./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec2_product45.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 c46fa29909af104dc6d1a777f6e396bc5549f246 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Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 16:04:26,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:04:26,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:04:26,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:04:26,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:04:26,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:04:26,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:04:26,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:04:26,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:04:26,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:04:26,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:04:26,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:04:26,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:04:26,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:04:26,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:04:26,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:04:26,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:04:26,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:04:26,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:04:26,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:04:26,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:04:26,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:04:26,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:04:26,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:04:26,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:04:26,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:04:26,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:04:26,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:04:26,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:04:26,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:04:26,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:04:26,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:04:26,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:04:26,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:04:26,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:04:26,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:04:26,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:04:26,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:04:26,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:04:26,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:04:26,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:04:26,584 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:04:26,611 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:04:26,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:04:26,612 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:04:26,612 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:04:26,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:04:26,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:04:26,614 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:04:26,614 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:04:26,614 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:04:26,614 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:04:26,615 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:04:26,615 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:04:26,615 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:04:26,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:04:26,615 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:04:26,615 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:04:26,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:04:26,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:04:26,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:04:26,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:04:26,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:04:26,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:04:26,622 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:04:26,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:04:26,622 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:04:26,622 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:04:26,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:04:26,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:04:26,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:04:26,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:04:26,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:04:26,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:04:26,624 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:04:26,624 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c46fa29909af104dc6d1a777f6e396bc5549f246 [2021-08-27 16:04:26,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:04:26,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:04:26,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:04:26,842 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:04:26,853 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:04:26,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c [2021-08-27 16:04:26,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/906745807/85a519dcf1b34412aa1058f778aee1de/FLAG825a6e989 [2021-08-27 16:04:27,282 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:04:27,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c [2021-08-27 16:04:27,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/906745807/85a519dcf1b34412aa1058f778aee1de/FLAG825a6e989 [2021-08-27 16:04:27,312 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/906745807/85a519dcf1b34412aa1058f778aee1de [2021-08-27 16:04:27,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:04:27,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:04:27,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:04:27,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:04:27,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:04:27,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:04:27" (1/1) ... [2021-08-27 16:04:27,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23fecb2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:27, skipping insertion in model container [2021-08-27 16:04:27,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:04:27" (1/1) ... [2021-08-27 16:04:27,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:04:27,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:04:27,489 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c[10968,10981] [2021-08-27 16:04:27,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:04:27,543 