./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9910c47-e768-46bd-aee6-18018237b0fd/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9910c47-e768-46bd-aee6-18018237b0fd/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9910c47-e768-46bd-aee6-18018237b0fd/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9910c47-e768-46bd-aee6-18018237b0fd/bin/uautomizer-verify-bycVGegfSx/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9910c47-e768-46bd-aee6-18018237b0fd/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9910c47-e768-46bd-aee6-18018237b0fd/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --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 1849026681bb840017399851b7fbd7074a9bb56e2104927ac4a62c52d8de2e86 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:25:16,842 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:25:16,916 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9910c47-e768-46bd-aee6-18018237b0fd/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-21 22:25:16,922 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:25:16,923 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:25:16,950 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:25:16,959 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:25:16,960 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:25:16,961 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:25:16,962 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:25:16,963 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:25:16,964 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:25:16,965 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:25:16,966 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-21 22:25:16,969 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-21 22:25:16,969 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-21 22:25:16,971 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-21 22:25:16,975 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-21 22:25:16,976 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-21 22:25:16,976 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:25:16,978 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-21 22:25:16,979 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:25:16,979 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:25:16,980 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:25:16,980 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:25:16,980 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-21 22:25:16,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-21 22:25:16,981 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-21 22:25:16,982 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:25:16,982 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:25:16,983 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:25:16,984 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-21 22:25:16,984 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:25:16,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:25:16,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:25:16,985 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:25:16,986 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:25:16,986 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-21 22:25:16,986 INFO L153 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_c9910c47-e768-46bd-aee6-18018237b0fd/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9910c47-e768-46bd-aee6-18018237b0fd/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1849026681bb840017399851b7fbd7074a9bb56e2104927ac4a62c52d8de2e86 [2023-11-21 22:25:17,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:25:17,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:25:17,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:25:17,289 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:25:17,290 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:25:17,291 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9910c47-e768-46bd-aee6-18018237b0fd/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2023-11-21 22:25:20,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:25:20,746 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:25:20,747 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9910c47-e768-46bd-aee6-18018237b0fd/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2023-11-21 22:25:20,775 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9910c47-e768-46bd-aee6-18018237b0fd/bin/uautomizer-verify-bycVGegfSx/data/c024063bb/dadff7fdb08b4e02adda695c6738d908/FLAGed24d6701 [2023-11-21 22:25:20,791 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9910c47-e768-46bd-aee6-18018237b0fd/bin/uautomizer-verify-bycVGegfSx/data/c024063bb/dadff7fdb08b4e02adda695c6738d908 [2023-11-21 22:25:20,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:25:20,796 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:25:20,797 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:25:20,797 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:25:20,805 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:25:20,807 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:25:20" (1/1) ... [2023-11-21 22:25:20,809 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d87b510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:20, skipping insertion in model container [2023-11-21 22:25:20,809 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:25:20" (1/1) ... [2023-11-21 22:25:20,872 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:25:21,216 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:25:21,240 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:25:21,251 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] [2023-11-21 22:25:21,253 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [150] [2023-11-21 22:25:21,253 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [516] [2023-11-21 22:25:21,253 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [554] [2023-11-21 22:25:21,254 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [655] [2023-11-21 22:25:21,254 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [836] [2023-11-21 22:25:21,254 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [905] [2023-11-21 22:25:21,255 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [914] [2023-11-21 22:25:21,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:25:21,346 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:25:21,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:21 WrapperNode [2023-11-21 22:25:21,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:25:21,349 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:25:21,349 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:25:21,349 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:25:21,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:21" (1/1) ... [2023-11-21 22:25:21,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:21" (1/1) ... [2023-11-21 22:25:21,429 INFO L138 Inliner]: procedures = 55, calls = 98, calls flagged for inlining = 51, calls inlined = 54, statements flattened = 365 [2023-11-21 22:25:21,429 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:25:21,430 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:25:21,430 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:25:21,430 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:25:21,442 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:21" (1/1) ... [2023-11-21 22:25:21,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:21" (1/1) ... [2023-11-21 22:25:21,445 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:21" (1/1) ... [2023-11-21 22:25:21,458 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 22:25:21,459 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:21" (1/1) ... [2023-11-21 22:25:21,459 