./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6487936e-bd7e-469b-a860-756a453fae43/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6487936e-bd7e-469b-a860-756a453fae43/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6487936e-bd7e-469b-a860-756a453fae43/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6487936e-bd7e-469b-a860-756a453fae43/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6487936e-bd7e-469b-a860-756a453fae43/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6487936e-bd7e-469b-a860-756a453fae43/bin/uautomizer-GMMbpWq8iD --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 69f20c6619059452dea710c235d91f0e8ca980fcacc48c7e37668ab8a6397c50 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-b2eff8b [2021-10-28 23:05:16,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:05:16,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:05:16,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:05:16,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:05:16,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:05:16,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:05:16,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:05:16,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:05:16,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:05:16,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:05:16,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:05:16,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:05:16,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:05:16,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:05:16,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:05:16,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:05:16,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:05:16,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:05:16,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:05:16,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:05:16,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:05:16,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:05:16,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:05:16,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:05:16,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:05:16,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:05:16,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:05:16,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:05:16,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:05:16,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:05:16,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:05:16,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:05:16,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:05:16,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:05:16,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:05:16,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:05:16,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:05:16,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:05:16,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:05:16,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:05:16,647 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6487936e-bd7e-469b-a860-756a453fae43/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 23:05:16,672 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:05:16,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:05:16,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:05:16,673 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:05:16,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:05:16,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:05:16,675 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:05:16,675 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:05:16,675 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:05:16,676 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:05:16,676 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:05:16,676 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:05:16,676 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:05:16,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:05:16,677 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:05:16,677 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:05:16,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:05:16,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:05:16,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:05:16,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:05:16,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:05:16,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:05:16,678 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:05:16,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:05:16,679 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:05:16,679 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:05:16,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:05:16,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:05:16,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:05:16,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:05:16,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:05:16,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:05:16,682 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:05:16,682 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6487936e-bd7e-469b-a860-756a453fae43/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6487936e-bd7e-469b-a860-756a453fae43/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69f20c6619059452dea710c235d91f0e8ca980fcacc48c7e37668ab8a6397c50 [2021-10-28 23:05:16,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:05:16,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:05:16,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:05:16,979 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:05:16,980 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:05:16,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6487936e-bd7e-469b-a860-756a453fae43/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c [2021-10-28 23:05:17,067 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6487936e-bd7e-469b-a860-756a453fae43/bin/uautomizer-GMMbpWq8iD/data/2aa7e9451/96d4796e91ea40a1917e901693d5a621/FLAGf59bed028 [2021-10-28 23:05:17,604 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:05:17,604 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6487936e-bd7e-469b-a860-756a453fae43/sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c [2021-10-28 23:05:17,616 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6487936e-bd7e-469b-a860-756a453fae43/bin/uautomizer-GMMbpWq8iD/data/2aa7e9451/96d4796e91ea40a1917e901693d5a621/FLAGf59bed028 [2021-10-28 23:05:17,916 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6487936e-bd7e-469b-a860-756a453fae43/bin/uautomizer-GMMbpWq8iD/data/2aa7e9451/96d4796e91ea40a1917e901693d5a621 [2021-10-28 23:05:17,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:05:17,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:05:17,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:05:17,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:05:17,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:05:17,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:05:17" (1/1) ... [2021-10-28 23:05:17,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49071bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:17, skipping insertion in model container [2021-10-28 23:05:17,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:05:17" (1/1) ... [2021-10-28 23:05:17,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:05:18,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:05:18,257 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6487936e-bd7e-469b-a860-756a453fae43/sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c[11292,11305] [2021-10-28 23:05:18,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:05:18,310 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:05:18,376 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6487936e-bd7e-469b-a860-756a453fae43/sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c[11292,11305] [2021-10-28 23:05:18,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:05:18,442 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:05:18,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:18 WrapperNode [2021-10-28 23:05:18,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:05:18,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:05:18,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:05:18,445 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:05:18,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:18" (1/1) ... [2021-10-28 23:05:18,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:18" (1/1) ... [2021-10-28 23:05:18,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:05:18,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:05:18,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:05:18,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:05:18,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:18" (1/1) ... [2021-10-28 23:05:18,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:18" (1/1) ... [2021-10-28 23:05:18,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:18" (1/1) ... [2021-10-28 23:05:18,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:18" (1/1) ... [2021-10-28 23:05:18,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:18" (1/1) ... [2021-10-28 23:05:18,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:18" (1/1) ... [2021-10-28 23:05:18,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:18" (1/1) ... [2021-10-28 23:05:18,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:05:18,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:05:18,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:05:18,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:05:18,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:18" (1/1) ... [2021-10-28 23:05:18,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:05:18,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6487936e-bd7e-469b-a860-756a453fae43/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:05:18,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6487936e-bd7e-469b-a860-756a453fae43/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:05:18,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6487936e-bd7e-469b-a860-756a453fae43/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:05:18,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:05:18,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:05:18,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:05:18,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:05:19,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:05:19,667 INFO L299 CfgBuilder]: Removed 194 assume(true) statements. [2021-10-28 23:05:19,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:05:19 BoogieIcfgContainer [2021-10-28 23:05:19,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:05:19,671 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:05:19,671 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:05:19,674 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:05:19,675 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:05:19,675 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:05:17" (1/3) ... [2021-10-28 23:05:19,677 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3dcb42ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:05:19, skipping insertion in model container [2021-10-28 23:05:19,677 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:05:19,677 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:05:18" (2/3) ... [2021-10-28 23:05:19,677 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3dcb42ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:05:19, skipping insertion in model container [2021-10-28 23:05:19,677 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:05:19,678 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:05:19" (3/3) ... [2021-10-28 23:05:19,679 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product45.cil.c [2021-10-28 23:05:19,721 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:05:19,721 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:05:19,722 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:05:19,722 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:05:19,722 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:05:19,722 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:05:19,722 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:05:19,722 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:05:19,740 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) [2021-10-28 23:05:19,766 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 83 [2021-10-28 23:05:19,767 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:05:19,767 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:05:19,775 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:19,775 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:19,775 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:05:19,776 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) [2021-10-28 23:05:19,784 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 83 [2021-10-28 23:05:19,784 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:05:19,784 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:05:19,785 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:19,786 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:19,790 INFO L791 eck$LassoCheckResult]: Stem: 119#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; 46#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; 118#L916true 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; 90#L924true main_#t~ret42 := valid_product_#res;main_~tmp~3 := main_#t~ret42;havoc main_#t~ret42; 88#L517true assume 0 != main_~tmp~3; 67#L488true ~methAndRunningLastTime~0 := 0; 73#L935true 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; 85#L946-1true [2021-10-28 23:05:19,791 INFO L793 eck$LassoCheckResult]: Loop: 85#L946-1true assume !false; 78#L745true assume test_~splverifierCounter~0 < 4; 91#L746true test_~tmp~8 := test_#t~nondet64;havoc test_#t~nondet64; 6#L754true assume !