./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product62.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec2_product62.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 d8e8f57de68bd156f96d4553940231369dc2e0f8c550ee7a61d6446a6f476745 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 09:40:19,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 09:40:19,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 09:40:19,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 09:40:19,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 09:40:19,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 09:40:19,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 09:40:19,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 09:40:19,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 09:40:19,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 09:40:19,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 09:40:19,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 09:40:19,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 09:40:19,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 09:40:19,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 09:40:19,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 09:40:19,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 09:40:19,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 09:40:19,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 09:40:19,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 09:40:19,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 09:40:19,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 09:40:19,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 09:40:19,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 09:40:19,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 09:40:19,498 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 09:40:19,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 09:40:19,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 09:40:19,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 09:40:19,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 09:40:19,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 09:40:19,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 09:40:19,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 09:40:19,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 09:40:19,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 09:40:19,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 09:40:19,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 09:40:19,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 09:40:19,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 09:40:19,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 09:40:19,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 09:40:19,510 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-28 09:40:19,547 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 09:40:19,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 09:40:19,548 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 09:40:19,548 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 09:40:19,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 09:40:19,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 09:40:19,551 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 09:40:19,551 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-28 09:40:19,551 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-28 09:40:19,551 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-28 09:40:19,552 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-28 09:40:19,552 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-28 09:40:19,553 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-28 09:40:19,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 09:40:19,553 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 09:40:19,553 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 09:40:19,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 09:40:19,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 09:40:19,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 09:40:19,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-28 09:40:19,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-28 09:40:19,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-28 09:40:19,554 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 09:40:19,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 09:40:19,555 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-28 09:40:19,555 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 09:40:19,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-28 09:40:19,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 09:40:19,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 09:40:19,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 09:40:19,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 09:40:19,557 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-28 09:40:19,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8e8f57de68bd156f96d4553940231369dc2e0f8c550ee7a61d6446a6f476745 [2021-12-28 09:40:19,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 09:40:19,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 09:40:19,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 09:40:19,917 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 09:40:19,918 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 09:40:19,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product62.cil.c [2021-12-28 09:40:19,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d6ce9dc6/a92801849b294ef79b67209e432e86b4/FLAG782b8e991 [2021-12-28 09:40:20,472 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 09:40:20,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product62.cil.c [2021-12-28 09:40:20,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d6ce9dc6/a92801849b294ef79b67209e432e86b4/FLAG782b8e991 [2021-12-28 09:40:20,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d6ce9dc6/a92801849b294ef79b67209e432e86b4 [2021-12-28 09:40:20,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 09:40:20,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 09:40:20,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 09:40:20,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 09:40:20,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 