./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b844e4fb-5b10-42e0-b516-8d2e76faab99/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b844e4fb-5b10-42e0-b516-8d2e76faab99/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b844e4fb-5b10-42e0-b516-8d2e76faab99/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b844e4fb-5b10-42e0-b516-8d2e76faab99/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b844e4fb-5b10-42e0-b516-8d2e76faab99/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b844e4fb-5b10-42e0-b516-8d2e76faab99/bin/uautomizer-j4sWxH34Be --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 6f5537df08751fc2a74719abc7c5b127397286d2c5902c5d863d2b34b0e39614 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-e943c26 [2021-10-21 19:39:24,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:39:24,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:39:24,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:39:24,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:39:24,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:39:24,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:39:24,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:39:24,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:39:24,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:39:24,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:39:24,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:39:24,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:39:24,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:39:24,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:39:24,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:39:24,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:39:24,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:39:24,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:39:24,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:39:24,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:39:24,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:39:24,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:39:24,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:39:24,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:39:24,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:39:24,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:39:24,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:39:24,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:39:24,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:39:24,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:39:24,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:39:24,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:39:24,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:39:24,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:39:24,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:39:24,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:39:24,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:39:24,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:39:24,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:39:24,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:39:24,610 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b844e4fb-5b10-42e0-b516-8d2e76faab99/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:39:24,654 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:39:24,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:39:24,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:39:24,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:39:24,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:39:24,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:39:24,658 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:39:24,658 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:39:24,658 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:39:24,658 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:39:24,660 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:39:24,660 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:39:24,660 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:39:24,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:39:24,661 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:39:24,661 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:39:24,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:39:24,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:39:24,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:39:24,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:39:24,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:39:24,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:39:24,663 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:39:24,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:39:24,663 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:39:24,663 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:39:24,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:39:24,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:39:24,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:39:24,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:39:24,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:39:24,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:39:24,667 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:39:24,668 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_b844e4fb-5b10-42e0-b516-8d2e76faab99/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b844e4fb-5b10-42e0-b516-8d2e76faab99/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f5537df08751fc2a74719abc7c5b127397286d2c5902c5d863d2b34b0e39614 [2021-10-21 19:39:24,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:39:24,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:39:24,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:39:24,978 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:39:24,979 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:39:24,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b844e4fb-5b10-42e0-b516-8d2e76faab99/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec3_product22.cil.c [2021-10-21 19:39:25,072 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b844e4fb-5b10-42e0-b516-8d2e76faab99/bin/uautomizer-j4sWxH34Be/data/415754c64/9d9f482ad77d41d796fc49b15fbac704/FLAG5838749e2 [2021-10-21 19:39:25,578 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:39:25,579 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b844e4fb-5b10-42e0-b516-8d2e76faab99/sv-benchmarks/c/product-lines/minepump_spec3_product22.cil.c [2021-10-21 19:39:25,595 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b844e4fb-5b10-42e0-b516-8d2e76faab99/bin/uautomizer-j4sWxH34Be/data/415754c64/9d9f482ad77d41d796fc49b15fbac704/FLAG5838749e2 [2021-10-21 19:39:25,884 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b844e4fb-5b10-42e0-b516-8d2e76faab99/bin/uautomizer-j4sWxH34Be/data/415754c64/9d9f482ad77d41d796fc49b15fbac704 [2021-10-21 19:39:25,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:39:25,887 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:39:25,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:39:25,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:39:25,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:39:25,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:39:25" (1/1) ... [2021-10-21 19:39:25,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@349f2b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:25, skipping insertion in model container [2021-10-21 19:39:25,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:39:25" (1/1) ... [2021-10-21 19:39:25,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:39:25,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:39:26,159 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_b844e4fb-5b10-42e0-b516-8d2e76faab99/sv-benchmarks/c/product-lines/minepump_spec3_product22.cil.c[2984,2997] [2021-10-21 19:39:26,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:39:26,251 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:39:26,271 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_b844e4fb-5b10-42e0-b516-8d2e76faab99/sv-benchmarks/c/product-lines/minepump_spec3_product22.cil.c[2984,2997] [2021-10-21 19:39:26,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:39:26,367 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:39:26,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:26 WrapperNode [2021-10-21 19:39:26,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:39:26,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:39:26,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:39:26,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:39:26,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:26" (1/1) ... [2021-10-21 19:39:26,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:26" (1/1) ... [2021-10-21 19:39:26,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:39:26,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:39:26,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:39:26,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:39:26,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:26" (1/1) ... [2021-10-21 19:39:26,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:26" (1/1) ... [2021-10-21 19:39:26,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:26" (1/1) ... [2021-10-21 19:39:26,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:26" (1/1) ... [2021-10-21 19:39:26,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:26" (1/1) ... [2021-10-21 19:39:26,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:26" (1/1) ... [2021-10-21 19:39:26,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:26" (1/1) ... [2021-10-21 19:39:26,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:39:26,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:39:26,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:39:26,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:39:26,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:26" (1/1) ... [2021-10-21 19:39:26,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:39:26,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b844e4fb-5b10-42e0-b516-8d2e76faab99/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:39:26,597 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b844e4fb-5b10-42e0-b516-8d2e76faab99/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:39:26,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b844e4fb-5b10-42e0-b516-8d2e76faab99/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:39:26,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:39:26,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:39:26,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:39:26,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:39:27,547 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:39:27,547 INFO L299 CfgBuilder]: Removed 164 assume(true) statements. [2021-10-21 19:39:27,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:39:27 BoogieIcfgContainer [2021-10-21 19:39:27,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:39:27,551 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:39:27,551 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:39:27,555 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:39:27,555 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:39:27,556 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:39:25" (1/3) ... [2021-10-21 19:39:27,557 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@37fa31af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:39:27, skipping insertion in model container [2021-10-21 19:39:27,557 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:39:27,558 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:39:26" (2/3) ... [2021-10-21 19:39:27,558 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@37fa31af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:39:27, skipping insertion in model container [2021-10-21 19:39:27,558 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:39:27,559 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:39:27" (3/3) ... [2021-10-21 19:39:27,560 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product22.cil.c [2021-10-21 19:39:27,604 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:39:27,605 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:39:27,605 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:39:27,605 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:39:27,605 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:39:27,605 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:39:27,606 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:39:27,606 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:39:27,633 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 108 states, 107 states have (on average 1.514018691588785) internal successors, (162), 107 states have internal predecessors, (162), 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) [2021-10-21 19:39:27,673 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 69 [2021-10-21 19:39:27,673 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:39:27,673 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:39:27,682 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:39:27,682 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:27,682 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:39:27,683 