#L592-3 processEnvironment__wrappee__highWaterSensor_#t~ret24 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~3 := processEnvironment__wrappee__highWaterSensor_#t~ret24;havoc processEnvironment__wrappee__highWaterSensor_#t~ret24; 1369#L419-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~3); 1354#L390 havoc __utac_acc__Specification2_spec__2_#t~ret8, __utac_acc__Specification2_spec__2_#t~ret9, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 1303#L246-5 __utac_acc__Specification2_spec__2_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret8;havoc __utac_acc__Specification2_spec__2_#t~ret8; 1304#L176 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 1411#L176-1 [2021-07-06 20:21:26,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:21:26,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-07-06 20:21:26,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:21:26,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732566485] [2021-07-06 20:21:26,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:21:26,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:21:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:26,896 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:26,915 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:26,920 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:21:26,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:21:26,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1200754989, now seen corresponding path program 1 times [2021-07-06 20:21:26,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:21:26,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584461348] [2021-07-06 20:21:26,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:21:26,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:21:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:26,930 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:26,932 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:26,933 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:21:26,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:21:26,934 INFO L82 PathProgramCache]: Analyzing trace with hash -2067939431, now seen corresponding path program 1 times [2021-07-06 20:21:26,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:21:26,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513789692] [2021-07-06 20:21:26,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:21:26,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:21:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:26,953 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:21:26,972 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:21:26,980 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:21:27,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:27,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-07-06 20:22:08,157 WARN L205 SmtUtils]: Spent 41.05 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-07-06 20:22:08,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:22:08,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2130 [2021-07-06 20:22:29,400 WARN L205 SmtUtils]: Spent 21.19 s on a formula simplification that was a NOOP. DAG size: 435 [2021-07-06 20:22:29,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:22:29 BoogieIcfgContainer [2021-07-06 20:22:29,478 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:22:29,479 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:22:29,479 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:22:29,479 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:22:29,479 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:21:25" (3/4) ... [2021-07-06 20:22:29,481 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:22:29,519 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:22:29,521 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:22:29,522 INFO L168 Benchmark]: Toolchain (without parser) took 65133.17 ms. Allocated memory was 52.4 MB in the beginning and 119.5 MB in the end (delta: 67.1 MB). Free memory was 28.6 MB in the beginning and 64.7 MB in the end (delta: -36.1 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2021-07-06 20:22:29,523 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 52.4 MB. Free memory was 34.7 MB in the beginning and 34.7 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:22:29,523 INFO L168 Benchmark]: CACSL2BoogieTranslator took 425.59 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 28.4 MB in the beginning and 37.5 MB in the end (delta: -9.1 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-07-06 20:22:29,523 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.18 ms. Allocated memory is still 65.0 MB. Free memory was 37.3 MB in the beginning and 31.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-07-06 20:22:29,523 INFO L168 Benchmark]: Boogie Preprocessor took 44.45 ms. Allocated memory is still 65.0 MB. Free memory was 31.8 MB in the beginning and 43.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-07-06 20:22:29,524 INFO L168 Benchmark]: RCFGBuilder took 899.63 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 43.4 MB in the beginning and 54.2 MB in the end (delta: -10.8 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. [2021-07-06 20:22:29,524 INFO L168 Benchmark]: BuchiAutomizer took 63637.59 ms. Allocated memory was 81.8 MB in the beginning and 119.5 MB in the end (delta: 37.7 MB). Free memory was 54.2 MB in the beginning and 67.7 MB in the end (delta: -13.4 MB). Peak memory consumption was 72.