./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product48.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_2e4d24ef-c3cd-42b9-aaaa-75f190123d55/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4d24ef-c3cd-42b9-aaaa-75f190123d55/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_2e4d24ef-c3cd-42b9-aaaa-75f190123d55/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4d24ef-c3cd-42b9-aaaa-75f190123d55/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product48.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4d24ef-c3cd-42b9-aaaa-75f190123d55/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_2e4d24ef-c3cd-42b9-aaaa-75f190123d55/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 baaf7bc14db82105b5843c6fd2fd917eb756a5c6e86ff33e83c3b3f08cca23ae .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:24:23,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:24:23,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:24:23,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:24:23,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:24:23,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:24:23,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:24:23,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:24:23,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:24:23,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:24:23,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:24:23,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:24:23,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:24:23,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:24:23,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:24:23,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:24:23,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:24:23,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:24:23,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:24:23,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:24:23,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:24:23,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:24:23,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:24:23,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:24:23,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:24:23,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:24:23,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:24:23,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:24:23,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:24:23,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:24:23,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:24:23,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:24:23,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:24:23,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:24:23,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:24:23,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:24:23,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:24:23,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:24:23,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:24:23,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:24:23,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:24:23,435 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4d24ef-c3cd-42b9-aaaa-75f190123d55/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:24:23,461 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:24:23,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:24:23,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:24:23,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:24:23,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:24:23,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:24:23,464 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:24:23,464 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:24:23,464 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:24:23,464 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:24:23,465 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:24:23,465 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:24:23,465 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:24:23,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:24:23,466 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:24:23,466 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:24:23,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:24:23,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:24:23,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:24:23,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:24:23,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:24:23,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:24:23,468 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:24:23,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:24:23,468 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:24:23,468 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:24:23,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:24:23,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:24:23,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:24:23,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:24:23,470 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:24:23,470 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:24:23,471 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:24:23,471 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_2e4d24ef-c3cd-42b9-aaaa-75f190123d55/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4d24ef-c3cd-42b9-aaaa-75f190123d55/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> baaf7bc14db82105b5843c6fd2fd917eb756a5c6e86ff33e83c3b3f08cca23ae [2021-10-21 19:24:23,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:24:23,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:24:23,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:24:23,758 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:24:23,759 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:24:23,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4d24ef-c3cd-42b9-aaaa-75f190123d55/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec3_product48.cil.c [2021-10-21 19:24:23,839 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4d24ef-c3cd-42b9-aaaa-75f190123d55/bin/uautomizer-j4sWxH34Be/data/4bdc732b8/13c57a0e09eb4e9986eca9b06bccab5c/FLAG42ed0617b [2021-10-21 19:24:24,332 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:24:24,333 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4d24ef-c3cd-42b9-aaaa-75f190123d55/sv-benchmarks/c/product-lines/minepump_spec3_product48.cil.c [2021-10-21 19:24:24,354 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4d24ef-c3cd-42b9-aaaa-75f190123d55/bin/uautomizer-j4sWxH34Be/data/4bdc732b8/13c57a0e09eb4e9986eca9b06bccab5c/FLAG42ed0617b [2021-10-21 19:24:24,676 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4d24ef-c3cd-42b9-aaaa-75f190123d55/bin/uautomizer-j4sWxH34Be/data/4bdc732b8/13c57a0e09eb4e9986eca9b06bccab5c [2021-10-21 