./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product10.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec 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_spec3_product10.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 5afec15b24012ce62630e94cc787fef1371f4427 ............................................................................................................................................................................................................................................................................................................................................................................................. 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-dev-20ed64e [2021-08-27 16:07:42,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:07:42,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:07:42,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:07:42,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:07:42,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:07:42,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:07:42,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:07:42,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:07:42,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:07:42,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:07:42,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:07:42,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:07:42,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:07:42,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:07:42,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:07:42,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:07:42,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:07:42,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:07:42,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:07:42,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:07:42,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:07:42,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:07:42,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:07:42,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:07:42,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:07:42,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:07:42,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:07:42,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:07:42,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:07:42,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:07:42,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:07:42,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:07:42,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:07:42,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:07:42,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:07:42,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:07:42,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:07:42,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:07:42,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:07:42,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:07:42,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:07:42,670 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:07:42,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:07:42,671 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:07:42,671 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:07:42,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:07:42,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:07:42,674 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:07:42,674 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:07:42,674 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:07:42,674 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:07:42,675 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:07:42,675 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:07:42,675 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:07:42,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:07:42,676 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:07:42,676 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:07:42,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:07:42,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:07:42,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:07:42,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:07:42,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:07:42,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:07:42,677 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:07:42,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:07:42,678 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:07:42,678 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:07:42,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:07:42,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:07:42,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:07:42,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:07:42,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:07:42,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:07:42,680 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:07:42,680 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5afec15b24012ce62630e94cc787fef1371f4427 [2021-08-27 16:07:43,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:07:43,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:07:43,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:07:43,036 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:07:43,037 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:07:43,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product10.cil.c [2021-08-27 16:07:43,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49e19b7f1/f5c21c1b1cfc4386a619cebda2303c57/FLAG1bd6c7e41 [2021-08-27 16:07:43,585 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:07:43,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product10.cil.c [2021-08-27 16:07:43,600 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49e19b7f1/f5c21c1b1cfc4386a619cebda2303c57/FLAG1bd6c7e41 [2021-08-27 16:07:44,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49e19b7f1/f5c21c1b1cfc4386a619cebda2303c57 [2021-08-27 16:07:44,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:07:44,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:07:44,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:07:44,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:07:44,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:07:44,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:07:44" (1/1) ... [2021-08-27 16:07:44,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db6fd28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:44, skipping insertion in model container [2021-08-27 16:07:44,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:07:44" (1/1) ... [2021-08-27 16:07:44,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:07:44,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:07:44,335 WARN L228 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_spec3_product10.cil.c[3019,3032] [2021-08-27 16:07:44,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:07:44,474 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:07:44,499 WARN L228 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_spec3_product10.cil.c[3019,3032] [2021-08-27 16:07:44,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:07:44,578 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:07:44,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:44 WrapperNode [2021-08-27 