./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product57.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cf1a7837 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_ac05227f-dc5a-49e8-9f3b-02b96aa62043/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac05227f-dc5a-49e8-9f3b-02b96aa62043/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac05227f-dc5a-49e8-9f3b-02b96aa62043/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac05227f-dc5a-49e8-9f3b-02b96aa62043/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product57.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac05227f-dc5a-49e8-9f3b-02b96aa62043/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac05227f-dc5a-49e8-9f3b-02b96aa62043/bin/uautomizer-verify-uTZkv6EMXl --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 d0f26fc8ab0bdaf05de905c05e583bc491c727ef99c3d3df87bba160b541b55a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:28:25,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:28:25,585 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac05227f-dc5a-49e8-9f3b-02b96aa62043/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-12 02:28:25,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:28:25,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:28:25,636 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:28:25,641 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:28:25,642 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:28:25,643 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:28:25,650 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:28:25,652 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:28:25,653 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-12 02:28:25,653 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-12 02:28:25,655 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-12 02:28:25,656 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-12 02:28:25,656 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-12 02:28:25,657 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-12 02:28:25,658 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:28:25,658 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-12 02:28:25,659 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:28:25,659 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:28:25,660 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:28:25,660 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:28:25,661 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-12 02:28:25,661 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-12 02:28:25,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-12 02:28:25,662 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:28:25,663 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:28:25,663 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:28:25,664 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-12 02:28:25,665 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:28:25,665 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:28:25,666 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:28:25,666 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:28:25,666 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:28:25,667 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-12 02:28:25,667 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_ac05227f-dc5a-49e8-9f3b-02b96aa62043/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac05227f-dc5a-49e8-9f3b-02b96aa62043/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0f26fc8ab0bdaf05de905c05e583bc491c727ef99c3d3df87bba160b541b55a [2023-11-12 02:28:25,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:28:25,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:28:25,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:28:25,985 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:28:25,986 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:28:25,987 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac05227f-dc5a-49e8-9f3b-02b96aa62043/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/product-lines/minepump_spec1_product57.cil.c [2023-11-12 02:28:29,307 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:28:29,612 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:28:29,613 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac05227f-dc5a-49e8-9f3b-02b96aa62043/sv-benchmarks/c/product-lines/minepump_spec1_product57.cil.c [2023-11-12 02:28:29,628 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac05227f-dc5a-49e8-9f3b-02b96aa62043/bin/uautomizer-verify-uTZkv6EMXl/data/51c5f21f2/d308f59ca8404062945172904ba273d4/FLAGa9d4c7cbe [2023-11-12 02:28:29,642 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac05227f-dc5a-49e8-9f3b-02b96aa62043/bin/uautomizer-verify-uTZkv6EMXl/data/51c5f21f2/d308f59ca8404062945172904ba273d4 [2023-11-12 02:28:29,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:28:29,646 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:28:29,648 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:28:29,648 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:28:29,653 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:28:29,654 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:28:29" (1/1) ... [2023-11-12 02:28:29,655 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57c84c21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:29, skipping insertion in model container [2023-11-12 02:28:29,656 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:28:29" (1/1) ... [2023-11-12 02:28:29,738 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:28:30,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:28:30,061 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:28:30,073 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [49] [2023-11-12 02:28:30,075 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [78] [2023-11-12 02:28:30,075 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [116] [2023-11-12 02:28:30,075 