./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product28.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_product28.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 82c519f2bf81e68e983e1c89de9d6abbdaa163d4 .............................................................................................................................................................................................................................................................................................................................................................................................. 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 20:18:19,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:18:19,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:18:19,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:18:19,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:18:19,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:18:19,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:18:19,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:18:19,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:18:19,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:18:19,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:18:19,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:18:19,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:18:19,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:18:19,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:18:19,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:18:19,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:18:19,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:18:19,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:18:19,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:18:19,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:18:19,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:18:19,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:18:19,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:18:19,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:18:19,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:18:19,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:18:19,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:18:19,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:18:19,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:18:19,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:18:19,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:18:19,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:18:19,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:18:19,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:18:19,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:18:19,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:18:19,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:18:19,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:18:19,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:18:19,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:18:19,584 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:18:19,619 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:18:19,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:18:19,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:18:19,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:18:19,622 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:18:19,622 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:18:19,623 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:18:19,623 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:18:19,623 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:18:19,623 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:18:19,624 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:18:19,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:18:19,625 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:18:19,625 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:18:19,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:18:19,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:18:19,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:18:19,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:18:19,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:18:19,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:18:19,626 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:18:19,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:18:19,627 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:18:19,627 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:18:19,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:18:19,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:18:19,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:18:19,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:18:19,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:18:19,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:18:19,629 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:18:19,629 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82c519f2bf81e68e983e1c89de9d6abbdaa163d4 [2021-07-06 20:18:19,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:18:19,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:18:19,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:18:19,939 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:18:19,940 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:18:19,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product28.cil.c [2021-07-06 20:18:19,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efba3751e/838d3363f39449e0b430153eac41a34e/FLAG4c91158d1 [2021-07-06 20:18:20,373 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:18:20,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product28.cil.c [2021-07-06 20:18:20,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efba3751e/838d3363f39449e0b430153eac41a34e/FLAG4c91158d1 [2021-07-06 20:18:20,761 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efba3751e/838d3363f39449e0b430153eac41a34e [2021-07-06 20:18:20,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:18:20,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:18:20,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:18:20,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:18:20,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:18:20,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:18:20" (1/1) ... [2021-07-06 20:18:20,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@487630af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:20, skipping insertion in model container [2021-07-06 20:18:20,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:18:20" (1/1) ... [2021-07-06 20:18:20,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:18:20,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:18:20,939 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_product28.cil.c[1817,1830] [2021-07-06 20:18:21,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:18:21,068 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:18:21,079 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_product28.cil.c[1817,1830] [2021-07-06 20:18:21,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:18:21,160 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:18:21,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:21 WrapperNode [2021-07-06 20:18:21,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:18:21,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:18:21,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:18:21,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:18:21,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:21" (1/1) ... [2021-07-06 20:18:21,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:21" (1/1) ... [2021-07-06 