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:04:27,585 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c[10968,10981] [2021-08-27 16:04:27,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:04:27,625 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:04:27,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:27 WrapperNode [2021-08-27 16:04:27,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:04:27,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:04:27,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:04:27,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:04:27,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:27" (1/1) ... [2021-08-27 16:04:27,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:27" (1/1) ... [2021-08-27 16:04:27,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:04:27,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:04:27,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:04:27,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:04:27,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:27" (1/1) ... [2021-08-27 16:04:27,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:27" (1/1) ... [2021-08-27 16:04:27,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:27" (1/1) ... [2021-08-27 16:04:27,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:27" (1/1) ... [2021-08-27 16:04:27,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:27" (1/1) ... [2021-08-27 16:04:27,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:27" (1/1) ... [2021-08-27 16:04:27,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:27" (1/1) ... [2021-08-27 16:04:27,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:04:27,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:04:27,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:04:27,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:04:27,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:27" (1/1) ... [2021-08-27 16:04:27,721 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:04:27,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:04:27,734 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) [2021-08-27 16:04:27,777 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 [2021-08-27 16:04:27,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:04:27,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:04:27,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:04:27,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:04:28,447 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:04:28,450 INFO L299 CfgBuilder]: Removed 194 assume(true) statements. [2021-08-27 16:04:28,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:04:28 BoogieIcfgContainer [2021-08-27 16:04:28,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:04:28,453 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:04:28,453 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:04:28,456 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:04:28,457 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:04:28,457 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:04:27" (1/3) ... [2021-08-27 16:04:28,458 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3aa33ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:04:28, skipping insertion in model container [2021-08-27 16:04:28,458 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:04:28,458 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:27" (2/3) ... [2021-08-27 16:04:28,459 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3aa33ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:04:28, skipping insertion in model container [2021-08-27 16:04:28,459 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:04:28,459 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:04:28" (3/3) ... [2021-08-27 16:04:28,460 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product45.cil.c [2021-08-27 16:04:28,494 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:04:28,494 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:04:28,494 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:04:28,495 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:04:28,495 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:04:28,495 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:04:28,495 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:04:28,495 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:04:28,516 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 130 states, 129 states have (on average 1.5193798449612403) internal successors, (196), 129 states have internal predecessors, (196), 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) [2021-08-27 16:04:28,549 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 83 [2021-08-27 16:04:28,549 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:28,549 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:28,554 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:28,554 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:28,555 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:04:28,557 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 130 states, 129 states have (on average 1.5193798449612403) internal successors, (196), 129 states have internal predecessors, (196), 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) [2021-08-27 16:04:28,561 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 83 [2021-08-27 16:04:28,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:28,561 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:28,562 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:28,562 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:28,565 INFO L791 eck$LassoCheckResult]: Stem: 116#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(13);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(110, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 2 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(102, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(102, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 3 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string54.base, #t~string54.offset, 1);call write~init~int(80, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(117, #t~string54.base, 2 + #t~string54.offset, 1);call write~init~int(109, #t~string54.base, 3 + #t~string54.offset, 1);call write~init~int(112, #t~string54.base, 4 + #t~string54.offset, 1);call write~init~int(58, #t~string54.base, 5 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 6 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string56.base, #t~string56.offset, 1);call write~init~int(110, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 2 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string58.base, #t~string58.offset, 1);call write~init~int(102, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(102, #t~string58.base, 2 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 3 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string60.base, #t~string60.offset, 1);call write~init~int(32, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 2 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string62.base, #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 1 + #t~string62.