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [482] [2023-11-12 02:28:30,076 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [551] [2023-11-12 02:28:30,076 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [773] [2023-11-12 02:28:30,076 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [869] [2023-11-12 02:28:30,077 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [973] [2023-11-12 02:28:30,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:28:30,199 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:28:30,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:30 WrapperNode [2023-11-12 02:28:30,200 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:28:30,201 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:28:30,202 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:28:30,202 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:28:30,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:30" (1/1) ... [2023-11-12 02:28:30,227 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:30" (1/1) ... [2023-11-12 02:28:30,277 INFO L138 Inliner]: procedures = 56, calls = 101, calls flagged for inlining = 54, calls inlined = 98, statements flattened = 675 [2023-11-12 02:28:30,277 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:28:30,278 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:28:30,279 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:28:30,279 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:28:30,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:30" (1/1) ... [2023-11-12 02:28:30,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:30" (1/1) ... [2023-11-12 02:28:30,294 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:30" (1/1) ... [2023-11-12 02:28:30,295 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:30" (1/1) ... [2023-11-12 02:28:30,308 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:30" (1/1) ... [2023-11-12 02:28:30,316 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:30" (1/1) ... [2023-11-12 02:28:30,320 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:30" (1/1) ... [2023-11-12 02:28:30,323 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:30" (1/1) ... [2023-11-12 02:28:30,329 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:28:30,330 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:28:30,330 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:28:30,330 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:28:30,331 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:30" (1/1) ... [2023-11-12 02:28:30,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:28:30,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac05227f-dc5a-49e8-9f3b-02b96aa62043/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:30,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac05227f-dc5a-49e8-9f3b-02b96aa62043/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:28:30,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac05227f-dc5a-49e8-9f3b-02b96aa62043/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-12 02:28:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:28:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:28:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:28:30,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:28:30,487 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:28:30,489 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:28:31,152 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:28:31,162 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:28:31,163 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:28:31,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:28:31 BoogieIcfgContainer [2023-11-12 02:28:31,166 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:28:31,167 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-12 02:28:31,167 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-12 02:28:31,174 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-12 02:28:31,175 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:28:31,176 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.11 02:28:29" (1/3) ... [2023-11-12 02:28:31,176 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@537605d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 02:28:31, skipping insertion in model container [2023-11-12 02:28:31,177 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:28:31,177 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:30" (2/3) ... [2023-11-12 02:28:31,177 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@537605d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 02:28:31, skipping insertion in model container [2023-11-12 02:28:31,178 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:28:31,178 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:28:31" (3/3) ... [2023-11-12 02:28:31,180 INFO L332 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product57.cil.c [2023-11-12 02:28:31,247 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-12 02:28:31,248 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-12 02:28:31,248 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-12 02:28:31,248 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-12 02:28:31,248 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-12 02:28:31,249 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-12 02:28:31,267 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-12 02:28:31,267 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-12 02:28:31,273 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 189 states, 188 states have (on average 1.3563829787234043) 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) [2023-11-12 02:28:31,307 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 122 [2023-11-12 02:28:31,308 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:28:31,308 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:28:31,315 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:31,316 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:31,316 