19:24:24,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:24:24,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:24:24,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:24:24,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:24:24,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:24:24,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:24:24" (1/1) ... [2021-10-21 19:24:24,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32b29cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:24, skipping insertion in model container [2021-10-21 19:24:24,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:24:24" (1/1) ... [2021-10-21 19:24:24,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:24:24,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:24:24,922 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_2e4d24ef-c3cd-42b9-aaaa-75f190123d55/sv-benchmarks/c/product-lines/minepump_spec3_product48.cil.c[1605,1618] [2021-10-21 19:24:25,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:24:25,042 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:24:25,056 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_2e4d24ef-c3cd-42b9-aaaa-75f190123d55/sv-benchmarks/c/product-lines/minepump_spec3_product48.cil.c[1605,1618] [2021-10-21 19:24:25,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:24:25,159 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:24:25,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:25 WrapperNode [2021-10-21 19:24:25,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:24:25,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:24:25,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:24:25,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:24:25,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:25" (1/1) ... [2021-10-21 19:24:25,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:25" (1/1) ... [2021-10-21 19:24:25,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:24:25,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:24:25,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:24:25,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:24:25,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:25" (1/1) ... [2021-10-21 19:24:25,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:25" (1/1) ... [2021-10-21 19:24:25,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:25" (1/1) ... [2021-10-21 19:24:25,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:25" (1/1) ... [2021-10-21 19:24:25,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:25" (1/1) ... [2021-10-21 19:24:25,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:25" (1/1) ... [2021-10-21 19:24:25,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:25" (1/1) ... [2021-10-21 19:24:25,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:24:25,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:24:25,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:24:25,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:24:25,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:25" (1/1) ... [2021-10-21 19:24:25,412 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:24:25,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4d24ef-c3cd-42b9-aaaa-75f190123d55/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:24:25,431 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4d24ef-c3cd-42b9-aaaa-75f190123d55/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:24:25,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4d24ef-c3cd-42b9-aaaa-75f190123d55/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:24:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:24:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:24:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:24:25,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:24:26,344 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:24:26,344 INFO L299 CfgBuilder]: Removed 204 assume(true) statements. [2021-10-21 19:24:26,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:24:26 BoogieIcfgContainer [2021-10-21 19:24:26,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:24:26,348 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:24:26,348 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:24:26,353 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:24:26,354 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:24:26,354 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:24:24" (1/3) ... [2021-10-21 19:24:26,356 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55f472be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:24:26, skipping insertion in model container [2021-10-21 19:24:26,357 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:24:26,357 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:24:25" (2/3) ... [2021-10-21 19:24:26,357 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55f472be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:24:26, skipping insertion in model container [2021-10-21 19:24:26,358 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:24:26,358 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:24:26" (3/3) ... [2021-10-21 19:24:26,360 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product48.cil.c [2021-10-21 19:24:26,420 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:24:26,420 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:24:26,420 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:24:26,420 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:24:26,421 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:24:26,421 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:24:26,421 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:24:26,421 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:24:26,448 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 states have internal predecessors, (201), 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 19:24:26,483 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-10-21 19:24:26,484 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:24:26,484 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:24:26,492 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:24:26,492 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:26,492 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:24:26,493 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 states have internal predecessors, (201), 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 19:24:26,502 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-10-21 19:24:26,502 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:24:26,503 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:24:26,504 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:24:26,504 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:26,509 INFO L791 eck$LassoCheckResult]: Stem: 123#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.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);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 47#L-1true havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 122#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; 119#L92true main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 37#L540true assume 0 != main_~tmp~5; 87#L516true havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 67#L115-1true [2021-10-21 19:24:26,509 INFO L793 eck$LassoCheckResult]: Loop: 67#L115-1true assume !false; 24#L565true assume test_~splverifierCounter~0 < 4; 116#L566true test_~tmp~6 := test_#t~nondet43;havoc test_#t~nondet43; 56#L574true assume !