16:07:44,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:07:44,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:07:44,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:07:44,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:07:44,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:44" (1/1) ... [2021-08-27 16:07:44,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:44" (1/1) ... [2021-08-27 16:07:44,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:07:44,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:07:44,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:07:44,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:07:44,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:44" (1/1) ... [2021-08-27 16:07:44,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:44" (1/1) ... [2021-08-27 16:07:44,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:44" (1/1) ... [2021-08-27 16:07:44,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:44" (1/1) ... [2021-08-27 16:07:44,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:44" (1/1) ... [2021-08-27 16:07:44,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:44" (1/1) ... [2021-08-27 16:07:44,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:44" (1/1) ... [2021-08-27 16:07:44,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:07:44,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:07:44,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:07:44,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:07:44,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:44" (1/1) ... [2021-08-27 16:07:44,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:07:44,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:07:44,734 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) [2021-08-27 16:07:44,752 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 [2021-08-27 16:07:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:07:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:07:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:07:44,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:07:45,396 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:07:45,396 INFO L299 CfgBuilder]: Removed 74 assume(true) statements. [2021-08-27 16:07:45,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:07:45 BoogieIcfgContainer [2021-08-27 16:07:45,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:07:45,399 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:07:45,399 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:07:45,401 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:07:45,402 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:07:45,402 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:07:44" (1/3) ... [2021-08-27 16:07:45,403 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a5d675f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:07:45, skipping insertion in model container [2021-08-27 16:07:45,403 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:07:45,403 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:44" (2/3) ... [2021-08-27 16:07:45,403 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a5d675f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:07:45, skipping insertion in model container [2021-08-27 16:07:45,404 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:07:45,404 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:07:45" (3/3) ... [2021-08-27 16:07:45,405 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product10.cil.c [2021-08-27 16:07:45,436 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:07:45,436 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:07:45,436 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:07:45,436 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:07:45,437 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:07:45,437 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:07:45,437 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:07:45,437 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:07:45,448 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 60 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 59 states have internal predecessors, (90), 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) [2021-08-27 16:07:45,465 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 37 [2021-08-27 16:07:45,466 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:07:45,466 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:07:45,471 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:07:45,472 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:07:45,472 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:07:45,472 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 60 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 59 states have internal predecessors, (90), 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) [2021-08-27 16:07:45,476 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 37 [2021-08-27 16:07:45,476 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:07:45,476 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:07:45,476 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:07:45,477 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:07:45,480 INFO L791 eck$LassoCheckResult]: Stem: 45#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 31#L-1true havoc main_#res;havoc main_#t~ret78, main_~retValue_acc~9, main_~tmp~6;havoc main_~retValue_acc~9;havoc main_~tmp~6; 43#L67true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 56#L75true main_#t~ret78 := valid_product_#res;main_~tmp~6 := main_#t~ret78;havoc main_#t~ret78; 28#L865true assume 0 != main_~tmp~6; 42#L842true havoc test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_#t~nondet56, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 30#L764-1true [2021-08-27 16:07:45,481 INFO L793 eck$LassoCheckResult]: Loop: 30#L764-1true assume !false; 52#L555true assume test_~splverifierCounter~0 < 4; 47#L556true test_~tmp~3 := test_#t~nondet53;havoc test_#t~nondet53; 17#L564true assume !(0 != test_~tmp~3); 6#L564-1true test_~tmp___0~0 := test_#t~nondet54;havoc test_#t~nondet54; 40#L574true assume !(0 != test_~tmp___0~0); 57#L574-1true test_~tmp___2~0 := test_#t~nondet55;havoc test_#t~nondet55; 48#L584true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 4#L592-2true assume !(0 != ~pumpRunning~0); 5#L623true assume 0 != ~systemActive~0; 18#L630true havoc __utac_acc__Specification3_spec__1_#t~ret75, __utac_acc__Specification3_spec__1_#t~ret76, __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_~tmp~5, __utac_acc__Specification3_spec__1_~tmp___0~1, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~5;havoc __utac_acc__Specification3_spec__1_~tmp___0~1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 36#L129true __utac_acc__Specification3_spec__1_#t~ret75 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~5 := __utac_acc__Specification3_spec__1_#t~ret75;havoc __utac_acc__Specification3_spec__1_#t~ret75; 26#L758true assume 0 != __utac_acc__Specification3_spec__1_~tmp~5; 30#L764-1true [2021-08-27 16:07:45,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:45,485 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:07:45,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:45,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490211997] [2021-08-27 16:07:45,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:45,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:45,692 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:07:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:45,833 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:07:45,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:45,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1681619239, now