./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product54.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product54.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 cbcb1e9315abec7fabb6a689d6a1c811fb94154c71589df191460c14d014c3cb --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 22:34:36,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 22:34:36,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 22:34:36,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 22:34:36,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 22:34:36,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 22:34:36,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 22:34:36,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 22:34:36,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 22:34:36,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 22:34:36,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 22:34:36,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 22:34:36,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 22:34:36,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 22:34:36,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 22:34:36,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 22:34:36,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 22:34:36,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 22:34:36,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 22:34:36,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 22:34:36,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 22:34:36,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 22:34:36,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 22:34:36,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 22:34:36,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 22:34:36,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 22:34:36,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 22:34:36,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 22:34:36,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 22:34:36,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 22:34:36,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 22:34:36,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 22:34:36,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 22:34:36,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 22:34:36,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 22:34:36,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 22:34:36,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 22:34:36,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 22:34:36,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 22:34:36,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 22:34:36,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 22:34:36,587 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-21 22:34:36,605 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 22:34:36,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 22:34:36,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 22:34:36,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 22:34:36,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 22:34:36,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 22:34:36,607 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 22:34:36,608 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 22:34:36,608 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 22:34:36,608 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 22:34:36,608 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 22:34:36,608 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 22:34:36,609 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 22:34:36,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 22:34:36,609 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 22:34:36,609 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 22:34:36,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 22:34:36,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 22:34:36,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 22:34:36,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 22:34:36,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 22:34:36,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 22:34:36,611 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 22:34:36,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 22:34:36,611 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 22:34:36,611 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 22:34:36,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 22:34:36,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 22:34:36,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 22:34:36,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 22:34:36,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 22:34:36,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 22:34:36,613 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 22:34:36,613 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbcb1e9315abec7fabb6a689d6a1c811fb94154c71589df191460c14d014c3cb [2021-12-21 22:34:36,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 22:34:36,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 22:34:36,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 22:34:36,831 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 22:34:36,832 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 22:34:36,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product54.cil.c [2021-12-21 22:34:36,886 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a67e8ba9/b715b44f4e904cae8af906d60a7cef66/FLAG928f099f1 [2021-12-21 22:34:37,294 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 22:34:37,295 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product54.cil.c [2021-12-21 22:34:37,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a67e8ba9/b715b44f4e904cae8af906d60a7cef66/FLAG928f099f1 [2021-12-21 22:34:37,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a67e8ba9/b715b44f4e904cae8af906d60a7cef66 [2021-12-21 22:34:37,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 22:34:37,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 22:34:37,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 22:34:37,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 22:34:37,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 22:34:37,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:34:37" (1/1) ... [2021-12-21 22:34:37,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a0322b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:34:37, skipping insertion in model container [2021-12-21 22:34:37,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:34:37" (1/1) ... [2021-12-21 22:34:37,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 22:34:37,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 22:34:37,624 