09:40:20,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:40:20" (1/1) ... [2021-12-28 09:40:20,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd16698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:20, skipping insertion in model container [2021-12-28 09:40:20,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:40:20" (1/1) ... [2021-12-28 09:40:20,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 09:40:21,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 09:40:21,309 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_spec2_product62.cil.c[12672,12685] [2021-12-28 09:40:21,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:40:21,369 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 09:40:21,438 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_spec2_product62.cil.c[12672,12685] [2021-12-28 09:40:21,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:40:21,493 INFO L208 MainTranslator]: Completed translation [2021-12-28 09:40:21,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:21 WrapperNode [2021-12-28 09:40:21,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 09:40:21,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 09:40:21,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 09:40:21,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 09:40:21,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:21" (1/1) ... [2021-12-28 09:40:21,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:21" (1/1) ... [2021-12-28 09:40:21,584 INFO L137 Inliner]: procedures = 59, calls = 162, calls flagged for inlining = 59, calls inlined = 175, statements flattened = 1272 [2021-12-28 09:40:21,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 09:40:21,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 09:40:21,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 09:40:21,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 09:40:21,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:21" (1/1) ... [2021-12-28 09:40:21,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:21" (1/1) ... [2021-12-28 09:40:21,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:21" (1/1) ... [2021-12-28 09:40:21,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:21" (1/1) ... [2021-12-28 09:40:21,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:21" (1/1) ... [2021-12-28 09:40:21,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:21" (1/1) ... [2021-12-28 09:40:21,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:21" (1/1) ... [2021-12-28 09:40:21,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 09:40:21,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 09:40:21,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 09:40:21,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 09:40:21,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:21" (1/1) ... [2021-12-28 09:40:21,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:40:21,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:40:21,693 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) [2021-12-28 09:40:21,706 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 [2021-12-28 09:40:21,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 09:40:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 09:40:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 09:40:21,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 09:40:21,795 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 09:40:21,796 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 09:40:22,388 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 09:40:22,398 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 09:40:22,398 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 09:40:22,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:40:22 BoogieIcfgContainer [2021-12-28 09:40:22,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 09:40:22,402 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-28 09:40:22,402 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-28 09:40:22,409 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-28 09:40:22,410 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:40:22,410 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.12 09:40:20" (1/3) ... [2021-12-28 09:40:22,411 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@652a4bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:40:22, skipping insertion in model container [2021-12-28 09:40:22,411 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:40:22,411 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:21" (2/3) ... [2021-12-28 09:40:22,411 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@652a4bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:40:22, skipping insertion in model container [2021-12-28 09:40:22,412 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:40:22,412 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:40:22" (3/3) ... [2021-12-28 09:40:22,413 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product62.cil.c [2021-12-28 09:40:22,464 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-28 09:40:22,464 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-28 09:40:22,464 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-28 09:40:22,464 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-28 09:40:22,465 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-28 09:40:22,465 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-28 09:40:22,465 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-28 09:40:22,465 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-28 09:40:22,493 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 323 states, 322 states have (on average 1.3571428571428572) internal successors, (437), 322 states have internal predecessors, (437), 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) [2021-12-28 09:40:22,541 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 211 [2021-12-28 09:40:22,544 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:40:22,544 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:40:22,552 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:22,552 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:22,552 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-28 09:40:22,553 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 323 states, 322 states have (on average 1.3571428571428572) internal successors, (437), 322 states have internal predecessors, (437), 