./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product53.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_753ed9de-00a4-4799-ba15-74310e7352e5/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_753ed9de-00a4-4799-ba15-74310e7352e5/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_753ed9de-00a4-4799-ba15-74310e7352e5/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_753ed9de-00a4-4799-ba15-74310e7352e5/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product53.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_753ed9de-00a4-4799-ba15-74310e7352e5/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_753ed9de-00a4-4799-ba15-74310e7352e5/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 e1c4d106eb612b91999bdca4bb49f57df1223b70f35ecd881d6daa6062cb1b0b ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:07:56,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:07:56,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:07:56,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:07:56,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:07:56,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:07:56,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:07:56,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:07:56,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:07:56,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:07:56,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:07:56,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:07:56,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:07:56,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:07:56,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:07:56,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:07:56,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:07:56,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:07:56,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:07:56,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:07:56,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:07:56,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:07:56,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:07:56,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:07:56,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:07:56,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:07:56,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:07:56,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:07:56,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:07:56,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:07:56,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:07:56,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:07:56,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:07:56,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:07:56,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:07:56,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:07:56,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:07:56,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:07:56,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:07:56,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:07:56,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:07:56,572 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_753ed9de-00a4-4799-ba15-74310e7352e5/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:07:56,597 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:07:56,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:07:56,598 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:07:56,598 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:07:56,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:07:56,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:07:56,599 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:07:56,600 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:07:56,600 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:07:56,600 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:07:56,600 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:07:56,600 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:07:56,601 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:07:56,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:07:56,601 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:07:56,601 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:07:56,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:07:56,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:07:56,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:07:56,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:07:56,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:07:56,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:07:56,602 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:07:56,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:07:56,603 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:07:56,603 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:07:56,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:07:56,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:07:56,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:07:56,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:07:56,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:07:56,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:07:56,605 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:07:56,605 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_753ed9de-00a4-4799-ba15-74310e7352e5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_753ed9de-00a4-4799-ba15-74310e7352e5/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1c4d106eb612b91999bdca4bb49f57df1223b70f35ecd881d6daa6062cb1b0b [2021-10-21 19:07:56,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:07:56,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:07:56,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:07:56,901 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:07:56,902 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:07:56,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_753ed9de-00a4-4799-ba15-74310e7352e5/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec3_product53.cil.c [2021-10-21 19:07:56,973 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_753ed9de-00a4-4799-ba15-74310e7352e5/bin/uautomizer-j4sWxH34Be/data/e0a29a3af/01fa5fe1a2c04e38a5d2cdeae2ec93a9/FLAG28f1d012c [2021-10-21 19:07:57,492 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:07:57,493 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_753ed9de-00a4-4799-ba15-74310e7352e5/sv-benchmarks/c/product-lines/minepump_spec3_product53.cil.c [2021-10-21 19:07:57,514 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_753ed9de-00a4-4799-ba15-74310e7352e5/bin/uautomizer-j4sWxH34Be/data/e0a29a3af/01fa5fe1a2c04e38a5d2cdeae2ec93a9/FLAG28f1d012c [2021-10-21 