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product54.cil.c[4478,4491] [2021-12-21 22:34:37,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:34:37,713 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 22:34:37,745 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product54.cil.c[4478,4491] [2021-12-21 22:34:37,770 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:34:37,785 INFO L208 MainTranslator]: Completed translation [2021-12-21 22:34:37,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:34:37 WrapperNode [2021-12-21 22:34:37,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 22:34:37,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 22:34:37,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 22:34:37,791 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 22:34:37,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:34:37" (1/1) ... [2021-12-21 22:34:37,825 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:34:37" (1/1) ... [2021-12-21 22:34:37,871 INFO L137 Inliner]: procedures = 57, calls = 160, calls flagged for inlining = 57, calls inlined = 141, statements flattened = 1037 [2021-12-21 22:34:37,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 22:34:37,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 22:34:37,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 22:34:37,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 22:34:37,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:34:37" (1/1) ... [2021-12-21 22:34:37,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:34:37" (1/1) ... [2021-12-21 22:34:37,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:34:37" (1/1) ... [2021-12-21 22:34:37,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:34:37" (1/1) ... [2021-12-21 22:34:37,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:34:37" (1/1) ... [2021-12-21 22:34:37,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:34:37" (1/1) ... [2021-12-21 22:34:37,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:34:37" (1/1) ... [2021-12-21 22:34:37,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 22:34:37,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 22:34:37,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 22:34:37,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 22:34:37,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:34:37" (1/1) ... [2021-12-21 22:34:37,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:34:37,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:34:37,980 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) [2021-12-21 22:34:38,002 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 [2021-12-21 22:34:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 22:34:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 22:34:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 22:34:38,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 22:34:38,107 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 22:34:38,109 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 22:34:38,663 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 22:34:38,672 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 22:34:38,672 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 22:34:38,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:34:38 BoogieIcfgContainer [2021-12-21 22:34:38,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 22:34:38,678 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 22:34:38,678 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 22:34:38,681 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 22:34:38,681 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:34:38,682 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 10:34:37" (1/3) ... [2021-12-21 22:34:38,684 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@671d8008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:34:38, skipping insertion in model container [2021-12-21 22:34:38,684 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:34:38,684 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:34:37" (2/3) ... [2021-12-21 22:34:38,685 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@671d8008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:34:38, skipping insertion in model container [2021-12-21 22:34:38,685 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:34:38,685 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:34:38" (3/3) ... [2021-12-21 22:34:38,686 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product54.cil.c [2021-12-21 22:34:38,719 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 22:34:38,720 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 22:34:38,720 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 22:34:38,720 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 22:34:38,720 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 22:34:38,720 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 22:34:38,720 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 22:34:38,721 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 22:34:38,736 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 277 states, 276 states have (on average 1.3731884057971016) internal successors, (379), 276 states have internal predecessors, (379), 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) [2021-12-21 22:34:38,760 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 181 [2021-12-21 22:34:38,761 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:34:38,761 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:34:38,767 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:34:38,767 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:34:38,767 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 22:34:38,768 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 277 states, 276 states have (on average 1.3731884057971016) internal successors, (379), 276 states have internal predecessors, (379), 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) [2021-12-21 22:34:38,780 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 181 [2021-12-21 22:34:38,785 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:34:38,785 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:34:38,786 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:34:38,787 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:34:38,791 INFO L791 eck$LassoCheckResult]: Stem: 256#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(30, 9);call #Ultimate.allocInit(9, 10);call #Ultimate.allocInit(21, 11);call #Ultimate.allocInit(30, 12);call #Ultimate.allocInit(9, 13);call #Ultimate.allocInit(21, 14);call #Ultimate.allocInit(30, 15);call #Ultimate.allocInit(9, 16);call #Ultimate.allocInit(25, 17);call #Ultimate.allocInit(30, 18);call #Ultimate.allocInit(9, 19);call #Ultimate.allocInit(25, 20);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);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 