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) [2021-12-28 09:40:22,561 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 211 [2021-12-28 09:40:22,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:40:22,561 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:40:22,562 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:22,562 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:22,572 INFO L791 eck$LassoCheckResult]: Stem: 300#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(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 195#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret27#1, main_~retValue_acc~3#1, main_~tmp~3#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true; 179#L702true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 139#L695true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 72#L710true main_#t~ret27#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret27#1;havoc main_#t~ret27#1; 27#L508true assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 226#L479true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 52#L539true assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet36#1, test_#t~nondet37#1, test_#t~nondet38#1, test_#t~nondet39#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 235#L726-2true [2021-12-28 09:40:22,574 INFO L793 eck$LassoCheckResult]: Loop: 235#L726-2true assume !false; 166#L727true assume test_~splverifierCounter~0#1 < 4; 68#L728true test_~tmp~5#1 := test_#t~nondet36#1;havoc test_#t~nondet36#1; 192#L736true assume !(0 != test_~tmp~5#1); 204#L736-2true test_~tmp___0~1#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 93#L746true assume !(0 != test_~tmp___0~1#1); 247#L746-2true test_~tmp___2~0#1 := test_#t~nondet38#1;havoc test_#t~nondet38#1; 83#L756true assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet39#1;havoc test_#t~nondet39#1; 314#L764true assume 0 != test_~tmp___1~0#1; 98#L764-2true assume { :begin_inline_timeShift } true; 164#L792true assume !(0 != ~pumpRunning~0); 25#L792-2true assume !(0 != ~systemActive~0); 283#L799-1true assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret28#1, __utac_acc__Specification2_spec__2_#t~ret29#1, __utac_acc__Specification2_spec__2_~tmp~4#1, __utac_acc__Specification2_spec__2_~tmp___0~0#1;havoc __utac_acc__Specification2_spec__2_~tmp~4#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;isMethaneLevelCritical_~retValue_acc~4#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~4#1; 75#L620-5true __utac_acc__Specification2_spec__2_#t~ret28#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~4#1 := __utac_acc__Specification2_spec__2_#t~ret28#1;havoc __utac_acc__Specification2_spec__2_#t~ret28#1; 144#L550true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~4#1);~methAndRunningLastTime~0 := 0; 50#L550-1true assume { :end_inline___utac_acc__Specification2_spec__2 } true; 306#L809true assume { :end_inline_timeShift } true; 235#L726-2true [2021-12-28 09:40:22,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:22,583 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 1 times [2021-12-28 09:40:22,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:22,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380264955] [2021-12-28 09:40:22,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:22,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:22,733 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:22,782 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:40:22,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:22,785 INFO L85 PathProgramCache]: Analyzing trace with hash -645125942, now seen corresponding path program 1 times [2021-12-28 09:40:22,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:22,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101074458] [2021-12-28 09:40:22,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:22,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:22,814 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:22,823 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:40:22,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:22,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1381067519, now seen corresponding path program 1 times [2021-12-28 09:40:22,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:22,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052500041] [2021-12-28 09:40:22,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:22,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:40:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:40:22,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:40:22,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052500041] [2021-12-28 09:40:22,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052500041] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:40:22,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:40:22,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 09:40:22,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600230924] [2021-12-28 09:40:22,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:40:23,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:40:23,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 09:40:23,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 09:40:23,163 INFO L87 Difference]: Start difference. First operand has 323 states, 322 states have (on average 1.3571428571428572) internal successors, (437), 322 states have internal predecessors, (437), 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 4.166666666666667) 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) [2021-12-28 09:40:23,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:40:23,253 INFO L93 Difference]: Finished difference Result 320 states and 423 transitions. [2021-12-28 09:40:23,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 09:40:23,262 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 320 states and 423 transitions. [2021-12-28 09:40:23,272 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 207 [2021-12-28 09:40:23,278 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 320 states to 310 states and 413 transitions. [2021-12-28 09:40:23,278 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 310 [2021-12-28 09:40:23,285 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 310 [2021-12-28 09:40:23,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 310 states and 413 transitions. [2021-12-28 