19:07:57,809 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_753ed9de-00a4-4799-ba15-74310e7352e5/bin/uautomizer-j4sWxH34Be/data/e0a29a3af/01fa5fe1a2c04e38a5d2cdeae2ec93a9 [2021-10-21 19:07:57,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:07:57,814 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:07:57,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:07:57,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:07:57,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:07:57,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:07:57" (1/1) ... [2021-10-21 19:07:57,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e19009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:07:57, skipping insertion in model container [2021-10-21 19:07:57,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:07:57" (1/1) ... [2021-10-21 19:07:57,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:07:57,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:07:58,087 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_753ed9de-00a4-4799-ba15-74310e7352e5/sv-benchmarks/c/product-lines/minepump_spec3_product53.cil.c[1605,1618] [2021-10-21 19:07:58,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:07:58,211 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:07:58,224 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_753ed9de-00a4-4799-ba15-74310e7352e5/sv-benchmarks/c/product-lines/minepump_spec3_product53.cil.c[1605,1618] [2021-10-21 19:07:58,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:07:58,330 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:07:58,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:07:58 WrapperNode [2021-10-21 19:07:58,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:07:58,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:07:58,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:07:58,332 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:07:58,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:07:58" (1/1) ... [2021-10-21 19:07:58,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:07:58" (1/1) ... [2021-10-21 19:07:58,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:07:58,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:07:58,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:07:58,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:07:58,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:07:58" (1/1) ... [2021-10-21 19:07:58,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:07:58" (1/1) ... [2021-10-21 19:07:58,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:07:58" (1/1) ... [2021-10-21 19:07:58,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:07:58" (1/1) ... [2021-10-21 19:07:58,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:07:58" (1/1) ... [2021-10-21 19:07:58,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:07:58" (1/1) ... [2021-10-21 19:07:58,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:07:58" (1/1) ... [2021-10-21 19:07:58,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:07:58,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:07:58,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:07:58,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:07:58,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:07:58" (1/1) ... [2021-10-21 19:07:58,506 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:07:58,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_753ed9de-00a4-4799-ba15-74310e7352e5/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:07:58,542 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_753ed9de-00a4-4799-ba15-74310e7352e5/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:07:58,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_753ed9de-00a4-4799-ba15-74310e7352e5/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:07:58,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:07:58,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:07:58,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:07:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:07:59,586 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:07:59,587 INFO L299 CfgBuilder]: Removed 282 assume(true) statements. [2021-10-21 19:07:59,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:07:59 BoogieIcfgContainer [2021-10-21 19:07:59,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:07:59,591 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:07:59,591 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:07:59,594 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:07:59,595 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:07:59,595 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:07:57" (1/3) ... [2021-10-21 19:07:59,596 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@173f4e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:07:59, skipping insertion in model container [2021-10-21 19:07:59,597 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:07:59,597 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:07:58" (2/3) ... [2021-10-21 19:07:59,597 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@173f4e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:07:59, skipping insertion in model container [2021-10-21 19:07:59,597 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:07:59,598 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:07:59" (3/3) ... [2021-10-21 19:07:59,599 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product53.cil.c [2021-10-21 19:07:59,641 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:07:59,642 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:07:59,642 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:07:59,642 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:07:59,642 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:07:59,642 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:07:59,642 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:07:59,643 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:07:59,663 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 192 states, 191 states have (on average 1.5392670157068062) internal successors, (294), 191 states have internal predecessors, (294), 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 19:07:59,695 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 125 [2021-10-21 19:07:59,696 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:07:59,696 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:07:59,704 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:07:59,704 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:07:59,705 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:07:59,706 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 192 states, 191 states have (on average 1.5392670157068062) internal successors, (294), 191 states have internal