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:21" (1/1) ... [2023-11-21 22:25:21,466 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:21" (1/1) ... [2023-11-21 22:25:21,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:21" (1/1) ... [2023-11-21 22:25:21,474 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:21" (1/1) ... [2023-11-21 22:25:21,476 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:21" (1/1) ... [2023-11-21 22:25:21,479 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:25:21,480 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:25:21,481 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:25:21,481 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:25:21,482 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:21" (1/1) ... [2023-11-21 22:25:21,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:25:21,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9910c47-e768-46bd-aee6-18018237b0fd/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:25:21,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9910c47-e768-46bd-aee6-18018237b0fd/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:25:21,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9910c47-e768-46bd-aee6-18018237b0fd/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-21 22:25:21,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:25:21,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:25:21,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:25:21,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:25:21,694 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:25:21,697 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:25:22,088 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:25:22,108 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:25:22,109 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 22:25:22,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:25:22 BoogieIcfgContainer [2023-11-21 22:25:22,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:25:22,116 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-21 22:25:22,116 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-21 22:25:22,120 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-21 22:25:22,120 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:25:22,121 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 10:25:20" (1/3) ... [2023-11-21 22:25:22,122 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47af11cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 10:25:22, skipping insertion in model container [2023-11-21 22:25:22,123 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:25:22,123 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:21" (2/3) ... [2023-11-21 22:25:22,125 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47af11cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 10:25:22, skipping insertion in model container [2023-11-21 22:25:22,125 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:25:22,125 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:25:22" (3/3) ... [2023-11-21 22:25:22,127 INFO L332 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product36.cil.c [2023-11-21 22:25:22,188 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-21 22:25:22,188 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-21 22:25:22,188 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-21 22:25:22,188 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-21 22:25:22,189 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-21 22:25:22,189 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-21 22:25:22,189 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-21 22:25:22,189 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-21 22:25:22,220 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 117 states, 116 states have (on average 1.3793103448275863) internal successors, (160), 116 states have internal predecessors, (160), 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) [2023-11-21 22:25:22,244 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2023-11-21 22:25:22,244 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:25:22,244 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:25:22,252 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:22,252 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:22,252 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-21 22:25:22,253 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 117 states, 116 states have (on average 1.3793103448275863) internal successors, (160), 116 states have internal predecessors, (160), 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) [2023-11-21 22:25:22,280 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2023-11-21 22:25:22,281 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:25:22,281 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:25:22,282 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:22,282 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:22,288 INFO L748 eck$LassoCheckResult]: Stem: 33#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 41#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret33#1, main_~retValue_acc~8#1, main_~tmp~3#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true; 27#select_helpers_returnLabel#1true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 94#select_features_returnLabel#1true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~7#1;havoc valid_product_~retValue_acc~7#1;valid_product_~retValue_acc~7#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~7#1; 85#valid_product_returnLabel#1true main_#t~ret33#1 := valid_product_#res#1;havoc valid_product_~retValue_acc~7#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret33#1;havoc main_#t~ret33#1; 45#L642true assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 73#setup_returnLabel#1true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 93#__utac_acc__Specification2_spec__1_returnLabel#1true assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet45#1, test_#t~nondet46#1, test_#t~nondet47#1, test_#t~nondet48#1, test_~splverifierCounter~0#1, test_~tmp~6#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~6#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 66#L847-2true [2023-11-21 22:25:22,289 INFO L750 eck$LassoCheckResult]: Loop: 66#L847-2true assume !false; 46#L848true assume test_~splverifierCounter~0#1 < 4; 112#L849true havoc test_#t~nondet45#1;test_~tmp~6#1 := test_#t~nondet45#1;havoc test_#t~nondet45#1; 89#L857true assume !(0 != test_~tmp~6#1); 76#L857-2true havoc test_#t~nondet46#1;test_~tmp___0~1#1 := test_#t~nondet46#1;havoc test_#t~nondet46#1; 99#L867true assume !(0 != test_~tmp___0~1#1); 34#L867-2true havoc test_#t~nondet47#1;test_~tmp___2~0#1 := test_#t~nondet47#1;havoc test_#t~nondet47#1; 22#L877true assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 53#startSystem_returnLabel#1true assume { :end_inline_startSystem } true; 48#L885-2true assume { :begin_inline_timeShift } true; 101#L669true assume !(0 != ~pumpRunning~0); 49#L669-2true assume !