186#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret9#1, main_~retValue_acc~4#1, main_~tmp~0#1;havoc main_~retValue_acc~4#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 179#L329true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 223#L322true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~6#1;havoc valid_product_~retValue_acc~6#1;valid_product_~retValue_acc~6#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~6#1; 213#L337true main_#t~ret9#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret9#1;havoc main_#t~ret9#1; 8#L249true assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 96#L222true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet37#1, test_#t~nondet38#1, test_#t~nondet39#1, test_#t~nondet40#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~1#1, test_~tmp___1~1#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___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 28#L719-2true [2021-12-21 22:34:38,797 INFO L793 eck$LassoCheckResult]: Loop: 28#L719-2true assume !false; 34#L720true assume test_~splverifierCounter~0#1 < 4; 95#L721true test_~tmp~5#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 180#L729true assume !(0 != test_~tmp~5#1); 100#L729-2true test_~tmp___0~1#1 := test_#t~nondet38#1;havoc test_#t~nondet38#1; 3#L739true assume !(0 != test_~tmp___0~1#1); 248#L739-2true test_~tmp___2~0#1 := test_#t~nondet39#1;havoc test_#t~nondet39#1; 153#L749true assume !(0 != test_~tmp___2~0#1);test_~tmp___1~1#1 := test_#t~nondet40#1;havoc test_#t~nondet40#1; 61#L757true assume 0 != test_~tmp___1~1#1; 196#L757-2true assume { :begin_inline_timeShift } true; 269#L785true assume !(0 != ~pumpRunning~0); 114#L785-2true assume !(0 != ~systemActive~0); 69#L792-1true assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret10#1, __utac_acc__Specification3_spec__1_#t~ret11#1, __utac_acc__Specification3_spec__1_#t~ret12#1, __utac_acc__Specification3_spec__1_~tmp~1#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~1#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 166#L101-1true __utac_acc__Specification3_spec__1_#t~ret10#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~1#1 := __utac_acc__Specification3_spec__1_#t~ret10#1;havoc __utac_acc__Specification3_spec__1_#t~ret10#1; 152#L282true assume 0 != __utac_acc__Specification3_spec__1_~tmp~1#1; 203#L288-1true assume { :end_inline___utac_acc__Specification3_spec__1 } true; 191#L802true assume { :end_inline_timeShift } true; 28#L719-2true [2021-12-21 22:34:38,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:34:38,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 1 times [2021-12-21 22:34:38,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:34:38,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565962678] [2021-12-21 22:34:38,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:34:38,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:34:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:34:38,908 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:34:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:34:38,976 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:34:38,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:34:38,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1150963156, now seen corresponding path program 1 times [2021-12-21 22:34:38,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:34:38,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578577720] [2021-12-21 22:34:38,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:34:38,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:34:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:34:38,988 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:34:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:34:38,994 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:34:38,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:34:38,997 INFO L85 PathProgramCache]: Analyzing trace with hash 219281552, now seen corresponding path program 1 times [2021-12-21 22:34:38,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:34:38,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971983568] [2021-12-21 22:34:38,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:34:38,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:34:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:34:39,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:34:39,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:34:39,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971983568] [2021-12-21 22:34:39,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971983568] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:34:39,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:34:39,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 22:34:39,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040444765] [2021-12-21 22:34:39,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:34:39,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:34:39,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 22:34:39,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-21 22:34:39,291 INFO L87 Difference]: Start difference. First operand has 277 states, 276 states have (on average 1.3731884057971016) internal successors, (379), 276 states have internal predecessors, (379), 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 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-12-21 22:34:39,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:34:39,387 INFO L93 Difference]: Finished difference Result 274 states and 365 transitions. [2021-12-21 22:34:39,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 22:34:39,392 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 274 states and 365 transitions. [2021-12-21 22:34:39,396 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 177 [2021-12-21 22:34:39,401 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 274 states to 264 states and 355 transitions. [2021-12-21 22:34:39,401 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 264 [2021-12-21 22:34:39,402 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 264 [2021-12-21 22:34:39,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 264 states and 355 transitions. [2021-12-21 22:34:39,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:34:39,404 INFO L681 BuchiCegarLoop]: Abstraction has 264 states and 355 transitions. [2021-12-21 22:34:39,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states and 355 transitions. [2021-12-21 22:34:39,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2021-12-21 22:34:39,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 264 states have (on average 1.3446969696969697) internal successors, (355), 263 states have internal predecessors, (355), 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) [2021-12-21 22:34:39,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 355 transitions. [2021-12-21 22:34:39,451 INFO L704 