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(13);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string71.base, #t~string71.offset, 1);call write~init~int(77, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(101, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(116, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(104, #t~string71.base, 4 + #t~string71.offset, 1);call write~init~int(58, #t~string71.base, 5 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 6 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string73.base, #t~string73.offset, 1);call write~init~int(82, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(73, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(84, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 4 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(75, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~methAndRunningLastTime~0 := 0; 32#L-1true havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 70#L908true havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 113#L916true main_#t~ret42 := valid_product_#res;main_~tmp~3 := main_#t~ret42;havoc main_#t~ret42; 39#L509true assume 0 != main_~tmp~3; 40#L480true ~methAndRunningLastTime~0 := 0; 13#L927true havoc test_#t~nondet64, test_#t~nondet65, test_#t~nondet66, test_#t~nondet67, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 59#L938-1true [2021-08-27 16:04:28,565 INFO L793 eck$LassoCheckResult]: Loop: 59#L938-1true assume !false; 25#L737true assume test_~splverifierCounter~0 < 4; 52#L738true test_~tmp~8 := test_#t~nondet64;havoc test_#t~nondet64; 86#L746true assume !(0 != test_~tmp~8); 80#L746-1true test_~tmp___0~1 := test_#t~nondet65;havoc test_#t~nondet65; 76#L756true assume !(0 != test_~tmp___0~1); 48#L756-1true test_~tmp___2~0 := test_#t~nondet66;havoc test_#t~nondet66; 8#L766true assume 0 != test_~tmp___2~0; 84#L772-2true assume !(0 != ~pumpRunning~0); 107#L538true assume !(0 != ~systemActive~0); 21#L545true havoc __utac_acc__Specification2_spec__2_#t~ret79, __utac_acc__Specification2_spec__2_#t~ret80, __utac_acc__Specification2_spec__2_~tmp~9, __utac_acc__Specification2_spec__2_~tmp___0~2;havoc __utac_acc__Specification2_spec__2_~tmp~9;havoc __utac_acc__Specification2_spec__2_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 118#L835-3true __utac_acc__Specification2_spec__2_#t~ret79 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~9 := __utac_acc__Specification2_spec__2_#t~ret79;havoc __utac_acc__Specification2_spec__2_#t~ret79; 109#L938true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 59#L938-1true [2021-08-27 16:04:28,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:28,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:04:28,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:28,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162350696] [2021-08-27 16:04:28,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:28,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:28,697 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:28,776 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:28,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:28,779 INFO L82 PathProgramCache]: Analyzing trace with hash 4969610, now seen corresponding path program 1 times [2021-08-27 16:04:28,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:28,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589216327] [2021-08-27 16:04:28,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:28,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:28,784 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:28,789 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:28,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:28,790 INFO L82 PathProgramCache]: Analyzing trace with hash 838266116, now seen corresponding path program 1 times [2021-08-27 16:04:28,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:28,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543782650] [2021-08-27 16:04:28,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:28,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:04:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:04:28,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:04:28,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543782650] [2021-08-27 16:04:28,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543782650] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:04:28,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:04:28,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:04:28,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407117825] [2021-08-27 16:04:28,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:04:28,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:04:28,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:04:28,987 INFO L87 Difference]: Start difference. First operand has 130 states, 129 states have (on average 1.5193798449612403) internal successors, (196), 129 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-08-27 16:04:29,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:04:29,127 INFO L93 Difference]: Finished difference Result 130 states and 185 transitions. [2021-08-27 16:04:29,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:04:29,128 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 185 transitions. [2021-08-27 16:04:29,130 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2021-08-27 16:04:29,133 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 123 states and 178 transitions. [2021-08-27 16:04:29,134 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 123 [2021-08-27 16:04:29,134 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 123 [2021-08-27 16:04:29,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 178 transitions. [2021-08-27 16:04:29,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:04:29,135 INFO L681 BuchiCegarLoop]: Abstraction has 123 states and 178 transitions. [2021-08-27 16:04:29,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states and 178 transitions. [2021-08-27 16:04:29,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-08-27 