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 108 states, 107 states have (on average 1.514018691588785) internal successors, (162), 107 states have internal predecessors, (162), 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) [2021-10-21 19:39:27,689 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 69 [2021-10-21 19:39:27,690 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:39:27,690 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:39:27,691 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:39:27,691 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:27,696 INFO L791 eck$LassoCheckResult]: Stem: 101#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(13);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string29.base, #t~string29.offset, 1);call write~init~int(80, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(117, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(109, #t~string29.base, 3 + #t~string29.offset, 1);call write~init~int(112, #t~string29.base, 4 + #t~string29.offset, 1);call write~init~int(58, #t~string29.base, 5 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 6 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(110, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 2 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 3 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string35.base, #t~string35.offset, 1);call write~init~int(32, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string37.base, #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 1 + #t~string37.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 28#L-1true havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~3, main_~tmp~0;havoc main_~retValue_acc~3;havoc main_~tmp~0; 42#L279true havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 49#L287true main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 58#L243true assume 0 != main_~tmp~0; 84#L216true havoc test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_#t~nondet42, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 103#L931-1true [2021-10-21 19:39:27,697 INFO L793 eck$LassoCheckResult]: Loop: 103#L931-1true assume !false; 57#L494true assume test_~splverifierCounter~0 < 4; 17#L495true test_~tmp~4 := test_#t~nondet39;havoc test_#t~nondet39; 51#L503true assume !(0 != test_~tmp~4); 48#L503-1true test_~tmp___0~1 := test_#t~nondet40;havoc test_#t~nondet40; 73#L513true assume !(0 != test_~tmp___0~1); 16#L513-1true test_~tmp___2~0 := test_#t~nondet41;havoc test_#t~nondet41; 61#L523true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 93#L531-2true assume !(0 != ~pumpRunning~0); 74#L304true assume !(0 != ~systemActive~0); 36#L311true havoc __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 55#L100-1true __utac_acc__Specification3_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 64#L925true assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 103#L931-1true [2021-10-21 19:39:27,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:27,703 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-21 19:39:27,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:27,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510350058] [2021-10-21 19:39:27,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:27,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:39:27,941 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:39:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:39:28,145 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:39:28,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:28,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1679344202, now seen corresponding path program 1 times [2021-10-21 19:39:28,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:28,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205485688] [2021-10-21 19:39:28,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:28,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:28,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:28,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205485688] [2021-10-21 19:39:28,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205485688] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:28,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:28,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:39:28,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059981880] [2021-10-21 19:39:28,243 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:39:28,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:28,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:39:28,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:39:28,268 INFO L87 Difference]: Start difference. First operand has 108 states, 107 states have (on average 1.514018691588785) internal successors, (162), 107 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:39:28,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:28,332 INFO L93 Difference]: Finished difference Result 108 states and 152 transitions. [2021-10-21 19:39:28,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:39:28,335 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 108 states and 152 transitions. [2021-10-21 19:39:28,342 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 67 [2021-10-21 19:39:28,351 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 108 states to 101 states and 144 transitions. [2021-10-21 19:39:28,352 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 101 [2021-10-21 19:39:28,353 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 101 [2021-10-21 19:39:28,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 144 transitions. [2021-10-21 19:39:28,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:39:28,355 INFO L681 BuchiCegarLoop]: Abstraction has 101 states and 144 transitions. [2021-10-21 19:39:28,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states and 144 transitions. [2021-10-21 19:39:28,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-10-21 19:39:28,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 101 states have (on average 1.4257425742574257) internal successors, (144), 100 states have internal predecessors, (144), 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) [2021-10-21 19:39:28,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 144 transitions. [2021-10-21 19:39:28,387 INFO L704 BuchiCegarLoop]: Abstraction has 101 states and 144 transitions. [2021-10-21 19:39:28,387 INFO L587 BuchiCegarLoop]: Abstraction has 101 states and 144 transitions. [2021-10-21 19:39:28,387 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:39:28,387 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 101 states and 144 transitions. [2021-10-21 19:39:28,389 