BuchiCegarLoop]: Abstraction has 264 states and 355 transitions. [2021-12-21 22:34:39,451 INFO L587 BuchiCegarLoop]: Abstraction has 264 states and 355 transitions. [2021-12-21 22:34:39,451 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-21 22:34:39,451 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 264 states and 355 transitions. [2021-12-21 22:34:39,453 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 177 [2021-12-21 22:34:39,453 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:34:39,453 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:34:39,454 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:34:39,454 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] [2021-12-21 22:34:39,454 INFO L791 eck$LassoCheckResult]: Stem: 831#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(30, 9);call #Ultimate.allocInit(9, 10);call #Ultimate.allocInit(21, 11);call #Ultimate.allocInit(30, 12);call #Ultimate.allocInit(9, 13);call #Ultimate.allocInit(21, 14);call #Ultimate.allocInit(30, 15);call #Ultimate.allocInit(9, 16);call #Ultimate.allocInit(25, 17);call #Ultimate.allocInit(30, 18);call #Ultimate.allocInit(9, 19);call #Ultimate.allocInit(25, 20);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);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 804#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret9#1, main_~retValue_acc~4#1, main_~tmp~0#1;havoc main_~retValue_acc~4#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 800#L329 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 801#L322 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~6#1;havoc valid_product_~retValue_acc~6#1;valid_product_~retValue_acc~6#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~6#1; 817#L337 main_#t~ret9#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret9#1;havoc main_#t~ret9#1; 578#L249 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 579#L222 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet37#1, test_#t~nondet38#1, test_#t~nondet39#1, test_#t~nondet40#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~1#1, test_~tmp___1~1#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___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 616#L719-2 [2021-12-21 22:34:39,455 INFO L793 eck$LassoCheckResult]: Loop: 616#L719-2 assume !false; 617#L720 assume test_~splverifierCounter~0#1 < 4; 628#L721 test_~tmp~5#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 727#L729 assume !(0 != test_~tmp~5#1); 731#L729-2 test_~tmp___0~1#1 := test_#t~nondet38#1;havoc test_#t~nondet38#1; 569#L739 assume !(0 != test_~tmp___0~1#1); 571#L739-2 test_~tmp___2~0#1 := test_#t~nondet39#1;havoc test_#t~nondet39#1; 785#L749 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~1#1 := test_#t~nondet40#1;havoc test_#t~nondet40#1; 679#L757 assume 0 != test_~tmp___1~1#1; 670#L757-2 assume { :begin_inline_timeShift } true; 812#L785 assume !(0 != ~pumpRunning~0); 749#L785-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret43#1, processEnvironment_~tmp~8#1;havoc processEnvironment_~tmp~8#1; 671#L869 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~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 672#L101 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; 764#L913 processEnvironment_#t~ret43#1 := isMethaneAlarm_#res#1;assume { :end_inline_isMethaneAlarm } true;processEnvironment_~tmp~8#1 := processEnvironment_#t~ret43#1;havoc processEnvironment_#t~ret43#1; 653#L873 assume 0 != processEnvironment_~tmp~8#1;assume { :begin_inline_deactivatePump } true;~pumpRunning~0 := 0; 654#L903 assume { :end_inline_deactivatePump } true; 619#L869-1 assume { :end_inline_processEnvironment } true; 692#L792-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret10#1, __utac_acc__Specification3_spec__1_#t~ret11#1, __utac_acc__Specification3_spec__1_#t~ret12#1, __utac_acc__Specification3_spec__1_~tmp~1#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~1#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 693#L101-1 __utac_acc__Specification3_spec__1_#t~ret10#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~1#1 := __utac_acc__Specification3_spec__1_#t~ret10#1;havoc __utac_acc__Specification3_spec__1_#t~ret10#1; 783#L282 assume 0 != __utac_acc__Specification3_spec__1_~tmp~1#1; 624#L288-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 809#L802 assume { :end_inline_timeShift } true; 616#L719-2 [2021-12-21 22:34:39,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:34:39,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 2 times [2021-12-21 22:34:39,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:34:39,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729847498] [2021-12-21 22:34:39,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:34:39,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:34:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:34:39,481 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:34:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:34:39,504 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:34:39,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:34:39,506 INFO L85 PathProgramCache]: Analyzing trace with hash 520265629, now seen corresponding path program 1 times [2021-12-21 22:34:39,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:34:39,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136842514] [2021-12-21 22:34:39,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:34:39,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:34:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:34:39,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:34:39,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:34:39,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136842514] [2021-12-21 22:34:39,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136842514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:34:39,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:34:39,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 22:34:39,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613429631] [2021-12-21 22:34:39,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:34:39,537 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-21 22:34:39,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:34:39,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 22:34:39,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 22:34:39,538 INFO L87 Difference]: Start difference. First operand 264 states and 355 transitions. cyclomatic complexity: 93 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) [2021-12-21 22:34:39,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:34:39,646 INFO L93 Difference]: Finished difference Result 281 states and 358 transitions. [2021-12-21 22:34:39,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 22:34:39,647 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 281 states and 358 transitions. [2021-12-21 22:34:39,650 