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-12 02:28:31,317 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 189 states, 188 states have (on average 1.3563829787234043) 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) [2023-11-12 02:28:31,329 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 122 [2023-11-12 02:28:31,329 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:28:31,329 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:28:31,330 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:31,331 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:31,337 INFO L748 eck$LassoCheckResult]: Stem: 34#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(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);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 49#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret48#1, main_~retValue_acc~9#1, main_~tmp~10#1;havoc main_~retValue_acc~9#1;havoc main_~tmp~10#1;assume { :begin_inline_select_helpers } true; 26#select_helpers_returnLabel#1true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 149#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~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 132#valid_product_returnLabel#1true main_#t~ret48#1 := valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;assume { :end_inline_valid_product } true;main_~tmp~10#1 := main_#t~ret48#1;havoc main_#t~ret48#1; 184#L856true assume 0 != main_~tmp~10#1;assume { :begin_inline_setup } true; 102#setup_returnLabel#1true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet30#1, test_#t~nondet31#1, test_#t~nondet32#1, test_#t~nondet33#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 35#L497-2true [2023-11-12 02:28:31,338 INFO L750 eck$LassoCheckResult]: Loop: 35#L497-2true assume !false; 127#L498true assume test_~splverifierCounter~0#1 < 4; 57#L499true havoc test_#t~nondet30#1;test_~tmp~4#1 := test_#t~nondet30#1;havoc test_#t~nondet30#1; 24#L507true assume !(0 != test_~tmp~4#1); 32#L507-2true havoc test_#t~nondet31#1;test_~tmp___0~1#1 := test_#t~nondet31#1;havoc test_#t~nondet31#1; 125#L517true assume !(0 != test_~tmp___0~1#1); 52#L517-2true havoc test_#t~nondet32#1;test_~tmp___2~0#1 := test_#t~nondet32#1;havoc test_#t~nondet32#1; 137#L527true assume 0 != test_~tmp___2~0#1; 21#L533-2true assume { :begin_inline_timeShift } true; 155#L566true assume !(0 != ~pumpRunning~0); 66#L566-2true assume !(0 != ~systemActive~0); 80#L573-1true assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret4#1, __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification1_spec__1_~tmp~0#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; 107#isMethaneLevelCritical_returnLabel#3true __utac_acc__Specification1_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~0#1 := __utac_acc__Specification1_spec__1_#t~ret4#1;havoc __utac_acc__Specification1_spec__1_#t~ret4#1; 105#L61true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0#1); 159#L61-1true havoc __utac_acc__Specification1_spec__1_#t~ret4#1, __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :end_inline___utac_acc__Specification1_spec__1 } true; 90#timeShift_returnLabel#1true assume { :end_inline_timeShift } true; 35#L497-2true [2023-11-12 02:28:31,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:31,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 1 times [2023-11-12 02:28:31,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:31,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135862543] [2023-11-12 02:28:31,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:31,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:28:31,455 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:28:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:28:31,494 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:28:31,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:31,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1892793766, now seen corresponding path program 1 times [2023-11-12 02:28:31,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:31,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61642579] [2023-11-12 02:28:31,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:31,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:28:31,509 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:28:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:28:31,520 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:28:31,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:31,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1046754454, now seen corresponding path program 1 times [2023-11-12 02:28:31,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:31,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788019937] [2023-11-12 02:28:31,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:31,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:31,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:31,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788019937] [2023-11-12 02:28:31,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788019937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:31,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:31,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:28:31,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609538288] [2023-11-12 02:28:31,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:31,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:32,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:28:32,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:28:32,019 INFO L87 Difference]: Start difference. First operand has 189 states, 188 states have (on average 1.3563829787234043) 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) Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 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) [2023-11-12 02:28:32,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:32,105 INFO L93 Difference]: Finished difference Result 183 states and 238 