./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec2_product50.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 9f33e15e0937d430cb63c24d59de4b6438b3be32 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Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 20:20:24,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:20:24,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:20:24,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:20:24,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:20:24,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:20:24,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:20:24,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:20:24,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:20:24,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:20:24,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:20:24,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:20:24,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:20:24,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:20:24,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:20:24,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:20:24,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:20:24,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:20:24,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:20:24,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:20:24,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:20:24,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:20:24,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:20:24,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:20:24,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:20:24,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:20:24,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:20:24,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:20:24,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:20:24,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:20:24,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:20:24,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:20:24,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:20:24,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:20:24,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:20:24,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:20:24,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:20:24,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:20:24,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:20:24,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:20:24,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:20:24,516 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:20:24,554 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:20:24,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:20:24,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:20:24,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:20:24,556 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:20:24,556 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:20:24,557 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:20:24,557 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:20:24,557 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:20:24,557 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:20:24,558 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:20:24,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:20:24,558 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:20:24,558 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:20:24,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:20:24,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:20:24,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:20:24,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:20:24,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:20:24,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:20:24,559 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:20:24,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:20:24,559 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:20:24,560 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:20:24,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:20:24,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:20:24,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:20:24,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:20:24,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:20:24,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:20:24,561 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:20:24,562 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f33e15e0937d430cb63c24d59de4b6438b3be32 [2021-07-06 20:20:24,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:20:24,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:20:24,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:20:24,867 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:20:24,867 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:20:24,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c [2021-07-06 20:20:24,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93adbdcc4/468ca57892784cd0ab0f102dbd71680d/FLAGb7e62c33a [2021-07-06 20:20:25,336 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:20:25,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c [2021-07-06 20:20:25,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93adbdcc4/468ca57892784cd0ab0f102dbd71680d/FLAGb7e62c33a [2021-07-06 20:20:25,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93adbdcc4/468ca57892784cd0ab0f102dbd71680d [2021-07-06 20:20:25,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:20:25,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:20:25,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:20:25,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:20:25,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:20:25,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:20:25" (1/1) ... [2021-07-06 20:20:25,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c09a4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:20:25, skipping insertion in model container [2021-07-06 20:20:25,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:20:25" (1/1) ... [2021-07-06 20:20:25,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:20:25,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:20:25,660 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c[18615,18628] [2021-07-06 20:20:25,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:20:25,671 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:20:25,730 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c[18615,18628] [2021-07-06 20:20:25,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:20:25,773 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:20:25,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:20:25 WrapperNode [2021-07-06 20:20:25,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:20:25,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:20:25,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:20:25,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:20:25,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:20:25" (1/1) ... [2021-07-06 20:20:25,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:20:25" (1/1) ... [2021-07-06 20:20:25,837 