(0 != test_~tmp~6); 129#L574-1true test_~tmp___0~2 := test_#t~nondet44;havoc test_#t~nondet44; 62#L584true assume !(0 != test_~tmp___0~2); 93#L584-1true test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 104#L594true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 113#L602-1true assume !(0 != ~pumpRunning~0); 72#L246true assume !(0 != ~systemActive~0); 91#L253true havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 13#L182-3true __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 117#L109true assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 67#L115-1true [2021-10-21 19:24:26,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:26,515 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-21 19:24:26,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:26,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133423509] [2021-10-21 19:24:26,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:26,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:24:26,770 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:24:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:24:26,909 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:24:26,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:26,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1669770369, now seen corresponding path program 1 times [2021-10-21 19:24:26,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:26,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338305859] [2021-10-21 19:24:26,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:26,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:24:26,971 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 19:24:26,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:24:26,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338305859] [2021-10-21 19:24:26,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338305859] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:24:26,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:24:26,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:24:26,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413986097] [2021-10-21 19:24:26,979 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:24:26,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:24:26,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:24:26,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:24:26,997 INFO L87 Difference]: Start difference. First operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:27,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:27,057 INFO L93 Difference]: Finished difference Result 262 states and 378 transitions. [2021-10-21 19:24:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:24:27,059 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 262 states and 378 transitions. [2021-10-21 19:24:27,068 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 170 [2021-10-21 19:24:27,075 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 262 states to 248 states and 363 transitions. [2021-10-21 19:24:27,077 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 248 [2021-10-21 19:24:27,078 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 248 [2021-10-21 19:24:27,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 248 states and 363 transitions. [2021-10-21 19:24:27,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:24:27,081 INFO L681 BuchiCegarLoop]: Abstraction has 248 states and 363 transitions. [2021-10-21 19:24:27,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states and 363 transitions. [2021-10-21 19:24:27,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 246. [2021-10-21 19:24:27,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 246 states have (on average 1.4634146341463414) internal successors, (360), 245 states have internal predecessors, (360), 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 19:24:27,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 360 transitions. [2021-10-21 19:24:27,123 INFO L704 BuchiCegarLoop]: Abstraction has 246 states and 360 transitions. [2021-10-21 19:24:27,123 INFO L587 BuchiCegarLoop]: Abstraction has 246 states and 360 transitions. [2021-10-21 19:24:27,123 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:24:27,123 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 246 states and 360 transitions. [2021-10-21 19:24:27,126 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 168 [2021-10-21 19:24:27,126 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:24:27,127 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:24:27,127 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:24:27,128 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:27,128 INFO L791 eck$LassoCheckResult]: Stem: 540#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.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);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 478#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 479#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; 538#L92 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 466#L540 assume 0 != main_~tmp~5; 467#L516 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 500#L115-1 [2021-10-21 19:24:27,128 INFO L793 eck$LassoCheckResult]: Loop: 500#L115-1 assume !false; 444#L565 assume test_~splverifierCounter~0 < 4; 445#L566 test_~tmp~6 := test_#t~nondet43;havoc test_#t~nondet43; 490#L574 assume !(0 != test_~tmp~6); 420#L574-1 test_~tmp___0~2 := test_#t~nondet44;havoc test_#t~nondet44; 496#L584 assume !(0 != test_~tmp___0~2); 497#L584-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 522#L594 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 428#L602-1 assume !(0 != ~pumpRunning~0); 503#L246 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 508#L304 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret21, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 525#L278-1 assume !