(0 != ~systemActive~0); 5#L676-1true assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret49#1, __utac_acc__Specification2_spec__2_#t~ret50#1, __utac_acc__Specification2_spec__2_~tmp~7#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~7#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 109#isMethaneLevelCritical_returnLabel#1true __utac_acc__Specification2_spec__2_#t~ret49#1 := isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~7#1 := __utac_acc__Specification2_spec__2_#t~ret49#1;havoc __utac_acc__Specification2_spec__2_#t~ret49#1; 78#L932true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7#1);~methAndRunningLastTime~0 := 0; 114#L932-1true havoc __utac_acc__Specification2_spec__2_#t~ret49#1, __utac_acc__Specification2_spec__2_#t~ret50#1, __utac_acc__Specification2_spec__2_~tmp~7#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :end_inline___utac_acc__Specification2_spec__2 } true; 65#timeShift_returnLabel#1true assume { :end_inline_timeShift } true; 66#L847-2true [2023-11-21 22:25:22,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:22,295 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 1 times [2023-11-21 22:25:22,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:22,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209178803] [2023-11-21 22:25:22,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:22,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:22,405 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:25:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:22,445 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:25:22,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:22,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1568108619, now seen corresponding path program 1 times [2023-11-21 22:25:22,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:22,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903376970] [2023-11-21 22:25:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:22,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:22,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:22,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:22,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903376970] [2023-11-21 22:25:22,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903376970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:22,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:22,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:25:22,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224665569] [2023-11-21 22:25:22,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:22,624 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 22:25:22,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:22,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:25:22,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:25:22,667 INFO L87 Difference]: Start difference. First operand has 117 states, 116 states have (on average 1.3793103448275863) internal successors, (160), 116 states have internal predecessors, (160), 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 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-21 22:25:22,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:22,735 INFO L93 Difference]: Finished difference Result 212 states and 280 transitions. [2023-11-21 22:25:22,737 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 212 states and 280 transitions. [2023-11-21 22:25:22,744 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 136 [2023-11-21 22:25:22,752 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 212 states to 192 states and 259 transitions. [2023-11-21 22:25:22,753 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 192 [2023-11-21 22:25:22,754 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 192 [2023-11-21 22:25:22,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 192 states and 259 transitions. [2023-11-21 22:25:22,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:22,757 INFO L218 hiAutomatonCegarLoop]: Abstraction has 192 states and 259 transitions. [2023-11-21 22:25:22,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states and 259 transitions. [2023-11-21 22:25:22,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 189. [2023-11-21 22:25:22,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 189 states have (on average 1.3492063492063493) internal successors, (255), 188 states have internal predecessors, (255), 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) [2023-11-21 22:25:22,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 255 transitions. [2023-11-21 22:25:22,805 INFO L240 hiAutomatonCegarLoop]: Abstraction has 189 states and 255 transitions. [2023-11-21 22:25:22,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:22,813 INFO L428 stractBuchiCegarLoop]: Abstraction has 189 states and 255 transitions. [2023-11-21 22:25:22,813 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-21 22:25:22,813 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 189 states and 255 transitions. [2023-11-21 22:25:22,818 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 133 [2023-11-21 22:25:22,818 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:25:22,818 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:25:22,819 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:22,819 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:22,820 INFO L748 eck$LassoCheckResult]: Stem: 384#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 385#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret33#1, main_~retValue_acc~8#1, main_~tmp~3#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true; 376#select_helpers_returnLabel#1 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 377#select_features_returnLabel#1 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~7#1;havoc valid_product_~retValue_acc~7#1;valid_product_~retValue_acc~7#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~7#1; 433#valid_product_returnLabel#1 main_#t~ret33#1 := valid_product_#res#1;havoc valid_product_~retValue_acc~7#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret33#1;havoc main_#t~ret33#1; 393#L642 assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 394#setup_returnLabel#1 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 423#__utac_acc__Specification2_spec__1_returnLabel#1 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet45#1, test_#t~nondet46#1, test_#t~nondet47#1, test_#t~nondet48#1, test_~splverifierCounter~0#1, test_~tmp~6#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~6#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 417#L847-2 [2023-11-21 22:25:22,820 INFO L750 eck$LassoCheckResult]: Loop: 417#L847-2 assume !false; 395#L848 assume test_~splverifierCounter~0#1 < 4; 396#L849 havoc test_#t~nondet45#1;test_~tmp~6#1 := test_#t~nondet45#1;havoc test_#t~nondet45#1; 435#L857 assume !(0 != test_~tmp~6#1); 426#L857-2 havoc test_#t~nondet46#1;test_~tmp___0~1#1 := test_#t~nondet46#1;havoc test_#t~nondet46#1; 427#L867 assume !(0 != test_~tmp___0~1#1); 347#L867-2 havoc test_#t~nondet47#1;test_~tmp___2~0#1 := test_#t~nondet47#1;havoc test_#t~nondet47#1; 368#L877 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 369#startSystem_returnLabel#1 assume { :end_inline_startSystem } true; 399#L885-2 assume { :begin_inline_timeShift } true; 400#L669 assume !(0 != ~pumpRunning~0); 371#L669-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret34#1, processEnvironment_~tmp~4#1;havoc processEnvironment_~tmp~4#1; 401#L701 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 425#processEnvironment__wrappee__base_returnLabel#2 assume { :end_inline_processEnvironment__wrappee__base } true; 349#L701-1 havoc processEnvironment_#t~ret34#1, processEnvironment_~tmp~4#1;assume { :end_inline_processEnvironment } true; 340#L676-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret49#1, __utac_acc__Specification2_spec__2_#t~ret50#1, __utac_acc__Specification2_spec__2_~tmp~7#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~7#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 341#isMethaneLevelCritical_returnLabel#1 __utac_acc__Specification2_spec__2_#t~ret49#1 := isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~7#1 := __utac_acc__Specification2_spec__2_#t~ret49#1;havoc __utac_acc__Specification2_spec__2_#t~ret49#1; 429#L932 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7#1);~methAndRunningLastTime~0 := 0; 388#L932-1 havoc __utac_acc__Specification2_spec__2_#t~ret49#1, __utac_acc__Specification2_spec__2_#t~ret50#1, __utac_acc__Specification2_spec__2_~tmp~7#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :end_inline___utac_acc__Specification2_spec__2 } true; 416#timeShift_returnLabel#1 assume { :end_inline_timeShift } true; 417#L847-2 [2023-11-21 22:25:22,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:22,821 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 2 times [2023-11-21 22:25:22,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:22,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627052526] [2023-11-21 22:25:22,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:22,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:22,847 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:25:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:22,872 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:25:22,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:22,873 INFO L85 PathProgramCache]: Analyzing trace with hash 309427387, now seen corresponding path program 1 times [2023-11-21 22:25:22,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:22,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7585564] [2023-11-21 22:25:22,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:22,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:22,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:22,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7585564] [2023-11-21 22:25:22,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7585564] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:22,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:22,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:25:22,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538476197] [2023-11-21 22:25:22,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:22,939 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 22:25:22,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:22,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:25:22,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:25:22,941 INFO L87 Difference]: Start difference. First operand 189 states and 255 transitions. cyclomatic complexity: 69 Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:23,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:23,045 INFO L93 Difference]: Finished difference Result 301 states and 396 transitions. [2023-11-21 22:25:23,045 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 301 states and 396 transitions. [2023-11-21 22:25:23,050 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 219 [2023-11-21 22:25:23,054 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 301 states to 301 states and 396 transitions. [2023-11-21 22:25:23,054 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 301 [2023-11-21 22:25:23,056 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 301 [2023-11-21 22:25:23,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 301 states and 396 transitions. [2023-11-21 22:25:23,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:23,058 INFO L218 hiAutomatonCegarLoop]: Abstraction has 301 states and 396 transitions. [2023-11-21 22:25:23,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states and 396 transitions. [2023-11-21 22:25:23,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2023-11-21 22:25:23,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 301 states have (on average 1.3156146179401993) internal successors, (396), 300 states have internal predecessors, (396), 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) [2023-11-21 22:25:23,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 396 transitions. [2023-11-21 22:25:23,081 INFO L240 hiAutomatonCegarLoop]: Abstraction has 301 states and 396 transitions. [2023-11-21 22:25:23,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:23,083 INFO L428 stractBuchiCegarLoop]: Abstraction has 301 states and 396 transitions. [2023-11-21 22:25:23,083 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-21 22:25:23,083 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 301 states and 396 transitions. [2023-11-21 22:25:23,086 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 219 [2023-11-21 22:25:23,087 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:25:23,087 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:25:23,088 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:23,088 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:23,088 INFO L748 eck$LassoCheckResult]: Stem: 883#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 884#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret33#1, main_~retValue_acc~8#1, main_~tmp~3#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true; 874#select_helpers_returnLabel#1 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 875#select_features_returnLabel#1 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~7#1;havoc valid_product_~retValue_acc~7#1;valid_product_~retValue_acc~7#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~7#1; 941#valid_product_returnLabel#1 main_#t~ret33#1 := valid_product_#res#1;havoc valid_product_~retValue_acc~7#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret33#1;havoc main_#t~ret33#1; 895#L642 assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 896#setup_returnLabel#1 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 930#__utac_acc__Specification2_spec__1_returnLabel#1 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet45#1, test_#t~nondet46#1, test_#t~nondet47#1, test_#t~nondet48#1, test_~splverifierCounter~0#1, test_~tmp~6#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~6#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 949#L847-2 [2023-11-21 22:25:23,089 INFO L750 eck$LassoCheckResult]: Loop: 949#L847-2 assume !false; 975#L848 assume test_~splverifierCounter~0#1 < 4; 976#L849 havoc test_#t~nondet45#1;test_~tmp~6#1 := test_#t~nondet45#1;havoc test_#t~nondet45#1; 996#L857 assume !(0 != test_~tmp~6#1); 994#L857-2 havoc test_#t~nondet46#1;test_~tmp___0~1#1 := test_#t~nondet46#1;havoc test_#t~nondet46#1; 990#L867 assume !(0 != test_~tmp___0~1#1); 986#L867-2 havoc test_#t~nondet47#1;test_~tmp___2~0#1 := test_#t~nondet47#1;havoc test_#t~nondet47#1; 985#L877 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 908#startSystem_returnLabel#1 assume { :end_inline_startSystem } true; 901#L885-2 assume { :begin_inline_timeShift } true; 902#L669 assume !(0 != ~pumpRunning~0); 903#L669-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret34#1, processEnvironment_~tmp~4#1;havoc processEnvironment_~tmp~4#1; 904#L701 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret44#1, isHighWaterLevel_~retValue_acc~11#1, isHighWaterLevel_~tmp~5#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~11#1;havoc isHighWaterLevel_~tmp~5#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 915#L140 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 858#isHighWaterSensorDry_returnLabel#1 isHighWaterLevel_#t~ret44#1 := isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~5#1 := isHighWaterLevel_#t~ret44#1;havoc isHighWaterLevel_#t~ret44#1; 859#L803 assume 0 != isHighWaterLevel_~tmp~5#1;isHighWaterLevel_~tmp___0~0#1 := 0; 1028#L803-2 isHighWaterLevel_~retValue_acc~11#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~11#1; 946#isHighWaterLevel_returnLabel#1 processEnvironment_#t~ret34#1 := isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret44#1, isHighWaterLevel_~retValue_acc~11#1, isHighWaterLevel_~tmp~5#1, isHighWaterLevel_~tmp___0~0#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~4#1 := processEnvironment_#t~ret34#1;havoc processEnvironment_#t~ret34#1; 947#L705 assume !