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:20:25,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:20:25,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:20:25,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:20:25,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:20:25" (1/1) ... [2021-07-06 20:20:25,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:20:25" (1/1) ... [2021-07-06 20:20:25,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:20:25" (1/1) ... [2021-07-06 20:20:25,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:20:25" (1/1) ... [2021-07-06 20:20:25,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:20:25" (1/1) ... [2021-07-06 20:20:25,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:20:25" (1/1) ... [2021-07-06 20:20:25,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:20:25" (1/1) ... [2021-07-06 20:20:25,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:20:25,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:20:25,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:20:25,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:20:25,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:20:25" (1/1) ... [2021-07-06 20:20:25,898 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:20:25,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:20:25,925 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 20:20:25,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-07-06 20:20:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:20:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:20:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:20:25,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:20:26,540 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:20:26,540 INFO L299 CfgBuilder]: Removed 160 assume(true) statements. [2021-07-06 20:20:26,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:20:26 BoogieIcfgContainer [2021-07-06 20:20:26,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:20:26,542 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:20:26,543 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:20:26,544 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:20:26,545 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:20:26,545 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:20:25" (1/3) ... [2021-07-06 20:20:26,546 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66b04d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:20:26, skipping insertion in model container [2021-07-06 20:20:26,546 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:20:26,546 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:20:25" (2/3) ... [2021-07-06 20:20:26,546 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66b04d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:20:26, skipping insertion in model container [2021-07-06 20:20:26,546 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:20:26,547 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:20:26" (3/3) ... [2021-07-06 20:20:26,547 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product50.cil.c [2021-07-06 20:20:26,578 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:20:26,578 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:20:26,579 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:20:26,579 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:20:26,579 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:20:26,579 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:20:26,579 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:20:26,579 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:20:26,596 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 118 states, 117 states have (on average 1.547008547008547) internal successors, (181), 117 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:20:26,618 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-07-06 20:20:26,619 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:20:26,619 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:20:26,624 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:20:26,624 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:20:26,624 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:20:26,625 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 118 states, 117 states have (on average 1.547008547008547) internal successors, (181), 117 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:20:26,629 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-07-06 20:20:26,629 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:20:26,629 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:20:26,630 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:20:26,630 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:20:26,633 INFO L791 eck$LassoCheckResult]: Stem: 63#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 10#L-1true havoc main_#res;havoc main_#t~ret8, main_~retValue_acc~2, main_~tmp~0;havoc main_~retValue_acc~2;havoc main_~tmp~0; 30#L67true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 42#L75true main_#t~ret8 := valid_product_#res;main_~tmp~0 := main_#t~ret8;havoc main_#t~ret8; 21#L169true assume 0 != main_~tmp~0; 55#L143true ~methAndRunningLastTime~0 := 0; 110#L192true havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 109#L203-1true [2021-07-06 20:20:26,633 INFO L793 eck$LassoCheckResult]: Loop: 109#L203-1true assume !false; 12#L552true assume test_~splverifierCounter~0 < 4; 61#L553true test_~tmp~6 := test_#t~nondet42;havoc test_#t~nondet42; 88#L561true assume !(0 != test_~tmp~6); 90#L561-1true test_~tmp___0~3 := test_#t~nondet43;havoc test_#t~nondet43; 22#L571true assume !(0 != test_~tmp___0~3); 23#L571-1true test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 54#L581true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 60#L589-2true assume !(0 != ~pumpRunning~0); 6#L343true assume !(0 != ~systemActive~0); 40#L350true havoc __utac_acc__Specification2_spec__2_#t~ret9, __utac_acc__Specification2_spec__2_#t~ret10, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 35#L273true __utac_acc__Specification2_spec__2_#t~ret9 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret9;havoc __utac_acc__Specification2_spec__2_#t~ret9; 111#L203true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 109#L203-1true [2021-07-06 20:20:26,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:20:26,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-07-06 20:20:26,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:20:26,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67827926] [2021-07-06 20:20:26,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:20:26,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:20:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:20:26,824 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:20:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:20:26,907 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:20:26,932 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:20:26,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:20:26,934 INFO L82 PathProgramCache]: Analyzing trace with hash 5462155, now seen corresponding path program 1 times [2021-07-06 20:20:26,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:20:26,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023228998] [2021-07-06 