transitions. [2023-11-12 02:28:32,106 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 238 transitions. [2023-11-12 02:28:32,112 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 116 [2023-11-12 02:28:32,119 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 173 states and 228 transitions. [2023-11-12 02:28:32,121 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 173 [2023-11-12 02:28:32,122 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 173 [2023-11-12 02:28:32,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 173 states and 228 transitions. [2023-11-12 02:28:32,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:32,125 INFO L218 hiAutomatonCegarLoop]: Abstraction has 173 states and 228 transitions. [2023-11-12 02:28:32,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states and 228 transitions. [2023-11-12 02:28:32,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2023-11-12 02:28:32,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 173 states have (on average 1.3179190751445087) internal successors, (228), 172 states have internal predecessors, (228), 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) [2023-11-12 02:28:32,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 228 transitions. [2023-11-12 02:28:32,166 INFO L240 hiAutomatonCegarLoop]: Abstraction has 173 states and 228 transitions. [2023-11-12 02:28:32,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:28:32,172 INFO L428 stractBuchiCegarLoop]: Abstraction has 173 states and 228 transitions. [2023-11-12 02:28:32,172 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-12 02:28:32,172 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 173 states and 228 transitions. [2023-11-12 02:28:32,175 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 116 [2023-11-12 02:28:32,176 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:28:32,176 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:28:32,177 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:32,177 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] [2023-11-12 02:28:32,177 INFO L748 eck$LassoCheckResult]: Stem: 438#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(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);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 439#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret48#1, main_~retValue_acc~9#1, main_~tmp~10#1;havoc main_~retValue_acc~9#1;havoc main_~tmp~10#1;assume { :begin_inline_select_helpers } true; 427#select_helpers_returnLabel#1 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 428#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~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 545#valid_product_returnLabel#1 main_#t~ret48#1 := valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;assume { :end_inline_valid_product } true;main_~tmp~10#1 := main_#t~ret48#1;havoc main_#t~ret48#1; 546#L856 assume 0 != main_~tmp~10#1;assume { :begin_inline_setup } true; 524#setup_returnLabel#1 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet30#1, test_#t~nondet31#1, test_#t~nondet32#1, test_#t~nondet33#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 440#L497-2 [2023-11-12 02:28:32,178 INFO L750 eck$LassoCheckResult]: Loop: 440#L497-2 assume !false; 441#L498 assume test_~splverifierCounter~0#1 < 4; 473#L499 havoc test_#t~nondet30#1;test_~tmp~4#1 := test_#t~nondet30#1;havoc test_#t~nondet30#1; 425#L507 assume !(0 != test_~tmp~4#1); 426#L507-2 havoc test_#t~nondet31#1;test_~tmp___0~1#1 := test_#t~nondet31#1;havoc test_#t~nondet31#1; 436#L517 assume !(0 != test_~tmp___0~1#1); 467#L517-2 havoc test_#t~nondet32#1;test_~tmp___2~0#1 := test_#t~nondet32#1;havoc test_#t~nondet32#1; 468#L527 assume 0 != test_~tmp___2~0#1; 419#L533-2 assume { :begin_inline_timeShift } true; 420#L566 assume !(0 != ~pumpRunning~0); 489#L566-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret35#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 469#L624 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret34#1, processEnvironment__wrappee__highWaterSensor_~tmp~5#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5#1; 470#L598-2 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 390#processEnvironment__wrappee__base_returnLabel#4 assume { :end_inline_processEnvironment__wrappee__base } true; 391#L598-3 havoc processEnvironment__wrappee__highWaterSensor_#t~ret34#1, processEnvironment__wrappee__highWaterSensor_~tmp~5#1;assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 537#L624-1 havoc processEnvironment_#t~ret35#1, processEnvironment_~tmp~6#1;assume { :end_inline_processEnvironment } true; 505#L573-1 assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret4#1, __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification1_spec__1_~tmp~0#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; 506#isMethaneLevelCritical_returnLabel#3 __utac_acc__Specification1_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~0#1 := __utac_acc__Specification1_spec__1_#t~ret4#1;havoc __utac_acc__Specification1_spec__1_#t~ret4#1; 526#L61 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0#1); 528#L61-1 havoc __utac_acc__Specification1_spec__1_#t~ret4#1, __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :end_inline___utac_acc__Specification1_spec__1 } true; 516#timeShift_returnLabel#1 assume { :end_inline_timeShift } true; 440#L497-2 [2023-11-12 02:28:32,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:32,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 2 times [2023-11-12 02:28:32,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:32,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014224372] [2023-11-12 02:28:32,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:32,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:28:32,190 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:28:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:28:32,202 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:28:32,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:32,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1698449135, now