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:22:29,525 INFO L168 Benchmark]: Witness Printer took 42.75 ms. Allocated memory is still 119.5 MB. Free memory was 67.7 MB in the beginning and 64.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:22:29,527 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 52.4 MB. Free memory was 34.7 MB in the beginning and 34.7 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 425.59 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 28.4 MB in the beginning and 37.5 MB in the end (delta: -9.1 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.18 ms. Allocated memory is still 65.0 MB. Free memory was 37.3 MB in the beginning and 31.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.45 ms. Allocated memory is still 65.0 MB. Free memory was 31.8 MB in the beginning and 43.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 899.63 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 43.4 MB in the beginning and 54.2 MB in the end (delta: -10.8 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 63637.59 ms. Allocated memory was 81.8 MB in the beginning and 119.5 MB in the end (delta: 37.7 MB). Free memory was 54.2 MB in the beginning and 67.7 MB in the end (delta: -13.4 MB). Peak memory consumption was 72.1 MB. Max. memory is 16.1 GB. * Witness Printer took 42.75 ms. Allocated memory is still 119.5 MB. Free memory was 67.7 MB in the beginning and 64.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 262 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 63.5s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 63.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 29.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 216 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 265 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 573 SDtfs, 1795 SDslu, 1253 SDs, 0 SdLazy, 81 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 160.3ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 317]: 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 {NULL=0, NULL=1, NULL=43039, NULL=0, NULL=43035, NULL=32378, methaneLevelCritical=0, NULL=43040, retValue_acc=1, tmp=0, NULL=0, NULL=43032, NULL=0, retValue_acc=0, tmp___1=0, NULL=0, NULL=43031, cleanupTimeShifts=4, NULL=43030, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6e90e1e9=0, NULL=43025, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@fcdc24a=0, waterLevel=1, NULL=0, NULL=0, NULL=43033, \result=1, head=0, pumpRunning=0, tmp=1, retValue_acc=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18756ba=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@15d00273=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4395131a=69, \result=1, NULL=0, NULL=0, NULL=0, NULL=0, NULL=43041, NULL=0, tmp=1, NULL=0, NULL=43026, tmp___0=0, methAndRunningLastTime=0, NULL=43038, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b600f95=0, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@51207375=0, tmp=0, NULL=32371, NULL=32373, tmp=0, NULL=32374, retValue_acc=0, retValue_acc=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@44403e7b=0, NULL=43043, tmp___0=0, NULL=0, NULL=0, NULL=43037, NULL=0, NULL=0, tmp=0, NULL=43027, NULL=0, systemActive=1, NULL=43042, NULL=0, \result=0, NULL=32372, \result=0, NULL=0, NULL=43034, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6b45f715=0, NULL=0, tmp___0=0, NULL=43036, NULL=43028, NULL=32376, tmp___2=69, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7de986b9=0, splverifierCounter=0, NULL=0, \result=0, NULL=32375, NULL=43044, NULL=32377, tmp=0, NULL=43029, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1a2b5f56=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L42] int cleanupTimeShifts = 4; [L159] int methAndRunningLastTime ; [L203] int waterLevel = 1; [L204] int methaneLevelCritical = 0; [L376] int pumpRunning = 0; [L377] int systemActive = 1; [L835] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L125] int retValue_acc ; [L126] int tmp ; [L657] int retValue_acc ; [L660] retValue_acc = 1 [L661] return (retValue_acc); [L132] tmp = valid_product() [L134] COND TRUE \read(tmp) [L164] methAndRunningLastTime = 0 [L308] int splverifierCounter ; [L309] int tmp ; [L310] int tmp___0 ; [L311] int tmp___1 ; [L312] int tmp___2 ; [L315] splverifierCounter = 0 Loop: [L317] COND TRUE 1 [L319] COND TRUE splverifierCounter < 4 [L325] tmp = __VERIFIER_nondet_int() [L327] COND FALSE !(\read(tmp)) [L335] tmp___0 = __VERIFIER_nondet_int() [L337] COND FALSE !(\read(tmp___0)) [L345] tmp___2 = __VERIFIER_nondet_int() [L347] COND TRUE \read(tmp___2) [L383] COND FALSE !(\read(pumpRunning)) [L390] COND TRUE \read(systemActive) [L464] int tmp ; [L467] COND FALSE !(\read(pumpRunning)) [L438] int tmp ; [L441] COND FALSE !(\read(pumpRunning)) [L412] int tmp ; [L415] COND TRUE ! pumpRunning [L578] int retValue_acc ; [L579] int tmp ; [L580] int tmp___0 ; [L283] int retValue_acc ; [L286] COND TRUE waterLevel < 2 [L287] retValue_acc = 1 [L288] return (retValue_acc); [L584] tmp = isHighWaterSensorDry() [L586] COND TRUE \read(tmp) [L587] tmp___0 = 0 [L591] retValue_acc = tmp___0 [L592] return (retValue_acc); [L417] tmp = isHighWaterLevel() [L419] COND FALSE !(\read(tmp)) [L169] int tmp ; [L170] int tmp___0 ; [L242] int retValue_acc ; [L245] retValue_acc = methaneLevelCritical [L246] return (retValue_acc); [L174] tmp = isMethaneLevelCritical() [L176] COND FALSE !(\read(tmp)) [L192] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:22:29,577 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...