predecessors, (294), 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 19:07:59,717 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 125 [2021-10-21 19:07:59,717 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:07:59,717 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:07:59,718 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:07:59,719 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:07:59,723 INFO L791 eck$LassoCheckResult]: Stem: 177#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);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(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 71#L-1true havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 175#L84true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 166#L92true main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 55#L985true assume 0 != main_~tmp~10; 40#L962true havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 58#L518-1true [2021-10-21 19:07:59,724 INFO L793 eck$LassoCheckResult]: Loop: 58#L518-1true assume !false; 85#L112true assume test_~splverifierCounter~0 < 4; 167#L113true test_~tmp~0 := test_#t~nondet8;havoc test_#t~nondet8; 43#L121true assume !(0 != test_~tmp~0); 158#L121-1true test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 74#L131true assume !(0 != test_~tmp___0~0); 147#L131-1true test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 76#L141true assume 0 != test_~tmp___2~0; 130#L147-2true assume !(0 != ~pumpRunning~0); 48#L183true assume !(0 != ~systemActive~0); 98#L190true havoc __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_~tmp~6, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~6;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 157#L443-1true __utac_acc__Specification3_spec__1_#t~ret44 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~6 := __utac_acc__Specification3_spec__1_#t~ret44;havoc __utac_acc__Specification3_spec__1_#t~ret44; 26#L512true assume 0 != __utac_acc__Specification3_spec__1_~tmp~6; 58#L518-1true [2021-10-21 19:07:59,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:07:59,730 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-21 19:07:59,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:07:59,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964738181] [2021-10-21 19:07:59,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:07:59,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:08:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:08:00,003 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:08:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:08:00,258 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:08:00,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:08:00,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1676481291, now seen corresponding path program 1 times [2021-10-21 19:08:00,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:08:00,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233447143] [2021-10-21 19:08:00,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:08:00,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:08:00,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:08:00,270 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:08:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:08:00,292 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:08:00,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:08:00,299 INFO L82 PathProgramCache]: Analyzing trace with hash 37797647, now seen corresponding path program 1 times [2021-10-21 19:08:00,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:08:00,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260962381] [2021-10-21 19:08:00,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:08:00,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:08:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:08:00,523 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 19:08:00,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:08:00,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260962381] [2021-10-21 19:08:00,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260962381] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:08:00,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:08:00,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:08:00,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426007656] [2021-10-21 19:08:00,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:08:00,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:08:00,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:08:00,706 INFO L87 Difference]: Start difference. First operand has 192 states, 191 states have (on average 1.5392670157068062) internal successors, (294), 191 states have internal predecessors, (294), 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 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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 19:08:00,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:08:00,919 INFO L93 Difference]: Finished difference Result 192 states and 283 transitions. [2021-10-21 19:08:00,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:08:00,921 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 192 states and 283 transitions. [2021-10-21 19:08:00,927 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 123 [2021-10-21 19:08:00,935 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 192 states to 185 states and 276 transitions. [2021-10-21 19:08:00,936 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 185 [2021-10-21 19:08:00,937 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 185 [2021-10-21 19:08:00,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 276 transitions. [2021-10-21 19:08:00,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:08:00,940 INFO L681 BuchiCegarLoop]: Abstraction has 185 states and 276 transitions. [2021-10-21 19:08:00,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states and 276 transitions. [2021-10-21 19:08:00,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-10-21 19:08:00,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 185 states have (on average 1.491891891891892) internal successors, (276), 184 states have internal predecessors, (276), 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 19:08:00,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 276 transitions. [2021-10-21 19:08:00,985 INFO L704 BuchiCegarLoop]: Abstraction has 185 states and 276 transitions. [2021-10-21 19:08:00,992 INFO L587 BuchiCegarLoop]: Abstraction has 185 states and 276 transitions. [2021-10-21 19:08:00,993 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:08:00,993 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 185 states and 276 transitions. [2021-10-21 19:08:00,996 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 123 [2021-10-21 19:08:00,996 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:08:00,996 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:08:00,997 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:08:00,997 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:08:00,997 INFO L791 eck$LassoCheckResult]: Stem: 585#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);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(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 515#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 516#L84 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 583#L92 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 496#L985 assume 0 != main_~tmp~10; 477#L962 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 420#L518-1 [2021-10-21 19:08:00,998 INFO L793 eck$LassoCheckResult]: Loop: 420#L518-1 assume !false; 499#L112 assume test_~splverifierCounter~0 < 4; 532#L113 test_~tmp~0 := test_#t~nondet8;havoc test_#t~nondet8; 481#L121 assume !