seen corresponding path program 1 times [2021-08-27 16:07:45,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:45,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906370082] [2021-08-27 16:07:45,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:45,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:45,851 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:07:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:45,861 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:07:45,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:45,862 INFO L82 PathProgramCache]: Analyzing trace with hash 32659699, now seen corresponding path program 1 times [2021-08-27 16:07:45,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:45,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835274975] [2021-08-27 16:07:45,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:45,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:07:45,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:07:45,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:07:45,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835274975] [2021-08-27 16:07:45,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835274975] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:07:45,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:07:45,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:07:45,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152359228] [2021-08-27 16:07:46,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:07:46,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:07:46,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:07:46,135 INFO L87 Difference]: Start difference. First operand has 60 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 59 states have internal predecessors, (90), 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 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-08-27 16:07:46,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:07:46,275 INFO L93 Difference]: Finished difference Result 185 states and 263 transitions. [2021-08-27 16:07:46,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 16:07:46,277 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 185 states and 263 transitions. [2021-08-27 16:07:46,289 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 114 [2021-08-27 16:07:46,293 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 185 states to 163 states and 241 transitions. [2021-08-27 16:07:46,294 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 163 [2021-08-27 16:07:46,294 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 163 [2021-08-27 16:07:46,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 163 states and 241 transitions. [2021-08-27 16:07:46,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:07:46,296 INFO L681 BuchiCegarLoop]: Abstraction has 163 states and 241 transitions. [2021-08-27 16:07:46,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states and 241 transitions. [2021-08-27 16:07:46,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 100. [2021-08-27 16:07:46,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 100 states have (on average 1.4) internal successors, (140), 99 states have internal predecessors, (140), 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) [2021-08-27 16:07:46,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 140 transitions. [2021-08-27 16:07:46,337 INFO L704 BuchiCegarLoop]: Abstraction has 100 states and 140 transitions. [2021-08-27 16:07:46,337 INFO L587 BuchiCegarLoop]: Abstraction has 100 states and 140 transitions. [2021-08-27 16:07:46,338 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:07:46,338 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 100 states and 140 transitions. [2021-08-27 16:07:46,341 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 70 [2021-08-27 16:07:46,341 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:07:46,341 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:07:46,343 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:07:46,343 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:07:46,343 INFO L791 eck$LassoCheckResult]: Stem: 322#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 309#L-1 havoc main_#res;havoc main_#t~ret78, main_~retValue_acc~9, main_~tmp~6;havoc main_~retValue_acc~9;havoc main_~tmp~6; 310#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 321#L75 main_#t~ret78 := valid_product_#res;main_~tmp~6 := main_#t~ret78;havoc main_#t~ret78; 304#L865 assume 0 != main_~tmp~6; 305#L842 havoc test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_#t~nondet56, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 281#L764-1 [2021-08-27 16:07:46,343 INFO L793 eck$LassoCheckResult]: Loop: 281#L764-1 assume !false; 308#L555 assume test_~splverifierCounter~0 < 4; 328#L556 test_~tmp~3 := test_#t~nondet53;havoc test_#t~nondet53; 365#L564 assume !(0 != test_~tmp~3); 363#L564-1 test_~tmp___0~0 := test_#t~nondet54;havoc test_#t~nondet54; 362#L574 assume !(0 != test_~tmp___0~0); 361#L574-1 test_~tmp___2~0 := test_#t~nondet55;havoc test_#t~nondet55; 360#L584 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 357#L592-2 assume !(0 != ~pumpRunning~0); 344#L623 assume 0 != ~systemActive~0; 343#L630 havoc __utac_acc__Specification3_spec__1_#t~ret75, __utac_acc__Specification3_spec__1_#t~ret76, __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_~tmp~5, __utac_acc__Specification3_spec__1_~tmp___0~1, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~5;havoc __utac_acc__Specification3_spec__1_~tmp___0~1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 342#L129 __utac_acc__Specification3_spec__1_#t~ret75 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~5 := __utac_acc__Specification3_spec__1_#t~ret75;havoc __utac_acc__Specification3_spec__1_#t~ret75; 302#L758 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~5);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~3;havoc getWaterLevel_~retValue_acc~3;getWaterLevel_~retValue_acc~3 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~3; 303#L161 __utac_acc__Specification3_spec__1_#t~ret76 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~1 := __utac_acc__Specification3_spec__1_#t~ret76;havoc __utac_acc__Specification3_spec__1_#t~ret76; 329#L764 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~1); 281#L764-1 [2021-08-27 16:07:46,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:46,344 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:07:46,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:46,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594963637] [2021-08-27 16:07:46,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:46,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:46,401 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:07:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:46,465 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:07:46,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:46,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1128380277, now seen corresponding path program 1 times [2021-08-27 16:07:46,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:46,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112875478] [2021-08-27 16:07:46,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:46,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:46,474 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:07:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:46,485 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:07:46,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:46,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1321204773, now seen corresponding