16:04:29,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 123 states have (on average 1.4471544715447155) internal successors, (178), 122 states have internal predecessors, (178), 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) [2021-08-27 16:04:29,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 178 transitions. [2021-08-27 16:04:29,156 INFO L704 BuchiCegarLoop]: Abstraction has 123 states and 178 transitions. [2021-08-27 16:04:29,156 INFO L587 BuchiCegarLoop]: Abstraction has 123 states and 178 transitions. [2021-08-27 16:04:29,156 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:04:29,156 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 123 states and 178 transitions. [2021-08-27 16:04:29,157 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2021-08-27 16:04:29,157 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:29,157 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:29,158 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:29,158 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:29,158 INFO L791 eck$LassoCheckResult]: Stem: 397#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(13);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(110, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 2 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(102, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(102, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 3 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string54.base, #t~string54.offset, 1);call write~init~int(80, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(117, #t~string54.base, 2 + #t~string54.offset, 1);call write~init~int(109, #t~string54.base, 3 + #t~string54.offset, 1);call write~init~int(112, #t~string54.base, 4 + #t~string54.offset, 1);call write~init~int(58, #t~string54.base, 5 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 6 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string56.base, #t~string56.offset, 1);call write~init~int(110, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 2 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string58.base, #t~string58.offset, 1);call write~init~int(102, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(102, #t~string58.base, 2 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 3 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string60.base, #t~string60.offset, 1);call write~init~int(32, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 2 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string62.base, #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 1 + #t~string62.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(13);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string71.base, #t~string71.offset, 1);call write~init~int(77, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(101, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(116, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(104, #t~string71.base, 4 + #t~string71.offset, 1);call write~init~int(58, #t~string71.base, 5 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 6 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string73.base, #t~string73.offset, 1);call write~init~int(82, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(73, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(84, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 4 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(75, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~methAndRunningLastTime~0 := 0; 324#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 325#L908 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 371#L916 main_#t~ret42 := valid_product_#res;main_~tmp~3 := main_#t~ret42;havoc main_#t~ret42; 337#L509 assume 0 != main_~tmp~3; 338#L480 ~methAndRunningLastTime~0 := 0; 294#L927 havoc test_#t~nondet64, test_#t~nondet65, test_#t~nondet66, test_#t~nondet67, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 295#L938-1 [2021-08-27 16:04:29,159 INFO L793 eck$LassoCheckResult]: Loop: 295#L938-1 assume !false; 316#L737 assume test_~splverifierCounter~0 < 4; 317#L738 test_~tmp~8 := test_#t~nondet64;havoc test_#t~nondet64; 352#L746 assume !(0 != test_~tmp~8); 281#L746-1 test_~tmp___0~1 := test_#t~nondet65;havoc test_#t~nondet65; 376#L756 assume !(0 != test_~tmp___0~1); 346#L756-1 test_~tmp___2~0 := test_#t~nondet66;havoc test_#t~nondet66; 286#L766 assume 0 != test_~tmp___2~0; 283#L772-2 assume !(0 != ~pumpRunning~0); 331#L538 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret44, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 334#L596 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret43, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 335#L570-1 assume !(0 == ~pumpRunning~0); 308#L545 havoc __utac_acc__Specification2_spec__2_#t~ret79, __utac_acc__Specification2_spec__2_#t~ret80, __utac_acc__Specification2_spec__2_~tmp~9, __utac_acc__Specification2_spec__2_~tmp___0~2;havoc __utac_acc__Specification2_spec__2_~tmp~9;havoc __utac_acc__Specification2_spec__2_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 309#L835-3 __utac_acc__Specification2_spec__2_#t~ret79 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~9 := __utac_acc__Specification2_spec__2_#t~ret79;havoc __utac_acc__Specification2_spec__2_#t~ret79; 394#L938 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 295#L938-1 [2021-08-27 16:04:29,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:29,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:04:29,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:29,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321526591] [2021-08-27 16:04:29,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:29,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:29,183 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:29,211 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:29,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:29,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1695508204, now seen corresponding path program 1 times [2021-08-27 16:04:29,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:29,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031525673] [2021-08-27 16:04:29,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:29,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:04:29,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:04:29,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:04:29,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031525673] [2021-08-27 16:04:29,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031525673] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:04:29,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:04:29,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:04:29,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995231803] [2021-08-27 