20:20:26,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:20:26,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:20:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:20:26,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:20:26,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:20:26,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:20:26,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:20:26,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:20:26,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:20:26,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:20:26,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:20:26,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023228998] [2021-07-06 20:20:26,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023228998] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:20:26,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:20:26,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:20:26,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67205724] [2021-07-06 20:20:26,994 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:20:26,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:20:27,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:20:27,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:20:27,013 INFO L87 Difference]: Start difference. First operand has 118 states, 117 states have (on average 1.547008547008547) internal successors, (181), 117 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:20:27,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:20:27,062 INFO L93 Difference]: Finished difference Result 118 states and 171 transitions. [2021-07-06 20:20:27,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:20:27,064 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 118 states and 171 transitions. [2021-07-06 20:20:27,069 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2021-07-06 20:20:27,074 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 118 states to 111 states and 163 transitions. [2021-07-06 20:20:27,075 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 111 [2021-07-06 20:20:27,075 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 111 [2021-07-06 20:20:27,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 163 transitions. [2021-07-06 20:20:27,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:20:27,077 INFO L681 BuchiCegarLoop]: Abstraction has 111 states and 163 transitions. [2021-07-06 20:20:27,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 163 transitions. [2021-07-06 20:20:27,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-07-06 20:20:27,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 111 states have (on average 1.4684684684684686) internal successors, (163), 110 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:20:27,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 163 transitions. [2021-07-06 20:20:27,098 INFO L704 BuchiCegarLoop]: Abstraction has 111 states and 163 transitions. [2021-07-06 20:20:27,099 INFO L587 BuchiCegarLoop]: Abstraction has 111 states and 163 transitions. [2021-07-06 20:20:27,099 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:20:27,099 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 111 states and 163 transitions. [2021-07-06 20:20:27,100 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2021-07-06 20:20:27,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:20:27,100 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:20:27,101 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:20:27,101 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:20:27,101 INFO L791 eck$LassoCheckResult]: Stem: 330#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 258#L-1 havoc main_#res;havoc main_#t~ret8, main_~retValue_acc~2, main_~tmp~0;havoc main_~retValue_acc~2;havoc main_~tmp~0; 259#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 292#L75 main_#t~ret8 := valid_product_#res;main_~tmp~0 := main_#t~ret8;havoc main_#t~ret8; 278#L169 assume 0 != main_~tmp~0; 279#L143 ~methAndRunningLastTime~0 := 0; 321#L192 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 248#L203-1 [2021-07-06 20:20:27,101 INFO L793 eck$LassoCheckResult]: Loop: 248#L203-1 assume !false; 262#L552 assume test_~splverifierCounter~0 < 4; 263#L553 test_~tmp~6 := test_#t~nondet42;havoc test_#t~nondet42; 328#L561 assume !(0 != test_~tmp~6); 318#L561-1 test_~tmp___0~3 := test_#t~nondet43;havoc test_#t~nondet43; 280#L571 assume !(0 != test_~tmp___0~3); 282#L571-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 283#L581 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 320#L589-2 assume !(0 != ~pumpRunning~0); 251#L343 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 252#L401 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 303#L375-1 assume !(0 == ~pumpRunning~0); 301#L350 havoc __utac_acc__Specification2_spec__2_#t~ret9, __utac_acc__Specification2_spec__2_#t~ret10, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 298#L273 __utac_acc__Specification2_spec__2_#t~ret9 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret9;havoc __utac_acc__Specification2_spec__2_#t~ret9; 299#L203 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 248#L203-1 [2021-07-06 20:20:27,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:20:27,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-07-06 20:20:27,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:20:27,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777903815] [2021-07-06 20:20:27,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:20:27,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:20:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:20:27,148 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:20:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:20:27,189 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:20:27,198 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:20:27,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:20:27,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1686527799, now seen corresponding path program 1 times [2021-07-06 20:20:27,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:20:27,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682480611] [2021-07-06 20:20:27,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:20:27,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:20:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:20:27,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:20:27,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:20:27,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:20:27,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:20:27,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:20:27,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:20:27,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:20:27,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:20:27,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682480611] [2021-07-06 20:20:27,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682480611] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:20:27,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:20:27,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:20:27,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201897228] [2021-07-06 20:20:27,236 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:20:27,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:20:27,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:20:27,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:20:27,237 INFO L87 Difference]: Start difference. First