(0 != processEnvironment_~tmp~4#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1025#processEnvironment__wrappee__base_returnLabel#1 assume { :end_inline_processEnvironment__wrappee__base } true; 1067#L701-1 havoc processEnvironment_#t~ret34#1, processEnvironment_~tmp~4#1;assume { :end_inline_processEnvironment } true; 1066#L676-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret49#1, __utac_acc__Specification2_spec__2_#t~ret50#1, __utac_acc__Specification2_spec__2_~tmp~7#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~7#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 1064#isMethaneLevelCritical_returnLabel#1 __utac_acc__Specification2_spec__2_#t~ret49#1 := isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~7#1 := __utac_acc__Specification2_spec__2_#t~ret49#1;havoc __utac_acc__Specification2_spec__2_#t~ret49#1; 1061#L932 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7#1);~methAndRunningLastTime~0 := 0; 1057#L932-1 havoc __utac_acc__Specification2_spec__2_#t~ret49#1, __utac_acc__Specification2_spec__2_#t~ret50#1, __utac_acc__Specification2_spec__2_~tmp~7#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :end_inline___utac_acc__Specification2_spec__2 } true; 989#timeShift_returnLabel#1 assume { :end_inline_timeShift } true; 949#L847-2 [2023-11-21 22:25:23,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:23,090 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 3 times [2023-11-21 22:25:23,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:23,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025513348] [2023-11-21 22:25:23,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:23,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:23,117 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:25:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:23,149 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:25:23,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:23,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1003728347, now seen corresponding path program 1 times [2023-11-21 22:25:23,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:23,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282355272] [2023-11-21 22:25:23,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:23,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:23,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:23,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:23,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282355272] [2023-11-21 22:25:23,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282355272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:23,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:23,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:25:23,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947636629] [2023-11-21 22:25:23,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:23,275 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 22:25:23,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:23,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:25:23,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:25:23,277 INFO L87 Difference]: Start difference. First operand 301 states and 396 transitions. cyclomatic complexity: 98 Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-11-21 22:25:23,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:23,379 INFO L93 Difference]: Finished difference Result 600 states and 778 transitions. [2023-11-21 22:25:23,380 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 600 states and 778 transitions. [2023-11-21 22:25:23,386 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 442 [2023-11-21 22:25:23,396 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 600 states to 600 states and 778 transitions. [2023-11-21 22:25:23,397 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 600 [2023-11-21 22:25:23,399 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 600 [2023-11-21 22:25:23,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 600 states and 778 transitions. [2023-11-21 22:25:23,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:23,409 INFO L218 hiAutomatonCegarLoop]: Abstraction has 600 states and 778 transitions. [2023-11-21 22:25:23,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states and 778 transitions. [2023-11-21 22:25:23,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 313. [2023-11-21 22:25:23,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 313 states have (on average 1.3035143769968052) internal successors, (408), 312 states have internal predecessors, (408), 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) [2023-11-21 22:25:23,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 408 transitions. [2023-11-21 22:25:23,441 INFO L240 hiAutomatonCegarLoop]: Abstraction has 313 states and 408 transitions. [2023-11-21 22:25:23,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:25:23,443 INFO L428 stractBuchiCegarLoop]: Abstraction has 313 states and 408 transitions. [2023-11-21 22:25:23,443 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-21 22:25:23,443 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 313 states and 408 transitions. [2023-11-21 22:25:23,446 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 227 [2023-11-21 22:25:23,446 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:25:23,446 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:25:23,447 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:23,447 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:23,448 INFO L748 eck$LassoCheckResult]: Stem: 1790#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 1791#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret33#1, main_~retValue_acc~8#1, main_~tmp~3#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true; 1782#select_helpers_returnLabel#1 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1783#select_features_returnLabel#1 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~7#1;havoc valid_product_~retValue_acc~7#1;valid_product_~retValue_acc~7#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~7#1; 1856#valid_product_returnLabel#1 main_#t~ret33#1 := valid_product_#res#1;havoc valid_product_~retValue_acc~7#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret33#1;havoc main_#t~ret33#1; 1807#L642 assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 1808#setup_returnLabel#1 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 1845#__utac_acc__Specification2_spec__1_returnLabel#1 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet45#1, test_#t~nondet46#1, test_#t~nondet47#1, test_#t~nondet48#1, test_~splverifierCounter~0#1, test_~tmp~6#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~6#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1865#L847-2 [2023-11-21 22:25:23,448 INFO L750 eck$LassoCheckResult]: Loop: 1865#L847-2 assume !false; 1929#L848 assume test_~splverifierCounter~0#1 < 4; 1930#L849 havoc test_#t~nondet45#1;test_~tmp~6#1 := test_#t~nondet45#1;havoc test_#t~nondet45#1; 1981#L857 assume !(0 != test_~tmp~6#1); 1979#L857-2 havoc test_#t~nondet46#1;test_~tmp___0~1#1 := test_#t~nondet46#1;havoc test_#t~nondet46#1; 1977#L867 assume !(0 != test_~tmp___0~1#1); 1975#L867-2 havoc test_#t~nondet47#1;test_~tmp___2~0#1 := test_#t~nondet47#1;havoc test_#t~nondet47#1; 1882#L877 assume !(0 != test_~tmp___2~0#1);havoc test_#t~nondet48#1;test_~tmp___1~0#1 := test_#t~nondet48#1;havoc test_#t~nondet48#1; 1883#L885 assume !(0 != test_~tmp___1~0#1); 1813#L885-2 assume { :begin_inline_timeShift } true; 1814#L669 assume !(0 != ~pumpRunning~0); 1872#L669-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret34#1, processEnvironment_~tmp~4#1;havoc processEnvironment_~tmp~4#1; 1973#L701 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret44#1, isHighWaterLevel_~retValue_acc~11#1, isHighWaterLevel_~tmp~5#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~11#1;havoc isHighWaterLevel_~tmp~5#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 1828#L140 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~2#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 1829#isHighWaterSensorDry_returnLabel#1 isHighWaterLevel_#t~ret44#1 := isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~5#1 := isHighWaterLevel_#t~ret44#1;havoc isHighWaterLevel_#t~ret44#1; 1778#L803 assume !