./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product41.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product41.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 0cfed743c16ce3c8683c42b92f2e032d4ce7b489a9d3a5e140ec6101c472b3cb --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 20:25:11,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 20:25:11,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 20:25:11,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 20:25:11,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 20:25:11,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 20:25:11,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 20:25:11,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 20:25:11,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 20:25:11,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 20:25:11,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 20:25:11,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 20:25:11,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 20:25:11,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 20:25:11,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 20:25:11,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 20:25:11,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 20:25:11,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 20:25:11,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 20:25:11,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 20:25:11,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 20:25:11,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 20:25:11,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 20:25:11,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 20:25:11,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 20:25:11,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 20:25:11,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 20:25:11,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 20:25:11,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 20:25:11,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 20:25:11,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 20:25:11,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 20:25:11,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 20:25:12,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 20:25:12,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 20:25:12,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 20:25:12,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 20:25:12,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 20:25:12,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 20:25:12,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 20:25:12,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 20:25:12,004 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-22 20:25:12,030 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 20:25:12,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 20:25:12,031 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 20:25:12,031 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 20:25:12,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 20:25:12,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 20:25:12,032 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 20:25:12,033 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-22 20:25:12,033 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-22 20:25:12,033 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-22 20:25:12,034 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-22 20:25:12,034 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-22 20:25:12,034 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-22 20:25:12,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 20:25:12,034 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 20:25:12,034 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 20:25:12,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 20:25:12,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 20:25:12,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 20:25:12,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-22 20:25:12,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-22 20:25:12,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-22 20:25:12,035 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 20:25:12,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 20:25:12,036 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-22 20:25:12,036 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 20:25:12,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-22 20:25:12,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 20:25:12,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 20:25:12,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 20:25:12,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 20:25:12,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 20:25:12,038 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-22 20:25:12,038 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cfed743c16ce3c8683c42b92f2e032d4ce7b489a9d3a5e140ec6101c472b3cb [2021-12-22 20:25:12,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 20:25:12,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 20:25:12,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 20:25:12,248 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 20:25:12,248 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 20:25:12,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product41.cil.c [2021-12-22 20:25:12,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83d288952/232b9323efbd4d53802a95512ab7582f/FLAGba3ca8a94 [2021-12-22 20:25:12,686 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 20:25:12,687 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product41.cil.c [2021-12-22 20:25:12,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83d288952/232b9323efbd4d53802a95512ab7582f/FLAGba3ca8a94 [2021-12-22 20:25:13,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83d288952/232b9323efbd4d53802a95512ab7582f [2021-12-22 20:25:13,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 20:25:13,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 20:25:13,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 20:25:13,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 20:25:13,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 20:25:13,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:25:13" (1/1) ... [2021-12-22 20:25:13,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79da4691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:13, skipping insertion in model container [2021-12-22 20:25:13,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:25:13" (1/1) ... [2021-12-22 20:25:13,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 20:25:13,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 20:25:13,340 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product41.cil.c[17978,17991] [2021-12-22 20:25:13,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 20:25:13,349 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 20:25:13,409 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product41.cil.c[17978,17991] [2021-12-22 20:25:13,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 20:25:13,431 INFO L208 MainTranslator]: Completed translation [2021-12-22 20:25:13,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:13 WrapperNode [2021-12-22 20:25:13,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 20:25:13,432 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 20:25:13,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 20:25:13,433 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 20:25:13,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:13" (1/1) ... [2021-12-22 20:25:13,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:13" (1/1) ... [2021-12-22 20:25:13,497 INFO L137 Inliner]: procedures = 53, calls = 152, calls flagged for inlining = 49, calls inlined = 59, statements flattened = 485 [2021-12-22 20:25:13,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 20:25:13,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 20:25:13,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 