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 194 [2021-12-21 22:34:39,656 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 281 states to 281 states and 358 transitions. [2021-12-21 22:34:39,656 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 281 [2021-12-21 22:34:39,658 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 281 [2021-12-21 22:34:39,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 281 states and 358 transitions. [2021-12-21 22:34:39,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:34:39,668 INFO L681 BuchiCegarLoop]: Abstraction has 281 states and 358 transitions. [2021-12-21 22:34:39,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states and 358 transitions. [2021-12-21 22:34:39,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2021-12-21 22:34:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 281 states have (on average 1.2740213523131672) internal successors, (358), 280 states have internal predecessors, (358), 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) [2021-12-21 22:34:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 358 transitions. [2021-12-21 22:34:39,681 INFO L704 BuchiCegarLoop]: Abstraction has 281 states and 358 transitions. [2021-12-21 22:34:39,681 INFO L587 BuchiCegarLoop]: Abstraction has 281 states and 358 transitions. [2021-12-21 22:34:39,681 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-21 22:34:39,681 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 281 states and 358 transitions. [2021-12-21 22:34:39,683 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 194 [2021-12-21 22:34:39,683 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:34:39,684 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:34:39,685 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:34:39,686 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] [2021-12-21 22:34:39,686 INFO L791 eck$LassoCheckResult]: Stem: 1337#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(30, 9);call #Ultimate.allocInit(9, 10);call #Ultimate.allocInit(21, 11);call #Ultimate.allocInit(30, 12);call #Ultimate.allocInit(9, 13);call #Ultimate.allocInit(21, 14);call #Ultimate.allocInit(30, 15);call #Ultimate.allocInit(9, 16);call #Ultimate.allocInit(25, 17);call #Ultimate.allocInit(30, 18);call #Ultimate.allocInit(9, 19);call #Ultimate.allocInit(25, 20);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);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1313#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret9#1, main_~retValue_acc~4#1, main_~tmp~0#1;havoc main_~retValue_acc~4#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 1308#L329 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1309#L322 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~6#1;havoc valid_product_~retValue_acc~6#1;valid_product_~retValue_acc~6#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~6#1; 1324#L337 main_#t~ret9#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret9#1;havoc main_#t~ret9#1; 1129#L249 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 1130#L222 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet37#1, test_#t~nondet38#1, test_#t~nondet39#1, test_#t~nondet40#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~1#1, test_~tmp___1~1#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___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1157#L719-2 [2021-12-21 22:34:39,687 INFO L793 eck$LassoCheckResult]: Loop: 1157#L719-2 assume !false; 1158#L720 assume test_~splverifierCounter~0#1 < 4; 1166#L721 test_~tmp~5#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 1247#L729 assume !(0 != test_~tmp~5#1); 1255#L729-2 test_~tmp___0~1#1 := test_#t~nondet38#1;havoc test_#t~nondet38#1; 1120#L739 assume !(0 != test_~tmp___0~1#1); 1122#L739-2 test_~tmp___2~0#1 := test_#t~nondet39#1;havoc test_#t~nondet39#1; 1296#L749 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~1#1 := test_#t~nondet40#1;havoc test_#t~nondet40#1; 1204#L757 assume 0 != test_~tmp___1~1#1; 1196#L757-2 assume { :begin_inline_timeShift } true; 1319#L785 assume !(0 != ~pumpRunning~0); 1269#L785-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret43#1, processEnvironment_~tmp~8#1;havoc processEnvironment_~tmp~8#1; 1197#L869 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__lowWaterSensor } true;havoc processEnvironment__wrappee__lowWaterSensor_#t~ret42#1, processEnvironment__wrappee__lowWaterSensor_~tmp~7#1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~7#1; 1198#L843-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret41#1, processEnvironment__wrappee__highWaterSensor_~tmp~6#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6#1; 1153#L817-6 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~9#1, isHighWaterLevel_~tmp___0~2#1;havoc isHighWaterLevel_~retValue_acc~12#1;havoc isHighWaterLevel_~tmp~9#1;havoc isHighWaterLevel_~tmp___0~2#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 1154#L141-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 1234#L146-3 isHighWaterLevel_#t~ret53#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~9#1 := isHighWaterLevel_#t~ret53#1;havoc isHighWaterLevel_#t~ret53#1; 1235#L971-9 assume 0 != isHighWaterLevel_~tmp~9#1;isHighWaterLevel_~tmp___0~2#1 := 0; 1245#L971-11 isHighWaterLevel_~retValue_acc~12#1 := isHighWaterLevel_~tmp___0~2#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~12#1; 1246#L977-3 processEnvironment__wrappee__highWaterSensor_#t~ret41#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~6#1 := processEnvironment__wrappee__highWaterSensor_#t~ret41#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret41#1; 1323#L821-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1248#L809-6 assume { :end_inline_processEnvironment__wrappee__base } true; 1149#L817-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 1150#L843-3 assume { :end_inline_processEnvironment__wrappee__lowWaterSensor } true; 1160#L869-1 assume { :end_inline_processEnvironment } true; 1217#L792-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret10#1, __utac_acc__Specification3_spec__1_#t~ret11#1, __utac_acc__Specification3_spec__1_#t~ret12#1, __utac_acc__Specification3_spec__1_~tmp~1#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~1#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 1218#L101-1 __utac_acc__Specification3_spec__1_#t~ret10#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~1#1 := __utac_acc__Specification3_spec__1_#t~ret10#1;havoc __utac_acc__Specification3_spec__1_#t~ret10#1; 1294#L282 assume 0 != __utac_acc__Specification3_spec__1_~tmp~1#1; 1164#L288-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 1317#L802 assume { :end_inline_timeShift } true; 1157#L719-2 [2021-12-21 22:34:39,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:34:39,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 3 times [2021-12-21 22:34:39,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:34:39,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973800564] [2021-12-21 