09:40:23,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:40:23,292 INFO L681 BuchiCegarLoop]: Abstraction has 310 states and 413 transitions. [2021-12-28 09:40:23,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states and 413 transitions. [2021-12-28 09:40:23,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2021-12-28 09:40:23,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 310 states have (on average 1.332258064516129) internal successors, (413), 309 states have internal predecessors, (413), 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) [2021-12-28 09:40:23,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 413 transitions. [2021-12-28 09:40:23,345 INFO L704 BuchiCegarLoop]: Abstraction has 310 states and 413 transitions. [2021-12-28 09:40:23,345 INFO L587 BuchiCegarLoop]: Abstraction has 310 states and 413 transitions. [2021-12-28 09:40:23,345 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-28 09:40:23,345 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 310 states and 413 transitions. [2021-12-28 09:40:23,352 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 207 [2021-12-28 09:40:23,353 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:40:23,353 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:40:23,353 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:23,354 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] [2021-12-28 09:40:23,354 INFO L791 eck$LassoCheckResult]: Stem: 967#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(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 922#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret27#1, main_~retValue_acc~3#1, main_~tmp~3#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true; 911#L702 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 873#L695 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 793#L710 main_#t~ret27#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret27#1;havoc main_#t~ret27#1; 713#L508 assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 714#L479 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 762#L539 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet36#1, test_#t~nondet37#1, test_#t~nondet38#1, test_#t~nondet39#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 763#L726-2 [2021-12-28 09:40:23,354 INFO L793 eck$LassoCheckResult]: Loop: 763#L726-2 assume !false; 898#L727 assume test_~splverifierCounter~0#1 < 4; 783#L728 test_~tmp~5#1 := test_#t~nondet36#1;havoc test_#t~nondet36#1; 784#L736 assume !(0 != test_~tmp~5#1); 920#L736-2 test_~tmp___0~1#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 827#L746 assume !(0 != test_~tmp___0~1#1); 775#L746-2 test_~tmp___2~0#1 := test_#t~nondet38#1;havoc test_#t~nondet38#1; 810#L756 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 811#L1029 assume { :end_inline_startSystem } true; 833#L764-2 assume { :begin_inline_timeShift } true; 834#L792 assume !(0 != ~pumpRunning~0); 709#L792-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret42#1, processEnvironment_~tmp~8#1;havoc processEnvironment_~tmp~8#1; 710#L876 assume 0 != ~pumpRunning~0;assume { :begin_inline_isMethaneAlarm } true;havoc isMethaneAlarm_#res#1;havoc isMethaneAlarm_#t~ret44#1, isMethaneAlarm_~retValue_acc~10#1;havoc isMethaneAlarm_~retValue_acc~10#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;isMethaneLevelCritical_~retValue_acc~4#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~4#1; 765#L620 isMethaneAlarm_#t~ret44#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;isMethaneAlarm_~retValue_acc~10#1 := isMethaneAlarm_#t~ret44#1;havoc isMethaneAlarm_#t~ret44#1;isMethaneAlarm_#res#1 := isMethaneAlarm_~retValue_acc~10#1; 766#L937 processEnvironment_#t~ret42#1 := isMethaneAlarm_#res#1;assume { :end_inline_isMethaneAlarm } true;processEnvironment_~tmp~8#1 := processEnvironment_#t~ret42#1;havoc processEnvironment_#t~ret42#1; 918#L880 assume 0 != processEnvironment_~tmp~8#1;assume { :begin_inline_deactivatePump } true;~pumpRunning~0 := 0; 893#L927 assume { :end_inline_deactivatePump } true; 841#L876-1 assume { :end_inline_processEnvironment } true; 842#L799-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret28#1, __utac_acc__Specification2_spec__2_#t~ret29#1, __utac_acc__Specification2_spec__2_~tmp~4#1, __utac_acc__Specification2_spec__2_~tmp___0~0#1;havoc __utac_acc__Specification2_spec__2_~tmp~4#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;isMethaneLevelCritical_~retValue_acc~4#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~4#1; 796#L620-5 __utac_acc__Specification2_spec__2_#t~ret28#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~4#1 := __utac_acc__Specification2_spec__2_#t~ret28#1;havoc __utac_acc__Specification2_spec__2_#t~ret28#1; 797#L550 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~4#1);~methAndRunningLastTime~0 := 0; 756#L550-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 757#L809 assume { :end_inline_timeShift } true; 763#L726-2 [2021-12-28 09:40:23,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:23,355 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 2 times [2021-12-28 09:40:23,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:23,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141444814] [2021-12-28 09:40:23,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:23,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:23,386 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:23,409 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:40:23,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:23,412 INFO L85 PathProgramCache]: Analyzing trace with hash 448837394, now seen corresponding path program 1 times [2021-12-28 09:40:23,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:23,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820534727] [2021-12-28 09:40:23,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:23,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:40:23,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:40:23,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:40:23,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820534727] [2021-12-28 09:40:23,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820534727] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:40:23,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:40:23,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:40:23,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118209355] [2021-12-28 