20:25:13,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 20:25:13,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:13" (1/1) ... [2021-12-22 20:25:13,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:13" (1/1) ... [2021-12-22 20:25:13,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:13" (1/1) ... [2021-12-22 20:25:13,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:13" (1/1) ... [2021-12-22 20:25:13,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:13" (1/1) ... [2021-12-22 20:25:13,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:13" (1/1) ... [2021-12-22 20:25:13,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:13" (1/1) ... [2021-12-22 20:25:13,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 20:25:13,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 20:25:13,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 20:25:13,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 20:25:13,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:13" (1/1) ... [2021-12-22 20:25:13,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 20:25:13,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 20:25:13,592 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) [2021-12-22 20:25:13,610 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 [2021-12-22 20:25:13,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 20:25:13,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 20:25:13,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 20:25:13,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 20:25:13,688 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 20:25:13,690 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 20:25:14,038 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 20:25:14,043 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 20:25:14,043 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 20:25:14,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:25:14 BoogieIcfgContainer [2021-12-22 20:25:14,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 20:25:14,060 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-22 20:25:14,060 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-22 20:25:14,063 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-22 20:25:14,063 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 20:25:14,063 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.12 08:25:13" (1/3) ... [2021-12-22 20:25:14,064 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@40d84e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 08:25:14, skipping insertion in model container [2021-12-22 20:25:14,064 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 20:25:14,065 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:13" (2/3) ... [2021-12-22 20:25:14,065 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@40d84e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 08:25:14, skipping insertion in model container [2021-12-22 20:25:14,065 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 20:25:14,065 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:25:14" (3/3) ... [2021-12-22 20:25:14,067 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product41.cil.c [2021-12-22 20:25:14,102 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-22 20:25:14,103 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-22 20:25:14,103 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-22 20:25:14,103 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-22 20:25:14,103 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-22 20:25:14,103 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-22 20:25:14,103 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-22 20:25:14,103 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-22 20:25:14,128 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 123 states, 122 states have (on average 1.3770491803278688) internal successors, (168), 122 states have internal predecessors, (168), 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) [2021-12-22 20:25:14,154 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 78 [2021-12-22 20:25:14,154 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 20:25:14,154 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 20:25:14,163 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 20:25:14,163 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 20:25:14,163 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-22 20:25:14,164 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 123 states, 122 states have (on average 1.3770491803278688) internal successors, (168), 122 states have internal predecessors, (168), 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) [2021-12-22 20:25:14,176 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 78 [2021-12-22 20:25:14,176 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 20:25:14,176 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 20:25:14,177 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 20:25:14,178 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 20:25:14,185 INFO L791 eck$LassoCheckResult]: Stem: 111#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 37#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~8#1, main_~tmp~5#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~5#1;assume { :begin_inline_select_helpers } true; 57#L75true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 114#L68true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 29#L83true main_#t~ret29#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~5#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 58#L548true assume 0 != main_~tmp~5#1;assume { :begin_inline_setup } true; 3#L525true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~3#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~3#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 68#L281-2true [2021-12-22 20:25:14,186 INFO L793 eck$LassoCheckResult]: Loop: 68#L281-2true assume !false; 6#L282true assume test_~splverifierCounter~0#1 < 4; 89#L283true test_~tmp~3#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 72#L291true assume !(0 != test_~tmp~3#1); 71#L291-2true test_~tmp___0~1#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 80#L301true assume !(0 != test_~tmp___0~1#1); 31#L301-2true test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 47#L311true assume 0 != test_~tmp___2~0#1; 44#L317-2true assume { :begin_inline_timeShift } true; 21#L105true assume !(0 != ~pumpRunning~0); 38#L105-2true assume !(0 != ~systemActive~0); 62#L112-1true assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~4#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;isMethaneLevelCritical_~retValue_acc~5#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~5#1; 26#L415-1true __utac_acc__Specification3_spec__1_#t~ret21#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~4#1 := __utac_acc__Specification3_spec__1_#t~ret21#1;havoc __utac_acc__Specification3_spec__1_#t~ret21#1; 107#L347true assume 0 != __utac_acc__Specification3_spec__1_~tmp~4#1; 113#L353-1true assume { :end_inline___utac_acc__Specification3_spec__1 } true; 48#L122true assume { :end_inline_timeShift } true; 68#L281-2true [2021-12-22 20:25:14,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:14,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 1 times [2021-12-22 20:25:14,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:14,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394038492] [2021-12-22 20:25:14,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:14,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:14,325 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:25:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:14,370 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:25:14,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:14,373 INFO L85 PathProgramCache]: Analyzing trace with hash -325980650, now seen corresponding path program 1 times [2021-12-22 20:25:14,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:14,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953378696] [2021-12-22 20:25:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:14,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:14,405 