(0 != test_~tmp~0); 449#L121-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 520#L131 assume !(0 != test_~tmp___0~0); 451#L131-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 521#L141 assume 0 != test_~tmp___2~0; 522#L147-2 assume !(0 != ~pumpRunning~0); 493#L183 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret14, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 472#L267 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret13, processEnvironment__wrappee__lowWaterSensor_~tmp~2;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~2; 474#L241-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret12, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 564#L215-3 assume !(0 == ~pumpRunning~0); 409#L190 havoc __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_~tmp~6, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~6;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 542#L443-1 __utac_acc__Specification3_spec__1_#t~ret44 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~6 := __utac_acc__Specification3_spec__1_#t~ret44;havoc __utac_acc__Specification3_spec__1_#t~ret44; 446#L512 assume 0 != __utac_acc__Specification3_spec__1_~tmp~6; 420#L518-1 [2021-10-21 19:08:00,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:08:00,998 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-21 19:08:00,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:08:00,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612008526] [2021-10-21 19:08:00,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:08:00,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:08:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:08:01,065 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:08:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:08:01,150 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:08:01,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:08:01,151 INFO L82 PathProgramCache]: Analyzing trace with hash -270276503, now seen corresponding path program 1 times [2021-10-21 19:08:01,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:08:01,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441096574] [2021-10-21 19:08:01,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:08:01,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:08:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:08:01,173 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 19:08:01,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:08:01,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441096574] [2021-10-21 19:08:01,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441096574] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:08:01,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:08:01,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:08:01,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416903963] [2021-10-21 19:08:01,175 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:08:01,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:08:01,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:08:01,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:08:01,176 INFO L87 Difference]: Start difference. First operand 185 states and 276 transitions. cyclomatic complexity: 93 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 19:08:01,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:08:01,301 INFO L93 Difference]: Finished difference Result 196 states and 273 transitions. [2021-10-21 19:08:01,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:08:01,301 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 196 states and 273 transitions. [2021-10-21 19:08:01,305 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 134 [2021-10-21 19:08:01,308 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 196 states to 196 states and 273 transitions. [2021-10-21 19:08:01,308 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 196 [2021-10-21 19:08:01,309 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 196 [2021-10-21 19:08:01,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 196 states and 273 transitions. [2021-10-21 19:08:01,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:08:01,310 INFO L681 BuchiCegarLoop]: Abstraction has 196 states and 273 transitions. [2021-10-21 19:08:01,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states and 273 transitions. [2021-10-21 19:08:01,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-10-21 19:08:01,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 196 states have (on average 1.3928571428571428) internal successors, (273), 195 states have internal predecessors, (273), 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 19:08:01,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 273 transitions. [2021-10-21 19:08:01,330 INFO L704 BuchiCegarLoop]: Abstraction has 196 states and 273 transitions. [2021-10-21 19:08:01,330 INFO L587 BuchiCegarLoop]: Abstraction has 196 states and 273 transitions. [2021-10-21 19:08:01,330 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:08:01,330 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 196 states and 273 transitions. [2021-10-21 19:08:01,332 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 134 [2021-10-21 19:08:01,332 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:08:01,338 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:08:01,342 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:08:01,343 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:08:01,343 INFO L791 eck$LassoCheckResult]: Stem: 942#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);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(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 884#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 885#L84 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 940#L92 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 867#L985 assume 0 != main_~tmp~10; 849#L962 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 804#L518-1 [2021-10-21 19:08:01,343 INFO L793 eck$LassoCheckResult]: Loop: 804#L518-1 assume !false; 870#L112 assume test_~splverifierCounter~0 < 4; 897#L113 test_~tmp~0 := test_#t~nondet8;havoc test_#t~nondet8; 852#L121 assume !