16:04:29,224 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:04:29,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:04:29,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:04:29,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:04:29,225 INFO L87 Difference]: Start difference. First operand 123 states and 178 transitions. cyclomatic complexity: 57 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-08-27 16:04:29,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:04:29,290 INFO L93 Difference]: Finished difference Result 167 states and 232 transitions. [2021-08-27 16:04:29,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:04:29,291 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 167 states and 232 transitions. [2021-08-27 16:04:29,292 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 114 [2021-08-27 16:04:29,293 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 167 states to 167 states and 232 transitions. [2021-08-27 16:04:29,293 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 167 [2021-08-27 16:04:29,294 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 167 [2021-08-27 16:04:29,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 167 states and 232 transitions. [2021-08-27 16:04:29,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:04:29,295 INFO L681 BuchiCegarLoop]: Abstraction has 167 states and 232 transitions. [2021-08-27 16:04:29,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states and 232 transitions. [2021-08-27 16:04:29,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-08-27 16:04:29,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 167 states have (on average 1.3892215568862276) internal successors, (232), 166 states have internal predecessors, (232), 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) [2021-08-27 16:04:29,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 232 transitions. [2021-08-27 16:04:29,300 INFO L704 BuchiCegarLoop]: Abstraction has 167 states and 232 transitions. [2021-08-27 16:04:29,300 INFO L587 BuchiCegarLoop]: Abstraction has 167 states and 232 transitions. [2021-08-27 16:04:29,300 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:04:29,301 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 232 transitions. [2021-08-27 16:04:29,301 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 114 [2021-08-27 16:04:29,301 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:29,302 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:29,302 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:29,302 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] [2021-08-27 16:04:29,302 INFO L791 eck$LassoCheckResult]: Stem: 703#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(13);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(110, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 2 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(102, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(102, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 3 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string54.base, #t~string54.offset, 1);call write~init~int(80, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(117, #t~string54.base, 2 + #t~string54.offset, 1);call write~init~int(109, #t~string54.base, 3 + #t~string54.offset, 1);call write~init~int(112, #t~string54.base, 4 + #t~string54.offset, 1);call write~init~int(58, #t~string54.base, 5 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 6 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string56.base, #t~string56.offset, 1);call write~init~int(110, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 2 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string58.base, #t~string58.offset, 1);call write~init~int(102, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(102, #t~string58.base, 2 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 3 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string60.base, #t~string60.offset, 1);call write~init~int(32, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 2 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string62.base, #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 1 + #t~string62.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(13);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string71.base, #t~string71.offset, 1);call write~init~int(77, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(101, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(116, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(104, #t~string71.base, 4 + #t~string71.offset, 1);call write~init~int(58, #t~string71.base, 5 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 6 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string73.base, #t~string73.offset, 1);call write~init~int(82, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(73, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(84, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 4 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(75, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~methAndRunningLastTime~0 := 0; 624#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 625#L908 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 671#L916 main_#t~ret42 := valid_product_#res;main_~tmp~3 := main_#t~ret42;havoc main_#t~ret42; 634#L509 assume 0 != main_~tmp~3; 635#L480 ~methAndRunningLastTime~0 := 0; 591#L927 havoc test_#t~nondet64, test_#t~nondet65, test_#t~nondet66, test_#t~nondet67, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 592#L938-1 [2021-08-27 16:04:29,303 INFO L793 eck$LassoCheckResult]: Loop: 592#L938-1 assume !false; 612#L737 assume test_~splverifierCounter~0 < 4; 613#L738 test_~tmp~8 := test_#t~nondet64;havoc test_#t~nondet64; 651#L746 assume !(0 != test_~tmp~8); 577#L746-1 test_~tmp___0~1 := test_#t~nondet65;havoc test_#t~nondet65; 677#L756 assume !(0 != test_~tmp___0~1); 676#L756-1 test_~tmp___2~0 := test_#t~nondet66;havoc test_#t~nondet66; 723#L766 assume 0 != test_~tmp___2~0; 684#L772-2 assume !(0 != ~pumpRunning~0); 685#L538 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret44, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 632#L596 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret43, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 633#L570-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret63, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~9;havoc isHighWaterSensorDry_~retValue_acc~9; 701#L875-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 683#L880-1 isHighWaterLevel_#t~ret63 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret63;havoc isHighWaterLevel_#t~ret63; 659#L715-3 assume !