seen corresponding path program 1 times [2023-11-12 02:28:32,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:32,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888585958] [2023-11-12 02:28:32,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:32,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:32,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:32,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888585958] [2023-11-12 02:28:32,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888585958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:32,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:32,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:28:32,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811501344] [2023-11-12 02:28:32,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:32,231 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-12 02:28:32,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:32,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:28:32,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:32,233 INFO L87 Difference]: Start difference. First operand 173 states and 228 transitions. cyclomatic complexity: 57 Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:32,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:32,340 INFO L93 Difference]: Finished difference Result 234 states and 296 transitions. [2023-11-12 02:28:32,341 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 234 states and 296 transitions. [2023-11-12 02:28:32,355 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 162 [2023-11-12 02:28:32,359 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 234 states to 234 states and 296 transitions. [2023-11-12 02:28:32,363 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 234 [2023-11-12 02:28:32,365 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 234 [2023-11-12 02:28:32,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 234 states and 296 transitions. [2023-11-12 02:28:32,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:32,371 INFO L218 hiAutomatonCegarLoop]: Abstraction has 234 states and 296 transitions. [2023-11-12 02:28:32,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states and 296 transitions. [2023-11-12 02:28:32,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2023-11-12 02:28:32,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 234 states have (on average 1.264957264957265) internal successors, (296), 233 states have internal predecessors, (296), 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) [2023-11-12 02:28:32,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 296 transitions. [2023-11-12 02:28:32,399 INFO L240 hiAutomatonCegarLoop]: Abstraction has 234 states and 296 transitions. [2023-11-12 02:28:32,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:28:32,402 INFO L428 stractBuchiCegarLoop]: Abstraction has 234 states and 296 transitions. [2023-11-12 02:28:32,405 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-12 02:28:32,406 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 234 states and 296 transitions. [2023-11-12 02:28:32,408 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 162 [2023-11-12 02:28:32,411 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:28:32,411 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:28:32,412 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:32,413 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, 1] [2023-11-12 02:28:32,413 INFO L748 eck$LassoCheckResult]: Stem: 849#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(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);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 850#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret48#1, main_~retValue_acc~9#1, main_~tmp~10#1;havoc main_~retValue_acc~9#1;havoc main_~tmp~10#1;assume { :begin_inline_select_helpers } true; 838#select_helpers_returnLabel#1 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 839#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~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 963#valid_product_returnLabel#1 main_#t~ret48#1 := valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;assume { :end_inline_valid_product } true;main_~tmp~10#1 := main_#t~ret48#1;havoc main_#t~ret48#1; 964#L856 assume 0 != main_~tmp~10#1;assume { :begin_inline_setup } true; 938#setup_returnLabel#1 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet30#1, test_#t~nondet31#1, test_#t~nondet32#1, test_#t~nondet33#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 851#L497-2 [2023-11-12 02:28:32,414 INFO L750 eck$LassoCheckResult]: Loop: 851#L497-2 assume !false; 852#L498 assume test_~splverifierCounter~0#1 < 4; 884#L499 havoc test_#t~nondet30#1;test_~tmp~4#1 := test_#t~nondet30#1;havoc test_#t~nondet30#1; 836#L507 assume !(0 != test_~tmp~4#1); 837#L507-2 havoc test_#t~nondet31#1;test_~tmp___0~1#1 := test_#t~nondet31#1;havoc test_#t~nondet31#1; 847#L517 assume !(0 != test_~tmp___0~1#1); 879#L517-2 havoc test_#t~nondet32#1;test_~tmp___2~0#1 := test_#t~nondet32#1;havoc test_#t~nondet32#1; 880#L527 assume 0 != test_~tmp___2~0#1; 830#L533-2 assume { :begin_inline_timeShift } true; 831#L566 assume !(0 != ~pumpRunning~0); 897#L566-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret35#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 881#L624 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret34#1, processEnvironment__wrappee__highWaterSensor_~tmp~5#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5#1; 882#L598-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret46#1, isHighWaterLevel_~retValue_acc~7#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~2#1;havoc isHighWaterLevel_~retValue_acc~7#1;havoc isHighWaterLevel_~tmp~8#1;havoc isHighWaterLevel_~tmp___0~2#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~12#1;havoc isHighWaterSensorDry_~retValue_acc~12#1; 928#L954-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~12#1; 873#isHighWaterSensorDry_returnLabel#2 isHighWaterLevel_#t~ret46#1 := isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~12#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret46#1;havoc isHighWaterLevel_#t~ret46#1; 813#L744-3 assume !