20:18:21,217 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:18:21,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:18:21,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:18:21,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:18:21,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:21" (1/1) ... [2021-07-06 20:18:21,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:21" (1/1) ... [2021-07-06 20:18:21,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:21" (1/1) ... [2021-07-06 20:18:21,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:21" (1/1) ... [2021-07-06 20:18:21,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:21" (1/1) ... [2021-07-06 20:18:21,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:21" (1/1) ... [2021-07-06 20:18:21,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:21" (1/1) ... [2021-07-06 20:18:21,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:18:21,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:18:21,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:18:21,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:18:21,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:21" (1/1) ... [2021-07-06 20:18:21,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:18:21,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:18:21,273 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 20:18:21,278 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 20:18:21,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:18:21,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:18:21,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:18:21,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:18:22,142 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:18:22,142 INFO L299 CfgBuilder]: Removed 104 assume(true) statements. [2021-07-06 20:18:22,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:18:22 BoogieIcfgContainer [2021-07-06 20:18:22,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:18:22,144 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:18:22,145 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:18:22,147 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:18:22,148 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:18:22,148 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:18:20" (1/3) ... [2021-07-06 20:18:22,149 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@67e2258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:18:22, skipping insertion in model container [2021-07-06 20:18:22,149 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:18:22,149 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:18:21" (2/3) ... [2021-07-06 20:18:22,149 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@67e2258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:18:22, skipping insertion in model container [2021-07-06 20:18:22,149 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:18:22,149 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:18:22" (3/3) ... [2021-07-06 20:18:22,150 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product28.cil.c [2021-07-06 20:18:22,188 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:18:22,188 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:18:22,188 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:18:22,188 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:18:22,189 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:18:22,189 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:18:22,189 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:18:22,189 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:18:22,201 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 78 states, 77 states have (on average 1.5324675324675325) internal successors, (118), 77 states have internal predecessors, (118), 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 20:18:22,218 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2021-07-06 20:18:22,219 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:18:22,219 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:18:22,225 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:18:22,226 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:18:22,226 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:18:22,226 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 78 states, 77 states have (on average 1.5324675324675325) internal successors, (118), 77 states have internal predecessors, (118), 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 20:18:22,231 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2021-07-06 20:18:22,233 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:18:22,234 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:18:22,236 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:18:22,236 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:18:22,246 INFO L791 eck$LassoCheckResult]: Stem: 37#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~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);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~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);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);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 12#L-1true havoc main_#res;havoc main_#t~ret44, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 63#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; 73#L75true main_#t~ret44 := valid_product_#res;main_~tmp~5 := main_#t~ret44;havoc main_#t~ret44; 26#L578true assume 0 != main_~tmp~5; 70#L554true ~methAndRunningLastTime~0 := 0; 45#L462true havoc test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 46#L473-1true [2021-07-06 20:18:22,246 INFO L793 eck$LassoCheckResult]: Loop: 46#L473-1true assume !false; 5#L398true assume test_~splverifierCounter~0 < 4; 42#L399true test_~tmp~3 := test_#t~nondet38;havoc test_#t~nondet38; 49#L407true assume !(0 != test_~tmp~3); 52#L407-1true test_~tmp___0~1 := test_#t~nondet39;havoc test_#t~nondet39; 29#L417true assume !(0 != test_~tmp___0~1); 32#L417-1true test_~tmp___2~0 := test_#t~nondet40;havoc test_#t~nondet40; 8#L427true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 15#L435-1true assume !(0 != ~pumpRunning~0); 69#L200true assume !(0 != ~systemActive~0); 64#L207true havoc __utac_acc__Specification2_spec__2_#t~ret42, __utac_acc__Specification2_spec__2_#t~ret43, __utac_acc__Specification2_spec__2_~tmp~4, __utac_acc__Specification2_spec__2_~tmp___0~2;havoc __utac_acc__Specification2_spec__2_~tmp~4;havoc __utac_acc__Specification2_spec__2_~tmp___0~2;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; 38#L139true __utac_acc__Specification2_spec__2_#t~ret42 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~4 := __utac_acc__Specification2_spec__2_#t~ret42;havoc __utac_acc__Specification2_spec__2_#t~ret42; 43#L473true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~4);~methAndRunningLastTime~0 := 0; 46#L473-1true [2021-07-06 20:18:22,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:18:22,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-07-06 20:18:22,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:18:22,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610276410] [2021-07-06 20:18:22,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:18:22,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:18:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:18:22,447 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:18:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:18:22,572 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:18:22,618 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:18:22,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:18:22,626 INFO L82 PathProgramCache]: Analyzing trace with hash 12142292, now