(0 != isHighWaterLevel_~tmp~7);isHighWaterLevel_~tmp___0~0 := 1; 660#L715-5 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 645#L721-1 processEnvironment__wrappee__methaneQuery_#t~ret43 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~4 := processEnvironment__wrappee__methaneQuery_#t~ret43;havoc processEnvironment__wrappee__methaneQuery_#t~ret43; 646#L574-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~4); 616#L545 havoc __utac_acc__Specification2_spec__2_#t~ret79, __utac_acc__Specification2_spec__2_#t~ret80, __utac_acc__Specification2_spec__2_~tmp~9, __utac_acc__Specification2_spec__2_~tmp___0~2;havoc __utac_acc__Specification2_spec__2_~tmp~9;havoc __utac_acc__Specification2_spec__2_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 718#L835-3 __utac_acc__Specification2_spec__2_#t~ret79 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~9 := __utac_acc__Specification2_spec__2_#t~ret79;havoc __utac_acc__Specification2_spec__2_#t~ret79; 700#L938 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 592#L938-1 [2021-08-27 16:04:29,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:29,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:04:29,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:29,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723623491] [2021-08-27 16:04:29,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:29,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:29,322 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:29,346 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:29,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:29,347 INFO L82 PathProgramCache]: Analyzing trace with hash -434026982, now seen corresponding path program 1 times [2021-08-27 16:04:29,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:29,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382046106] [2021-08-27 16:04:29,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:29,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:04:29,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:04:29,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:04:29,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382046106] [2021-08-27 16:04:29,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382046106] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:04:29,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:04:29,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:04:29,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999263604] [2021-08-27 16:04:29,374 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:04:29,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:04:29,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:04:29,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:04:29,375 INFO L87 Difference]: Start difference. First operand 167 states and 232 transitions. cyclomatic complexity: 67 Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2021-08-27 16:04:29,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:04:29,484 INFO L93 Difference]: Finished difference Result 509 states and 697 transitions. [2021-08-27 16:04:29,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:04:29,484 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 509 states and 697 transitions. [2021-08-27 16:04:29,487 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 364 [2021-08-27 16:04:29,490 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 509 states to 509 states and 697 transitions. [2021-08-27 16:04:29,490 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 509 [2021-08-27 16:04:29,491 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 509 [2021-08-27 16:04:29,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 509 states and 697 transitions. [2021-08-27 16:04:29,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:04:29,492 INFO L681 BuchiCegarLoop]: Abstraction has 509 states and 697 transitions. [2021-08-27 16:04:29,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states and 697 transitions. [2021-08-27 16:04:29,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 185. [2021-08-27 16:04:29,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 185 states have (on average 1.3513513513513513) internal successors, (250), 184 states have internal predecessors, (250), 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) [2021-08-27 16:04:29,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 250 transitions. [2021-08-27 16:04:29,499 INFO L704 BuchiCegarLoop]: Abstraction has 185 states and 250 transitions. [2021-08-27 16:04:29,500 INFO L587 BuchiCegarLoop]: Abstraction has 185 states and 250 transitions. [2021-08-27 16:04:29,500 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:04:29,500 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 185 states and 250 transitions. [2021-08-27 16:04:29,501 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 126 [2021-08-27 16:04:29,501 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:29,501 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:29,501 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:29,502 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] [2021-08-27 16:04:29,502 INFO L791 eck$LassoCheckResult]: Stem: 1403#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(13);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(110, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 2 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(102, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(102, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 3 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string54.base, #t~string54.offset, 1);call write~init~int(80, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(117, #t~string54.base, 2 + #t~string54.offset, 1);call write~init~int(109, #t~string54.base, 3 + #t~string54.offset, 1);call write~init~int(112, #t~string54.base, 4 + #t~string54.offset, 1);call write~init~int(58, #t~string54.base, 5 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 6 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string56.base, #t~string56.offset, 1);call write~init~int(110, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 2 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string58.base, #t~string58.offset, 1);call write~init~int(102, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(102, #t~string58.base, 2 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 3 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string60.base, #t~string60.offset, 1);call write~init~int(32, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 2 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string62.base, #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 1 + #t~string62.