(0 != isHighWaterLevel_~tmp~5#1);isHighWaterLevel_~tmp___0~0#1 := 1; 1779#L803-2 isHighWaterLevel_~retValue_acc~11#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~11#1; 1862#isHighWaterLevel_returnLabel#1 processEnvironment_#t~ret34#1 := isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret44#1, isHighWaterLevel_~retValue_acc~11#1, isHighWaterLevel_~tmp~5#1, isHighWaterLevel_~tmp___0~0#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~4#1 := processEnvironment_#t~ret34#1;havoc processEnvironment_#t~ret34#1; 1863#L705 assume !(0 != processEnvironment_~tmp~4#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1952#processEnvironment__wrappee__base_returnLabel#1 assume { :end_inline_processEnvironment__wrappee__base } true; 1950#L701-1 havoc processEnvironment_#t~ret34#1, processEnvironment_~tmp~4#1;assume { :end_inline_processEnvironment } true; 1944#L676-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret49#1, __utac_acc__Specification2_spec__2_#t~ret50#1, __utac_acc__Specification2_spec__2_~tmp~7#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~7#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 1942#isMethaneLevelCritical_returnLabel#1 __utac_acc__Specification2_spec__2_#t~ret49#1 := isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~7#1 := __utac_acc__Specification2_spec__2_#t~ret49#1;havoc __utac_acc__Specification2_spec__2_#t~ret49#1; 1936#L932 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7#1);~methAndRunningLastTime~0 := 0; 1933#L932-1 havoc __utac_acc__Specification2_spec__2_#t~ret49#1, __utac_acc__Specification2_spec__2_#t~ret50#1, __utac_acc__Specification2_spec__2_~tmp~7#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :end_inline___utac_acc__Specification2_spec__2 } true; 1932#timeShift_returnLabel#1 assume { :end_inline_timeShift } true; 1865#L847-2 [2023-11-21 22:25:23,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:23,449 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 4 times [2023-11-21 22:25:23,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:23,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628964286] [2023-11-21 22:25:23,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:23,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:23,461 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:25:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:23,473 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:25:23,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:23,474 INFO L85 PathProgramCache]: Analyzing trace with hash -153017127, now seen corresponding path program 1 times [2023-11-21 22:25:23,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:23,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210929691] [2023-11-21 22:25:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:23,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:23,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:23,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:23,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210929691] [2023-11-21 22:25:23,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210929691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:23,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:23,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:25:23,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999062658] [2023-11-21 22:25:23,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:23,541 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 22:25:23,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:23,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:25:23,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:25:23,542 INFO L87 Difference]: Start difference. First operand 313 states and 408 transitions. cyclomatic complexity: 98 Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2023-11-21 22:25:23,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:23,704 INFO L93 Difference]: Finished difference Result 538 states and 697 transitions. [2023-11-21 22:25:23,704 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 538 states and 697 transitions. [2023-11-21 22:25:23,710 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 396 [2023-11-21 22:25:23,715 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 538 states to 538 states and 697 transitions. [2023-11-21 22:25:23,716 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 538 [2023-11-21 22:25:23,716 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 538 [2023-11-21 22:25:23,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 538 states and 697 transitions. [2023-11-21 22:25:23,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:23,718 INFO L218 hiAutomatonCegarLoop]: Abstraction has 538 states and 697 transitions. [2023-11-21 22:25:23,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states and 697 transitions. [2023-11-21 22:25:23,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 331. [2023-11-21 22:25:23,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 331 states have (on average 1.2870090634441087) internal successors, (426), 330 states have internal predecessors, (426), 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) [2023-11-21 22:25:23,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 426 transitions. [2023-11-21 22:25:23,742 INFO L240 hiAutomatonCegarLoop]: Abstraction has 331 states and 426 transitions. [2023-11-21 22:25:23,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:25:23,745 INFO L428 stractBuchiCegarLoop]: Abstraction has 331 states and 426 transitions. [2023-11-21 22:25:23,745 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-21 22:25:23,746 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 331 states and 426 transitions. [2023-11-21 22:25:23,749 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 239 [2023-11-21 22:25:23,749 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:25:23,750 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:25:23,751 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:23,751 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:23,752 INFO L748 eck$LassoCheckResult]: Stem: 2656#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 2657#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret33#1, main_~retValue_acc~8#1, main_~tmp~3#1;havoc main_~retValue_acc~8#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true; 2646#select_helpers_returnLabel#1 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2647#select_features_returnLabel#1 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~7#1;havoc valid_product_~retValue_acc~7#1;valid_product_~retValue_acc~7#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~7#1; 2723#valid_product_returnLabel#1 main_#t~ret33#1 := valid_product_#res#1;havoc valid_product_~retValue_acc~7#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret33#1;havoc main_#t~ret33#1; 2673#L642 assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 2674#setup_returnLabel#1 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification2_spec__1 } true;~methAndRunningLastTime~0 := 0; 2711#__utac_acc__Specification2_spec__1_returnLabel#1 assume { :end_inline___utac_acc__Specification2_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet45#1, test_#t~nondet46#1, test_#t~nondet47#1, test_#t~nondet48#1, test_~splverifierCounter~0#1, test_~tmp~6#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~6#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 2704#L847-2 [2023-11-21 22:25:23,752 INFO L750 eck$LassoCheckResult]: Loop: 2704#L847-2 assume !false; 2675#L848 assume test_~splverifierCounter~0#1 < 4; 2676#L849 havoc test_#t~nondet45#1;test_~tmp~6#1 := test_#t~nondet45#1;havoc test_#t~nondet45#1; 2803#L857 assume !