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 67 [2021-10-21 19:39:28,389 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:39:28,390 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:39:28,390 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:39:28,394 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:28,394 INFO L791 eck$LassoCheckResult]: Stem: 324#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(13);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string29.base, #t~string29.offset, 1);call write~init~int(80, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(117, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(109, #t~string29.base, 3 + #t~string29.offset, 1);call write~init~int(112, #t~string29.base, 4 + #t~string29.offset, 1);call write~init~int(58, #t~string29.base, 5 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 6 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(110, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 2 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 3 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string35.base, #t~string35.offset, 1);call write~init~int(32, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string37.base, #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 1 + #t~string37.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 270#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~3, main_~tmp~0;havoc main_~retValue_acc~3;havoc main_~tmp~0; 271#L279 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 288#L287 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 297#L243 assume 0 != main_~tmp~0; 303#L216 havoc test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_#t~nondet42, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 237#L931-1 [2021-10-21 19:39:28,396 INFO L793 eck$LassoCheckResult]: Loop: 237#L931-1 assume !false; 301#L494 assume test_~splverifierCounter~0 < 4; 251#L495 test_~tmp~4 := test_#t~nondet39;havoc test_#t~nondet39; 252#L503 assume !(0 != test_~tmp~4); 295#L503-1 test_~tmp___0~1 := test_#t~nondet40;havoc test_#t~nondet40; 296#L513 assume !(0 != test_~tmp___0~1); 249#L513-1 test_~tmp___2~0 := test_#t~nondet41;havoc test_#t~nondet41; 250#L523 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 273#L531-2 assume !(0 != ~pumpRunning~0); 226#L304 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret20, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 316#L362 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret19, processEnvironment__wrappee__lowWaterSensor_~tmp~1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~1; 233#L336-1 assume !(0 != ~pumpRunning~0); 235#L311 havoc __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 281#L100-1 __utac_acc__Specification3_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 300#L925 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 237#L931-1 [2021-10-21 19:39:28,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:28,397 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-21 19:39:28,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:28,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641374326] [2021-10-21 19:39:28,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:28,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:39:28,487 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:39:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:39:28,579 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:39:28,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:28,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1091435480, now seen corresponding path program 1 times [2021-10-21 19:39:28,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:28,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147506257] [2021-10-21 19:39:28,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:28,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:39:28,586 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:39:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:39:28,595 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:39:28,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:28,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1358149570, now seen corresponding path program 1 times [2021-10-21 19:39:28,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:28,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119555243] [2021-10-21 19:39:28,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:28,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:39:28,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:39:28,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:39:28,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119555243] [2021-10-21 19:39:28,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119555243] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:39:28,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:39:28,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:39:28,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476963781] [2021-10-21 19:39:28,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:39:28,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:39:28,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:39:28,890 INFO L87 Difference]: Start difference. First operand 101 states and 144 transitions. cyclomatic complexity: 45 Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2021-10-21 19:39:29,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:39:29,072 INFO L93 Difference]: Finished difference Result 355 states and 516 transitions. [2021-10-21 19:39:29,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:39:29,072 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 355 states and 516 transitions. [2021-10-21 19:39:29,077 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 241 [2021-10-21 19:39:29,081 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 355 states to 355 states and 516 transitions. [2021-10-21 19:39:29,082 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 355 [2021-10-21 19:39:29,083 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 355 [2021-10-21 19:39:29,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 355 states and 516 transitions. [2021-10-21 19:39:29,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:39:29,086 INFO L681 BuchiCegarLoop]: Abstraction has 355 states and 516 transitions. [2021-10-21 19:39:29,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states and 516 transitions. [2021-10-21 19:39:29,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 196. [2021-10-21 19:39:29,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 196 states have (on average 1.4183673469387754) internal successors, (278), 195 