(0 == ~pumpRunning~0); 414#L253 havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 423#L182-3 __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 424#L109 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 500#L115-1 [2021-10-21 19:24:27,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:27,129 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-21 19:24:27,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:27,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612200060] [2021-10-21 19:24:27,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:27,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:24:27,189 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:24:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:24:27,258 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:24:27,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:27,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1411824415, now seen corresponding path program 1 times [2021-10-21 19:24:27,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:27,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862735543] [2021-10-21 19:24:27,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:27,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:24:27,277 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 19:24:27,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:24:27,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862735543] [2021-10-21 19:24:27,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862735543] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:24:27,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:24:27,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:24:27,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552129433] [2021-10-21 19:24:27,280 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:24:27,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:24:27,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:24:27,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:24:27,281 INFO L87 Difference]: Start difference. First operand 246 states and 360 transitions. cyclomatic complexity: 117 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:27,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:27,359 INFO L93 Difference]: Finished difference Result 341 states and 478 transitions. [2021-10-21 19:24:27,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:24:27,360 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 341 states and 478 transitions. [2021-10-21 19:24:27,364 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 239 [2021-10-21 19:24:27,369 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 341 states to 341 states and 478 transitions. [2021-10-21 19:24:27,369 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 341 [2021-10-21 19:24:27,370 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 341 [2021-10-21 19:24:27,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 341 states and 478 transitions. [2021-10-21 19:24:27,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:24:27,373 INFO L681 BuchiCegarLoop]: Abstraction has 341 states and 478 transitions. [2021-10-21 19:24:27,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states and 478 transitions. [2021-10-21 19:24:27,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2021-10-21 19:24:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 341 states have (on average 1.401759530791789) internal successors, (478), 340 states have internal predecessors, (478), 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 19:24:27,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 478 transitions. [2021-10-21 19:24:27,393 INFO L704 BuchiCegarLoop]: Abstraction has 341 states and 478 transitions. [2021-10-21 19:24:27,393 INFO L587 BuchiCegarLoop]: Abstraction has 341 states and 478 transitions. [2021-10-21 19:24:27,393 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:24:27,393 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 341 states and 478 transitions. [2021-10-21 19:24:27,396 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 239 [2021-10-21 19:24:27,397 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:24:27,397 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:24:27,398 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:24:27,398 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:27,398 INFO L791 eck$LassoCheckResult]: Stem: 1150#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.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);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1080#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 1081#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; 1149#L92 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 1064#L540 assume 0 != main_~tmp~5; 1065#L516 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1103#L115-1 [2021-10-21 19:24:27,399 INFO L793 eck$LassoCheckResult]: Loop: 1103#L115-1 assume !false; 1041#L565 assume test_~splverifierCounter~0 < 4; 1042#L566 test_~tmp~6 := test_#t~nondet43;havoc test_#t~nondet43; 1235#L574 assume !(0 != test_~tmp~6); 1233#L574-1 test_~tmp___0~2 := test_#t~nondet44;havoc test_#t~nondet44; 1099#L584 assume !(0 != test_~tmp___0~2); 1100#L584-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 1136#L594 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1137#L602-1 assume !(0 != ~pumpRunning~0); 1112#L246 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 1113#L304 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret21, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 1132#L278-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 1114#L222-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~4 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 1048#L227-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 1049#L423-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 1142#L423-5 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 1107#L429-1 processEnvironment__wrappee__methaneQuery_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~1 := processEnvironment__wrappee__methaneQuery_#t~ret21;havoc processEnvironment__wrappee__methaneQuery_#t~ret21; 1108#L282-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1); 1020#L253 havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 1017#L182-3 __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 1018#L109 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 1103#L115-1 [2021-10-21 19:24:27,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:27,399 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-21 19:24:27,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:27,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591683734] [2021-10-21 19:24:27,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:27,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:24:27,496 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:24:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:24:27,591 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:24:27,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:27,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1301686415, now seen corresponding path program 1 times [2021-10-21 19:24:27,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:27,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375311679] [2021-10-21 19:24:27,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:27,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:24:27,626 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 19:24:27,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:24:27,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375311679] [2021-10-21 19:24:27,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375311679] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:24:27,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:24:27,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:24:27,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687670049] [2021-10-21 19:24:27,628 