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(13);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string71.base, #t~string71.offset, 1);call write~init~int(77, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(101, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(116, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(104, #t~string71.base, 4 + #t~string71.offset, 1);call write~init~int(58, #t~string71.base, 5 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 6 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string73.base, #t~string73.offset, 1);call write~init~int(82, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(73, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(84, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 4 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string75.base, #t~string75.offset, 1);call write~init~int(75, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~methAndRunningLastTime~0 := 0; 1315#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 1316#L908 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 1367#L916 main_#t~ret42 := valid_product_#res;main_~tmp~3 := main_#t~ret42;havoc main_#t~ret42; 1326#L509 assume 0 != main_~tmp~3; 1327#L480 ~methAndRunningLastTime~0 := 0; 1281#L927 havoc test_#t~nondet64, test_#t~nondet65, test_#t~nondet66, test_#t~nondet67, test_~splverifierCounter~0, test_~tmp~8, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~8;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1282#L938-1 [2021-08-27 16:04:29,502 INFO L793 eck$LassoCheckResult]: Loop: 1282#L938-1 assume !false; 1303#L737 assume test_~splverifierCounter~0 < 4; 1304#L738 test_~tmp~8 := test_#t~nondet64;havoc test_#t~nondet64; 1436#L746 assume !(0 != test_~tmp~8); 1434#L746-1 test_~tmp___0~1 := test_#t~nondet65;havoc test_#t~nondet65; 1429#L756 assume !(0 != test_~tmp___0~1); 1423#L756-1 test_~tmp___2~0 := test_#t~nondet66;havoc test_#t~nondet66; 1420#L766 assume 0 != test_~tmp___2~0; 1383#L772-2 assume !(0 != ~pumpRunning~0); 1384#L538 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret44, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1324#L596 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret43, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 1325#L570-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret63, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~9;havoc isHighWaterSensorDry_~retValue_acc~9; 1401#L875-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 1382#L880-1 isHighWaterLevel_#t~ret63 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret63;havoc isHighWaterLevel_#t~ret63; 1353#L715-3 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~0 := 0; 1355#L715-5 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 1340#L721-1 processEnvironment__wrappee__methaneQuery_#t~ret43 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~4 := processEnvironment__wrappee__methaneQuery_#t~ret43;havoc processEnvironment__wrappee__methaneQuery_#t~ret43; 1341#L574-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~4); 1295#L545 havoc __utac_acc__Specification2_spec__2_#t~ret79, __utac_acc__Specification2_spec__2_#t~ret80, __utac_acc__Specification2_spec__2_~tmp~9, __utac_acc__Specification2_spec__2_~tmp___0~2;havoc __utac_acc__Specification2_spec__2_~tmp~9;havoc __utac_acc__Specification2_spec__2_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~7;havoc isMethaneLevelCritical_~retValue_acc~7;isMethaneLevelCritical_~retValue_acc~7 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~7; 1296#L835-3 __utac_acc__Specification2_spec__2_#t~ret79 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~9 := __utac_acc__Specification2_spec__2_#t~ret79;havoc __utac_acc__Specification2_spec__2_#t~ret79; 1399#L938 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 1282#L938-1 [2021-08-27 16:04:29,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:29,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:04:29,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:29,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139454973] [2021-08-27 16:04:29,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:29,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:29,522 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:29,545 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:29,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:29,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2085932952, now seen corresponding path program 1 times [2021-08-27 16:04:29,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:29,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222605669] [2021-08-27 16:04:29,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:29,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:29,550 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:29,555 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:29,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:29,555 INFO L82 PathProgramCache]: Analyzing trace with hash -435892718, now seen corresponding path program 1 times [2021-08-27 16:04:29,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:29,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797850514] [2021-08-27 16:04:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:29,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:29,572 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:29,594 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:11,336 WARN L207 SmtUtils]: Spent 41.52 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:05:54,312 WARN L207 SmtUtils]: Spent 21.04 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:05:54,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:05:54 BoogieIcfgContainer [2021-08-27 16:05:54,411 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:05:54,412 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:05:54,419 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:05:54,419 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:05:54,420 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:04:28" (3/4) ... [2021-08-27 16:05:54,421 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:05:54,454 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:05:54,455 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:05:54,455 INFO L168 Benchmark]: Toolchain (without parser) took 87140.03 ms. Allocated memory was 71.3 MB in the beginning and 178.3 MB in the end (delta: 107.0 MB). Free memory was 50.6 MB in the beginning and 98.2 MB in the end (delta: -47.6 MB). Peak memory consumption was 59.