(0 != test_~tmp~6#1); 2802#L857-2 havoc test_#t~nondet46#1;test_~tmp___0~1#1 := test_#t~nondet46#1;havoc test_#t~nondet46#1; 2870#L867 assume !(0 != test_~tmp___0~1#1); 2868#L867-2 havoc test_#t~nondet47#1;test_~tmp___2~0#1 := test_#t~nondet47#1;havoc test_#t~nondet47#1; 2867#L877 assume !(0 != test_~tmp___2~0#1);havoc test_#t~nondet48#1;test_~tmp___1~0#1 := test_#t~nondet48#1;havoc test_#t~nondet48#1; 2691#L885 assume !(0 != test_~tmp___1~0#1); 2681#L885-2 assume { :begin_inline_timeShift } true; 2682#L669 assume !(0 != ~pumpRunning~0); 2683#L669-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret34#1, processEnvironment_~tmp~4#1;havoc processEnvironment_~tmp~4#1; 2684#L701 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret44#1, isHighWaterLevel_~retValue_acc~11#1, isHighWaterLevel_~tmp~5#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~11#1;havoc isHighWaterLevel_~tmp~5#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 2746#L140 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 2780#isHighWaterSensorDry_returnLabel#1 isHighWaterLevel_#t~ret44#1 := isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~5#1 := isHighWaterLevel_#t~ret44#1;havoc isHighWaterLevel_#t~ret44#1; 2781#L803 assume 0 != isHighWaterLevel_~tmp~5#1;isHighWaterLevel_~tmp___0~0#1 := 0; 2773#L803-2 isHighWaterLevel_~retValue_acc~11#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~11#1; 2774#isHighWaterLevel_returnLabel#1 processEnvironment_#t~ret34#1 := isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret44#1, isHighWaterLevel_~retValue_acc~11#1, isHighWaterLevel_~tmp~5#1, isHighWaterLevel_~tmp___0~0#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~4#1 := processEnvironment_#t~ret34#1;havoc processEnvironment_#t~ret34#1; 2766#L705 assume !(0 != processEnvironment_~tmp~4#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 2629#processEnvironment__wrappee__base_returnLabel#1 assume { :end_inline_processEnvironment__wrappee__base } true; 2630#L701-1 havoc processEnvironment_#t~ret34#1, processEnvironment_~tmp~4#1;assume { :end_inline_processEnvironment } true; 2884#L676-1 assume { :begin_inline___utac_acc__Specification2_spec__2 } true;havoc __utac_acc__Specification2_spec__2_#t~ret49#1, __utac_acc__Specification2_spec__2_#t~ret50#1, __utac_acc__Specification2_spec__2_~tmp~7#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;havoc __utac_acc__Specification2_spec__2_~tmp~7#1;havoc __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;isMethaneLevelCritical_~retValue_acc~0#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~0#1; 2883#isMethaneLevelCritical_returnLabel#1 __utac_acc__Specification2_spec__2_#t~ret49#1 := isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~0#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification2_spec__2_~tmp~7#1 := __utac_acc__Specification2_spec__2_#t~ret49#1;havoc __utac_acc__Specification2_spec__2_#t~ret49#1; 2716#L932 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7#1);~methAndRunningLastTime~0 := 0; 2662#L932-1 havoc __utac_acc__Specification2_spec__2_#t~ret49#1, __utac_acc__Specification2_spec__2_#t~ret50#1, __utac_acc__Specification2_spec__2_~tmp~7#1, __utac_acc__Specification2_spec__2_~tmp___0~2#1;assume { :end_inline___utac_acc__Specification2_spec__2 } true; 2703#timeShift_returnLabel#1 assume { :end_inline_timeShift } true; 2704#L847-2 [2023-11-21 22:25:23,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:23,753 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 5 times [2023-11-21 22:25:23,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:23,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707087645] [2023-11-21 22:25:23,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:23,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:23,804 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:25:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:23,826 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:25:23,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:23,830 INFO L85 PathProgramCache]: Analyzing trace with hash -267275691, now seen corresponding path program 1 times [2023-11-21 22:25:23,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:23,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235792506] [2023-11-21 22:25:23,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:23,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:23,851 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:25:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:23,868 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:25:23,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:23,870 INFO L85 PathProgramCache]: Analyzing trace with hash 430969854, now seen corresponding path program 1 times [2023-11-21 22:25:23,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:23,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551653847] [2023-11-21 22:25:23,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:23,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:23,906 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:25:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:23,928 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:25:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:25,233 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:25:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:25,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 10:25:25 BoogieIcfgContainer [2023-11-21 22:25:25,289 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-21 22:25:25,289 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:25:25,289 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:25:25,290 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:25:25,290 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:25:22" (3/4) ... [2023-11-21 22:25:25,291 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-21 22:25:25,345 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9910c47-e768-46bd-aee6-18018237b0fd/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:25:25,346 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:25:25,346 INFO L158 Benchmark]: Toolchain (without parser) took 4550.91ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 99.9MB in the beginning and 75.2MB in the end (delta: 24.7MB). Peak memory consumption was 68.5MB. Max. memory is 16.1GB. [2023-11-21 22:25:25,347 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 134.2MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:25:25,347 INFO L158 Benchmark]: CACSL2BoogieTranslator took 550.56ms. Allocated memory is still 134.2MB. Free memory was 99.9MB in the beginning and 80.6MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 22:25:25,347 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.91ms. Allocated memory is still 134.2MB. Free memory was 80.6MB in the beginning and 77.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:25:25,348 INFO L158 Benchmark]: Boogie Preprocessor took 49.73ms. Allocated memory is still 134.2MB. Free memory was 77.7MB in the beginning and 75.2MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 22:25:25,348 INFO L158 Benchmark]: RCFGBuilder took 630.97ms. Allocated memory is still 134.2MB. Free memory was 75.2MB in the beginning and 56.8MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 22:25:25,349 INFO L158 Benchmark]: BuchiAutomizer took 3173.18ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 56.8MB in the beginning and 78.4MB in the end (delta: -21.6MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2023-11-21 22:25:25,349 INFO L158 Benchmark]: Witness Printer took 56.32ms. Allocated memory is still 176.2MB. Free memory was 78.4MB in the beginning and 75.