09:40:23,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:40:23,439 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:40:23,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:40:23,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:40:23,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:40:23,440 INFO L87 Difference]: Start difference. First operand 310 states and 413 transitions. cyclomatic complexity: 105 Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2021-12-28 09:40:23,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:40:23,527 INFO L93 Difference]: Finished difference Result 321 states and 407 transitions. [2021-12-28 09:40:23,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:40:23,528 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 321 states and 407 transitions. [2021-12-28 09:40:23,532 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 220 [2021-12-28 09:40:23,536 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 321 states to 321 states and 407 transitions. [2021-12-28 09:40:23,536 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 321 [2021-12-28 09:40:23,537 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 321 [2021-12-28 09:40:23,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 321 states and 407 transitions. [2021-12-28 09:40:23,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:40:23,538 INFO L681 BuchiCegarLoop]: Abstraction has 321 states and 407 transitions. [2021-12-28 09:40:23,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states and 407 transitions. [2021-12-28 09:40:23,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2021-12-28 09:40:23,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 321 states have (on average 1.2679127725856698) internal successors, (407), 320 states have internal predecessors, (407), 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) [2021-12-28 09:40:23,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 407 transitions. [2021-12-28 09:40:23,554 INFO L704 BuchiCegarLoop]: Abstraction has 321 states and 407 transitions. [2021-12-28 09:40:23,554 INFO L587 BuchiCegarLoop]: Abstraction has 321 states and 407 transitions. [2021-12-28 09:40:23,555 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-28 09:40:23,555 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 321 states and 407 transitions. [2021-12-28 09:40:23,557 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 220 [2021-12-28 09:40:23,557 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:40:23,557 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:40:23,558 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:23,558 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, 1, 1, 1] [2021-12-28 09:40:23,559 INFO L791 eck$LassoCheckResult]: Stem: 1555#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(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1512#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret27#1, main_~retValue_acc~3#1, main_~tmp~3#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true; 1502#L702 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1468#L695 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 1400#L710 main_#t~ret27#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret27#1;havoc main_#t~ret27#1; 1339#L508 assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 1340#L479 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 1376#L539 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet36#1, test_#t~nondet37#1, test_#t~nondet38#1, test_#t~nondet39#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1377#L726-2 [2021-12-28 09:40:23,560 INFO L793 eck$LassoCheckResult]: Loop: 1377#L726-2 assume !false; 1493#L727 assume test_~splverifierCounter~0#1 < 4; 1391#L728 test_~tmp~5#1 := test_#t~nondet36#1;havoc test_#t~nondet36#1; 1392#L736 assume !(0 != test_~tmp~5#1); 1510#L736-2 test_~tmp___0~1#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 1426#L746 assume !(0 != test_~tmp___0~1#1); 1386#L746-2 test_~tmp___2~0#1 := test_#t~nondet38#1;havoc test_#t~nondet38#1; 1411#L756 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 1412#L1029 assume { :end_inline_startSystem } true; 1429#L764-2 assume { :begin_inline_timeShift } true; 1430#L792 assume !(0 != ~pumpRunning~0); 1335#L792-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret42#1, processEnvironment_~tmp~8#1;havoc processEnvironment_~tmp~8#1; 1336#L876 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret41#1, processEnvironment__wrappee__methaneQuery_~tmp~7#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~7#1; 1433#L850-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret40#1, processEnvironment__wrappee__highWaterSensor_~tmp~6#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6#1; 1548#L824-6 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret53#1, isHighWaterLevel_~retValue_acc~12#1, isHighWaterLevel_~tmp~10#1, isHighWaterLevel_~tmp___0~2#1;havoc isHighWaterLevel_~retValue_acc~12#1;havoc isHighWaterLevel_~tmp~10#1;havoc isHighWaterLevel_~tmp___0~2#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~6#1;havoc isHighWaterSensorDry_~retValue_acc~6#1; 1418#L660-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~6#1; 1419#L665-3 isHighWaterLevel_#t~ret53#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~10#1 := isHighWaterLevel_#t~ret53#1;havoc isHighWaterLevel_#t~ret53#1; 1497#L995-9 assume !(0 != isHighWaterLevel_~tmp~10#1);isHighWaterLevel_~tmp___0~2#1 := 1; 1364#L995-11 isHighWaterLevel_~retValue_acc~12#1 := isHighWaterLevel_~tmp___0~2#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~12#1; 1365#L1001-3 processEnvironment__wrappee__highWaterSensor_#t~ret40#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~6#1 := processEnvironment__wrappee__highWaterSensor_#t~ret40#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret40#1; 1407#L828-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1300#L816-6 assume { :end_inline_processEnvironment__wrappee__base } true; 1301#L824-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 1445#L850-3 assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; 1437#L876-1 assume { :end_inline_processEnvironment } true; 1438#L799-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret28#1, __utac_acc__Specification2_spec__2_#t~ret29#1, __utac_acc__Specification2_spec__2_~tmp~4#1, __utac_acc__Specification2_spec__2_~tmp___0~0#1;havoc __utac_acc__Specification2_spec__2_~tmp~4#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;isMethaneLevelCritical_~retValue_acc~4#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~4#1; 1401#L620-5 __utac_acc__Specification2_spec__2_#t~ret28#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~4#1 := __utac_acc__Specification2_spec__2_#t~ret28#1;havoc __utac_acc__Specification2_spec__2_#t~ret28#1; 1402#L550 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~4#1);~methAndRunningLastTime~0 := 0; 1371#L550-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 1372#L809 assume { :end_inline_timeShift } true; 1377#L726-2 [2021-12-28 09:40:23,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:23,560 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 3 times [2021-12-28 09:40:23,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:23,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915977748] [2021-12-28 09:40:23,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:23,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:23,571 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:23,591 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:40:23,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:23,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1565421667, now seen corresponding path program 1 times [2021-12-28 09:40:23,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:23,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049789736] [2021-12-28 09:40:23,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:23,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:40:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:40:23,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:40:23,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049789736] [2021-12-28 09:40:23,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049789736] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:40:23,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:40:23,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 09:40:23,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856520756] [2021-12-28 09:40:23,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:40:23,630 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:40:23,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:40:23,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 09:40:23,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 09:40:23,631 INFO L87 Difference]: Start difference. First operand 321 states and 407 transitions. cyclomatic complexity: 88 Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2021-12-28 09:40:23,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:40:23,760 INFO L93 Difference]: Finished difference Result 625 states and 779 transitions. [2021-12-28 09:40:23,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 09:40:23,761 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 625 states and 779 transitions. [2021-12-28 09:40:23,766 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 434 [2021-12-28 09:40:23,768 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 625 states to 625 states and 779 transitions. [2021-12-28 09:40:23,769 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 625 [2021-12-28 09:40:23,769 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 625 [2021-12-28 09:40:23,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 625 states and 779 transitions. [2021-12-28 09:40:23,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:40:23,770 INFO L681 BuchiCegarLoop]: Abstraction has 625 states and 779 transitions. [2021-12-28 09:40:23,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states and 779 transitions. [2021-12-28 09:40:23,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 339. [2021-12-28 09:40:23,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 339 states have (on average 1.2536873156342183) internal successors, (425), 338 states have internal predecessors, (425), 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) [2021-12-28 09:40:23,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 425 transitions. [2021-12-28 09:40:23,785 INFO L704 BuchiCegarLoop]: Abstraction has 339 states and 425 transitions. [2021-12-28 09:40:23,785 INFO L587 BuchiCegarLoop]: Abstraction has 339 states and 425 transitions. [2021-12-28 09:40:23,785 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-28 09:40:23,785 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 339 states and 425 transitions. [2021-12-28 09:40:23,787 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 232 [2021-12-28 09:40:23,787 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:40:23,787 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:40:23,787 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:23,787 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, 1, 1, 1] [2021-12-28 09:40:23,788 INFO L791 eck$LassoCheckResult]: Stem: 2526#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(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 2476#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret27#1, main_~retValue_acc~3#1, main_~tmp~3#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true; 2465#L702 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2429#L695 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 2358#L710 main_#t~ret27#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret27#1;havoc main_#t~ret27#1; 2295#L508 assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 2296#L479 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 2330#L539 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet36#1, test_#t~nondet37#1, test_#t~nondet38#1, test_#t~nondet39#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 2331#L726-2 [2021-12-28 09:40:23,788 INFO L793 eck$LassoCheckResult]: Loop: 2331#L726-2 assume !false; 2454#L727 assume test_~splverifierCounter~0#1 < 4; 2455#L728 test_~tmp~5#1 := test_#t~nondet36#1;havoc test_#t~nondet36#1; 2569#L736 assume !(0 != test_~tmp~5#1); 2481#L736-2 test_~tmp___0~1#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 2482#L746 assume !(0 != test_~tmp___0~1#1); 2506#L746-2 test_~tmp___2~0#1 := test_#t~nondet38#1;havoc test_#t~nondet38#1; 2369#L756 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 2370#L1029 assume { :end_inline_startSystem } true; 2390#L764-2 assume { :begin_inline_timeShift } true; 2391#L792 assume !