(0 != test_~tmp~0); 821#L121-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 888#L131 assume !(0 != test_~tmp___0~0); 827#L131-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 889#L141 assume 0 != test_~tmp___2~0; 890#L147-2 assume !(0 != ~pumpRunning~0); 859#L183 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret14, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 847#L267 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret13, processEnvironment__wrappee__lowWaterSensor_~tmp~2;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~2; 848#L241-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret12, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 923#L215-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~4, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~4;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 924#L483-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 801#L488-3 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 802#L369-9 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 911#L369-11 isHighWaterLevel_~retValue_acc~4 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~4; 912#L375-3 processEnvironment__wrappee__highWaterSensor_#t~ret12 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret12;havoc processEnvironment__wrappee__highWaterSensor_#t~ret12; 929#L219-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 857#L190 havoc __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_~tmp~6, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~6;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 907#L443-1 __utac_acc__Specification3_spec__1_#t~ret44 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~6 := __utac_acc__Specification3_spec__1_#t~ret44;havoc __utac_acc__Specification3_spec__1_#t~ret44; 824#L512 assume 0 != __utac_acc__Specification3_spec__1_~tmp~6; 804#L518-1 [2021-10-21 19:08:01,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:08:01,344 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-21 19:08:01,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:08:01,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089483256] [2021-10-21 19:08:01,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:08:01,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:08:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:08:01,424 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:08:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:08:01,486 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:08:01,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:08:01,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1151634357, now seen corresponding path program 1 times [2021-10-21 19:08:01,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:08:01,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013078409] [2021-10-21 19:08:01,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:08:01,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:08:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:08:01,494 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:08:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:08:01,512 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:08:01,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:08:01,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1890027813, now seen corresponding path program 1 times [2021-10-21 19:08:01,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:08:01,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541277784] [2021-10-21 19:08:01,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:08:01,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:08:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:08:01,632 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 19:08:01,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:08:01,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541277784] [2021-10-21 19:08:01,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541277784] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:08:01,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:08:01,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:08:01,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291812402] [2021-10-21 19:08:01,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:08:01,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:08:01,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:08:01,893 INFO L87 Difference]: Start difference. First operand 196 states and 273 transitions. cyclomatic complexity: 79 Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 19:08:02,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:08:02,045 INFO L93 Difference]: Finished difference Result 656 states and 915 transitions. [2021-10-21 19:08:02,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:08:02,046 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 656 states and 915 transitions. [2021-10-21 19:08:02,056 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 472 [2021-10-21 19:08:02,066 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 656 states to 656 states and 915 transitions. [2021-10-21 19:08:02,066 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 656 [2021-10-21 19:08:02,068 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 656 [2021-10-21 19:08:02,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 656 states and 915 transitions. [2021-10-21 19:08:02,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:08:02,077 INFO L681 BuchiCegarLoop]: Abstraction has 656 states and 915 transitions. [2021-10-21 19:08:02,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states and 915 transitions. [2021-10-21 19:08:02,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 386. [2021-10-21 19:08:02,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 386 states have (on average 1.378238341968912) internal successors, (532), 385 states have internal predecessors, (532), 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 19:08:02,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 532 transitions. [2021-10-21 19:08:02,125 INFO L704 BuchiCegarLoop]: Abstraction has 386 states and 532 transitions. [2021-10-21 19:08:02,125 INFO L587 BuchiCegarLoop]: Abstraction has 386 states and 532 transitions. [2021-10-21 19:08:02,126 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:08:02,126 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 386 states and 532 transitions. [2021-10-21 19:08:02,130 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 268 [2021-10-21 19:08:02,131 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:08:02,131 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:08:02,131 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:08:02,132 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:08:02,132 INFO L791 eck$LassoCheckResult]: Stem: 1839#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);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(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 1758#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 1759#L84 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1835#L92 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 1739#L985 assume 0 != main_~tmp~10; 1721#L962 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1674#L518-1 [2021-10-21 19:08:02,133 INFO L793 eck$LassoCheckResult]: Loop: 1674#L518-1 assume !false; 1743#L112 assume test_~splverifierCounter~0 < 4; 1836#L113 test_~tmp~0 := test_#t~nondet8;havoc test_#t~nondet8; 1724#L121 assume !