./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product32.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_spec4_product32.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 1a5eadc7d48ecaba327c1cfd8d218dab923acf56 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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 20:29:24,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:29:24,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:29:24,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:29:24,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:29:24,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:29:24,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:29:24,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:29:24,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:29:24,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:29:24,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:29:24,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:29:24,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:29:24,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:29:24,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:29:24,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:29:24,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:29:24,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:29:24,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:29:24,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:29:24,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:29:24,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:29:24,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:29:24,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:29:24,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:29:24,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:29:24,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:29:24,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:29:24,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:29:24,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:29:24,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:29:24,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:29:24,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:29:24,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:29:24,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:29:24,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:29:24,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:29:24,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:29:24,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:29:24,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:29:24,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:29:24,754 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:29:24,782 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:29:24,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:29:24,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:29:24,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:29:24,785 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:29:24,785 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:29:24,785 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:29:24,785 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:29:24,786 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:29:24,786 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:29:24,786 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:29:24,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:29:24,787 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:29:24,787 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:29:24,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:29:24,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:29:24,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:29:24,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:29:24,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:29:24,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:29:24,788 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:29:24,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:29:24,788 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:29:24,788 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:29:24,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:29:24,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:29:24,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:29:24,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:29:24,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:29:24,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:29:24,790 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:29:24,790 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a5eadc7d48ecaba327c1cfd8d218dab923acf56 [2021-07-06 20:29:25,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:29:25,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:29:25,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:29:25,018 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:29:25,019 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:29:25,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product32.cil.c [2021-07-06 20:29:25,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f08804f7/617e296c0d9446e48ec67ead18acd5ff/FLAG5665233dc [2021-07-06 20:29:25,440 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:29:25,450 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product32.cil.c [2021-07-06 20:29:25,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f08804f7/617e296c0d9446e48ec67ead18acd5ff/FLAG5665233dc [2021-07-06 20:29:25,875 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f08804f7/617e296c0d9446e48ec67ead18acd5ff [2021-07-06 20:29:25,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:29:25,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:29:25,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:29:25,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:29:25,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:29:25,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:29:25" (1/1) ... [2021-07-06 20:29:25,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6321bbcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:29:25, skipping insertion in model container [2021-07-06 20:29:25,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:29:25" (1/1) ... [2021-07-06 20:29:25,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:29:25,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:29:26,002 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_spec4_product32.cil.c[2243,2256] [2021-07-06 20:29:26,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:29:26,126 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:29:26,148 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_spec4_product32.cil.c[2243,2256] [2021-07-06 20:29:26,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:29:26,217 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:29:26,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:29:26 WrapperNode [2021-07-06 20:29:26,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:29:26,220 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:29:26,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:29:26,220 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:29:26,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:29:26" (1/1) ... [2021-07-06 20:29:26,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:29:26" (1/1) ... [2021-07-06 20:29:26,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:29:26,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:29:26,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:29:26,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:29:26,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:29:26" (1/1) ... [2021-07-06 