(0 != ~pumpRunning~0); 2293#L792-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret42#1, processEnvironment_~tmp~8#1;havoc processEnvironment_~tmp~8#1; 2294#L876 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret41#1, processEnvironment__wrappee__methaneQuery_~tmp~7#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~7#1; 2397#L850-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret40#1, processEnvironment__wrappee__highWaterSensor_~tmp~6#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6#1; 2518#L824-6 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret53#1, isHighWaterLevel_~retValue_acc~12#1, isHighWaterLevel_~tmp~10#1, isHighWaterLevel_~tmp___0~2#1;havoc isHighWaterLevel_~retValue_acc~12#1;havoc isHighWaterLevel_~tmp~10#1;havoc isHighWaterLevel_~tmp___0~2#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~6#1;havoc isHighWaterSensorDry_~retValue_acc~6#1; 2377#L660-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~6#1; 2378#L665-3 isHighWaterLevel_#t~ret53#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~10#1 := isHighWaterLevel_#t~ret53#1;havoc isHighWaterLevel_#t~ret53#1; 2515#L995-9 assume 0 != isHighWaterLevel_~tmp~10#1;isHighWaterLevel_~tmp___0~2#1 := 0; 2320#L995-11 isHighWaterLevel_~retValue_acc~12#1 := isHighWaterLevel_~tmp___0~2#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~12#1; 2321#L1001-3 processEnvironment__wrappee__highWaterSensor_#t~ret40#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~6#1 := processEnvironment__wrappee__highWaterSensor_#t~ret40#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret40#1; 2365#L828-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 2256#L816-6 assume { :end_inline_processEnvironment__wrappee__base } true; 2257#L824-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 2406#L850-3 assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; 2398#L876-1 assume { :end_inline_processEnvironment } true; 2399#L799-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret28#1, __utac_acc__Specification2_spec__2_#t~ret29#1, __utac_acc__Specification2_spec__2_~tmp~4#1, __utac_acc__Specification2_spec__2_~tmp___0~0#1;havoc __utac_acc__Specification2_spec__2_~tmp~4#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;havoc isMethaneLevelCritical_~retValue_acc~4#1;isMethaneLevelCritical_~retValue_acc~4#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~4#1; 2359#L620-5 __utac_acc__Specification2_spec__2_#t~ret28#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~4#1 := __utac_acc__Specification2_spec__2_#t~ret28#1;havoc __utac_acc__Specification2_spec__2_#t~ret28#1; 2360#L550 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~4#1);~methAndRunningLastTime~0 := 0; 2328#L550-1 assume { :end_inline___utac_acc__Specification2_spec__2 } true; 2329#L809 assume { :end_inline_timeShift } true; 2331#L726-2 [2021-12-28 09:40:23,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:23,789 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 4 times [2021-12-28 09:40:23,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:23,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313101383] [2021-12-28 09:40:23,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:23,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:23,796 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:23,804 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:40:23,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:23,804 INFO L85 PathProgramCache]: Analyzing trace with hash -2142739615, now seen corresponding path program 1 times [2021-12-28 09:40:23,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:23,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826369574] [2021-12-28 09:40:23,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:23,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:23,810 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:23,815 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:40:23,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:23,816 INFO L85 PathProgramCache]: Analyzing trace with hash 186370186, now seen corresponding path program 1 times [2021-12-28 09:40:23,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:23,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42269413] [2021-12-28 09:40:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:23,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:23,825 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:23,836 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:40:26,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.12 09:40:26 BoogieIcfgContainer [2021-12-28 09:40:26,792 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-28 09:40:26,792 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 09:40:26,792 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 09:40:26,795 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 09:40:26,795 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:40:22" (3/4) ... [2021-12-28 09:40:26,798 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-28 09:40:26,841 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 09:40:26,841 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 09:40:26,842 INFO L158 Benchmark]: Toolchain (without parser) took 5866.70ms. Allocated memory was 56.6MB in the beginning and 100.7MB in the end (delta: 44.0MB). Free memory was 34.9MB in the beginning and 66.9MB in the end (delta: -32.1MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2021-12-28 09:40:26,842 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 56.6MB. Free memory was 39.1MB in the beginning and 39.1MB in the end (delta: 47.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:40:26,842 INFO L158 Benchmark]: CACSL2BoogieTranslator took 518.45ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 34.6MB in the beginning and 44.9MB in the end (delta: -10.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-28 09:40:26,843 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.98ms. Allocated memory is still 69.2MB. Free memory was 44.7MB in the beginning and 39.