(0 != test_~tmp~0); 1695#L121-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 1763#L131 assume !(0 != test_~tmp___0~0); 1764#L131-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 1827#L141 assume 0 != test_~tmp___2~0; 2027#L147-2 assume !(0 != ~pumpRunning~0); 2023#L183 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret14, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 2021#L267 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret13, processEnvironment__wrappee__lowWaterSensor_~tmp~2;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~2; 2012#L241-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret12, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 2017#L215-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~4, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~4;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 2015#L483-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 2013#L488-3 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 1844#L369-9 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 1794#L369-11 isHighWaterLevel_~retValue_acc~4 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~4; 1795#L375-3 processEnvironment__wrappee__highWaterSensor_#t~ret12 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret12;havoc processEnvironment__wrappee__highWaterSensor_#t~ret12; 1816#L219-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 1729#L190 havoc __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_~tmp~6, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~6;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 2007#L443-1 __utac_acc__Specification3_spec__1_#t~ret44 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~6 := __utac_acc__Specification3_spec__1_#t~ret44;havoc __utac_acc__Specification3_spec__1_#t~ret44; 1690#L512 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~6);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 1691#L475 __utac_acc__Specification3_spec__1_#t~ret45 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~3 := __utac_acc__Specification3_spec__1_#t~ret45;havoc __utac_acc__Specification3_spec__1_#t~ret45; 1673#L518 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~3); 1674#L518-1 [2021-10-21 19:08:02,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:08:02,134 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-21 19:08:02,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:08:02,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789002002] [2021-10-21 19:08:02,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:08:02,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:08:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:08:02,180 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:08:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:08:02,235 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:08:02,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:08:02,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1380933977, now seen corresponding path program 1 times [2021-10-21 19:08:02,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:08:02,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213101944] [2021-10-21 19:08:02,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:08:02,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:08:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:08:02,246 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:08:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:08:02,259 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:08:02,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:08:02,263 INFO L82 PathProgramCache]: Analyzing trace with hash 454449229, now seen corresponding path program 1 times [2021-10-21 19:08:02,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:08:02,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743529653] [2021-10-21 19:08:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:08:02,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:08:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:08:02,316 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:08:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:08:02,388 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:08:58,421 WARN L207 SmtUtils]: Spent 55.74 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-21 19:09:57,071 WARN L207 SmtUtils]: Spent 28.41 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-21 19:09:57,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:09:57 BoogieIcfgContainer [2021-10-21 19:09:57,238 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:09:57,239 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:09:57,239 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:09:57,239 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:09:57,240 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:07:59" (3/4) ... [2021-10-21 19:09:57,243 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 19:09:57,298 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_753ed9de-00a4-4799-ba15-74310e7352e5/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:09:57,298 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:09:57,300 INFO L168 Benchmark]: Toolchain (without parser) took 119485.34 ms. Allocated memory was 111.1 MB in the beginning and 182.5 MB in the end (delta: 71.3 MB). Free memory was 72.4 MB in the beginning and 87.2 MB in the end (delta: -14.8 MB). Peak memory consumption was 56.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:09:57,300 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 111.1 MB. Free memory is still 89.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:09:57,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 510.68 ms. Allocated memory is still 111.1 MB. Free memory was 72.2 MB in the beginning and 79.8 MB in the end (delta: -7.