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:25:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:14,415 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:25:14,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:14,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1029438426, now seen corresponding path program 1 times [2021-12-22 20:25:14,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:14,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965422235] [2021-12-22 20:25:14,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:14,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 20:25:14,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 20:25:14,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 20:25:14,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965422235] [2021-12-22 20:25:14,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965422235] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 20:25:14,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 20:25:14,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 20:25:14,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815231526] [2021-12-22 20:25:14,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 20:25:14,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 20:25:14,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 20:25:14,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 20:25:14,683 INFO L87 Difference]: Start difference. First operand has 123 states, 122 states have (on average 1.3770491803278688) internal successors, (168), 122 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 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) [2021-12-22 20:25:14,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 20:25:14,737 INFO L93 Difference]: Finished difference Result 120 states and 154 transitions. [2021-12-22 20:25:14,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 20:25:14,741 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 120 states and 154 transitions. [2021-12-22 20:25:14,743 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 74 [2021-12-22 20:25:14,746 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 120 states to 110 states and 144 transitions. [2021-12-22 20:25:14,747 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 110 [2021-12-22 20:25:14,748 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 110 [2021-12-22 20:25:14,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110 states and 144 transitions. [2021-12-22 20:25:14,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 20:25:14,749 INFO L681 BuchiCegarLoop]: Abstraction has 110 states and 144 transitions. [2021-12-22 20:25:14,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states and 144 transitions. [2021-12-22 20:25:14,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-12-22 20:25:14,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 110 states have (on average 1.309090909090909) internal successors, (144), 109 states have internal predecessors, (144), 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) [2021-12-22 20:25:14,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 144 transitions. [2021-12-22 20:25:14,770 INFO L704 BuchiCegarLoop]: Abstraction has 110 states and 144 transitions. [2021-12-22 20:25:14,770 INFO L587 BuchiCegarLoop]: Abstraction has 110 states and 144 transitions. [2021-12-22 20:25:14,770 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-22 20:25:14,770 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 110 states and 144 transitions. [2021-12-22 20:25:14,771 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 74 [2021-12-22 20:25:14,771 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 20:25:14,771 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 20:25:14,772 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 20:25:14,772 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 20:25:14,772 INFO L791 eck$LassoCheckResult]: Stem: 369#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 315#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~8#1, main_~tmp~5#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~5#1;assume { :begin_inline_select_helpers } true; 316#L75 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 342#L68 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 302#L83 main_#t~ret29#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~5#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 303#L548 assume 0 != main_~tmp~5#1;assume { :begin_inline_setup } true; 263#L525 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~3#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~3#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 264#L281-2 [2021-12-22 20:25:14,772 INFO L793 eck$LassoCheckResult]: Loop: 264#L281-2 assume !false; 265#L282 assume test_~splverifierCounter~0#1 < 4; 266#L283 test_~tmp~3#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 353#L291 assume !(0 != test_~tmp~3#1); 351#L291-2 test_~tmp___0~1#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 352#L301 assume !(0 != test_~tmp___0~1#1); 306#L301-2 test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 307#L311 assume 0 != test_~tmp___2~0#1; 271#L317-2 assume { :begin_inline_timeShift } true; 293#L105 assume !(0 != ~pumpRunning~0); 294#L105-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~0#1;havoc processEnvironment_~tmp~0#1; 317#L137 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 322#L129-1 assume { :end_inline_processEnvironment__wrappee__base } true; 323#L137-1 assume { :end_inline_processEnvironment } true; 345#L112-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~4#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;isMethaneLevelCritical_~retValue_acc~5#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~5#1; 300#L415-1 __utac_acc__Specification3_spec__1_#t~ret21#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~4#1 := __utac_acc__Specification3_spec__1_#t~ret21#1;havoc __utac_acc__Specification3_spec__1_#t~ret21#1; 301#L347 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4#1; 340#L353-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 332#L122 assume { :end_inline_timeShift } true; 264#L281-2 [2021-12-22 20:25:14,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:14,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 2 times [2021-12-22 20:25:14,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:14,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234348080] [2021-12-22 20:25:14,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:14,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:14,781 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:25:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:14,790 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:25:14,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:14,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1621737013, now seen corresponding path program 1 times [2021-12-22 20:25:14,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:14,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995427894] [2021-12-22 20:25:14,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:14,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 20:25:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 20:25:14,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 20:25:14,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995427894] [2021-12-22 20:25:14,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995427894] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 20:25:14,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 20:25:14,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 20:25:14,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536075877] [2021-12-22 20:25:14,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 20:25:14,804 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-22 20:25:14,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 20:25:14,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 20:25:14,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 20:25:14,805 INFO L87 Difference]: Start difference. First operand 110 states and 144 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 20:25:14,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 