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-28 09:40:26,843 INFO L158 Benchmark]: Boogie Preprocessor took 62.51ms. Allocated memory is still 69.2MB. Free memory was 39.5MB in the beginning and 35.9MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-28 09:40:26,843 INFO L158 Benchmark]: RCFGBuilder took 752.59ms. Allocated memory is still 69.2MB. Free memory was 35.9MB in the beginning and 34.6MB in the end (delta: 1.3MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2021-12-28 09:40:26,844 INFO L158 Benchmark]: BuchiAutomizer took 4390.09ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 34.3MB in the beginning and 70.0MB in the end (delta: -35.7MB). Peak memory consumption was 42.5MB. Max. memory is 16.1GB. [2021-12-28 09:40:26,844 INFO L158 Benchmark]: Witness Printer took 48.92ms. Allocated memory is still 100.7MB. Free memory was 70.0MB in the beginning and 66.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 09:40:26,846 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 56.6MB. Free memory was 39.1MB in the beginning and 39.1MB in the end (delta: 47.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 518.45ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 34.6MB in the beginning and 44.9MB in the end (delta: -10.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.98ms. Allocated memory is still 69.2MB. Free memory was 44.7MB in the beginning and 39.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.51ms. Allocated memory is still 69.2MB. Free memory was 39.5MB in the beginning and 35.9MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 752.59ms. Allocated memory is still 69.2MB. Free memory was 35.9MB in the beginning and 34.6MB in the end (delta: 1.3MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 4390.09ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 34.3MB in the beginning and 70.0MB in the end (delta: -35.7MB). Peak memory consumption was 42.5MB. Max. memory is 16.1GB. * Witness Printer took 48.92ms. Allocated memory is still 100.7MB. Free memory was 70.0MB in the beginning and 66.9MB in the end (delta: 3.1MB). 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 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 339 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 286 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 339 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2422 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2422 mSDsluCounter, 1738 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 692 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 135 IncrementalHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 1046 mSDtfsCounter, 135 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 726]: 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, NULL=0, head=0, tmp___0=0, pumpRunning=0, retValue_acc=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69cb8ea9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@783626f6=0, tmp___0=0, tmp=0, tmp=0, methaneLevelCritical=0, retValue_acc=1, retValue_acc=0, tmp=0, retValue_acc=1, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@40b2d96=29, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a75f181=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3d6426f7=0, \result=1, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e10a593=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@28479df1=0, tmp___2=29, methAndRunningLastTime=0, tmp=1, cleanupTimeShifts=4, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4e6fcb58=0, head=0, tmp___1=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ae624a2=0, waterLevel=1, systemActive=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@106c85c2=0, tmp=0, tmp___0=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36281423=0, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 726]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L416] int cleanupTimeShifts = 4; [L533] int methAndRunningLastTime ; [L577] int waterLevel = 1; [L578] int methaneLevelCritical = 0; [L785] int pumpRunning = 0; [L786] int systemActive = 1; [L499] int retValue_acc ; [L500] int tmp ; [L504] FCALL select_helpers() [L505] FCALL select_features() [L506] CALL, EXPR valid_product() [L706] int retValue_acc ; [L709] retValue_acc = 1 [L710] return (retValue_acc); [L506] RET, EXPR valid_product() [L506] tmp = valid_product() [L508] COND TRUE \read(tmp) [L510] FCALL setup() [L511] CALL runTest() [L489] CALL __utac_acc__Specification2_spec__1() [L538] methAndRunningLastTime = 0 [L489] RET __utac_acc__Specification2_spec__1() [L490] CALL test() [L717] int splverifierCounter ; [L718] int tmp ; [L719] int tmp___0 ; [L720] int tmp___1 ; [L721] int tmp___2 ; [L724] splverifierCounter = 0 Loop: [L726] COND TRUE 1 [L728] COND TRUE splverifierCounter < 4 [L734] tmp = __VERIFIER_nondet_int() [L736] COND FALSE !(\read(tmp)) [L744] tmp___0 = __VERIFIER_nondet_int() [L746] COND FALSE !(\read(tmp___0)) [L754] tmp___2 = __VERIFIER_nondet_int() [L756] COND TRUE \read(tmp___2) [L758] CALL startSystem() [L1028] systemActive = 1 [L758] RET startSystem() [L771] CALL timeShift() [L792] COND FALSE !(\read(pumpRunning)) [L799] COND TRUE \read(systemActive) [L801] CALL processEnvironment() [L873] int tmp ; [L876] COND FALSE !(\read(pumpRunning)) [L891] CALL processEnvironment__wrappee__methaneQuery() [L847] int tmp ; [L850] COND FALSE !(\read(pumpRunning)) [L865] CALL processEnvironment__wrappee__highWaterSensor() [L821] int tmp ; [L824] COND TRUE ! pumpRunning [L826] CALL, EXPR isHighWaterLevel() [L987] int retValue_acc ; [L988] int tmp ; [L989] int tmp___0 ; [L993] CALL, EXPR isHighWaterSensorDry() [L657] int retValue_acc ; [L660] COND TRUE waterLevel < 2 [L661] retValue_acc = 1 [L662] return (retValue_acc); [L993] RET, EXPR isHighWaterSensorDry() [L993] tmp = isHighWaterSensorDry() [L995] COND TRUE \read(tmp) [L996] tmp___0 = 0 [L1000] retValue_acc = tmp___0 [L1001] return (retValue_acc); [L826] RET, EXPR isHighWaterLevel() [L826] tmp = isHighWaterLevel() [L828] COND FALSE !(\read(tmp)) [L834] FCALL processEnvironment__wrappee__base() [L865] RET processEnvironment__wrappee__highWaterSensor() [L891] RET processEnvironment__wrappee__methaneQuery() [L801] RET processEnvironment() [L807] CALL __utac_acc__Specification2_spec__2() [L543] int tmp ; [L544] int tmp___0 ; [L548] CALL, EXPR isMethaneLevelCritical() [L616] int retValue_acc ; [L619] retValue_acc = methaneLevelCritical [L620] return (retValue_acc); [L548] RET, EXPR isMethaneLevelCritical() [L548] tmp = isMethaneLevelCritical() [L550] COND FALSE !(\read(tmp)) [L566] methAndRunningLastTime = 0 [L807] RET __utac_acc__Specification2_spec__2() [L771] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-28 09:40:26,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with 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)