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:24:27,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:24:27,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:24:27,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:24:27,629 INFO L87 Difference]: Start difference. First operand 341 states and 478 transitions. cyclomatic complexity: 140 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:27,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:27,720 INFO L93 Difference]: Finished difference Result 963 states and 1326 transitions. [2021-10-21 19:24:27,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:24:27,720 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 963 states and 1326 transitions. [2021-10-21 19:24:27,730 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 685 [2021-10-21 19:24:27,739 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 963 states to 963 states and 1326 transitions. [2021-10-21 19:24:27,739 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 963 [2021-10-21 19:24:27,740 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 963 [2021-10-21 19:24:27,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 963 states and 1326 transitions. [2021-10-21 19:24:27,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:24:27,744 INFO L681 BuchiCegarLoop]: Abstraction has 963 states and 1326 transitions. [2021-10-21 19:24:27,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states and 1326 transitions. [2021-10-21 19:24:27,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 365. [2021-10-21 19:24:27,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 365 states have (on average 1.3753424657534246) internal successors, (502), 364 states have internal predecessors, (502), 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 19:24:27,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 502 transitions. [2021-10-21 19:24:27,766 INFO L704 BuchiCegarLoop]: Abstraction has 365 states and 502 transitions. [2021-10-21 19:24:27,766 INFO L587 BuchiCegarLoop]: Abstraction has 365 states and 502 transitions. [2021-10-21 19:24:27,766 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:24:27,766 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 365 states and 502 transitions. [2021-10-21 19:24:27,769 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 255 [2021-10-21 19:24:27,769 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:24:27,769 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:24:27,770 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:24:27,770 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:27,771 INFO L791 eck$LassoCheckResult]: Stem: 2499#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.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);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 2398#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 2399#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; 2498#L92 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 2384#L540 assume 0 != main_~tmp~5; 2385#L516 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2427#L115-1 [2021-10-21 19:24:27,771 INFO L793 eck$LassoCheckResult]: Loop: 2427#L115-1 assume !false; 2357#L565 assume test_~splverifierCounter~0 < 4; 2358#L566 test_~tmp~6 := test_#t~nondet43;havoc test_#t~nondet43; 2414#L574 assume !(0 != test_~tmp~6); 2328#L574-1 test_~tmp___0~2 := test_#t~nondet44;havoc test_#t~nondet44; 2507#L584 assume !(0 != test_~tmp___0~2); 2587#L584-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 2479#L594 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2339#L602-1 assume !(0 != ~pumpRunning~0); 2585#L246 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 2581#L304 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret21, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 2580#L278-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 2440#L222-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~4 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 2441#L227-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 2508#L423-3 assume !(0 != isHighWaterLevel_~tmp~4);isHighWaterLevel_~tmp___0~1 := 1; 2485#L423-5 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 2433#L429-1 processEnvironment__wrappee__methaneQuery_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~1 := processEnvironment__wrappee__methaneQuery_#t~ret21;havoc processEnvironment__wrappee__methaneQuery_#t~ret21; 2434#L282-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1); 2321#L253 havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 2593#L182-3 __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 2496#L109 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 2427#L115-1 [2021-10-21 19:24:27,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:27,771 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-21 19:24:27,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:27,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308295751] [2021-10-21 19:24:27,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:27,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:24:27,802 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:24:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:24:27,843 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:24:27,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:27,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1218273519, now seen corresponding path program 1 times [2021-10-21 19:24:27,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:27,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622022816] [2021-10-21 19:24:27,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:27,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:24:27,873 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 19:24:27,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:24:27,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622022816] [2021-10-21 19:24:27,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622022816] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:24:27,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:24:27,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:24:27,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149770066] [2021-10-21 19:24:27,875 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:24:27,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:24:27,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:24:27,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:24:27,877 INFO L87 Difference]: Start difference. First operand 365 states and 502 transitions. cyclomatic complexity: 140 Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:24:28,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:28,003 INFO L93 Difference]: Finished difference Result 879 states and 1200 transitions. [2021-10-21 19:24:28,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:24:28,004 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 879 states and 1200 transitions. [2021-10-21 19:24:28,014 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 629 [2021-10-21 19:24:28,021 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 879 states to 879 states and 1200 