22:34:39,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:34:39,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:34:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:34:39,715 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:34:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:34:39,729 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:34:39,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:34:39,729 INFO L85 PathProgramCache]: Analyzing trace with hash -430221248, now seen corresponding path program 1 times [2021-12-21 22:34:39,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:34:39,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750456860] [2021-12-21 22:34:39,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:34:39,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:34:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:34:39,748 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:34:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:34:39,758 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:34:39,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:34:39,759 INFO L85 PathProgramCache]: Analyzing trace with hash -33030396, now seen corresponding path program 1 times [2021-12-21 22:34:39,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:34:39,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325934752] [2021-12-21 22:34:39,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:34:39,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:34:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:34:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:34:39,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:34:39,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325934752] [2021-12-21 22:34:39,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325934752] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:34:39,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:34:39,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 22:34:39,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993014794] [2021-12-21 22:34:39,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:34:40,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:34:40,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 22:34:40,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 22:34:40,044 INFO L87 Difference]: Start difference. First operand 281 states and 358 transitions. cyclomatic complexity: 79 Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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) [2021-12-21 22:34:40,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:34:40,175 INFO L93 Difference]: Finished difference Result 976 states and 1235 transitions. [2021-12-21 22:34:40,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 22:34:40,177 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 976 states and 1235 transitions. [2021-12-21 22:34:40,185 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 710 [2021-12-21 22:34:40,190 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 976 states to 976 states and 1235 transitions. [2021-12-21 22:34:40,190 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 976 [2021-12-21 22:34:40,191 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 976 [2021-12-21 22:34:40,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 976 states and 1235 transitions. [2021-12-21 22:34:40,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:34:40,193 INFO L681 BuchiCegarLoop]: Abstraction has 976 states and 1235 transitions. [2021-12-21 22:34:40,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states and 1235 transitions. [2021-12-21 22:34:40,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 555. [2021-12-21 22:34:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 555 states have (on average 1.263063063063063) internal successors, (701), 554 states have internal predecessors, (701), 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) [2021-12-21 22:34:40,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 701 transitions. [2021-12-21 22:34:40,222 INFO L704 BuchiCegarLoop]: Abstraction has 555 states and 701 transitions. [2021-12-21 22:34:40,222 INFO L587 BuchiCegarLoop]: Abstraction has 555 states and 701 transitions. [2021-12-21 22:34:40,222 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-21 22:34:40,222 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 555 states and 701 transitions. [2021-12-21 22:34:40,225 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 388 [2021-12-21 22:34:40,225 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:34:40,226 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:34:40,228 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:34:40,228 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, 1, 1] [2021-12-21 22:34:40,228 INFO L791 eck$LassoCheckResult]: Stem: 2628#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(30, 9);call #Ultimate.allocInit(9, 10);call #Ultimate.allocInit(21, 11);call #Ultimate.allocInit(30, 12);call #Ultimate.allocInit(9, 13);call #Ultimate.allocInit(21, 14);call #Ultimate.allocInit(30, 15);call #Ultimate.allocInit(9, 16);call #Ultimate.allocInit(25, 17);call #Ultimate.allocInit(30, 18);call #Ultimate.allocInit(9, 19);call #Ultimate.allocInit(25, 20);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);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 2601#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret9#1, main_~retValue_acc~4#1, main_~tmp~0#1;havoc main_~retValue_acc~4#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 2594#L329 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2595#L322 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~6#1;havoc valid_product_~retValue_acc~6#1;valid_product_~retValue_acc~6#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~6#1; 2613#L337 main_#t~ret9#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret9#1;havoc main_#t~ret9#1; 2404#L249 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 2405#L222 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet37#1, test_#t~nondet38#1, test_#t~nondet39#1, test_#t~nondet40#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~1#1, test_~tmp___1~1#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___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 2433#L719-2 [2021-12-21 22:34:40,228 INFO L793 eck$LassoCheckResult]: Loop: 2433#L719-2 assume !false; 2434#L720 assume test_~splverifierCounter~0#1 < 4; 2442#L721 test_~tmp~5#1 := test_#t~nondet37#1;havoc test_#t~nondet37#1; 2945#L729 assume !(0 != test_~tmp~5#1); 2943#L729-2 test_~tmp___0~1#1 := test_#t~nondet38#1;havoc test_#t~nondet38#1; 2395#L739 assume !(0 != test_~tmp___0~1#1); 2397#L739-2 test_~tmp___2~0#1 := test_#t~nondet39#1;havoc test_#t~nondet39#1; 2579#L749 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~1#1 := test_#t~nondet40#1;havoc test_#t~nondet40#1; 2481#L757 assume 0 != test_~tmp___1~1#1; 2472#L757-2 assume { :begin_inline_timeShift } true; 2607#L785 assume !