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:09:57,301 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.82 ms. Allocated memory is still 111.1 MB. Free memory was 79.8 MB in the beginning and 75.1 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:09:57,302 INFO L168 Benchmark]: Boogie Preprocessor took 81.80 ms. Allocated memory is still 111.1 MB. Free memory was 75.1 MB in the beginning and 71.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:09:57,302 INFO L168 Benchmark]: RCFGBuilder took 1093.36 ms. Allocated memory is still 111.1 MB. Free memory was 71.4 MB in the beginning and 66.3 MB in the end (delta: 5.1 MB). Peak memory consumption was 36.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:09:57,303 INFO L168 Benchmark]: BuchiAutomizer took 117647.95 ms. Allocated memory was 111.1 MB in the beginning and 182.5 MB in the end (delta: 71.3 MB). Free memory was 65.8 MB in the beginning and 90.2 MB in the end (delta: -24.4 MB). Peak memory consumption was 99.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:09:57,303 INFO L168 Benchmark]: Witness Printer took 59.62 ms. Allocated memory is still 182.5 MB. Free memory was 90.2 MB in the beginning and 87.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:09:57,306 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 111.1 MB. Free memory is still 89.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 510.68 ms. Allocated memory is still 111.1 MB. Free memory was 72.2 MB in the beginning and 79.8 MB in the end (delta: -7.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.82 ms. Allocated memory is still 111.1 MB. Free memory was 79.8 MB in the beginning and 75.1 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.80 ms. Allocated memory is still 111.1 MB. Free memory was 75.1 MB in the beginning and 71.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1093.36 ms. Allocated memory is still 111.1 MB. Free memory was 71.4 MB in the beginning and 66.3 MB in the end (delta: 5.1 MB). Peak memory consumption was 36.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 117647.95 ms. Allocated memory was 111.1 MB in the beginning and 182.5 MB in the end (delta: 71.3 MB). Free memory was 65.8 MB in the beginning and 90.2 MB in the end (delta: -24.4 MB). Peak memory consumption was 99.4 MB. Max. memory is 16.1 GB. * Witness Printer took 59.62 ms. Allocated memory is still 182.5 MB. Free memory was 90.2 MB in the beginning and 87.2 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 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 386 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 117.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 116.7s. Construction of modules took 0.2s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 93.6ms AutomataMinimizationTime, 3 MinimizatonAttempts, 270 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 386 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 815 SDtfs, 2132 SDslu, 1080 SDs, 0 SdLazy, 121 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 272.4ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 111]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=19403} State at position 1 is {NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@426a5cff=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18cdb2ad=0, NULL=19403, NULL=0, NULL=19422, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3a6c2d55=0, retValue_acc=0, NULL=0, NULL=19428, NULL=0, tmp___1=0, NULL=19419, NULL=19414, NULL=0, NULL=19421, cleanupTimeShifts=4, tmp=0, tmp=1, NULL=19415, tmp=0, NULL=0, NULL=0, waterLevel=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@29644bbb=0, tmp___0=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=19410, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, tmp=1, NULL=0, NULL=19420, NULL=0, NULL=0, retValue_acc=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7733c3b8=0, NULL=19430, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2b301750=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2c21cba8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3e722622=0, tmp=0, head=0, NULL=19416, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6701f87f=0, NULL=0, NULL=19406, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@74b10e97=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3f54b7ed=57, tmp=0, NULL=19404, tmp___0=0, NULL=0, NULL=0, NULL=19431, NULL=19411, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36506361=0, NULL=0, tmp=0, NULL=19413, NULL=19418, tmp___0=1, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=19423, \result=1, retValue_acc=0, \result=0, NULL=19407, retValue_acc=0, \result=0, NULL=19424, NULL=0, NULL=19405, NULL=19427, NULL=0, NULL=19426, NULL=19417, NULL=19408, retValue_acc=1, tmp___2=57, splverifierCounter=0, NULL=0, \result=0, NULL=19412, NULL=19429, tmp___1=0, NULL=19425, NULL=19409} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L175] int pumpRunning = 0; [L176] int systemActive = 1; [L400] int waterLevel = 1; [L401] int methaneLevelCritical = 0; [L706] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L903] int cleanupTimeShifts = 4; [L976] int retValue_acc ; [L977] int tmp ; [L88] int retValue_acc ; [L91] retValue_acc = 1 [L92] return (retValue_acc); [L983] tmp = valid_product() [L985] COND TRUE \read(tmp) [L102] int splverifierCounter ; [L103] int tmp ; [L104] int tmp___0 ; [L105] int tmp___1 ; [L106] int tmp___2 ; [L109] splverifierCounter = 0 Loop: [L111] COND TRUE 1 [L113] COND TRUE splverifierCounter < 4 [L119] tmp = __VERIFIER_nondet_int() [L121] COND FALSE !(\read(tmp)) [L129] tmp___0 = __VERIFIER_nondet_int() [L131] COND FALSE !(\read(tmp___0)) [L139] tmp___2 = __VERIFIER_nondet_int() [L141] COND TRUE \read(tmp___2) [L183] COND FALSE !(\read(pumpRunning)) [L190] COND TRUE \read(systemActive) [L264] int tmp ; [L267] COND FALSE !(\read(pumpRunning)) [L238] int tmp ; [L241] COND FALSE !(\read(pumpRunning)) [L212] int tmp ; [L215] COND TRUE ! pumpRunning [L361] int retValue_acc ; [L362] int tmp ; [L363] int tmp___0 ; [L480] int retValue_acc ; [L483] COND TRUE waterLevel < 2 [L484] retValue_acc = 1 [L485] return (retValue_acc); [L367] tmp = isHighWaterSensorDry() [L369] COND TRUE \read(tmp) [L370] tmp___0 = 0 [L374] retValue_acc = tmp___0 [L375] return (retValue_acc); [L217] tmp = isHighWaterLevel() [L219] COND FALSE !(\read(tmp)) [L504] int tmp ; [L505] int tmp___0 ; [L506] int tmp___1 ; [L439] int retValue_acc ; [L442] retValue_acc = methaneLevelCritical [L443] return (retValue_acc); [L510] tmp = isMethaneLevelCritical() [L512] COND FALSE !(\read(tmp)) [L471] int retValue_acc ; [L474] retValue_acc = waterLevel [L475] return (retValue_acc); [L516] tmp___0 = getWaterLevel() [L518] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:09:57,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_753ed9de-00a4-4799-ba15-74310e7352e5/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...