seen corresponding path program 1 times [2021-07-06 20:18:22,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:18:22,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566507940] [2021-07-06 20:18:22,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:18:22,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:18:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:18:22,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:18:22,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:18:22,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:18:22,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:18:22,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:18:22,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:18:22,670 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 20:18:22,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:18:22,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566507940] [2021-07-06 20:18:22,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566507940] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:18:22,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:18:22,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:18:22,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424472066] [2021-07-06 20:18:22,675 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:18:22,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:18:22,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:18:22,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:18:22,688 INFO L87 Difference]: Start difference. First operand has 78 states, 77 states have (on average 1.5324675324675325) internal successors, (118), 77 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 20:18:22,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:18:22,738 INFO L93 Difference]: Finished difference Result 149 states and 211 transitions. [2021-07-06 20:18:22,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:18:22,740 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 149 states and 211 transitions. [2021-07-06 20:18:22,746 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 94 [2021-07-06 20:18:22,751 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 149 states to 135 states and 196 transitions. [2021-07-06 20:18:22,752 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 135 [2021-07-06 20:18:22,753 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 135 [2021-07-06 20:18:22,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 135 states and 196 transitions. [2021-07-06 20:18:22,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:18:22,754 INFO L681 BuchiCegarLoop]: Abstraction has 135 states and 196 transitions. [2021-07-06 20:18:22,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states and 196 transitions. [2021-07-06 20:18:22,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2021-07-06 20:18:22,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 133 states have (on average 1.4511278195488722) internal successors, (193), 132 states have internal predecessors, (193), 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 20:18:22,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 193 transitions. [2021-07-06 20:18:22,796 INFO L704 BuchiCegarLoop]: Abstraction has 133 states and 193 transitions. [2021-07-06 20:18:22,796 INFO L587 BuchiCegarLoop]: Abstraction has 133 states and 193 transitions. [2021-07-06 20:18:22,796 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:18:22,796 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 133 states and 193 transitions. [2021-07-06 20:18:22,798 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 92 [2021-07-06 20:18:22,798 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:18:22,799 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:18:22,799 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:18:22,799 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:18:22,800 INFO L791 eck$LassoCheckResult]: Stem: 286#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~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);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~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);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);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 250#L-1 havoc main_#res;havoc main_#t~ret44, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 251#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; 309#L75 main_#t~ret44 := valid_product_#res;main_~tmp~5 := main_#t~ret44;havoc main_#t~ret44; 268#L578 assume 0 != main_~tmp~5; 269#L554 ~methAndRunningLastTime~0 := 0; 293#L462 havoc test_#t~nondet38, test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 291#L473-1 [2021-07-06 20:18:22,800 INFO L793 eck$LassoCheckResult]: Loop: 291#L473-1 assume !false; 294#L398 assume test_~splverifierCounter~0 < 4; 324#L399 test_~tmp~3 := test_#t~nondet38;havoc test_#t~nondet38; 323#L407 assume !(0 != test_~tmp~3); 321#L407-1 test_~tmp___0~1 := test_#t~nondet39;havoc test_#t~nondet39; 320#L417 assume !(0 != test_~tmp___0~1); 318#L417-1 test_~tmp___2~0 := test_#t~nondet40;havoc test_#t~nondet40; 317#L427 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 247#L435-1 assume !(0 != ~pumpRunning~0); 312#L200 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret18, processEnvironment_~tmp~0;havoc processEnvironment_~tmp~0; 301#L232 assume !(0 != ~pumpRunning~0); 302#L207 havoc __utac_acc__Specification2_spec__2_#t~ret42, __utac_acc__Specification2_spec__2_#t~ret43, __utac_acc__Specification2_spec__2_~tmp~4, __utac_acc__Specification2_spec__2_~tmp___0~2;havoc __utac_acc__Specification2_spec__2_~tmp~4;havoc __utac_acc__Specification2_spec__2_~tmp___0~2;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; 287#L139 __utac_acc__Specification2_spec__2_#t~ret42 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~4 := __utac_acc__Specification2_spec__2_#t~ret42;havoc __utac_acc__Specification2_spec__2_#t~ret42; 288#L473 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~4);~methAndRunningLastTime~0 := 0; 291#L473-1 [2021-07-06 20:18:22,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:18:22,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-07-06 20:18:22,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:18:22,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502366935] [2021-07-06 20:18:22,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:18:22,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:18:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:18:22,869 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:18:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:18:22,927 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:18:22,951 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:18:22,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:18:22,953 INFO L82 PathProgramCache]: Analyzing trace with hash 349417953, now seen corresponding path program 1 times [2021-07-06 20:18:22,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:18:22,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917273213] [2021-07-06 20:18:22,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:18:22,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:18:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:18:22,964 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:18:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:18:22,971 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:18:22,974 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:18:22,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:18:22,976 INFO L82 PathProgramCache]: Analyzing trace with hash 411805863, now seen corresponding path program 1 times [2021-07-06 