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 22:25:25,351 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 134.2MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 550.56ms. Allocated memory is still 134.2MB. Free memory was 99.9MB in the beginning and 80.6MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.91ms. Allocated memory is still 134.2MB. Free memory was 80.6MB in the beginning and 77.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.73ms. Allocated memory is still 134.2MB. Free memory was 77.7MB in the beginning and 75.2MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 630.97ms. Allocated memory is still 134.2MB. Free memory was 75.2MB in the beginning and 56.8MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 3173.18ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 56.8MB in the beginning and 78.4MB in the end (delta: -21.6MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. * Witness Printer took 56.32ms. Allocated memory is still 176.2MB. Free memory was 78.4MB in the beginning and 75.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] - GenericResultAtLocation [Line: 150]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [150] - GenericResultAtLocation [Line: 516]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [516] - GenericResultAtLocation [Line: 554]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [554] - GenericResultAtLocation [Line: 655]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [655] - GenericResultAtLocation [Line: 836]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [836] - GenericResultAtLocation [Line: 905]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [905] - GenericResultAtLocation [Line: 914]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [914] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (4 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.4 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 331 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.0s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 2.2s. Construction of modules took 0.2s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 497 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 477 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 477 mSDsluCounter, 1808 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1065 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 134 IncrementalHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 743 mSDtfsCounter, 134 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 847]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L320] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int cleanupTimeShifts = 4; [L661] int pumpRunning = 0; [L662] int systemActive = 1; [L915] int methAndRunningLastTime ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L633] int retValue_acc ; [L634] int tmp ; [L638] FCALL select_helpers() [L639] FCALL select_features() [L640] CALL, EXPR valid_product() [L546] int retValue_acc ; [L549] retValue_acc = 1 [L550] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L640] RET, EXPR valid_product() [L640] tmp = valid_product() [L642] COND TRUE \read(tmp) [L644] FCALL setup() [L645] CALL runTest() [L626] CALL __utac_acc__Specification2_spec__1() [L920] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L626] RET __utac_acc__Specification2_spec__1() [L627] CALL test() [L838] int splverifierCounter ; [L839] int tmp ; [L840] int tmp___0 ; [L841] int tmp___1 ; [L842] int tmp___2 ; [L845] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] Loop: [L847] COND TRUE 1 [L849] COND TRUE splverifierCounter < 4 [L855] tmp = __VERIFIER_nondet_int() [L857] COND FALSE !(\read(tmp)) [L865] tmp___0 = __VERIFIER_nondet_int() [L867] COND FALSE !(\read(tmp___0)) [L875] tmp___2 = __VERIFIER_nondet_int() [L877] COND FALSE !(\read(tmp___2)) [L883] tmp___1 = __VERIFIER_nondet_int() [L885] COND FALSE !(\read(tmp___1)) [L894] CALL timeShift() [L669] COND FALSE !(\read(pumpRunning)) [L676] COND TRUE \read(systemActive) [L678] CALL processEnvironment() [L698] int tmp ; [L701] COND TRUE ! pumpRunning [L703] CALL, EXPR isHighWaterLevel() [L795] int retValue_acc ; [L796] int tmp ; [L797] int tmp___0 ; [L801] CALL, EXPR isHighWaterSensorDry() [L137] int retValue_acc ; [L140] COND TRUE waterLevel < 2 [L141] retValue_acc = 1 [L142] return (retValue_acc); [L801] RET, EXPR isHighWaterSensorDry() [L801] tmp = isHighWaterSensorDry() [L803] COND TRUE \read(tmp) [L804] tmp___0 = 0 [L808] retValue_acc = tmp___0 [L809] return (retValue_acc); [L703] RET, EXPR isHighWaterLevel() [L703] tmp = isHighWaterLevel() [L705] COND FALSE !(\read(tmp)) [L711] FCALL processEnvironment__wrappee__base() [L678] RET processEnvironment() [L684] CALL __utac_acc__Specification2_spec__2() [L925] int tmp ; [L926] int tmp___0 ; [L930] CALL, EXPR isMethaneLevelCritical() [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); [L930] RET, EXPR isMethaneLevelCritical() [L930] tmp = isMethaneLevelCritical() [L932] COND FALSE !(\read(tmp)) [L948] methAndRunningLastTime = 0 [L684] RET __utac_acc__Specification2_spec__2() [L894] RET timeShift() End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 847]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L320] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int cleanupTimeShifts = 4; [L661] int pumpRunning = 0; [L662] int systemActive = 1; [L915] int methAndRunningLastTime ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L633] int retValue_acc ; [L634] int tmp ; [L638] FCALL select_helpers() [L639] FCALL select_features() [L640] CALL, EXPR valid_product() [L546] int retValue_acc ; [L549] retValue_acc = 1 [L550] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L640] RET, EXPR valid_product() [L640] tmp = valid_product() [L642] COND TRUE \read(tmp) [L644] FCALL setup() [L645] CALL runTest() [L626] CALL __utac_acc__Specification2_spec__1() [L920] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L626] RET __utac_acc__Specification2_spec__1() [L627] CALL test() [L838] int splverifierCounter ; [L839] int tmp ; [L840] int tmp___0 ; [L841] int tmp___1 ; [L842] int tmp___2 ; [L845] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] Loop: [L847] COND TRUE 1 [L849] COND TRUE splverifierCounter < 4 [L855] tmp = __VERIFIER_nondet_int() [L857] COND FALSE !(\read(tmp)) [L865] tmp___0 = __VERIFIER_nondet_int() [L867] COND FALSE !(\read(tmp___0)) [L875] tmp___2 = __VERIFIER_nondet_int() [L877] COND FALSE !(\read(tmp___2)) [L883] tmp___1 = __VERIFIER_nondet_int() [L885] COND FALSE !(\read(tmp___1)) [L894] CALL timeShift() [L669] COND FALSE !(\read(pumpRunning)) [L676] COND TRUE \read(systemActive) [L678] CALL processEnvironment() [L698] int tmp ; [L701] COND TRUE ! pumpRunning [L703] CALL, EXPR isHighWaterLevel() [L795] int retValue_acc ; [L796] int tmp ; [L797] int tmp___0 ; [L801] CALL, EXPR isHighWaterSensorDry() [L137] int retValue_acc ; [L140] COND TRUE waterLevel < 2 [L141] retValue_acc = 1 [L142] return (retValue_acc); [L801] RET, EXPR isHighWaterSensorDry() [L801] tmp = isHighWaterSensorDry() [L803] COND TRUE \read(tmp) [L804] tmp___0 = 0 [L808] retValue_acc = tmp___0 [L809] return (retValue_acc); [L703] RET, EXPR isHighWaterLevel() [L703] tmp = isHighWaterLevel() [L705] COND FALSE !(\read(tmp)) [L711] FCALL processEnvironment__wrappee__base() [L678] RET processEnvironment() [L684] CALL __utac_acc__Specification2_spec__2() [L925] int tmp ; [L926] int tmp___0 ; [L930] CALL, EXPR isMethaneLevelCritical() [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); [L930] RET, EXPR isMethaneLevelCritical() [L930] tmp = isMethaneLevelCritical() [L932] COND FALSE !(\read(tmp)) [L948] methAndRunningLastTime = 0 [L684] RET __utac_acc__Specification2_spec__2() [L894] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-21 22:25:25,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9910c47-e768-46bd-aee6-18018237b0fd/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)