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:54,456 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 71.3 MB. Free memory is still 53.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:05:54,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.33 ms. Allocated memory is still 71.3 MB. Free memory was 50.4 MB in the beginning and 46.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:54,456 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.98 ms. Allocated memory is still 71.3 MB. Free memory was 46.3 MB in the beginning and 42.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:54,457 INFO L168 Benchmark]: Boogie Preprocessor took 22.83 ms. Allocated memory is still 71.3 MB. Free memory was 42.4 MB in the beginning and 39.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:54,457 INFO L168 Benchmark]: RCFGBuilder took 735.58 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 39.7 MB in the beginning and 53.2 MB in the end (delta: -13.5 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:54,458 INFO L168 Benchmark]: BuchiAutomizer took 85958.36 ms. Allocated memory was 104.9 MB in the beginning and 178.3 MB in the end (delta: 73.4 MB). Free memory was 53.2 MB in the beginning and 100.3 MB in the end (delta: -47.1 MB). Peak memory consumption was 85.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:54,458 INFO L168 Benchmark]: Witness Printer took 42.90 ms. Allocated memory is still 178.3 MB. Free memory was 100.3 MB in the beginning and 98.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:54,461 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 71.3 MB. Free memory is still 53.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 310.33 ms. Allocated memory is still 71.3 MB. Free memory was 50.4 MB in the beginning and 46.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.98 ms. Allocated memory is still 71.3 MB. Free memory was 46.3 MB in the beginning and 42.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.83 ms. Allocated memory is still 71.3 MB. Free memory was 42.4 MB in the beginning and 39.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 735.58 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 39.7 MB in the beginning and 53.2 MB in the end (delta: -13.5 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 85958.36 ms. Allocated memory was 104.9 MB in the beginning and 178.3 MB in the end (delta: 73.4 MB). Free memory was 53.2 MB in the beginning and 100.3 MB in the end (delta: -47.1 MB). Peak memory consumption was 85.6 MB. Max. memory is 16.1 GB. * Witness Printer took 42.90 ms. Allocated memory is still 178.3 MB. Free memory was 100.3 MB in the beginning and 98.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 185 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 85.9s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 85.4s. Construction of modules took 0.2s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 24.4ms AutomataMinimizationTime, 3 MinimizatonAttempts, 324 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 185 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 629 SDtfs, 1239 SDslu, 679 SDs, 0 SdLazy, 129 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 216.3ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 736]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=139} State at position 1 is {NULL=0, NULL=139, NULL=152, NULL=0, NULL=144, methaneLevelCritical=0, retValue_acc=1, tmp=0, tmp___1=0, NULL=158, retValue_acc=0, NULL=0, NULL=141, NULL=156, cleanupTimeShifts=4, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@37609a11=0, waterLevel=1, NULL=0, NULL=0, NULL=150, NULL=163, \result=1, retValue_acc=1, head=0, pumpRunning=0, tmp=1, NULL=0, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, NULL=161, NULL=0, tmp=1, NULL=0, NULL=142, tmp___0=0, NULL=146, methAndRunningLastTime=0, NULL=151, head=0, NULL=0, NULL=0, tmp=0, NULL=143, NULL=0, NULL=0, NULL=148, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5316fa7=0, NULL=0, retValue_acc=0, NULL=164, NULL=149, NULL=166, tmp___0=0, NULL=0, NULL=0, NULL=159, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@c92aee6=0, NULL=154, NULL=145, NULL=160, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=165, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@646208b9=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@39cc4f6b=0, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=157, \result=0, NULL=153, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2a5e90ea=0, NULL=155, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@341d49bb=68, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3f50ac79=0, NULL=162, NULL=147, tmp___2=68, tmp___0=0, splverifierCounter=0, NULL=0, \result=0, NULL=167, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@c749e3d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7ec2ee20=0, NULL=140, NULL=0, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L417] int cleanupTimeShifts = 4; [L530] int pumpRunning = 0; [L531] int systemActive = 1; [L792] int waterLevel = 1; [L793] int methaneLevelCritical = 0; [L921] int methAndRunningLastTime ; [L500] int retValue_acc ; [L501] int tmp ; [L912] int retValue_acc ; [L915] retValue_acc = 1 [L916] return (retValue_acc); [L507] tmp = valid_product() [L509] COND TRUE \read(tmp) [L926] methAndRunningLastTime = 0 [L727] int splverifierCounter ; [L728] int tmp ; [L729] int tmp___0 ; [L730] int tmp___1 ; [L731] int tmp___2 ; [L734] splverifierCounter = 0 Loop: [L736] COND TRUE 1 [L738] COND TRUE splverifierCounter < 4 [L744] tmp = __VERIFIER_nondet_int() [L746] COND FALSE !(\read(tmp)) [L754] tmp___0 = __VERIFIER_nondet_int() [L756] COND FALSE !(\read(tmp___0)) [L764] tmp___2 = __VERIFIER_nondet_int() [L766] COND TRUE \read(tmp___2) [L538] COND FALSE !(\read(pumpRunning)) [L545] COND TRUE \read(systemActive) [L593] int tmp ; [L596] COND FALSE !(\read(pumpRunning)) [L567] int tmp ; [L570] COND TRUE ! pumpRunning [L707] int retValue_acc ; [L708] int tmp ; [L709] int tmp___0 ; [L872] int retValue_acc ; [L875] COND TRUE waterLevel < 2 [L876] retValue_acc = 1 [L877] return (retValue_acc); [L713] tmp = isHighWaterSensorDry() [L715] COND TRUE \read(tmp) [L716] tmp___0 = 0 [L720] retValue_acc = tmp___0 [L721] return (retValue_acc); [L572] tmp = isHighWaterLevel() [L574] COND FALSE !(\read(tmp)) [L931] int tmp ; [L932] int tmp___0 ; [L831] int retValue_acc ; [L834] retValue_acc = methaneLevelCritical [L835] return (retValue_acc); [L936] tmp = isMethaneLevelCritical() [L938] COND FALSE !(\read(tmp)) [L954] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:05:54,504 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...