20:29:26,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:29:26" (1/1) ... [2021-07-06 20:29:26,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:29:26" (1/1) ... [2021-07-06 20:29:26,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:29:26" (1/1) ... [2021-07-06 20:29:26,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:29:26" (1/1) ... [2021-07-06 20:29:26,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:29:26" (1/1) ... [2021-07-06 20:29:26,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:29:26" (1/1) ... [2021-07-06 20:29:26,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:29:26,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:29:26,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:29:26,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:29:26,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:29:26" (1/1) ... [2021-07-06 20:29:26,347 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:29:26,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:29:26,376 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 20:29:26,401 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 20:29:26,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:29:26,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:29:26,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:29:26,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:29:27,032 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:29:27,033 INFO L299 CfgBuilder]: Removed 162 assume(true) statements. [2021-07-06 20:29:27,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:29:27 BoogieIcfgContainer [2021-07-06 20:29:27,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:29:27,035 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:29:27,035 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:29:27,037 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:29:27,037 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:29:27,037 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:29:25" (1/3) ... [2021-07-06 20:29:27,038 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@111155cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:29:27, skipping insertion in model container [2021-07-06 20:29:27,038 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:29:27,038 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:29:26" (2/3) ... [2021-07-06 20:29:27,038 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@111155cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:29:27, skipping insertion in model container [2021-07-06 20:29:27,038 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:29:27,038 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:29:27" (3/3) ... [2021-07-06 20:29:27,039 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec4_product32.cil.c [2021-07-06 20:29:27,064 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:29:27,064 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:29:27,064 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:29:27,064 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:29:27,065 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:29:27,065 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:29:27,065 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:29:27,065 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:29:27,075 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 104 states, 103 states have (on average 1.5145631067961165) internal successors, (156), 103 states have internal predecessors, (156), 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 20:29:27,090 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 67 [2021-07-06 20:29:27,090 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:29:27,091 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:29:27,095 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:29:27,095 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:29:27,095 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:29:27,096 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 104 states, 103 states have (on average 1.5145631067961165) internal successors, (156), 103 states have internal predecessors, (156), 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 20:29:27,100 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 67 [2021-07-06 20:29:27,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:29:27,100 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:29:27,100 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:29:27,100 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:29:27,103 INFO L791 eck$LassoCheckResult]: Stem: 62#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);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~string42.base, #t~string42.offset := #Ultimate.allocOnStack(30);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(9);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(21);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~string51.base, #t~string51.offset := #Ultimate.allocOnStack(30);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(9);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 8#L-1true havoc main_#res;havoc main_#t~ret10, main_~retValue_acc~2, main_~tmp~1;havoc main_~retValue_acc~2;havoc main_~tmp~1; 78#L96true 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; 76#L104true main_#t~ret10 := valid_product_#res;main_~tmp~1 := main_#t~ret10;havoc main_#t~ret10; 28#L205true assume 0 != main_~tmp~1; 97#L181true havoc test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 40#L53-1true [2021-07-06 20:29:27,104 INFO L793 eck$LassoCheckResult]: Loop: 40#L53-1true assume !false; 65#L911true assume test_~splverifierCounter~0 < 4; 43#L912true test_~tmp~9 := test_#t~nondet77;havoc test_#t~nondet77; 46#L920true assume !(0 != test_~tmp~9); 47#L920-1true test_~tmp___0~2 := test_#t~nondet78;havoc test_#t~nondet78; 72#L930true assume !(0 != test_~tmp___0~2); 74#L930-1true test_~tmp___2~0 := test_#t~nondet79;havoc test_#t~nondet79; 19#L940true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 23#L948-1true assume !(0 != ~pumpRunning~0); 41#L689true assume !(0 != ~systemActive~0); 70#L696true havoc __utac_acc__Specification4_spec__1_#t~ret7, __utac_acc__Specification4_spec__1_#t~ret8, __utac_acc__Specification4_spec__1_~tmp~0, __utac_acc__Specification4_spec__1_~tmp___0~0;havoc __utac_acc__Specification4_spec__1_~tmp~0;havoc __utac_acc__Specification4_spec__1_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 49#L298true __utac_acc__Specification4_spec__1_#t~ret7 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~0 := __utac_acc__Specification4_spec__1_#t~ret7;havoc __utac_acc__Specification4_spec__1_#t~ret7; 50#L53true assume !