transitions. [2021-10-21 19:24:28,022 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 879 [2021-10-21 19:24:28,023 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 879 [2021-10-21 19:24:28,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 879 states and 1200 transitions. [2021-10-21 19:24:28,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:24:28,027 INFO L681 BuchiCegarLoop]: Abstraction has 879 states and 1200 transitions. [2021-10-21 19:24:28,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states and 1200 transitions. [2021-10-21 19:24:28,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 401. [2021-10-21 19:24:28,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 401 states have (on average 1.341645885286783) internal successors, (538), 400 states have internal predecessors, (538), 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 19:24:28,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 538 transitions. [2021-10-21 19:24:28,046 INFO L704 BuchiCegarLoop]: Abstraction has 401 states and 538 transitions. [2021-10-21 19:24:28,046 INFO L587 BuchiCegarLoop]: Abstraction has 401 states and 538 transitions. [2021-10-21 19:24:28,046 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-21 19:24:28,052 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 401 states and 538 transitions. [2021-10-21 19:24:28,055 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 279 [2021-10-21 19:24:28,055 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:24:28,056 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:24:28,058 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:24:28,058 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:24:28,058 INFO L791 eck$LassoCheckResult]: Stem: 3764#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.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);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 3653#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 3654#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; 3759#L92 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 3637#L540 assume 0 != main_~tmp~5; 3638#L516 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 3712#L115-1 [2021-10-21 19:24:28,058 INFO L793 eck$LassoCheckResult]: Loop: 3712#L115-1 assume !false; 3816#L565 assume test_~splverifierCounter~0 < 4; 3755#L566 test_~tmp~6 := test_#t~nondet43;havoc test_#t~nondet43; 3670#L574 assume !(0 != test_~tmp~6); 3585#L574-1 test_~tmp___0~2 := test_#t~nondet44;havoc test_#t~nondet44; 3768#L584 assume !(0 != test_~tmp___0~2); 3824#L584-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 3825#L594 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 3594#L602-1 assume !(0 != ~pumpRunning~0); 3693#L246 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 3694#L304 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret21, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 3731#L278-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 3695#L222-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~4 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 3697#L227-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 3798#L423-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 3799#L423-5 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 3687#L429-1 processEnvironment__wrappee__methaneQuery_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~1 := processEnvironment__wrappee__methaneQuery_#t~ret21;havoc processEnvironment__wrappee__methaneQuery_#t~ret21; 3688#L282-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1); 3722#L253 havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 3826#L182-3 __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 3822#L109 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 3712#L115-1 [2021-10-21 19:24:28,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:28,088 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 5 times [2021-10-21 19:24:28,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:28,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3177791] [2021-10-21 19:24:28,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:28,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:24:28,135 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:24:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:24:28,183 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:24:28,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:28,184 INFO L82 PathProgramCache]: Analyzing trace with hash 621628045, now seen corresponding path program 1 times [2021-10-21 19:24:28,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:28,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354034179] [2021-10-21 19:24:28,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:28,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:24:28,194 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:24:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:24:28,208 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:24:28,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:28,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1077699239, now seen corresponding path program 1 times [2021-10-21 19:24:28,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:28,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193304381] [2021-10-21 19:24:28,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:28,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:24:28,284 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 19:24:28,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:24:28,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193304381] [2021-10-21 19:24:28,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193304381] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:24:28,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:24:28,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:24:28,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619442908] [2021-10-21 19:24:28,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:24:28,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:24:28,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:24:28,568 INFO L87 Difference]: Start difference. First operand 401 states and 538 transitions. cyclomatic complexity: 140 Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 19:24:28,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:24:28,778 INFO L93 Difference]: Finished difference Result 1363 states and 1825 transitions. [2021-10-21 19:24:28,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:24:28,779 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1363 states and 1825 transitions. [2021-10-21 19:24:28,791 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 1003 [2021-10-21 19:24:28,805 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1363 states to 1363 states and 1825 transitions. [2021-10-21 19:24:28,806 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1363 [2021-10-21 19:24:28,807 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1363 [2021-10-21 19:24:28,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1363 states and 1825 transitions. [2021-10-21 