(0 != ~pumpRunning~0); 2549#L785-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret43#1, processEnvironment_~tmp~8#1;havoc processEnvironment_~tmp~8#1; 2473#L869 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__lowWaterSensor } true;havoc processEnvironment__wrappee__lowWaterSensor_#t~ret42#1, processEnvironment__wrappee__lowWaterSensor_~tmp~7#1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~7#1; 2474#L843-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret41#1, processEnvironment__wrappee__highWaterSensor_~tmp~6#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6#1; 2429#L817-6 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~9#1, isHighWaterLevel_~tmp___0~2#1;havoc isHighWaterLevel_~retValue_acc~12#1;havoc isHighWaterLevel_~tmp~9#1;havoc isHighWaterLevel_~tmp___0~2#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 2430#L141-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 2636#L146-3 isHighWaterLevel_#t~ret53#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~9#1 := isHighWaterLevel_#t~ret53#1;havoc isHighWaterLevel_#t~ret53#1; 2561#L971-9 assume 0 != isHighWaterLevel_~tmp~9#1;isHighWaterLevel_~tmp___0~2#1 := 0; 2522#L971-11 isHighWaterLevel_~retValue_acc~12#1 := isHighWaterLevel_~tmp___0~2#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~12#1; 2523#L977-3 processEnvironment__wrappee__highWaterSensor_#t~ret41#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~6#1 := processEnvironment__wrappee__highWaterSensor_#t~ret41#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret41#1; 2612#L821-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 2526#L809-6 assume { :end_inline_processEnvironment__wrappee__base } true; 2425#L817-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 2426#L843-3 assume { :end_inline_processEnvironment__wrappee__lowWaterSensor } true; 2436#L869-1 assume { :end_inline_processEnvironment } true; 2494#L792-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret10#1, __utac_acc__Specification3_spec__1_#t~ret11#1, __utac_acc__Specification3_spec__1_#t~ret12#1, __utac_acc__Specification3_spec__1_~tmp~1#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~1#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 2495#L101-1 __utac_acc__Specification3_spec__1_#t~ret10#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~1#1 := __utac_acc__Specification3_spec__1_#t~ret10#1;havoc __utac_acc__Specification3_spec__1_#t~ret10#1; 2577#L282 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~1#1);assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~1#1;havoc getWaterLevel_~retValue_acc~1#1;getWaterLevel_~retValue_acc~1#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~1#1; 2578#L133 __utac_acc__Specification3_spec__1_#t~ret11#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification3_spec__1_~tmp___0~0#1 := __utac_acc__Specification3_spec__1_#t~ret11#1;havoc __utac_acc__Specification3_spec__1_#t~ret11#1; 2439#L288 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0#1); 2440#L288-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 2605#L802 assume { :end_inline_timeShift } true; 2433#L719-2 [2021-12-21 22:34:40,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:34:40,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 4 times [2021-12-21 22:34:40,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:34:40,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974278697] [2021-12-21 22:34:40,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:34:40,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:34:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:34:40,242 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:34:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:34:40,262 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:34:40,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:34:40,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1124501549, now seen corresponding path program 1 times [2021-12-21 22:34:40,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:34:40,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143063485] [2021-12-21 22:34:40,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:34:40,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:34:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:34:40,281 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:34:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:34:40,290 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:34:40,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:34:40,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1676182121, now seen corresponding path program 1 times [2021-12-21 22:34:40,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:34:40,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438739113] [2021-12-21 22:34:40,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:34:40,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:34:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:34:40,307 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:34:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:34:40,319 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:34:43,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.12 10:34:43 BoogieIcfgContainer [2021-12-21 22:34:43,135 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-21 22:34:43,136 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 22:34:43,136 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 22:34:43,136 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 22:34:43,137 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:34:38" (3/4) ... [2021-12-21 22:34:43,139 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-21 22:34:43,218 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 22:34:43,221 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 22:34:43,222 INFO L158 Benchmark]: Toolchain (without parser) took 5891.69ms. Allocated memory was 83.9MB in the beginning and 151.0MB in the end (delta: 67.1MB). Free memory was 52.0MB in the beginning and 113.1MB in the end (delta: -61.0MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2021-12-21 22:34:43,222 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory was 42.6MB in the beginning and 42.6MB in the end (delta: 40.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:34:43,225 INFO L158 Benchmark]: CACSL2BoogieTranslator took 458.26ms. Allocated memory is still 83.9MB. Free memory was 51.9MB in the beginning and 52.4MB in the end (delta: -509.0kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 22:34:43,225 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.04ms. Allocated memory is still 83.9MB. Free memory was 52.4MB in the beginning and 47.8MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-21 22:34:43,226 INFO L158 Benchmark]: Boogie Preprocessor took 75.39ms. Allocated memory is still 83.9MB. Free memory was 47.8MB in the beginning and 44.