(0 != test_~tmp~8); 12#L754-1true test_~tmp___0~1 := test_#t~nondet65;havoc test_#t~nondet65; 127#L764true assume !(0 != test_~tmp___0~1); 114#L764-1true test_~tmp___2~0 := test_#t~nondet66;havoc test_#t~nondet66; 93#L774true assume 0 != test_~tmp___2~0; 87#L780-2true assume !(0 != ~pumpRunning~0); 40#L546true assume !(0 != ~systemActive~0); 82#L553true 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; 130#L843-3true __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; 125#L946true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 85#L946-1true [2021-10-28 23:05:19,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:19,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-10-28 23:05:19,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:19,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046099573] [2021-10-28 23:05:19,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:19,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:20,042 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:20,175 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:20,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:20,182 INFO L85 PathProgramCache]: Analyzing trace with hash 4969610, now seen corresponding path program 1 times [2021-10-28 23:05:20,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:20,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424760510] [2021-10-28 23:05:20,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:20,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:20,203 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:20,223 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:20,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:20,225 INFO L85 PathProgramCache]: Analyzing trace with hash 838266116, now seen corresponding path program 1 times [2021-10-28 23:05:20,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:20,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250990270] [2021-10-28 23:05:20,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:20,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:20,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:20,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:20,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250990270] [2021-10-28 23:05:20,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250990270] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:20,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:20,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:05:20,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13879989] [2021-10-28 23:05:20,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:20,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:05:20,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:05:20,499 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) [2021-10-28 23:05:20,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:20,728 INFO L93 Difference]: Finished difference Result 130 states and 185 transitions. [2021-10-28 23:05:20,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:05:20,730 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 185 transitions. [2021-10-28 23:05:20,734 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2021-10-28 23:05:20,740 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 123 states and 178 transitions. [2021-10-28 23:05:20,741 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 123 [2021-10-28 23:05:20,742 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 123 [2021-10-28 23:05:20,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 178 transitions. [2021-10-28 23:05:20,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:20,743 INFO L681 BuchiCegarLoop]: Abstraction has 123 states and 178 transitions. [2021-10-28 23:05:20,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states and 178 transitions. [2021-10-28 23:05:20,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-10-28 23:05:20,775 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) [2021-10-28 23:05:20,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 178 transitions. [2021-10-28 23:05:20,777 INFO L704 BuchiCegarLoop]: Abstraction has 123 states and 178 transitions. [2021-10-28 23:05:20,778 INFO L587 BuchiCegarLoop]: Abstraction has 123 states and 178 transitions. [2021-10-28 23:05:20,778 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:05:20,778 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 123 states and 178 transitions. [2021-10-28 23:05:20,780 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2021-10-28 23:05:20,780 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:05:20,781 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:05:20,781 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:20,781 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:20,782 INFO L791 eck$LassoCheckResult]: Stem: 399#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; 347#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; 348#L916 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; 389#L924 main_#t~ret42 := valid_product_#res;main_~tmp~3 := main_#t~ret42;havoc main_#t~ret42; 388#L517 assume 0 != main_~tmp~3; 374#L488 ~methAndRunningLastTime~0 := 0; 375#L935 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; 338#L946-1 [2021-10-28 23:05:20,782 INFO L793 eck$LassoCheckResult]: Loop: 338#L946-1 assume !false; 382#L745 assume test_~splverifierCounter~0 < 4; 383#L746 test_~tmp~8 := test_#t~nondet64;havoc test_#t~nondet64; 282#L754 assume !(0 != test_~tmp~8); 284#L754-1 test_~tmp___0~1 := test_#t~nondet65;havoc test_#t~nondet65; 296#L764 assume !(0 != test_~tmp___0~1); 398#L764-1 test_~tmp___2~0 := test_#t~nondet66;havoc test_#t~nondet66; 392#L774 assume 0 != test_~tmp___2~0; 281#L780-2 assume !(0 != ~pumpRunning~0); 340#L546 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret44, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 341#L604 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret43, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 353#L578-1 assume !