(0 != isHighWaterLevel_~tmp~8#1);isHighWaterLevel_~tmp___0~2#1 := 1; 814#L744-5 isHighWaterLevel_~retValue_acc~7#1 := isHighWaterLevel_~tmp___0~2#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~7#1; 974#isHighWaterLevel_returnLabel#2 processEnvironment__wrappee__highWaterSensor_#t~ret34#1 := isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret46#1, isHighWaterLevel_~retValue_acc~7#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~2#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~5#1 := processEnvironment__wrappee__highWaterSensor_#t~ret34#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret34#1; 863#L602-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 865#processEnvironment__wrappee__base_returnLabel#3 assume { :end_inline_processEnvironment__wrappee__base } true; 866#L598-3 havoc processEnvironment__wrappee__highWaterSensor_#t~ret34#1, processEnvironment__wrappee__highWaterSensor_~tmp~5#1;assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 955#L624-1 havoc processEnvironment_#t~ret35#1, processEnvironment_~tmp~6#1;assume { :end_inline_processEnvironment } true; 918#L573-1 assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret4#1, __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification1_spec__1_~tmp~0#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; 919#isMethaneLevelCritical_returnLabel#3 __utac_acc__Specification1_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~0#1 := __utac_acc__Specification1_spec__1_#t~ret4#1;havoc __utac_acc__Specification1_spec__1_#t~ret4#1; 941#L61 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0#1); 943#L61-1 havoc __utac_acc__Specification1_spec__1_#t~ret4#1, __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :end_inline___utac_acc__Specification1_spec__1 } true; 929#timeShift_returnLabel#1 assume { :end_inline_timeShift } true; 851#L497-2 [2023-11-12 02:28:32,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:32,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 3 times [2023-11-12 02:28:32,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:32,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553404385] [2023-11-12 02:28:32,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:32,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:28:32,427 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:28:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:28:32,438 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:28:32,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:32,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1557200697, now seen corresponding path program 1 times [2023-11-12 02:28:32,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:32,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325694690] [2023-11-12 02:28:32,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:32,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:32,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:32,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:32,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325694690] [2023-11-12 02:28:32,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325694690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:32,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:32,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:28:32,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244370816] [2023-11-12 02:28:32,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:32,522 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-12 02:28:32,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:32,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:28:32,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:28:32,524 INFO L87 Difference]: Start difference. First operand 234 states and 296 transitions. cyclomatic complexity: 64 Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:32,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:32,645 INFO L93 Difference]: Finished difference Result 455 states and 567 transitions. [2023-11-12 02:28:32,645 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 455 states and 567 transitions. [2023-11-12 02:28:32,650 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 320 [2023-11-12 02:28:32,655 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 455 states to 455 states and 567 transitions. [2023-11-12 02:28:32,656 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 455 [2023-11-12 02:28:32,656 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 455 [2023-11-12 02:28:32,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 455 states and 567 transitions. [2023-11-12 02:28:32,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:32,659 INFO L218 hiAutomatonCegarLoop]: Abstraction has 455 states and 567 transitions. [2023-11-12 02:28:32,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states and 567 transitions. [2023-11-12 02:28:32,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 246. [2023-11-12 02:28:32,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 246 states have (on average 1.2520325203252032) internal successors, (308), 245 states have internal predecessors, (308), 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) [2023-11-12 02:28:32,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 308 transitions. [2023-11-12 02:28:32,677 INFO L240 hiAutomatonCegarLoop]: Abstraction has 246 states and 308 transitions. [2023-11-12 02:28:32,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:28:32,678 INFO L428 stractBuchiCegarLoop]: Abstraction has 246 states and 308 transitions. [2023-11-12 02:28:32,678 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-12 02:28:32,679 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 246 