20:25:14,835 INFO L93 Difference]: Finished difference Result 171 states and 218 transitions. [2021-12-22 20:25:14,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 20:25:14,836 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 171 states and 218 transitions. [2021-12-22 20:25:14,837 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 120 [2021-12-22 20:25:14,839 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 171 states to 171 states and 218 transitions. [2021-12-22 20:25:14,839 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 171 [2021-12-22 20:25:14,839 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 171 [2021-12-22 20:25:14,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 171 states and 218 transitions. [2021-12-22 20:25:14,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 20:25:14,840 INFO L681 BuchiCegarLoop]: Abstraction has 171 states and 218 transitions. [2021-12-22 20:25:14,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states and 218 transitions. [2021-12-22 20:25:14,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2021-12-22 20:25:14,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 171 states have (on average 1.2748538011695907) internal successors, (218), 170 states have internal predecessors, (218), 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) [2021-12-22 20:25:14,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 218 transitions. [2021-12-22 20:25:14,846 INFO L704 BuchiCegarLoop]: Abstraction has 171 states and 218 transitions. [2021-12-22 20:25:14,846 INFO L587 BuchiCegarLoop]: Abstraction has 171 states and 218 transitions. [2021-12-22 20:25:14,846 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-22 20:25:14,846 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 171 states and 218 transitions. [2021-12-22 20:25:14,847 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 120 [2021-12-22 20:25:14,847 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 20:25:14,847 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 20:25:14,848 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 20:25:14,848 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 20:25:14,848 INFO L791 eck$LassoCheckResult]: Stem: 669#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 603#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~8#1, main_~tmp~5#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~5#1;assume { :begin_inline_select_helpers } true; 604#L75 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 631#L68 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 589#L83 main_#t~ret29#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~5#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 590#L548 assume 0 != main_~tmp~5#1;assume { :begin_inline_setup } true; 550#L525 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~3#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~3#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 551#L281-2 [2021-12-22 20:25:14,848 INFO L793 eck$LassoCheckResult]: Loop: 551#L281-2 assume !false; 552#L282 assume test_~splverifierCounter~0#1 < 4; 553#L283 test_~tmp~3#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 644#L291 assume !(0 != test_~tmp~3#1); 642#L291-2 test_~tmp___0~1#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 643#L301 assume !(0 != test_~tmp___0~1#1); 593#L301-2 test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 594#L311 assume 0 != test_~tmp___2~0#1; 558#L317-2 assume { :begin_inline_timeShift } true; 578#L105 assume !(0 != ~pumpRunning~0); 579#L105-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~0#1;havoc processEnvironment_~tmp~0#1; 605#L137 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret16#1, isHighWaterLevel_~retValue_acc~4#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~4#1;havoc isHighWaterLevel_~tmp~2#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~7#1;havoc isHighWaterSensorDry_~retValue_acc~7#1; 555#L455 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~7#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~7#1; 556#L460 isHighWaterLevel_#t~ret16#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~2#1 := isHighWaterLevel_#t~ret16#1;havoc isHighWaterLevel_#t~ret16#1; 630#L257 assume 0 != isHighWaterLevel_~tmp~2#1;isHighWaterLevel_~tmp___0~0#1 := 0; 608#L257-2 isHighWaterLevel_~retValue_acc~4#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~4#1; 609#L263 processEnvironment_#t~ret5#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~0#1 := processEnvironment_#t~ret5#1;havoc processEnvironment_#t~ret5#1; 613#L141 assume !(0 != processEnvironment_~tmp~0#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 615#L129 assume { :end_inline_processEnvironment__wrappee__base } true; 667#L137-1 assume { :end_inline_processEnvironment } true; 687#L112-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~4#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;isMethaneLevelCritical_~retValue_acc~5#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~5#1; 686#L415-1 __utac_acc__Specification3_spec__1_#t~ret21#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~4#1 := __utac_acc__Specification3_spec__1_#t~ret21#1;havoc __utac_acc__Specification3_spec__1_#t~ret21#1; 668#L347 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4#1; 628#L353-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 618#L122 assume { :end_inline_timeShift } true; 551#L281-2 [2021-12-22 20:25:14,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:14,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 3 times [2021-12-22 20:25:14,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:14,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54399718] [2021-12-22 20:25:14,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:14,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:14,857 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:25:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:14,864 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:25:14,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:14,864 INFO L85 PathProgramCache]: Analyzing trace with hash 105517567, now seen corresponding path program 1 times [2021-12-22 20:25:14,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:14,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440505390] [2021-12-22 20:25:14,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:14,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 20:25:14,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 20:25:14,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 20:25:14,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440505390] [2021-12-22 20:25:14,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440505390] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 20:25:14,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 20:25:14,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 20:25:14,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074113320] [2021-12-22 20:25:14,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 20:25:14,883 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-22 20:25:14,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 20:25:14,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 20:25:14,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 20:25:14,884 INFO L87 Difference]: Start difference. First operand 171 states and 218 transitions. cyclomatic complexity: 49 Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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) [2021-12-22 20:25:14,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 20:25:14,918 INFO L93 Difference]: Finished difference Result 487 states and 616 transitions. [2021-12-22 20:25:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 20:25:14,919 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 487 states and 616 transitions. [2021-12-22 20:25:14,921 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 352 [2021-12-22 20:25:14,924 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 487 states to 487 states and 616 transitions. [2021-12-22 20:25:14,924 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 487 [2021-12-22 20:25:14,925 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 