operand 111 states and 163 transitions. cyclomatic complexity: 54 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) [2021-07-06 20:20:27,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:20:27,334 INFO L93 Difference]: Finished difference Result 155 states and 217 transitions. [2021-07-06 20:20:27,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:20:27,335 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 155 states and 217 transitions. [2021-07-06 20:20:27,338 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 106 [2021-07-06 20:20:27,343 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 155 states to 155 states and 217 transitions. [2021-07-06 20:20:27,343 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 155 [2021-07-06 20:20:27,344 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 155 [2021-07-06 20:20:27,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 155 states and 217 transitions. [2021-07-06 20:20:27,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:20:27,348 INFO L681 BuchiCegarLoop]: Abstraction has 155 states and 217 transitions. [2021-07-06 20:20:27,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states and 217 transitions. [2021-07-06 20:20:27,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-07-06 20:20:27,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 155 states have (on average 1.4) internal successors, (217), 154 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:20:27,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 217 transitions. [2021-07-06 20:20:27,357 INFO L704 BuchiCegarLoop]: Abstraction has 155 states and 217 transitions. [2021-07-06 20:20:27,357 INFO L587 BuchiCegarLoop]: Abstraction has 155 states and 217 transitions. [2021-07-06 20:20:27,357 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:20:27,357 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 155 states and 217 transitions. [2021-07-06 20:20:27,358 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 106 [2021-07-06 20:20:27,358 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:20:27,358 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:20:27,360 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:20:27,360 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] [2021-07-06 20:20:27,360 INFO L791 eck$LassoCheckResult]: Stem: 603#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 529#L-1 havoc main_#res;havoc main_#t~ret8, main_~retValue_acc~2, main_~tmp~0;havoc main_~retValue_acc~2;havoc main_~tmp~0; 530#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 562#L75 main_#t~ret8 := valid_product_#res;main_~tmp~0 := main_#t~ret8;havoc main_#t~ret8; 549#L169 assume 0 != main_~tmp~0; 550#L143 ~methAndRunningLastTime~0 := 0; 595#L192 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 520#L203-1 [2021-07-06 20:20:27,360 INFO L793 eck$LassoCheckResult]: Loop: 520#L203-1 assume !false; 533#L552 assume test_~splverifierCounter~0 < 4; 534#L553 test_~tmp~6 := test_#t~nondet42;havoc test_#t~nondet42; 601#L561 assume !(0 != test_~tmp~6); 592#L561-1 test_~tmp___0~3 := test_#t~nondet43;havoc test_#t~nondet43; 551#L571 assume !(0 != test_~tmp___0~3); 553#L571-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 554#L581 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 594#L589-2 assume !(0 != ~pumpRunning~0); 523#L343 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 524#L401 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 573#L375-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret40, isHighWaterLevel_~retValue_acc~9, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~9;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 574#L313-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 535#L318-1 isHighWaterLevel_#t~ret40 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret40;havoc isHighWaterLevel_#t~ret40; 536#L503-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 622#L503-5 isHighWaterLevel_~retValue_acc~9 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~9; 607#L509-1 processEnvironment__wrappee__highWaterSensor_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret21;havoc processEnvironment__wrappee__highWaterSensor_#t~ret21; 608#L379-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 580#L350 havoc __utac_acc__Specification2_spec__2_#t~ret9, __utac_acc__Specification2_spec__2_#t~ret10, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 568#L273 __utac_acc__Specification2_spec__2_#t~ret9 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret9;havoc __utac_acc__Specification2_spec__2_#t~ret9; 569#L203 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 520#L203-1 [2021-07-06 20:20:27,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:20:27,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-07-06 20:20:27,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:20:27,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485892381] [2021-07-06 20:20:27,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:20:27,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:20:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:20:27,405 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:20:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:20:27,446 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:20:27,460 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:20:27,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:20:27,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1049372309, now seen corresponding path program 1 times [2021-07-06 20:20:27,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:20:27,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21751067] [2021-07-06 20:20:27,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:20:27,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:20:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:20:27,471 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:20:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:20:27,475 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:20:27,478 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:20:27,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:20:27,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1472453361, now seen corresponding path program 1 times [2021-07-06 20:20:27,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:20:27,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109281702] [2021-07-06 20:20:27,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:20:27,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:20:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:20:27,516 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:20:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:20:27,547 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:20:27,561 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:20:27,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:20:27,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-07-06 20:21:08,310 WARN L205 SmtUtils]: Spent 40.61 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-07-06 20:21:08,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:21:08,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2130 [2021-07-06 20:21:29,146 WARN L205 SmtUtils]: Spent 20.73 s on a formula simplification that was a NOOP. DAG size: 435 [2021-07-06 20:21:29,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:21:29 BoogieIcfgContainer [2021-07-06 20:21:29,261 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:21:29,262 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:21:29,262 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:21:29,262 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:21:29,262 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:20:26" (3/4) ... [2021-07-06 20:21:29,264 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:21:29,295 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:21:29,296 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:21:29,296 INFO L168 Benchmark]: Toolchain (without parser) took 63931.04 ms. Allocated memory was 58.7 MB in the beginning and 151.0 MB in the end (delta: 92.3 MB). Free memory was 36.4 MB in the beginning and 121.9 MB in the end (delta: -85.5 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. [2021-07-06 20:21:29,297 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 58.7 MB. Free memory is still 39.