(0 == ~pumpRunning~0); 332#L553 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; 386#L843-3 __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; 400#L946 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 338#L946-1 [2021-10-28 23:05:20,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:20,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-10-28 23:05:20,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:20,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225187756] [2021-10-28 23:05:20,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:20,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:20,834 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:20,898 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:20,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:20,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1695508204, now seen corresponding path program 1 times [2021-10-28 23:05:20,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:20,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198229095] [2021-10-28 23:05:20,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:20,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:20,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:20,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:20,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198229095] [2021-10-28 23:05:20,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198229095] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:20,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:20,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:05:20,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927237391] [2021-10-28 23:05:20,918 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:05:20,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:20,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:05:20,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:05:20,920 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) [2021-10-28 23:05:21,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:21,008 INFO L93 Difference]: Finished difference Result 167 states and 232 transitions. [2021-10-28 23:05:21,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:05:21,010 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 167 states and 232 transitions. [2021-10-28 23:05:21,015 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 114 [2021-10-28 23:05:21,022 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 167 states to 167 states and 232 transitions. [2021-10-28 23:05:21,022 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 167 [2021-10-28 23:05:21,024 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 167 [2021-10-28 23:05:21,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 167 states and 232 transitions. [2021-10-28 23:05:21,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:21,030 INFO L681 BuchiCegarLoop]: Abstraction has 167 states and 232 transitions. [2021-10-28 23:05:21,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states and 232 transitions. [2021-10-28 23:05:21,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-10-28 23:05:21,044 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) [2021-10-28 23:05:21,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 232 transitions. [2021-10-28 23:05:21,046 INFO L704 BuchiCegarLoop]: Abstraction has 167 states and 232 transitions. [2021-10-28 23:05:21,047 INFO L587 BuchiCegarLoop]: Abstraction has 167 states and 232 transitions. [2021-10-28 23:05:21,047 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:05:21,047 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 232 transitions. [2021-10-28 23:05:21,050 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 114 [2021-10-28 23:05:21,050 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:05:21,050 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:05:21,056 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:21,056 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] [2021-10-28 23:05:21,056 INFO L791 eck$LassoCheckResult]: Stem: 701#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; 645#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; 646#L916 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; 687#L924 main_#t~ret42 := valid_product_#res;main_~tmp~3 := main_#t~ret42;havoc main_#t~ret42; 686#L517 assume 0 != main_~tmp~3; 671#L488 ~methAndRunningLastTime~0 := 0; 672#L935 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; 636#L946-1 [2021-10-28 23:05:21,057 INFO L793 eck$LassoCheckResult]: Loop: 636#L946-1 assume !false; 680#L745 assume test_~splverifierCounter~0 < 4; 681#L746 test_~tmp~8 := test_#t~nondet64;havoc test_#t~nondet64; 578#L754 assume !(0 != test_~tmp~8); 580#L754-1 test_~tmp___0~1 := test_#t~nondet65;havoc test_#t~nondet65; 591#L764 assume !(0 != test_~tmp___0~1); 698#L764-1 test_~tmp___2~0 := test_#t~nondet66;havoc test_#t~nondet66; 690#L774 assume 0 != test_~tmp___2~0; 577#L780-2 assume !(0 != ~pumpRunning~0); 638#L546 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret44, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 639#L604 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret43, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 651#L578-1 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; 643#L883-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 644#L888-1 isHighWaterLevel_#t~ret63 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret63;havoc isHighWaterLevel_#t~ret63; 597#L723-3 assume !(0 != isHighWaterLevel_~tmp~7);isHighWaterLevel_~tmp___0~0 := 1; 598#L723-5 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 653#L729-1 processEnvironment__wrappee__methaneQuery_#t~ret43 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~4 := processEnvironment__wrappee__methaneQuery_#t~ret43;havoc processEnvironment__wrappee__methaneQuery_#t~ret43; 631#L582-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~4); 629#L553 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; 684#L843-3 __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; 702#L946 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 636#L946-1 [2021-10-28 23:05:21,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:21,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-10-28 23:05:21,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:21,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008971692] [2021-10-28 23:05:21,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:21,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:21,132 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:21,180 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:21,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:21,181 INFO L85 PathProgramCache]: Analyzing trace with hash -434026982, now seen corresponding path program 1 times [2021-10-28 23:05:21,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:21,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562537507] [2021-10-28 