487 [2021-12-22 20:25:14,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 487 states and 616 transitions. [2021-12-22 20:25:14,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 20:25:14,926 INFO L681 BuchiCegarLoop]: Abstraction has 487 states and 616 transitions. [2021-12-22 20:25:14,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states and 616 transitions. [2021-12-22 20:25:14,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 177. [2021-12-22 20:25:14,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 177 states have (on average 1.265536723163842) internal successors, (224), 176 states have internal predecessors, (224), 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) [2021-12-22 20:25:14,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 224 transitions. [2021-12-22 20:25:14,934 INFO L704 BuchiCegarLoop]: Abstraction has 177 states and 224 transitions. [2021-12-22 20:25:14,934 INFO L587 BuchiCegarLoop]: Abstraction has 177 states and 224 transitions. [2021-12-22 20:25:14,934 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-22 20:25:14,935 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 177 states and 224 transitions. [2021-12-22 20:25:14,935 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 124 [2021-12-22 20:25:14,935 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 20:25:14,936 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 20:25:14,936 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 20:25:14,936 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 20:25:14,936 INFO L791 eck$LassoCheckResult]: Stem: 1342#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1273#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~8#1, main_~tmp~5#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~5#1;assume { :begin_inline_select_helpers } true; 1274#L75 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1302#L68 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 1259#L83 main_#t~ret29#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~5#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 1260#L548 assume 0 != main_~tmp~5#1;assume { :begin_inline_setup } true; 1218#L525 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~3#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~3#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1219#L281-2 [2021-12-22 20:25:14,937 INFO L793 eck$LassoCheckResult]: Loop: 1219#L281-2 assume !false; 1220#L282 assume test_~splverifierCounter~0#1 < 4; 1221#L283 test_~tmp~3#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 1391#L291 assume !(0 != test_~tmp~3#1); 1389#L291-2 test_~tmp___0~1#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 1323#L301 assume !(0 != test_~tmp___0~1#1); 1263#L301-2 test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 1264#L311 assume 0 != test_~tmp___2~0#1; 1227#L317-2 assume { :begin_inline_timeShift } true; 1247#L105 assume !(0 != ~pumpRunning~0); 1248#L105-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~0#1;havoc processEnvironment_~tmp~0#1; 1277#L137 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret16#1, isHighWaterLevel_~retValue_acc~4#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~4#1;havoc isHighWaterLevel_~tmp~2#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~7#1;havoc isHighWaterSensorDry_~retValue_acc~7#1; 1223#L455 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~7#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~7#1; 1224#L460 isHighWaterLevel_#t~ret16#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~2#1 := isHighWaterLevel_#t~ret16#1;havoc isHighWaterLevel_#t~ret16#1; 1343#L257 assume !(0 != isHighWaterLevel_~tmp~2#1);isHighWaterLevel_~tmp___0~0#1 := 1; 1278#L257-2 isHighWaterLevel_~retValue_acc~4#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~4#1; 1279#L263 processEnvironment_#t~ret5#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~0#1 := processEnvironment_#t~ret5#1;havoc processEnvironment_#t~ret5#1; 1283#L141 assume !(0 != processEnvironment_~tmp~0#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1285#L129 assume { :end_inline_processEnvironment__wrappee__base } true; 1314#L137-1 assume { :end_inline_processEnvironment } true; 1305#L112-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~4#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;isMethaneLevelCritical_~retValue_acc~5#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~5#1; 1256#L415-1 __utac_acc__Specification3_spec__1_#t~ret21#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~4#1 := __utac_acc__Specification3_spec__1_#t~ret21#1;havoc __utac_acc__Specification3_spec__1_#t~ret21#1; 1257#L347 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4#1; 1298#L353-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 1290#L122 assume { :end_inline_timeShift } true; 1219#L281-2 [2021-12-22 20:25:14,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:14,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 4 times [2021-12-22 20:25:14,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:14,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523056634] [2021-12-22 20:25:14,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:14,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:14,944 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:25:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:14,951 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:25:14,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:14,952 INFO L85 PathProgramCache]: Analyzing trace with hash 806582145, now seen corresponding path program 1 times [2021-12-22 20:25:14,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:14,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330532177] [2021-12-22 20:25:14,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:14,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 20:25:14,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 20:25:14,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 20:25:14,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330532177] [2021-12-22 20:25:14,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330532177] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 20:25:14,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 20:25:14,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 20:25:14,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208417917] [2021-12-22 20:25:14,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 20:25:14,977 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-22 20:25:14,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 20:25:14,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 20:25:14,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 20:25:14,978 INFO L87 Difference]: Start difference. First operand 177 states and 224 transitions. cyclomatic complexity: 49 Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-12-22 20:25:15,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 20:25:15,025 INFO L93 Difference]: Finished difference Result 393 states and 497 transitions. [2021-12-22 20:25:15,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 20:25:15,026 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 393 states and 497 transitions. [2021-12-22 20:25:15,028 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 284 [2021-12-22 20:25:15,029 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 393 states to 393 states and 497 transitions. [2021-12-22 20:25:15,030 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 393 [2021-12-22 20:25:15,030 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 393 [2021-12-22 20:25:15,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 393 states and 497 transitions. [2021-12-22 20:25:15,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 20:25:15,031 INFO L681 BuchiCegarLoop]: Abstraction has 393 states and 497 transitions. [2021-12-22 20:25:15,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states and 497 transitions. [2021-12-22 20:25:15,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 186. [2021-12-22 20:25:15,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 186 states have (on average 1.2526881720430108) internal successors, (233), 185 states have internal predecessors, (233), 