states have internal predecessors, (278), 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) [2021-10-21 19:39:29,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 278 transitions. [2021-10-21 19:39:29,103 INFO L704 BuchiCegarLoop]: Abstraction has 196 states and 278 transitions. [2021-10-21 19:39:29,103 INFO L587 BuchiCegarLoop]: Abstraction has 196 states and 278 transitions. [2021-10-21 19:39:29,103 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:39:29,103 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 196 states and 278 transitions. [2021-10-21 19:39:29,105 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 134 [2021-10-21 19:39:29,105 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:39:29,105 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:39:29,106 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:39:29,106 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:39:29,106 INFO L791 eck$LassoCheckResult]: Stem: 818#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(13);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string29.base, #t~string29.offset, 1);call write~init~int(80, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(117, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(109, #t~string29.base, 3 + #t~string29.offset, 1);call write~init~int(112, #t~string29.base, 4 + #t~string29.offset, 1);call write~init~int(58, #t~string29.base, 5 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 6 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(110, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 2 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(102, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 3 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string35.base, #t~string35.offset, 1);call write~init~int(32, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string37.base, #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 1 + #t~string37.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 747#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~3, main_~tmp~0;havoc main_~retValue_acc~3;havoc main_~tmp~0; 748#L279 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 765#L287 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 775#L243 assume 0 != main_~tmp~0; 785#L216 havoc test_#t~nondet39, test_#t~nondet40, test_#t~nondet41, test_#t~nondet42, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 711#L931-1 [2021-10-21 19:39:29,107 INFO L793 eck$LassoCheckResult]: Loop: 711#L931-1 assume !false; 781#L494 assume test_~splverifierCounter~0 < 4; 725#L495 test_~tmp~4 := test_#t~nondet39;havoc test_#t~nondet39; 726#L503 assume !(0 != test_~tmp~4); 773#L503-1 test_~tmp___0~1 := test_#t~nondet40;havoc test_#t~nondet40; 774#L513 assume !(0 != test_~tmp___0~1); 723#L513-1 test_~tmp___2~0 := test_#t~nondet41;havoc test_#t~nondet41; 724#L523 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 745#L531-2 assume !(0 != ~pumpRunning~0); 700#L304 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret20, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 798#L362 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret19, processEnvironment__wrappee__lowWaterSensor_~tmp~1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~1; 707#L336-1 assume !(0 != ~pumpRunning~0); 709#L311 havoc __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_#t~ret80, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 756#L100-1 __utac_acc__Specification3_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 788#L925 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~8);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 789#L132 __utac_acc__Specification3_spec__1_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret79;havoc __utac_acc__Specification3_spec__1_#t~ret79; 710#L931 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 711#L931-1 [2021-10-21 19:39:29,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:29,107 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-21 19:39:29,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:29,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022975682] [2021-10-21 19:39:29,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:29,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:39:29,150 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:39:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:39:29,201 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:39:29,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:29,201 INFO L82 PathProgramCache]: Analyzing trace with hash -897468678, now seen corresponding path program 1 times [2021-10-21 19:39:29,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:29,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881883642] [2021-10-21 19:39:29,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:29,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:39:29,207 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:39:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:39:29,213 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:39:29,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:39:29,214 INFO L82 PathProgramCache]: Analyzing trace with hash -488313836, now seen corresponding path program 1 times [2021-10-21 19:39:29,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:39:29,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257820955] [2021-10-21 19:39:29,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:39:29,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:39:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:39:29,253 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:39:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:39:29,328 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:40:24,827 WARN L207 SmtUtils]: Spent 55.32 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-21 19:41:22,984 WARN L207 SmtUtils]: Spent 28.59 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-21 19:41:23,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:41:23 BoogieIcfgContainer [2021-10-21 19:41:23,144 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:41:23,144 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:41:23,144 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:41:23,145 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:41:23,145 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:39:27" (3/4) ... [2021-10-21 19:41:23,148 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 19:41:23,206 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b844e4fb-5b10-42e0-b516-8d2e76faab99/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:41:23,206 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:41:23,208 INFO L168 Benchmark]: Toolchain (without parser) took 117319.67 ms. Allocated memory was 96.5 MB in the beginning and 148.9 MB in the end (delta: 52.4 MB). Free memory was 63.9 MB in the beginning and 112.1 MB in the end (delta: -48.2 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:23,208 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 96.5 MB. Free memory is still 52.