23:05:21,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:21,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:05:21,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:05:21,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:05:21,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562537507] [2021-10-28 23:05:21,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562537507] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:05:21,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:05:21,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:05:21,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506150508] [2021-10-28 23:05:21,252 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:05:21,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:05:21,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:05:21,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:05:21,254 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) [2021-10-28 23:05:21,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:05:21,392 INFO L93 Difference]: Finished difference Result 509 states and 697 transitions. [2021-10-28 23:05:21,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:05:21,392 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 509 states and 697 transitions. [2021-10-28 23:05:21,401 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 364 [2021-10-28 23:05:21,406 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 509 states to 509 states and 697 transitions. [2021-10-28 23:05:21,407 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 509 [2021-10-28 23:05:21,408 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 509 [2021-10-28 23:05:21,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 509 states and 697 transitions. [2021-10-28 23:05:21,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:05:21,411 INFO L681 BuchiCegarLoop]: Abstraction has 509 states and 697 transitions. [2021-10-28 23:05:21,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states and 697 transitions. [2021-10-28 23:05:21,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 185. [2021-10-28 23:05:21,439 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) [2021-10-28 23:05:21,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 250 transitions. [2021-10-28 23:05:21,440 INFO L704 BuchiCegarLoop]: Abstraction has 185 states and 250 transitions. [2021-10-28 23:05:21,440 INFO L587 BuchiCegarLoop]: Abstraction has 185 states and 250 transitions. [2021-10-28 23:05:21,440 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:05:21,441 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 185 states and 250 transitions. [2021-10-28 23:05:21,442 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 126 [2021-10-28 23:05:21,442 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:05:21,442 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:05:21,444 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:05:21,445 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] [2021-10-28 23:05:21,445 INFO L791 eck$LassoCheckResult]: Stem: 1404#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; 1337#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; 1338#L916 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; 1385#L924 main_#t~ret42 := valid_product_#res;main_~tmp~3 := main_#t~ret42;havoc main_#t~ret42; 1384#L517 assume 0 != main_~tmp~3; 1366#L488 ~methAndRunningLastTime~0 := 0; 1367#L935 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; 1328#L946-1 [2021-10-28 23:05:21,445 INFO L793 eck$LassoCheckResult]: Loop: 1328#L946-1 assume !false; 1376#L745 assume test_~splverifierCounter~0 < 4; 1377#L746 test_~tmp~8 := test_#t~nondet64;havoc test_#t~nondet64; 1268#L754 assume !(0 != test_~tmp~8); 1270#L754-1 test_~tmp___0~1 := test_#t~nondet65;havoc test_#t~nondet65; 1281#L764 assume !(0 != test_~tmp___0~1); 1402#L764-1 test_~tmp___2~0 := test_#t~nondet66;havoc test_#t~nondet66; 1389#L774 assume 0 != test_~tmp___2~0; 1267#L780-2 assume !(0 != ~pumpRunning~0); 1330#L546 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret44, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1331#L604 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret43, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 1345#L578-1 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; 1335#L883-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 1336#L888-1 isHighWaterLevel_#t~ret63 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret63;havoc isHighWaterLevel_#t~ret63; 1287#L723-3 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~0 := 0; 1289#L723-5 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 1347#L729-1 processEnvironment__wrappee__methaneQuery_#t~ret43 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~4 := processEnvironment__wrappee__methaneQuery_#t~ret43;havoc processEnvironment__wrappee__methaneQuery_#t~ret43; 1348#L582-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~4); 1321#L553 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; 1381#L843-3 __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; 1407#L946 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 1328#L946-1 [2021-10-28 23:05:21,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:21,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-10-28 23:05:21,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:21,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929448890] [2021-10-28 23:05:21,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:21,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:21,504 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:21,574 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:21,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:21,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2085932952, now seen corresponding path program 1 times [2021-10-28 23:05:21,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:21,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458965638] [2021-10-28 23:05:21,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:21,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:21,582 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:21,591 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:05:21,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:05:21,592 INFO L85 PathProgramCache]: Analyzing trace with hash -435892718, now seen corresponding path program 1 times [2021-10-28 23:05:21,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:05:21,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262451344] [2021-10-28 23:05:21,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:05:21,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:05:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:21,682 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:05:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:05:21,741 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:06:20,820 