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:21:29,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.87 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 36.2 MB in the beginning and 54.4 MB in the end (delta: -18.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-06 20:21:29,297 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.81 ms. Allocated memory is still 81.8 MB. Free memory was 54.4 MB in the beginning and 50.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:21:29,297 INFO L168 Benchmark]: Boogie Preprocessor took 55.43 ms. Allocated memory is still 81.8 MB. Free memory was 50.6 MB in the beginning and 48.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:21:29,298 INFO L168 Benchmark]: RCFGBuilder took 648.09 ms. Allocated memory is still 81.8 MB. Free memory was 48.0 MB in the beginning and 58.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2021-07-06 20:21:29,298 INFO L168 Benchmark]: BuchiAutomizer took 62718.87 ms. Allocated memory was 81.8 MB in the beginning and 151.0 MB in the end (delta: 69.2 MB). Free memory was 58.1 MB in the beginning and 124.0 MB in the end (delta: -65.9 MB). Peak memory consumption was 93.9 MB. Max. memory is 16.1 GB. [2021-07-06 20:21:29,298 INFO L168 Benchmark]: Witness Printer took 34.01 ms. Allocated memory is still 151.0 MB. Free memory was 124.0 MB in the beginning and 121.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:21:29,300 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 58.7 MB. Free memory is still 39.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 406.87 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 36.2 MB in the beginning and 54.4 MB in the end (delta: -18.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.81 ms. Allocated memory is still 81.8 MB. Free memory was 54.4 MB in the beginning and 50.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.43 ms. Allocated memory is still 81.8 MB. Free memory was 50.6 MB in the beginning and 48.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 648.09 ms. Allocated memory is still 81.8 MB. Free memory was 48.0 MB in the beginning and 58.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 62718.87 ms. Allocated memory was 81.8 MB in the beginning and 151.0 MB in the end (delta: 69.2 MB). Free memory was 58.1 MB in the beginning and 124.0 MB in the end (delta: -65.9 MB). Peak memory consumption was 93.9 MB. Max. memory is 16.1 GB. * Witness Printer took 34.01 ms. Allocated memory is still 151.0 MB. Free memory was 124.0 MB in the beginning and 121.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 155 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 62.6s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 62.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 20.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 155 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 337 SDtfs, 278 SDslu, 72 SDs, 0 SdLazy, 33 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 92.0ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 551]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=17902} State at position 1 is {NULL=0, NULL=0, NULL=17902, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5287604f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@38775adc=61, NULL=17920, NULL=17919, methaneLevelCritical=0, NULL=0, NULL=17930, tmp=0, retValue_acc=0, NULL=17921, NULL=0, tmp___1=0, NULL=17922, NULL=0, NULL=17929, NULL=17903, cleanupTimeShifts=4, NULL=17923, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@714b3392=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@47c1743d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f0691be=0, NULL=0, waterLevel=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@46d454b0=0, \result=1, head=0, pumpRunning=0, tmp=1, retValue_acc=1, NULL=17908, NULL=0, NULL=0, \result=1, NULL=0, tmp=1, NULL=0, NULL=17905, NULL=0, NULL=0, NULL=0, tmp___0=0, NULL=0, methAndRunningLastTime=0, NULL=17904, NULL=17907, tmp=0, head=0, NULL=17926, NULL=0, NULL=0, NULL=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@714f7062=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@61d431b3=0, NULL=17918, tmp___0=0, NULL=0, NULL=0, NULL=17906, NULL=0, NULL=0, NULL=17927, NULL=17911, tmp=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=17909, NULL=0, retValue_acc=0, NULL=17912, \result=0, NULL=17915, NULL=17928, \result=0, NULL=17916, NULL=0, NULL=0, NULL=17917, tmp___0=0, NULL=17925, NULL=17913, retValue_acc=1, tmp___2=61, splverifierCounter=0, NULL=0, \result=0, NULL=17914, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@171dfae8=0, NULL=17924, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6f50dcff=0, NULL=17910} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L80] int cleanupTimeShifts = 4; [L186] int methAndRunningLastTime ; [L230] int waterLevel = 1; [L231] int methaneLevelCritical = 0; [L336] int pumpRunning = 0; [L337] int systemActive = 1; [L777] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L160] int retValue_acc ; [L161] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L167] tmp = valid_product() [L169] COND TRUE \read(tmp) [L191] methAndRunningLastTime = 0 [L542] int splverifierCounter ; [L543] int tmp ; [L544] int tmp___0 ; [L545] int tmp___1 ; [L546] int tmp___2 ; [L549] splverifierCounter = 0 Loop: [L551] COND TRUE 1 [L553] COND TRUE splverifierCounter < 4 [L559] tmp = __VERIFIER_nondet_int() [L561] COND FALSE !(\read(tmp)) [L569] tmp___0 = __VERIFIER_nondet_int() [L571] COND FALSE !(\read(tmp___0)) [L579] tmp___2 = __VERIFIER_nondet_int() [L581] COND TRUE \read(tmp___2) [L536] systemActive = 1 [L343] COND FALSE !(\read(pumpRunning)) [L350] COND TRUE \read(systemActive) [L398] int tmp ; [L401] COND FALSE !(\read(pumpRunning)) [L372] int tmp ; [L375] COND TRUE ! pumpRunning [L495] int retValue_acc ; [L496] int tmp ; [L497] int tmp___0 ; [L310] int retValue_acc ; [L313] COND TRUE waterLevel < 2 [L314] retValue_acc = 1 [L315] return (retValue_acc); [L501] tmp = isHighWaterSensorDry() [L503] COND TRUE \read(tmp) [L504] tmp___0 = 0 [L508] retValue_acc = tmp___0 [L509] return (retValue_acc); [L377] tmp = isHighWaterLevel() [L379] COND FALSE !(\read(tmp)) [L196] int tmp ; [L197] int tmp___0 ; [L269] int retValue_acc ; [L272] retValue_acc = methaneLevelCritical [L273] return (retValue_acc); [L201] tmp = isMethaneLevelCritical() [L203] COND FALSE !(\read(tmp)) [L219] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:21:29,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...