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) [2021-12-22 20:25:15,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 233 transitions. [2021-12-22 20:25:15,036 INFO L704 BuchiCegarLoop]: Abstraction has 186 states and 233 transitions. [2021-12-22 20:25:15,036 INFO L587 BuchiCegarLoop]: Abstraction has 186 states and 233 transitions. [2021-12-22 20:25:15,036 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-22 20:25:15,036 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 186 states and 233 transitions. [2021-12-22 20:25:15,037 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 130 [2021-12-22 20:25:15,037 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 20:25:15,037 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 20:25:15,037 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 20:25:15,038 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 20:25:15,038 INFO L791 eck$LassoCheckResult]: Stem: 1923#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1858#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~8#1, main_~tmp~5#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~5#1;assume { :begin_inline_select_helpers } true; 1859#L75 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1887#L68 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 1844#L83 main_#t~ret29#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~5#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 1845#L548 assume 0 != main_~tmp~5#1;assume { :begin_inline_setup } true; 1800#L525 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~3#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~3#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1801#L281-2 [2021-12-22 20:25:15,038 INFO L793 eck$LassoCheckResult]: Loop: 1801#L281-2 assume !false; 1804#L282 assume test_~splverifierCounter~0#1 < 4; 1805#L283 test_~tmp~3#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 1984#L291 assume !(0 != test_~tmp~3#1); 1982#L291-2 test_~tmp___0~1#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 1980#L301 assume !(0 != test_~tmp___0~1#1); 1978#L301-2 test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 1977#L311 assume 0 != test_~tmp___2~0#1; 1975#L317-2 assume { :begin_inline_timeShift } true; 1832#L105 assume !(0 != ~pumpRunning~0); 1833#L105-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~0#1;havoc processEnvironment_~tmp~0#1; 1860#L137 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret16#1, isHighWaterLevel_~retValue_acc~4#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~4#1;havoc isHighWaterLevel_~tmp~2#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~7#1;havoc isHighWaterSensorDry_~retValue_acc~7#1; 1807#L455 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~7#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~7#1; 1809#L460 isHighWaterLevel_#t~ret16#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~2#1 := isHighWaterLevel_#t~ret16#1;havoc isHighWaterLevel_#t~ret16#1; 1935#L257 assume 0 != isHighWaterLevel_~tmp~2#1;isHighWaterLevel_~tmp___0~0#1 := 0; 1933#L257-2 isHighWaterLevel_~retValue_acc~4#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~4#1; 1931#L263 processEnvironment_#t~ret5#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~0#1 := processEnvironment_#t~ret5#1;havoc processEnvironment_#t~ret5#1; 1928#L141 assume !(0 != processEnvironment_~tmp~0#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1921#L129 assume { :end_inline_processEnvironment__wrappee__base } true; 1922#L137-1 assume { :end_inline_processEnvironment } true; 1890#L112-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~4#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;isMethaneLevelCritical_~retValue_acc~5#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~5#1; 1841#L415-1 __utac_acc__Specification3_spec__1_#t~ret21#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~4#1 := __utac_acc__Specification3_spec__1_#t~ret21#1;havoc __utac_acc__Specification3_spec__1_#t~ret21#1; 1842#L347 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4#1; 1883#L353-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 1873#L122 assume { :end_inline_timeShift } true; 1801#L281-2 [2021-12-22 20:25:15,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:15,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 5 times [2021-12-22 20:25:15,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:15,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388536089] [2021-12-22 20:25:15,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:15,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:15,045 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:25:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:15,050 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:25:15,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:15,051 INFO L85 PathProgramCache]: Analyzing trace with hash 692323581, now seen corresponding path program 1 times [2021-12-22 20:25:15,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:15,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735593880] [2021-12-22 20:25:15,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:15,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:15,055 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:25:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:15,094 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:25:15,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:15,095 INFO L85 PathProgramCache]: Analyzing trace with hash -558681159, now seen corresponding path program 1 times [2021-12-22 20:25:15,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:15,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551865499] [2021-12-22 20:25:15,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:15,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 20:25:15,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 20:25:15,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 20:25:15,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551865499] [2021-12-22 20:25:15,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551865499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 20:25:15,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 20:25:15,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 20:25:15,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438363530] [2021-12-22 20:25:15,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 20:25:15,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 20:25:15,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 20:25:15,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 20:25:15,318 INFO L87 Difference]: Start difference. First operand 186 states and 233 transitions. cyclomatic complexity: 49 Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-12-22 20:25:15,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 20:25:15,417 INFO L93 Difference]: Finished difference Result 658 states and 818 transitions. [2021-12-22 20:25:15,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 20:25:15,420 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 658 states and 818 transitions. [2021-12-22 20:25:15,423 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 479 [2021-12-22 20:25:15,425 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 658 states to 658 states and 818 transitions. [2021-12-22 20:25:15,426 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 658 [2021-12-22 20:25:15,426 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 658 [2021-12-22 20:25:15,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 658 states and 818 transitions. [2021-12-22 20:25:15,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 20:25:15,427 INFO L681 BuchiCegarLoop]: Abstraction has 658 states and 818 transitions. [2021-12-22 20:25:15,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states and 818 transitions. [2021-12-22 20:25:15,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 365. [2021-12-22 20:25:15,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 365 states have (on average 1.2356164383561643) internal successors, (451), 364 states have internal predecessors, (451), 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) [2021-12-22 20:25:15,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 