WARN L207 SmtUtils]: Spent 58.77 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-10-28 23:07:22,017 WARN L207 SmtUtils]: Spent 30.46 s on a formula simplification that was a NOOP. DAG size: 435 [2021-10-28 23:07:22,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:07:22 BoogieIcfgContainer [2021-10-28 23:07:22,155 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:07:22,156 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:07:22,156 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:07:22,156 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:07:22,157 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:05:19" (3/4) ... [2021-10-28 23:07:22,160 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 23:07:22,207 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6487936e-bd7e-469b-a860-756a453fae43/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:07:22,207 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:07:22,208 INFO L168 Benchmark]: Toolchain (without parser) took 124288.15 ms. Allocated memory was 94.4 MB in the beginning and 138.4 MB in the end (delta: 44.0 MB). Free memory was 54.2 MB in the beginning and 67.6 MB in the end (delta: -13.4 MB). Peak memory consumption was 29.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:07:22,209 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 94.4 MB. Free memory was 71.7 MB in the beginning and 71.6 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:07:22,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 521.88 ms. Allocated memory is still 94.4 MB. Free memory was 54.1 MB in the beginning and 62.5 MB in the end (delta: -8.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:07:22,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.78 ms. Allocated memory is still 94.4 MB. Free memory was 62.5 MB in the beginning and 58.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:07:22,210 INFO L168 Benchmark]: Boogie Preprocessor took 76.62 ms. Allocated memory is still 94.4 MB. Free memory was 58.6 MB in the beginning and 55.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:07:22,211 INFO L168 Benchmark]: RCFGBuilder took 1076.81 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 55.6 MB in the beginning and 69.9 MB in the end (delta: -14.2 MB). Peak memory consumption was 33.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:07:22,211 INFO L168 Benchmark]: BuchiAutomizer took 122484.76 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 69.9 MB in the beginning and 69.7 MB in the end (delta: 167.7 kB). Peak memory consumption was 73.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:07:22,212 INFO L168 Benchmark]: Witness Printer took 51.60 ms. Allocated memory is still 138.4 MB. Free memory was 69.7 MB in the beginning and 67.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:07:22,215 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 94.4 MB. Free memory was 71.7 MB in the beginning and 71.6 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 521.88 ms. Allocated memory is still 94.4 MB. Free memory was 54.1 MB in the beginning and 62.5 MB in the end (delta: -8.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.78 ms. Allocated memory is still 94.4 MB. Free memory was 62.5 MB in the beginning and 58.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.62 ms. Allocated memory is still 94.4 MB. Free memory was 58.6 MB in the beginning and 55.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1076.81 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 55.6 MB in the beginning and 69.9 MB in the end (delta: -14.2 MB). Peak memory consumption was 33.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 122484.76 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 69.9 MB in the beginning and 69.7 MB in the end (delta: 167.7 kB). Peak memory consumption was 73.6 MB. Max. memory is 16.1 GB. * Witness Printer took 51.60 ms. Allocated memory is still 138.4 MB. Free memory was 69.7 MB in the beginning and 67.6 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 122.4s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 121.7s. 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 0.0s 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, 0.2s 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: 744]: 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@5e59142c=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@4f18ea1b=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@6f815595=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@a9ead65=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@60d35384=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@577c8b8e=0, NULL=155, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f806523=68, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c1b4f5a=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@52fb145a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@178ee3b4=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: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L425] int cleanupTimeShifts = 4; [L538] int pumpRunning = 0; [L539] int systemActive = 1; [L800] int waterLevel = 1; [L801] int methaneLevelCritical = 0; [L929] int methAndRunningLastTime ; [L508] int retValue_acc ; [L509] int tmp ; [L920] int retValue_acc ; [L923] retValue_acc = 1 [L924] return (retValue_acc); [L515] tmp = valid_product() [L517] COND TRUE \read(tmp) [L934] methAndRunningLastTime = 0 [L735] int splverifierCounter ; [L736] int tmp ; [L737] int tmp___0 ; [L738] int tmp___1 ; [L739] int tmp___2 ; [L742] splverifierCounter = 0 Loop: [L744] COND TRUE 1 [L746] COND TRUE splverifierCounter < 4 [L752] tmp = __VERIFIER_nondet_int() [L754] COND FALSE !(\read(tmp)) [L762] tmp___0 = __VERIFIER_nondet_int() [L764] COND FALSE !(\read(tmp___0)) [L772] tmp___2 = __VERIFIER_nondet_int() [L774] COND TRUE \read(tmp___2) [L546] COND FALSE !(\read(pumpRunning)) [L553] COND TRUE \read(systemActive) [L601] int tmp ; [L604] COND FALSE !(\read(pumpRunning)) [L575] int tmp ; [L578] COND TRUE ! pumpRunning [L715] int retValue_acc ; [L716] int tmp ; [L717] int tmp___0 ; [L880] int retValue_acc ; [L883] COND TRUE waterLevel < 2 [L884] retValue_acc = 1 [L885] return (retValue_acc); [L721] tmp = isHighWaterSensorDry() [L723] COND TRUE \read(tmp) [L724] tmp___0 = 0 [L728] retValue_acc = tmp___0 [L729] return (retValue_acc); [L580] tmp = isHighWaterLevel() [L582] COND FALSE !(\read(tmp)) [L939] int tmp ; [L940] int tmp___0 ; [L839] int retValue_acc ; [L842] retValue_acc = methaneLevelCritical [L843] return (retValue_acc); [L944] tmp = isMethaneLevelCritical() [L946] COND FALSE !(\read(tmp)) [L962] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:07:22,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6487936e-bd7e-469b-a860-756a453fae43/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...