19:24:28,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:24:28,810 INFO L681 BuchiCegarLoop]: Abstraction has 1363 states and 1825 transitions. [2021-10-21 19:24:28,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states and 1825 transitions. [2021-10-21 19:24:28,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 796. [2021-10-21 19:24:28,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 796 states have (on average 1.3241206030150754) internal successors, (1054), 795 states have internal predecessors, (1054), 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 19:24:28,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1054 transitions. [2021-10-21 19:24:28,832 INFO L704 BuchiCegarLoop]: Abstraction has 796 states and 1054 transitions. [2021-10-21 19:24:28,832 INFO L587 BuchiCegarLoop]: Abstraction has 796 states and 1054 transitions. [2021-10-21 19:24:28,832 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-21 19:24:28,832 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 796 states and 1054 transitions. [2021-10-21 19:24:28,853 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 558 [2021-10-21 19:24:28,853 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:24:28,853 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:24:28,854 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:24:28,854 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] [2021-10-21 19:24:28,855 INFO L791 eck$LassoCheckResult]: Stem: 5538#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.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);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 5441#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 5442#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; 5535#L92 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 5424#L540 assume 0 != main_~tmp~5; 5425#L516 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 5495#L115-1 [2021-10-21 19:24:28,861 INFO L793 eck$LassoCheckResult]: Loop: 5495#L115-1 assume !false; 5780#L565 assume test_~splverifierCounter~0 < 4; 5779#L566 test_~tmp~6 := test_#t~nondet43;havoc test_#t~nondet43; 5778#L574 assume !(0 != test_~tmp~6); 5776#L574-1 test_~tmp___0~2 := test_#t~nondet44;havoc test_#t~nondet44; 5774#L584 assume !(0 != test_~tmp___0~2); 5771#L584-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 5742#L594 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 5528#L602-1 assume !(0 != ~pumpRunning~0); 5480#L246 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 5481#L304 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret21, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 5511#L278-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 5482#L222-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~4 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 5403#L227-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 5404#L423-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 5521#L423-5 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 5471#L429-1 processEnvironment__wrappee__methaneQuery_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~1 := processEnvironment__wrappee__methaneQuery_#t~ret21;havoc processEnvironment__wrappee__methaneQuery_#t~ret21; 5472#L282-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1); 5499#L253 havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 5370#L182-3 __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 5371#L109 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~0);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~3;havoc getWaterLevel_~retValue_acc~3;getWaterLevel_~retValue_acc~3 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~3; 5539#L214 __utac_acc__Specification3_spec__1_#t~ret9 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret9;havoc __utac_acc__Specification3_spec__1_#t~ret9; 5540#L115 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 5495#L115-1 [2021-10-21 19:24:28,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:28,861 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 6 times [2021-10-21 19:24:28,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:28,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228685429] [2021-10-21 19:24:28,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:28,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:24:28,918 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:24:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:24:28,969 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:24:28,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:28,970 INFO L82 PathProgramCache]: Analyzing trace with hash 384105791, now seen corresponding path program 1 times [2021-10-21 19:24:28,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:28,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070037469] [2021-10-21 19:24:28,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:28,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:24:28,984 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:24:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:24:29,001 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:24:29,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:24:29,002 INFO L82 PathProgramCache]: Analyzing trace with hash 581859033, now seen corresponding path program 1 times [2021-10-21 19:24:29,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:24:29,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058243670] [2021-10-21 19:24:29,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:24:29,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:24:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:24:29,049 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:24:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:24:29,130 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:25:22,929 WARN L207 SmtUtils]: Spent 53.47 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-21 19:26:17,676 WARN L207 SmtUtils]: Spent 26.40 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-21 19:26:17,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:26:17 BoogieIcfgContainer [2021-10-21 19:26:17,868 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:26:17,868 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:26:17,869 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:26:17,869 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:26:17,869 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:24:26" (3/4) ... [2021-10-21 19:26:17,872 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 19:26:17,918 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4d24ef-c3cd-42b9-aaaa-75f190123d55/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:26:17,918 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:26:17,919 INFO L168 Benchmark]: Toolchain (without parser) took 113239.26 ms. Allocated memory was 92.3 MB in the beginning and 172.0 MB in the end (delta: 79.7 MB). Free memory was 55.0 MB in the beginning and 66.4 MB in the end (delta: -11.4 MB). Peak memory consumption was 66.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:26:17,920 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory is still 72.