451 transitions. [2021-12-22 20:25:15,438 INFO L704 BuchiCegarLoop]: Abstraction has 365 states and 451 transitions. [2021-12-22 20:25:15,438 INFO L587 BuchiCegarLoop]: Abstraction has 365 states and 451 transitions. [2021-12-22 20:25:15,438 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-22 20:25:15,438 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 365 states and 451 transitions. [2021-12-22 20:25:15,440 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 260 [2021-12-22 20:25:15,440 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 20:25:15,440 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 20:25:15,441 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 20:25:15,441 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 20:25:15,442 INFO L791 eck$LassoCheckResult]: Stem: 2803#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(3, 5);call write~init~int(79, 5, 0, 1);call write~init~int(110, 5, 1, 1);call write~init~int(0, 5, 2, 1);call #Ultimate.allocInit(4, 6);call write~init~int(79, 6, 0, 1);call write~init~int(102, 6, 1, 1);call write~init~int(102, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(7, 7);call write~init~int(44, 7, 0, 1);call write~init~int(80, 7, 1, 1);call write~init~int(117, 7, 2, 1);call write~init~int(109, 7, 3, 1);call write~init~int(112, 7, 4, 1);call write~init~int(58, 7, 5, 1);call write~init~int(0, 7, 6, 1);call #Ultimate.allocInit(3, 8);call write~init~int(79, 8, 0, 1);call write~init~int(110, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(4, 9);call write~init~int(79, 9, 0, 1);call write~init~int(102, 9, 1, 1);call write~init~int(102, 9, 2, 1);call write~init~int(0, 9, 3, 1);call #Ultimate.allocInit(3, 10);call write~init~int(41, 10, 0, 1);call write~init~int(32, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(2, 11);call write~init~int(10, 11, 0, 1);call write~init~int(0, 11, 1, 1);call #Ultimate.allocInit(13, 12);call #Ultimate.allocInit(7, 13);call write~init~int(44, 13, 0, 1);call write~init~int(77, 13, 1, 1);call write~init~int(101, 13, 2, 1);call write~init~int(116, 13, 3, 1);call write~init~int(104, 13, 4, 1);call write~init~int(58, 13, 5, 1);call write~init~int(0, 13, 6, 1);call #Ultimate.allocInit(5, 14);call write~init~int(67, 14, 0, 1);call write~init~int(82, 14, 1, 1);call write~init~int(73, 14, 2, 1);call write~init~int(84, 14, 3, 1);call write~init~int(0, 14, 4, 1);call #Ultimate.allocInit(3, 15);call write~init~int(79, 15, 0, 1);call write~init~int(75, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(41, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 2719#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret29#1, main_~retValue_acc~8#1, main_~tmp~5#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~5#1;assume { :begin_inline_select_helpers } true; 2720#L75 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2748#L68 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 2705#L83 main_#t~ret29#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~5#1 := main_#t~ret29#1;havoc main_#t~ret29#1; 2706#L548 assume 0 != main_~tmp~5#1;assume { :begin_inline_setup } true; 2664#L525 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet17#1, test_#t~nondet18#1, test_#t~nondet19#1, test_#t~nondet20#1, test_~splverifierCounter~0#1, test_~tmp~3#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~3#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 2665#L281-2 [2021-12-22 20:25:15,442 INFO L793 eck$LassoCheckResult]: Loop: 2665#L281-2 assume !false; 2960#L282 assume test_~splverifierCounter~0#1 < 4; 2786#L283 test_~tmp~3#1 := test_#t~nondet17#1;havoc test_#t~nondet17#1; 2765#L291 assume !(0 != test_~tmp~3#1); 2763#L291-2 test_~tmp___0~1#1 := test_#t~nondet18#1;havoc test_#t~nondet18#1; 2764#L301 assume !(0 != test_~tmp___0~1#1); 2709#L301-2 test_~tmp___2~0#1 := test_#t~nondet19#1;havoc test_#t~nondet19#1; 2710#L311 assume 0 != test_~tmp___2~0#1; 2673#L317-2 assume { :begin_inline_timeShift } true; 2697#L105 assume !(0 != ~pumpRunning~0); 2698#L105-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret5#1, processEnvironment_~tmp~0#1;havoc processEnvironment_~tmp~0#1; 2723#L137 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret16#1, isHighWaterLevel_~retValue_acc~4#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~4#1;havoc isHighWaterLevel_~tmp~2#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~7#1;havoc isHighWaterSensorDry_~retValue_acc~7#1; 2669#L455 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~7#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~7#1; 2671#L460 isHighWaterLevel_#t~ret16#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~2#1 := isHighWaterLevel_#t~ret16#1;havoc isHighWaterLevel_#t~ret16#1; 3013#L257 assume 0 != isHighWaterLevel_~tmp~2#1;isHighWaterLevel_~tmp___0~0#1 := 0; 2989#L257-2 isHighWaterLevel_~retValue_acc~4#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~4#1; 2985#L263 processEnvironment_#t~ret5#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~0#1 := processEnvironment_#t~ret5#1;havoc processEnvironment_#t~ret5#1; 2981#L141 assume !(0 != processEnvironment_~tmp~0#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 2798#L129 assume { :end_inline_processEnvironment__wrappee__base } true; 2799#L137-1 assume { :end_inline_processEnvironment } true; 2752#L112-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret21#1, __utac_acc__Specification3_spec__1_#t~ret22#1, __utac_acc__Specification3_spec__1_#t~ret23#1, __utac_acc__Specification3_spec__1_~tmp~4#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~4#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;havoc isMethaneLevelCritical_~retValue_acc~5#1;isMethaneLevelCritical_~retValue_acc~5#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~5#1; 2753#L415-1 __utac_acc__Specification3_spec__1_#t~ret21#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~4#1 := __utac_acc__Specification3_spec__1_#t~ret21#1;havoc __utac_acc__Specification3_spec__1_#t~ret21#1; 2801#L347 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~4#1);assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~6#1;havoc getWaterLevel_~retValue_acc~6#1;getWaterLevel_~retValue_acc~6#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~6#1; 2711#L447 __utac_acc__Specification3_spec__1_#t~ret22#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification3_spec__1_~tmp___0~2#1 := __utac_acc__Specification3_spec__1_#t~ret22#1;havoc __utac_acc__Specification3_spec__1_#t~ret22#1; 2712#L353 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2#1); 2964#L353-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 2963#L122 assume { :end_inline_timeShift } true; 2665#L281-2 [2021-12-22 20:25:15,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:15,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 6 times [2021-12-22 20:25:15,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:15,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665348289] [2021-12-22 20:25:15,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:15,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:15,463 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:25:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:15,473 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:25:15,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:15,474 INFO L85 PathProgramCache]: Analyzing trace with hash -395717680, now seen corresponding path program 1 times [2021-12-22 20:25:15,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:15,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588559800] [2021-12-22 20:25:15,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:15,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:15,482 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:25:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:15,492 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:25:15,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:15,495 INFO L85 PathProgramCache]: Analyzing trace with hash -20429940, now seen corresponding path program 1 times [2021-12-22 20:25:15,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:15,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603890751] [2021-12-22 20:25:15,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:15,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:15,511 