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-21 22:34:43,226 INFO L158 Benchmark]: RCFGBuilder took 725.37ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 44.7MB in the beginning and 61.7MB in the end (delta: -17.0MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2021-12-21 22:34:43,226 INFO L158 Benchmark]: BuchiAutomizer took 4457.60ms. Allocated memory was 100.7MB in the beginning and 151.0MB in the end (delta: 50.3MB). Free memory was 61.7MB in the beginning and 116.2MB in the end (delta: -54.5MB). Peak memory consumption was 63.9MB. Max. memory is 16.1GB. [2021-12-21 22:34:43,227 INFO L158 Benchmark]: Witness Printer took 85.66ms. Allocated memory is still 151.0MB. Free memory was 115.2MB in the beginning and 113.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 22:34:43,228 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory was 42.6MB in the beginning and 42.6MB in the end (delta: 40.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 458.26ms. Allocated memory is still 83.9MB. Free memory was 51.9MB in the beginning and 52.4MB in the end (delta: -509.0kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.04ms. Allocated memory is still 83.9MB. Free memory was 52.4MB in the beginning and 47.8MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.39ms. Allocated memory is still 83.9MB. Free memory was 47.8MB in the beginning and 44.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 725.37ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 44.7MB in the beginning and 61.7MB in the end (delta: -17.0MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. * BuchiAutomizer took 4457.60ms. Allocated memory was 100.7MB in the beginning and 151.0MB in the end (delta: 50.3MB). Free memory was 61.7MB in the beginning and 116.2MB in the end (delta: -54.5MB). Peak memory consumption was 63.9MB. Max. memory is 16.1GB. * Witness Printer took 85.66ms. Allocated memory is still 151.0MB. Free memory was 115.2MB in the beginning and 113.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 555 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.7s. Construction of modules took 0.1s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 421 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 555 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2726 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2726 mSDsluCounter, 2533 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1464 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 123 IncrementalHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 1069 mSDtfsCounter, 123 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 719]: 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, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3cbd8c85=0, tmp___0=0, retValue_acc=1, methaneLevelCritical=0, tmp___0=1, tmp=0, retValue_acc=1, \result=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f1cbe71=0, retValue_acc=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@263e6c25=0, \result=1, \result=1, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@505ec1c9=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@738c2587=0, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5e1d553f=29, tmp___2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2d78505f=0, cleanupTimeShifts=4, tmp=1, \result=0, head=0, \result=1, tmp___1=29, NULL=0, waterLevel=1, systemActive=1, tmp=0, retValue_acc=1, tmp=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7dc2d871=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@294f61a1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4480c5c2=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e6fe2a0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@c350e5f=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 719]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L58] int waterLevel = 1; [L59] int methaneLevelCritical = 0; [L161] int cleanupTimeShifts = 4; [L511] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L778] int pumpRunning = 0; [L779] int systemActive = 1; [L240] int retValue_acc ; [L241] int tmp ; [L245] FCALL select_helpers() [L246] FCALL select_features() [L247] CALL, EXPR valid_product() [L333] int retValue_acc ; [L336] retValue_acc = 1 [L337] return (retValue_acc); [L247] RET, EXPR valid_product() [L247] tmp = valid_product() [L249] COND TRUE \read(tmp) [L251] FCALL setup() [L252] CALL runTest() [L231] CALL test() [L710] int splverifierCounter ; [L711] int tmp ; [L712] int tmp___0 ; [L713] int tmp___1 ; [L714] int tmp___2 ; [L717] splverifierCounter = 0 Loop: [L719] COND TRUE 1 [L721] COND TRUE splverifierCounter < 4 [L727] tmp = __VERIFIER_nondet_int() [L729] COND FALSE !(\read(tmp)) [L737] tmp___0 = __VERIFIER_nondet_int() [L739] COND FALSE !(\read(tmp___0)) [L747] tmp___2 = __VERIFIER_nondet_int() [L749] COND FALSE !(\read(tmp___2)) [L755] tmp___1 = __VERIFIER_nondet_int() [L757] COND TRUE \read(tmp___1) [L764] CALL timeShift() [L785] COND FALSE !(\read(pumpRunning)) [L792] COND TRUE \read(systemActive) [L794] CALL processEnvironment() [L866] int tmp ; [L869] COND FALSE !(\read(pumpRunning)) [L884] CALL processEnvironment__wrappee__lowWaterSensor() [L840] int tmp ; [L843] COND FALSE !(\read(pumpRunning)) [L858] CALL processEnvironment__wrappee__highWaterSensor() [L814] int tmp ; [L817] COND TRUE ! pumpRunning [L819] CALL, EXPR isHighWaterLevel() [L963] int retValue_acc ; [L964] int tmp ; [L965] int tmp___0 ; [L969] CALL, EXPR isHighWaterSensorDry() [L138] int retValue_acc ; [L141] COND TRUE waterLevel < 2 [L142] retValue_acc = 1 [L143] return (retValue_acc); [L969] RET, EXPR isHighWaterSensorDry() [L969] tmp = isHighWaterSensorDry() [L971] COND TRUE \read(tmp) [L972] tmp___0 = 0 [L976] retValue_acc = tmp___0 [L977] return (retValue_acc); [L819] RET, EXPR isHighWaterLevel() [L819] tmp = isHighWaterLevel() [L821] COND FALSE !(\read(tmp)) [L827] FCALL processEnvironment__wrappee__base() [L858] RET processEnvironment__wrappee__highWaterSensor() [L884] RET processEnvironment__wrappee__lowWaterSensor() [L794] RET processEnvironment() [L800] CALL __utac_acc__Specification3_spec__1() [L274] int tmp ; [L275] int tmp___0 ; [L276] int tmp___1 ; [L280] CALL, EXPR isMethaneLevelCritical() [L97] int retValue_acc ; [L100] retValue_acc = methaneLevelCritical [L101] return (retValue_acc); [L280] RET, EXPR isMethaneLevelCritical() [L280] tmp = isMethaneLevelCritical() [L282] COND FALSE !(\read(tmp)) [L286] CALL, EXPR getWaterLevel() [L129] int retValue_acc ; [L132] retValue_acc = waterLevel [L133] return (retValue_acc); [L286] RET, EXPR getWaterLevel() [L286] tmp___0 = getWaterLevel() [L288] COND FALSE !(tmp___0 == 2) [L800] RET __utac_acc__Specification3_spec__1() [L764] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-21 22:34:43,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)