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:26:17,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 478.61 ms. Allocated memory was 92.3 MB in the beginning and 130.0 MB in the end (delta: 37.7 MB). Free memory was 54.8 MB in the beginning and 97.0 MB in the end (delta: -42.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:26:17,921 INFO L168 Benchmark]: Boogie Procedure Inliner took 123.78 ms. Allocated memory is still 130.0 MB. Free memory was 97.0 MB in the beginning and 92.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:26:17,921 INFO L168 Benchmark]: Boogie Preprocessor took 105.61 ms. Allocated memory is still 130.0 MB. Free memory was 92.8 MB in the beginning and 90.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:26:17,922 INFO L168 Benchmark]: RCFGBuilder took 955.67 ms. Allocated memory is still 130.0 MB. Free memory was 90.2 MB in the beginning and 47.2 MB in the end (delta: 43.0 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:26:17,923 INFO L168 Benchmark]: BuchiAutomizer took 111519.94 ms. Allocated memory was 130.0 MB in the beginning and 172.0 MB in the end (delta: 41.9 MB). Free memory was 46.7 MB in the beginning and 69.4 MB in the end (delta: -22.7 MB). Peak memory consumption was 53.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:26:17,923 INFO L168 Benchmark]: Witness Printer took 49.71 ms. Allocated memory is still 172.0 MB. Free memory was 69.4 MB in the beginning and 66.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:26:17,931 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory is still 72.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 478.61 ms. Allocated memory was 92.3 MB in the beginning and 130.0 MB in the end (delta: 37.7 MB). Free memory was 54.8 MB in the beginning and 97.0 MB in the end (delta: -42.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 123.78 ms. Allocated memory is still 130.0 MB. Free memory was 97.0 MB in the beginning and 92.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 105.61 ms. Allocated memory is still 130.0 MB. Free memory was 92.8 MB in the beginning and 90.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 955.67 ms. Allocated memory is still 130.0 MB. Free memory was 90.2 MB in the beginning and 47.2 MB in the end (delta: 43.0 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 111519.94 ms. Allocated memory was 130.0 MB in the beginning and 172.0 MB in the end (delta: 41.9 MB). Free memory was 46.7 MB in the beginning and 69.4 MB in the end (delta: -22.7 MB). Peak memory consumption was 53.6 MB. Max. memory is 16.1 GB. * Witness Printer took 49.71 ms. Allocated memory is still 172.0 MB. Free memory was 69.4 MB in the beginning and 66.4 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 5 terminating modules (5 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.5 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 796 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 111.4s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 110.4s. Construction of modules took 0.3s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 110.9ms AutomataMinimizationTime, 5 MinimizatonAttempts, 1645 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 796 states and ocurred in iteration 5. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1267 SDtfs, 1958 SDslu, 2060 SDs, 0 SdLazy, 329 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 317.5ms Time LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 564]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6458e2db=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@79580176=70, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4dc1931a=0, NULL=49456, methaneLevelCritical=0, NULL=0, tmp=0, NULL=49452, NULL=0, tmp___1=0, retValue_acc=0, NULL=0, NULL=49446, NULL=24533, tmp=0, cleanupTimeShifts=4, NULL=49442, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@21b4fbdd=0, waterLevel=1, NULL=0, NULL=0, NULL=0, retValue_acc=1, \result=1, head=0, pumpRunning=0, NULL=49439, retValue_acc=1, NULL=0, NULL=0, NULL=0, tmp=1, \result=1, NULL=0, NULL=0, tmp=1, NULL=0, NULL=49438, NULL=0, NULL=0, NULL=0, tmp___0=0, NULL=49453, NULL=49447, NULL=49448, tmp=0, head=0, tmp=0, NULL=0, NULL=0, NULL=49460, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7547d45f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@180e6750=0, NULL=34211, retValue_acc=0, tmp___0=0, NULL=0, NULL=0, NULL=49440, NULL=0, NULL=0, tmp___0=1, NULL=49459, NULL=49458, NULL=0, systemActive=1, NULL=49457, \result=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@245c879=0, NULL=49443, \result=0, retValue_acc=0, NULL=49437, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@263bf4ac=0, NULL=49445, \result=0, NULL=49450, NULL=0, NULL=0, NULL=49455, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2d8d1b8b=0, NULL=34210, NULL=34212, retValue_acc=1, tmp___2=70, splverifierCounter=0, NULL=0, \result=0, NULL=49441, NULL=49454, tmp___1=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c9f35f4=0, NULL=49444, NULL=49449, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2be6ddde=0, NULL=49451} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L139] int waterLevel = 1; [L140] int methaneLevelCritical = 0; [L239] int pumpRunning = 0; [L240] int systemActive = 1; [L457] int cleanupTimeShifts = 4; [L792] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L531] int retValue_acc ; [L532] int tmp ; [L88] int retValue_acc ; [L91] retValue_acc = 1 [L92] return (retValue_acc); [L538] tmp = valid_product() [L540] COND TRUE \read(tmp) [L555] int splverifierCounter ; [L556] int tmp ; [L557] int tmp___0 ; [L558] int tmp___1 ; [L559] int tmp___2 ; [L562] splverifierCounter = 0 Loop: [L564] COND TRUE 1 [L566] COND TRUE splverifierCounter < 4 [L572] tmp = __VERIFIER_nondet_int() [L574] COND FALSE !(\read(tmp)) [L582] tmp___0 = __VERIFIER_nondet_int() [L584] COND FALSE !(\read(tmp___0)) [L592] tmp___2 = __VERIFIER_nondet_int() [L594] COND TRUE \read(tmp___2) [L452] systemActive = 1 [L246] COND FALSE !(\read(pumpRunning)) [L253] COND TRUE \read(systemActive) [L301] int tmp ; [L304] COND FALSE !(\read(pumpRunning)) [L275] int tmp ; [L278] COND TRUE ! pumpRunning [L415] int retValue_acc ; [L416] int tmp ; [L417] int tmp___0 ; [L219] int retValue_acc ; [L222] COND TRUE waterLevel < 2 [L223] retValue_acc = 1 [L224] return (retValue_acc); [L421] tmp = isHighWaterSensorDry() [L423] COND TRUE \read(tmp) [L424] tmp___0 = 0 [L428] retValue_acc = tmp___0 [L429] return (retValue_acc); [L280] tmp = isHighWaterLevel() [L282] COND FALSE !(\read(tmp)) [L101] int tmp ; [L102] int tmp___0 ; [L103] int tmp___1 ; [L178] int retValue_acc ; [L181] retValue_acc = methaneLevelCritical [L182] return (retValue_acc); [L107] tmp = isMethaneLevelCritical() [L109] COND FALSE !(\read(tmp)) [L210] int retValue_acc ; [L213] retValue_acc = waterLevel [L214] return (retValue_acc); [L113] tmp___0 = getWaterLevel() [L115] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:26:17,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e4d24ef-c3cd-42b9-aaaa-75f190123d55/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...