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:25:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:15,522 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:25:17,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.12 08:25:17 BoogieIcfgContainer [2021-12-22 20:25:17,775 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-22 20:25:17,775 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 20:25:17,775 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 20:25:17,776 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 20:25:17,776 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:25:14" (3/4) ... [2021-12-22 20:25:17,778 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-22 20:25:17,822 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 20:25:17,823 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 20:25:17,823 INFO L158 Benchmark]: Toolchain (without parser) took 4798.15ms. Allocated memory was 130.0MB in the beginning and 224.4MB in the end (delta: 94.4MB). Free memory was 106.5MB in the beginning and 113.1MB in the end (delta: -6.6MB). Peak memory consumption was 87.6MB. Max. memory is 16.1GB. [2021-12-22 20:25:17,823 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 88.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 20:25:17,824 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.89ms. Allocated memory is still 130.0MB. Free memory was 106.5MB in the beginning and 97.7MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 20:25:17,824 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.53ms. Allocated memory is still 130.0MB. Free memory was 97.7MB in the beginning and 94.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 20:25:17,824 INFO L158 Benchmark]: Boogie Preprocessor took 41.04ms. Allocated memory is still 130.0MB. Free memory was 94.7MB in the beginning and 92.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 20:25:17,824 INFO L158 Benchmark]: RCFGBuilder took 514.21ms. Allocated memory is still 130.0MB. Free memory was 92.7MB in the beginning and 73.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-22 20:25:17,825 INFO L158 Benchmark]: BuchiAutomizer took 3715.07ms. Allocated memory was 130.0MB in the beginning and 224.4MB in the end (delta: 94.4MB). Free memory was 73.8MB in the beginning and 115.2MB in the end (delta: -41.4MB). Peak memory consumption was 81.1MB. Max. memory is 16.1GB. [2021-12-22 20:25:17,825 INFO L158 Benchmark]: Witness Printer took 47.14ms. Allocated memory is still 224.4MB. Free memory was 115.2MB in the beginning and 113.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 20:25:17,826 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 88.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 403.89ms. Allocated memory is still 130.0MB. Free memory was 106.5MB in the beginning and 97.7MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.53ms. Allocated memory is still 130.0MB. Free memory was 97.7MB in the beginning and 94.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.04ms. Allocated memory is still 130.0MB. Free memory was 94.7MB in the beginning and 92.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 514.21ms. Allocated memory is still 130.0MB. Free memory was 92.7MB in the beginning and 73.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * BuchiAutomizer took 3715.07ms. Allocated memory was 130.0MB in the beginning and 224.4MB in the end (delta: 94.4MB). Free memory was 73.8MB in the beginning and 115.2MB in the end (delta: -41.4MB). Peak memory consumption was 81.1MB. Max. memory is 16.1GB. * Witness Printer took 47.14ms. Allocated memory is still 224.4MB. Free memory was 115.2MB in the beginning and 113.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (5 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.5 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 365 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 3.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 810 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 365 states and ocurred in iteration 5. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1987 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1987 mSDsluCounter, 2486 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1532 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 193 IncrementalHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 954 mSDtfsCounter, 193 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc2 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: 281]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {splverifierCounter=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2d3b1b=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@55e00b4a=0, NULL=0, head=0, tmp___0=0, pumpRunning=0, retValue_acc=0, NULL=1, retValue_acc=1, methaneLevelCritical=0, tmp=1, tmp___0=1, \result=0, tmp=0, retValue_acc=1, \result=1, retValue_acc=0, \result=1, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7f6b3b6b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@66c10d9a=29, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@542a64e3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1d47aab=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e572b96=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3b19922d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@d52def=0, tmp___2=29, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@63d34795=0, cleanupTimeShifts=4, tmp=0, tmp=1, \result=0, tmp=0, head=0, \result=1, retValue_acc=0, tmp___1=0, NULL=0, waterLevel=1, systemActive=1, \result=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 281]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L97] int pumpRunning = 0; [L98] int systemActive = 1; [L372] int waterLevel = 1; [L373] int methaneLevelCritical = 0; [L466] int cleanupTimeShifts = 4; [L731] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L539] int retValue_acc ; [L540] int tmp ; [L544] FCALL select_helpers() [L545] FCALL select_features() [L546] CALL, EXPR valid_product() [L79] int retValue_acc ; [L82] retValue_acc = 1 [L83] return (retValue_acc); [L546] RET, EXPR valid_product() [L546] tmp = valid_product() [L548] COND TRUE \read(tmp) [L550] FCALL setup() [L551] CALL runTest() [L533] CALL test() [L272] int splverifierCounter ; [L273] int tmp ; [L274] int tmp___0 ; [L275] int tmp___1 ; [L276] int tmp___2 ; [L279] splverifierCounter = 0 Loop: [L281] COND TRUE 1 [L283] COND TRUE splverifierCounter < 4 [L289] tmp = __VERIFIER_nondet_int() [L291] COND FALSE !(\read(tmp)) [L299] tmp___0 = __VERIFIER_nondet_int() [L301] COND FALSE !(\read(tmp___0)) [L309] tmp___2 = __VERIFIER_nondet_int() [L311] COND TRUE \read(tmp___2) [L324] CALL timeShift() [L105] COND FALSE !(\read(pumpRunning)) [L112] COND TRUE \read(systemActive) [L114] CALL processEnvironment() [L134] int tmp ; [L137] COND TRUE ! pumpRunning [L139] CALL, EXPR isHighWaterLevel() [L249] int retValue_acc ; [L250] int tmp ; [L251] int tmp___0 ; [L255] CALL, EXPR isHighWaterSensorDry() [L452] int retValue_acc ; [L455] COND TRUE waterLevel < 2 [L456] retValue_acc = 1 [L457] return (retValue_acc); [L255] RET, EXPR isHighWaterSensorDry() [L255] tmp = isHighWaterSensorDry() [L257] COND TRUE \read(tmp) [L258] tmp___0 = 0 [L262] retValue_acc = tmp___0 [L263] return (retValue_acc); [L139] RET, EXPR isHighWaterLevel() [L139] tmp = isHighWaterLevel() [L141] COND FALSE !(\read(tmp)) [L147] FCALL processEnvironment__wrappee__base() [L114] RET processEnvironment() [L120] CALL __utac_acc__Specification3_spec__1() [L339] int tmp ; [L340] int tmp___0 ; [L341] int tmp___1 ; [L345] CALL, EXPR isMethaneLevelCritical() [L411] int retValue_acc ; [L414] retValue_acc = methaneLevelCritical [L415] return (retValue_acc); [L345] RET, EXPR isMethaneLevelCritical() [L345] tmp = isMethaneLevelCritical() [L347] COND FALSE !(\read(tmp)) [L351] CALL, EXPR getWaterLevel() [L443] int retValue_acc ; [L446] retValue_acc = waterLevel [L447] return (retValue_acc); [L351] RET, EXPR getWaterLevel() [L351] tmp___0 = getWaterLevel() [L353] COND FALSE !(tmp___0 == 2) [L120] RET __utac_acc__Specification3_spec__1() [L324] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-22 20:25:17,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)