(0 == __utac_acc__Specification4_spec__1_~tmp~0); 40#L53-1true [2021-07-06 20:29:27,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:29:27,107 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-07-06 20:29:27,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:29:27,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540263413] [2021-07-06 20:29:27,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:29:27,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:29:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:29:27,279 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:29:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:29:27,332 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:29:27,352 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:29:27,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:29:27,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1670755444, now seen corresponding path program 1 times [2021-07-06 20:29:27,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:29:27,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966709105] [2021-07-06 20:29:27,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:29:27,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:29:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:29:27,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:29:27,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:29:27,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:29:27,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:29:27,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:29:27,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:29:27,416 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 20:29:27,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:29:27,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966709105] [2021-07-06 20:29:27,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966709105] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:29:27,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:29:27,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:29:27,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71550832] [2021-07-06 20:29:27,421 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:29:27,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:29:27,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:29:27,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:29:27,437 INFO L87 Difference]: Start difference. First operand has 104 states, 103 states have (on average 1.5145631067961165) internal successors, (156), 103 states have internal predecessors, (156), 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 20:29:27,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:29:27,474 INFO L93 Difference]: Finished difference Result 202 states and 288 transitions. [2021-07-06 20:29:27,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:29:27,490 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 202 states and 288 transitions. [2021-07-06 20:29:27,494 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 130 [2021-07-06 20:29:27,499 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 202 states to 188 states and 273 transitions. [2021-07-06 20:29:27,500 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 188 [2021-07-06 20:29:27,507 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 188 [2021-07-06 20:29:27,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 188 states and 273 transitions. [2021-07-06 20:29:27,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:29:27,509 INFO L681 BuchiCegarLoop]: Abstraction has 188 states and 273 transitions. [2021-07-06 20:29:27,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states and 273 transitions. [2021-07-06 20:29:27,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2021-07-06 20:29:27,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 186 states have (on average 1.4516129032258065) internal successors, (270), 185 states have internal predecessors, (270), 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 20:29:27,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 270 transitions. [2021-07-06 20:29:27,546 INFO L704 BuchiCegarLoop]: Abstraction has 186 states and 270 transitions. [2021-07-06 20:29:27,546 INFO L587 BuchiCegarLoop]: Abstraction has 186 states and 270 transitions. [2021-07-06 20:29:27,547 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:29:27,547 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 186 states and 270 transitions. [2021-07-06 20:29:27,550 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 128 [2021-07-06 20:29:27,551 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:29:27,552 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:29:27,552 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:29:27,553 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:29:27,553 INFO L791 eck$LassoCheckResult]: Stem: 395#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);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~string42.base, #t~string42.offset := #Ultimate.allocOnStack(30);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(9);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(21);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~string51.base, #t~string51.offset := #Ultimate.allocOnStack(30);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(9);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(25);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 324#L-1 havoc main_#res;havoc main_#t~ret10, main_~retValue_acc~2, main_~tmp~1;havoc main_~retValue_acc~2;havoc main_~tmp~1; 325#L96 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; 403#L104 main_#t~ret10 := valid_product_#res;main_~tmp~1 := main_#t~ret10;havoc main_#t~ret10; 360#L205 assume 0 != main_~tmp~1; 361#L181 havoc test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 418#L53-1 [2021-07-06 20:29:27,553 INFO L793 eck$LassoCheckResult]: Loop: 418#L53-1 assume !false; 461#L911 assume test_~splverifierCounter~0 < 4; 462#L912 test_~tmp~9 := test_#t~nondet77;havoc test_#t~nondet77; 494#L920 assume !(0 != test_~tmp~9); 492#L920-1 test_~tmp___0~2 := test_#t~nondet78;havoc test_#t~nondet78; 491#L930 assume !(0 != test_~tmp___0~2); 489#L930-1 test_~tmp___2~0 := test_#t~nondet79;havoc test_#t~nondet79; 488#L940 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 344#L948-1 assume !(0 != ~pumpRunning~0); 485#L689 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 484#L747 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret56, processEnvironment__wrappee__methaneQuery_~tmp~5;havoc processEnvironment__wrappee__methaneQuery_~tmp~5; 469#L721-1 assume !(0 != ~pumpRunning~0); 468#L696 havoc __utac_acc__Specification4_spec__1_#t~ret7, __utac_acc__Specification4_spec__1_#t~ret8, __utac_acc__Specification4_spec__1_~tmp~0, __utac_acc__Specification4_spec__1_~tmp___0~0;havoc __utac_acc__Specification4_spec__1_~tmp~0;havoc __utac_acc__Specification4_spec__1_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 467#L298 __utac_acc__Specification4_spec__1_#t~ret7 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~0 := __utac_acc__Specification4_spec__1_#t~ret7;havoc __utac_acc__Specification4_spec__1_#t~ret7; 465#L53 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~0); 418#L53-1 [2021-07-06 20:29:27,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:29:27,554 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-07-06 20:29:27,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:29:27,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948656709] [2021-07-06 20:29:27,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:29:27,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:29:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:29:27,583 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:29:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:29:27,607 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:29:27,618 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:29:27,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:29:27,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1427585826, now seen corresponding path program 1 times [2021-07-06 20:29:27,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:29:27,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650371640] [2021-07-06 20:29:27,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:29:27,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:29:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:29:27,625 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:29:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:29:27,628 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:29:27,631 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:29:27,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:29:27,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1021999224, now seen corresponding path program 1 times [2021-07-06 