path program 1 times [2021-08-27 16:07:46,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:46,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425800683] [2021-08-27 16:07:46,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:46,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:46,538 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:07:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:46,626 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:08:25,512 WARN L207 SmtUtils]: Spent 38.71 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:09:05,488 WARN L207 SmtUtils]: Spent 19.83 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:09:05,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:09:05 BoogieIcfgContainer [2021-08-27 16:09:05,650 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:09:05,650 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:09:05,650 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:09:05,651 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:09:05,651 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:07:45" (3/4) ... [2021-08-27 16:09:05,653 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:09:05,704 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:09:05,705 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:09:05,705 INFO L168 Benchmark]: Toolchain (without parser) took 81607.85 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 36.6 MB in the beginning and 26.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 55.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:05,706 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 58.7 MB. Free memory was 41.1 MB in the beginning and 41.0 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:09:05,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 466.29 ms. Allocated memory is still 58.7 MB. Free memory was 36.4 MB in the beginning and 35.5 MB in the end (delta: 897.8 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:05,708 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.67 ms. Allocated memory is still 58.7 MB. Free memory was 35.5 MB in the beginning and 32.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:05,709 INFO L168 Benchmark]: Boogie Preprocessor took 42.11 ms. Allocated memory is still 58.7 MB. Free memory was 32.7 MB in the beginning and 30.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:05,709 INFO L168 Benchmark]: RCFGBuilder took 704.15 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 30.9 MB in the beginning and 51.1 MB in the end (delta: -20.2 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:05,709 INFO L168 Benchmark]: BuchiAutomizer took 80251.22 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 50.6 MB in the beginning and 28.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 69.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:05,711 INFO L168 Benchmark]: Witness Printer took 54.26 ms. Allocated memory is still 104.9 MB. Free memory was 28.5 MB in the beginning and 26.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:05,713 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 58.7 MB. Free memory was 41.1 MB in the beginning and 41.0 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 466.29 ms. Allocated memory is still 58.7 MB. Free memory was 36.4 MB in the beginning and 35.5 MB in the end (delta: 897.8 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.67 ms. Allocated memory is still 58.7 MB. Free memory was 35.5 MB in the beginning and 32.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.11 ms. Allocated memory is still 58.7 MB. Free memory was 32.7 MB in the beginning and 30.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 704.15 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 30.9 MB in the beginning and 51.1 MB in the end (delta: -20.2 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 80251.22 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 50.6 MB in the beginning and 28.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 69.3 MB. Max. memory is 16.1 GB. * Witness Printer took 54.26 ms. Allocated memory is still 104.9 MB. Free memory was 28.5 MB in the beginning and 26.4 MB in the end (delta: 2.1 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 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 100 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 80.1s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 79.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 27.9ms AutomataMinimizationTime, 1 MinimizatonAttempts, 63 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 100 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 106 SDtfs, 280 SDslu, 300 SDs, 0 SdLazy, 43 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 42.3ms Time LassoAnalysisResults: nont1 unkn0 SFLI0 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: 554]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=28055} State at position 1 is {NULL=39247, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=28055, NULL=39236, NULL=0, NULL=0, NULL=0, NULL=0, NULL=39238, retValue_acc=0, NULL=39243, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@8da11d4=0, NULL=39245, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@21d2632=0, NULL=39230, methaneLevelCritical=0, NULL=39250, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c3e4d54=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@485920d7=0, NULL=39246, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5100c0e6=0, NULL=0, NULL=39248, tmp___1=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1cfde567=0, NULL=39231, NULL=39237, cleanupTimeShifts=4, tmp=0, NULL=39226, NULL=39234, NULL=39232, tmp___0=1, NULL=0, systemActive=1, waterLevel=1, \result=1, NULL=0, NULL=0, retValue_acc=0, NULL=39242, tmp___0=0, NULL=0, NULL=39235, retValue_acc=1, NULL=28056, \result=1, head=0, pumpRunning=0, NULL=28057, \result=0, NULL=39240, NULL=0, NULL=39241, NULL=0, NULL=0, tmp=1, NULL=0, NULL=39233, NULL=0, NULL=0, NULL=39229, retValue_acc=1, tmp___2=60, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=39227, NULL=39225, NULL=39239, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3b06a1a7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3d6bcefb=60, tmp___1=0, head=0, NULL=0, NULL=0, NULL=39244, NULL=0, NULL=0, NULL=39228, NULL=39249, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L86] int waterLevel = 1; [L87] int methaneLevelCritical = 0; [L344] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L615] int pumpRunning = 0; [L616] int systemActive = 1; [L783] int cleanupTimeShifts = 4; [L856] int retValue_acc ; [L857] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L863] tmp = valid_product() [L865] COND TRUE \read(tmp) [L545] int splverifierCounter ; [L546] int tmp ; [L547] int tmp___0 ; [L548] int tmp___1 ; [L549] int tmp___2 ; [L552] splverifierCounter = 0 Loop: [L554] COND TRUE 1 [L556] COND TRUE splverifierCounter < 4 [L562] tmp = __VERIFIER_nondet_int() [L564] COND FALSE !(\read(tmp)) [L572] tmp___0 = __VERIFIER_nondet_int() [L574] COND FALSE !(\read(tmp___0)) [L582] tmp___2 = __VERIFIER_nondet_int() [L584] COND TRUE \read(tmp___2) [L744] systemActive = 1 [L623] COND FALSE !(\read(pumpRunning)) [L630] COND TRUE \read(systemActive) [L750] int tmp ; [L751] int tmp___0 ; [L752] int tmp___1 ; [L125] int retValue_acc ; [L128] retValue_acc = methaneLevelCritical [L129] return (retValue_acc); [L756] tmp = isMethaneLevelCritical() [L758] COND FALSE !(\read(tmp)) [L157] int retValue_acc ; [L160] retValue_acc = waterLevel [L161] return (retValue_acc); [L762] tmp___0 = getWaterLevel() [L764] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:09:05,759 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...