20:18:22,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:18:22,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149614684] [2021-07-06 20:18:22,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:18:22,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:18:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:18:23,039 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:18:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:18:23,090 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:18:23,099 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:18:23,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:18:23,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-07-06 20:19:02,597 WARN L205 SmtUtils]: Spent 39.34 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-07-06 20:19:02,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:19:02,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2130 [2021-07-06 20:19:22,515 WARN L205 SmtUtils]: Spent 19.83 s on a formula simplification that was a NOOP. DAG size: 435 [2021-07-06 20:19:22,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:19:22 BoogieIcfgContainer [2021-07-06 20:19:22,604 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:19:22,605 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:19:22,605 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:19:22,605 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:19:22,605 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:18:22" (3/4) ... [2021-07-06 20:19:22,607 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:19:22,640 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:19:22,640 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:19:22,641 INFO L168 Benchmark]: Toolchain (without parser) took 61872.45 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 36.2 MB in the beginning and 36.2 MB in the end (delta: 59.4 kB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. [2021-07-06 20:19:22,641 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 58.7 MB. Free memory is still 40.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:19:22,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.06 ms. Allocated memory is still 58.7 MB. Free memory was 36.0 MB in the beginning and 30.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-07-06 20:19:22,642 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.90 ms. Allocated memory is still 58.7 MB. Free memory was 30.7 MB in the beginning and 27.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:19:22,642 INFO L168 Benchmark]: Boogie Preprocessor took 32.37 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 27.8 MB in the beginning and 53.1 MB in the end (delta: -25.3 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2021-07-06 20:19:22,643 INFO L168 Benchmark]: RCFGBuilder took 892.58 ms. Allocated memory is still 71.3 MB. Free memory was 53.1 MB in the beginning and 44.3 MB in the end (delta: 8.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:19:22,643 INFO L168 Benchmark]: BuchiAutomizer took 60459.79 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 43.9 MB in the beginning and 38.3 MB in the end (delta: 5.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:19:22,643 INFO L168 Benchmark]: Witness Printer took 35.21 ms. Allocated memory is still 86.0 MB. Free memory was 38.3 MB in the beginning and 36.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:19:22,645 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 is still 40.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 390.06 ms. Allocated memory is still 58.7 MB. Free memory was 36.0 MB in the beginning and 30.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.90 ms. Allocated memory is still 58.7 MB. Free memory was 30.7 MB in the beginning and 27.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.37 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 27.8 MB in the beginning and 53.1 MB in the end (delta: -25.3 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * RCFGBuilder took 892.58 ms. Allocated memory is still 71.3 MB. Free memory was 53.1 MB in the beginning and 44.3 MB in the end (delta: 8.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 60459.79 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 43.9 MB in the beginning and 38.3 MB in the end (delta: 5.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 16.1 GB. * Witness Printer took 35.21 ms. Allocated memory is still 86.0 MB. Free memory was 38.3 MB in the beginning and 36.2 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 3 locations. The remainder module has 133 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 60.4s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 60.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 32.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 133 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 108 SDtfs, 104 SDslu, 95 SDs, 0 SdLazy, 10 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.8ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 397]: 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=22916, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@499e6e8c=0, NULL=0, NULL=0, NULL=0, NULL=1, NULL=22909, retValue_acc=0, NULL=22901, NULL=22924, NULL=22907, NULL=22906, methaneLevelCritical=0, tmp=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7cf5e953=0, NULL=0, NULL=0, NULL=22921, NULL=0, tmp___1=0, NULL=0, NULL=0, NULL=22910, NULL=22913, cleanupTimeShifts=4, NULL=22917, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@8223ea6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@41987821=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4920ed48=0, NULL=22914, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@37461b8c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6328dfdc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1494261=60, NULL=0, systemActive=1, waterLevel=1, NULL=0, NULL=0, retValue_acc=0, NULL=22905, \result=1, head=0, pumpRunning=0, \result=0, NULL=22920, NULL=0, NULL=22922, NULL=0, NULL=0, tmp=1, NULL=0, NULL=22923, NULL=22925, NULL=0, NULL=0, NULL=22900, NULL=0, NULL=0, NULL=22912, NULL=0, retValue_acc=1, tmp___2=60, NULL=0, NULL=22903, tmp___0=0, NULL=22915, tmp___0=0, splverifierCounter=0, NULL=0, NULL=0, methAndRunningLastTime=0, \result=0, NULL=22919, NULL=22734, NULL=22902, NULL=22733, tmp=0, head=0, NULL=0, NULL=0, NULL=22911, NULL=0, NULL=22735, NULL=0, NULL=0, NULL=0, tmp=0, NULL=22908, NULL=22918} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L96] int waterLevel = 1; [L97] int methaneLevelCritical = 0; [L192] int pumpRunning = 0; [L193] int systemActive = 1; [L456] int methAndRunningLastTime ; [L495] int cleanupTimeShifts = 4; [L761] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L569] int retValue_acc ; [L570] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L576] tmp = valid_product() [L578] COND TRUE \read(tmp) [L461] methAndRunningLastTime = 0 [L388] int splverifierCounter ; [L389] int tmp ; [L390] int tmp___0 ; [L391] int tmp___1 ; [L392] int tmp___2 ; [L395] splverifierCounter = 0 Loop: [L397] COND TRUE 1 [L399] COND TRUE splverifierCounter < 4 [L405] tmp = __VERIFIER_nondet_int() [L407] COND FALSE !(\read(tmp)) [L415] tmp___0 = __VERIFIER_nondet_int() [L417] COND FALSE !(\read(tmp___0)) [L425] tmp___2 = __VERIFIER_nondet_int() [L427] COND TRUE \read(tmp___2) [L381] systemActive = 1 [L200] COND FALSE !(\read(pumpRunning)) [L207] COND TRUE \read(systemActive) [L229] int tmp ; [L232] COND FALSE !(\read(pumpRunning)) [L466] int tmp ; [L467] int tmp___0 ; [L135] int retValue_acc ; [L138] retValue_acc = methaneLevelCritical [L139] return (retValue_acc); [L471] tmp = isMethaneLevelCritical() [L473] COND FALSE !(\read(tmp)) [L489] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:19:22,696 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...