20:29:27,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:29:27,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982480433] [2021-07-06 20:29:27,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:29:27,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:29:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:29:27,683 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:29:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:29:27,723 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:29:27,736 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:29:27,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:29:27,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-07-06 20:30:07,480 WARN L205 SmtUtils]: Spent 39.64 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-07-06 20:30:07,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:30:07,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2127 [2021-07-06 20:30:28,045 WARN L205 SmtUtils]: Spent 20.51 s on a formula simplification that was a NOOP. DAG size: 433 [2021-07-06 20:30:28,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:30:28 BoogieIcfgContainer [2021-07-06 20:30:28,191 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:30:28,192 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:30:28,197 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:30:28,197 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:30:28,198 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:29:27" (3/4) ... [2021-07-06 20:30:28,199 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:30:28,284 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:30:28,284 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:30:28,285 INFO L168 Benchmark]: Toolchain (without parser) took 62406.89 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 39.9 MB in the beginning and 25.6 MB in the end (delta: 14.3 MB). Peak memory consumption was 41.0 MB. Max. memory is 16.1 GB. [2021-07-06 20:30:28,285 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 60.8 MB. Free memory is still 42.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:30:28,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.73 ms. Allocated memory is still 60.8 MB. Free memory was 39.8 MB in the beginning and 33.2 MB in the end (delta: 6.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:30:28,286 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.26 ms. Allocated memory is still 60.8 MB. Free memory was 33.2 MB in the beginning and 29.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:30:28,286 INFO L168 Benchmark]: Boogie Preprocessor took 54.65 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 29.8 MB in the beginning and 55.1 MB in the end (delta: -25.2 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-07-06 20:30:28,287 INFO L168 Benchmark]: RCFGBuilder took 692.40 ms. Allocated memory is still 73.4 MB. Free memory was 54.7 MB in the beginning and 42.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. [2021-07-06 20:30:28,297 INFO L168 Benchmark]: BuchiAutomizer took 61156.99 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 41.6 MB in the beginning and 28.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 40.3 MB. Max. memory is 16.1 GB. [2021-07-06 20:30:28,297 INFO L168 Benchmark]: Witness Printer took 92.13 ms. Allocated memory is still 88.1 MB. Free memory was 28.5 MB in the beginning and 25.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:30:28,300 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 60.8 MB. Free memory is still 42.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 340.73 ms. Allocated memory is still 60.8 MB. Free memory was 39.8 MB in the beginning and 33.2 MB in the end (delta: 6.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.26 ms. Allocated memory is still 60.8 MB. Free memory was 33.2 MB in the beginning and 29.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.65 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 29.8 MB in the beginning and 55.1 MB in the end (delta: -25.2 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 692.40 ms. Allocated memory is still 73.4 MB. Free memory was 54.7 MB in the beginning and 42.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 61156.99 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 41.6 MB in the beginning and 28.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 40.3 MB. Max. memory is 16.1 GB. * Witness Printer took 92.13 ms. Allocated memory is still 88.1 MB. Free memory was 28.5 MB in the beginning and 25.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 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 186 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 61.1s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 60.9s. 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 28.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 186 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 146 SDtfs, 142 SDslu, 134 SDs, 0 SdLazy, 10 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.5ms 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: 910]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=15016} State at position 1 is {NULL=0, NULL=0, retValue_acc=0, NULL=15016, NULL=0, NULL=15030, NULL=0, NULL=0, NULL=0, NULL=15035, NULL=0, NULL=0, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@631ae076=0, NULL=0, NULL=0, NULL=15043, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@241808ab=0, NULL=0, tmp___1=0, tmp=0, NULL=0, NULL=0, NULL=15021, tmp___0=0, NULL=15023, cleanupTimeShifts=4, NULL=15041, NULL=15024, NULL=15031, NULL=15037, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6e6e2d6b=76, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a71dcbc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@15a856df=0, NULL=0, systemActive=1, waterLevel=1, NULL=15029, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6bb2f88=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2329152e=0, NULL=15017, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3225c61d=0, NULL=15026, NULL=0, NULL=0, NULL=0, NULL=15019, \result=1, NULL=15022, head=0, pumpRunning=0, NULL=15027, \result=0, NULL=15034, tmp=1, NULL=0, NULL=0, NULL=0, NULL=15036, NULL=15033, NULL=15044, tmp=1, NULL=0, NULL=15040, NULL=0, NULL=15032, retValue_acc=1, tmp___2=76, NULL=0, tmp___0=0, retValue_acc=1, splverifierCounter=0, NULL=0, NULL=15039, NULL=15018, head=0, tmp=0, NULL=0, NULL=0, NULL=15020, NULL=15025, NULL=15042, NULL=0, NULL=15038, NULL=15028, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c1f4fd5=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L118] int cleanupTimeShifts = 4; [L223] int waterLevel = 1; [L224] int methaneLevelCritical = 0; [L481] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L682] int pumpRunning = 0; [L683] int systemActive = 1; [L196] int retValue_acc ; [L197] int tmp ; [L100] int retValue_acc ; [L103] retValue_acc = 1 [L104] return (retValue_acc); [L203] tmp = valid_product() [L205] COND TRUE \read(tmp) [L901] int splverifierCounter ; [L902] int tmp ; [L903] int tmp___0 ; [L904] int tmp___1 ; [L905] int tmp___2 ; [L908] splverifierCounter = 0 Loop: [L910] COND TRUE 1 [L912] COND TRUE splverifierCounter < 4 [L918] tmp = __VERIFIER_nondet_int() [L920] COND FALSE !(\read(tmp)) [L928] tmp___0 = __VERIFIER_nondet_int() [L930] COND FALSE !(\read(tmp___0)) [L938] tmp___2 = __VERIFIER_nondet_int() [L940] COND TRUE \read(tmp___2) [L895] systemActive = 1 [L689] COND FALSE !(\read(pumpRunning)) [L696] COND TRUE \read(systemActive) [L744] int tmp ; [L747] COND FALSE !(\read(pumpRunning)) [L718] int tmp ; [L721] COND FALSE !(\read(pumpRunning)) [L46] int tmp ; [L47] int tmp___0 ; [L294] int retValue_acc ; [L297] retValue_acc = waterLevel [L298] return (retValue_acc); [L51] tmp = getWaterLevel() [L53] COND FALSE !(tmp == 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:30:28,403 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...