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:41:23,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 479.41 ms. Allocated memory is still 96.5 MB. Free memory was 63.7 MB in the beginning and 65.2 MB in the end (delta: -1.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:23,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.20 ms. Allocated memory is still 96.5 MB. Free memory was 65.2 MB in the beginning and 61.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:23,210 INFO L168 Benchmark]: Boogie Preprocessor took 85.75 ms. Allocated memory is still 96.5 MB. Free memory was 61.8 MB in the beginning and 59.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:23,211 INFO L168 Benchmark]: RCFGBuilder took 989.38 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 59.3 MB in the beginning and 76.0 MB in the end (delta: -16.7 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:23,212 INFO L168 Benchmark]: BuchiAutomizer took 115592.91 ms. Allocated memory was 117.4 MB in the beginning and 148.9 MB in the end (delta: 31.5 MB). Free memory was 75.7 MB in the beginning and 115.1 MB in the end (delta: -39.4 MB). Peak memory consumption was 76.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:23,213 INFO L168 Benchmark]: Witness Printer took 62.29 ms. Allocated memory is still 148.9 MB. Free memory was 115.1 MB in the beginning and 112.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:23,217 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 96.5 MB. Free memory is still 52.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 479.41 ms. Allocated memory is still 96.5 MB. Free memory was 63.7 MB in the beginning and 65.2 MB in the end (delta: -1.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.20 ms. Allocated memory is still 96.5 MB. Free memory was 65.2 MB in the beginning and 61.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.75 ms. Allocated memory is still 96.5 MB. Free memory was 61.8 MB in the beginning and 59.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 989.38 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 59.3 MB in the beginning and 76.0 MB in the end (delta: -16.7 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 115592.91 ms. Allocated memory was 117.4 MB in the beginning and 148.9 MB in the end (delta: 31.5 MB). Free memory was 75.7 MB in the beginning and 115.1 MB in the end (delta: -39.4 MB). Peak memory consumption was 76.9 MB. Max. memory is 16.1 GB. * Witness Printer took 62.29 ms. Allocated memory is still 148.9 MB. Free memory was 115.1 MB in the beginning and 112.1 MB in the end (delta: 3.0 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 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 196 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 115.5s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 115.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 36.1ms AutomataMinimizationTime, 2 MinimizatonAttempts, 159 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 196 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 349 SDtfs, 686 SDslu, 604 SDs, 0 SdLazy, 82 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 101.9ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 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: 493]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, retValue_acc=0, NULL=0, NULL=0, NULL=11284, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@13201a5d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@133b37d2=0, NULL=1, retValue_acc=0, NULL=11275, NULL=0, NULL=11274, NULL=11280, NULL=11277, methaneLevelCritical=0, NULL=11292, tmp=0, NULL=11283, NULL=0, tmp=0, NULL=11282, NULL=0, tmp___1=0, NULL=11297, NULL=11281, NULL=0, NULL=0, NULL=0, cleanupTimeShifts=4, NULL=11279, NULL=11298, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@437f1d36=0, NULL=11287, tmp=0, tmp___0=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43d5746e=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23199fdd=78, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@60da87aa=0, NULL=0, systemActive=1, waterLevel=1, \result=1, NULL=0, NULL=0, NULL=11288, NULL=0, NULL=11291, \result=1, retValue_acc=1, head=0, pumpRunning=0, tmp=1, \result=0, NULL=11300, NULL=11289, NULL=0, NULL=0, NULL=0, NULL=0, NULL=11285, retValue_acc=1, NULL=11295, NULL=0, NULL=0, NULL=11276, NULL=0, NULL=0, NULL=11293, tmp___2=78, NULL=0, tmp___0=0, splverifierCounter=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@718e16e1=0, \result=0, NULL=11301, NULL=11290, NULL=11278, tmp=0, tmp___1=0, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@469dca38=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@d4cc83c=0, NULL=11286, NULL=0, NULL=11294, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2bcc46c=0, NULL=11299, NULL=11296} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L155] int cleanupTimeShifts = 4; [L296] int pumpRunning = 0; [L297] int systemActive = 1; [L719] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L234] int retValue_acc ; [L235] int tmp ; [L283] int retValue_acc ; [L286] retValue_acc = 1 [L287] return (retValue_acc); [L241] tmp = valid_product() [L243] COND TRUE \read(tmp) [L484] int splverifierCounter ; [L485] int tmp ; [L486] int tmp___0 ; [L487] int tmp___1 ; [L488] int tmp___2 ; [L491] splverifierCounter = 0 Loop: [L493] COND TRUE 1 [L495] COND TRUE splverifierCounter < 4 [L501] tmp = __VERIFIER_nondet_int() [L503] COND FALSE !(\read(tmp)) [L511] tmp___0 = __VERIFIER_nondet_int() [L513] COND FALSE !(\read(tmp___0)) [L521] tmp___2 = __VERIFIER_nondet_int() [L523] COND TRUE \read(tmp___2) [L478] systemActive = 1 [L304] COND FALSE !(\read(pumpRunning)) [L311] COND TRUE \read(systemActive) [L359] int tmp ; [L362] COND FALSE !(\read(pumpRunning)) [L333] int tmp ; [L336] COND FALSE !(\read(pumpRunning)) [L917] int tmp ; [L918] int tmp___0 ; [L919] int tmp___1 ; [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); [L923] tmp = isMethaneLevelCritical() [L925] COND FALSE !(\read(tmp)) [L128] int retValue_acc ; [L131] retValue_acc = waterLevel [L132] return (retValue_acc); [L929] tmp___0 = getWaterLevel() [L931] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:41:23,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b844e4fb-5b10-42e0-b516-8d2e76faab99/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...