states and 308 transitions. [2023-11-12 02:28:32,681 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 170 [2023-11-12 02:28:32,681 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:28:32,681 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:28:32,682 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:32,682 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, 1] [2023-11-12 02:28:32,682 INFO L748 eck$LassoCheckResult]: Stem: 1547#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(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);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1548#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret48#1, main_~retValue_acc~9#1, main_~tmp~10#1;havoc main_~retValue_acc~9#1;havoc main_~tmp~10#1;assume { :begin_inline_select_helpers } true; 1536#select_helpers_returnLabel#1 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1537#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~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 1665#valid_product_returnLabel#1 main_#t~ret48#1 := valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;assume { :end_inline_valid_product } true;main_~tmp~10#1 := main_#t~ret48#1;havoc main_#t~ret48#1; 1666#L856 assume 0 != main_~tmp~10#1;assume { :begin_inline_setup } true; 1638#setup_returnLabel#1 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet30#1, test_#t~nondet31#1, test_#t~nondet32#1, test_#t~nondet33#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1549#L497-2 [2023-11-12 02:28:32,682 INFO L750 eck$LassoCheckResult]: Loop: 1549#L497-2 assume !false; 1550#L498 assume test_~splverifierCounter~0#1 < 4; 1582#L499 havoc test_#t~nondet30#1;test_~tmp~4#1 := test_#t~nondet30#1;havoc test_#t~nondet30#1; 1534#L507 assume !(0 != test_~tmp~4#1); 1535#L507-2 havoc test_#t~nondet31#1;test_~tmp___0~1#1 := test_#t~nondet31#1;havoc test_#t~nondet31#1; 1545#L517 assume !(0 != test_~tmp___0~1#1); 1577#L517-2 havoc test_#t~nondet32#1;test_~tmp___2~0#1 := test_#t~nondet32#1;havoc test_#t~nondet32#1; 1578#L527 assume 0 != test_~tmp___2~0#1; 1528#L533-2 assume { :begin_inline_timeShift } true; 1529#L566 assume !(0 != ~pumpRunning~0); 1595#L566-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret35#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 1579#L624 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret34#1, processEnvironment__wrappee__highWaterSensor_~tmp~5#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5#1; 1580#L598-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret46#1, isHighWaterLevel_~retValue_acc~7#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~2#1;havoc isHighWaterLevel_~retValue_acc~7#1;havoc isHighWaterLevel_~tmp~8#1;havoc isHighWaterLevel_~tmp___0~2#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~12#1;havoc isHighWaterSensorDry_~retValue_acc~12#1; 1627#L954-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~12#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~12#1; 1632#isHighWaterSensorDry_returnLabel#2 isHighWaterLevel_#t~ret46#1 := isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~12#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret46#1;havoc isHighWaterLevel_#t~ret46#1; 1718#L744-3 assume !(0 != isHighWaterLevel_~tmp~8#1);isHighWaterLevel_~tmp___0~2#1 := 1; 1512#L744-5 isHighWaterLevel_~retValue_acc~7#1 := isHighWaterLevel_~tmp___0~2#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~7#1; 1677#isHighWaterLevel_returnLabel#2 processEnvironment__wrappee__highWaterSensor_#t~ret34#1 := isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret46#1, isHighWaterLevel_~retValue_acc~7#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~2#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~5#1 := processEnvironment__wrappee__highWaterSensor_#t~ret34#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret34#1; 1561#L602-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1563#processEnvironment__wrappee__base_returnLabel#3 assume { :end_inline_processEnvironment__wrappee__base } true; 1564#L598-3 havoc processEnvironment__wrappee__highWaterSensor_#t~ret34#1, processEnvironment__wrappee__highWaterSensor_~tmp~5#1;assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 1656#L624-1 havoc processEnvironment_#t~ret35#1, processEnvironment_~tmp~6#1;assume { :end_inline_processEnvironment } true; 1616#L573-1 assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret4#1, __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification1_spec__1_~tmp~0#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; 1617#isMethaneLevelCritical_returnLabel#3 __utac_acc__Specification1_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~0#1 := __utac_acc__Specification1_spec__1_#t~ret4#1;havoc __utac_acc__Specification1_spec__1_#t~ret4#1; 1641#L61 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0#1); 1643#L61-1 havoc __utac_acc__Specification1_spec__1_#t~ret4#1, __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :end_inline___utac_acc__Specification1_spec__1 } true; 1628#timeShift_returnLabel#1 assume { :end_inline_timeShift } true; 1549#L497-2 [2023-11-12 02:28:32,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:32,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 4 times [2023-11-12 02:28:32,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:32,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62302170] [2023-11-12 02:28:32,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:32,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:28:32,693 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:28:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:28:32,702 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:28:32,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:32,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1726649349, now seen corresponding path program 1 times [2023-11-12 02:28:32,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:32,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914172261] [2023-11-12 02:28:32,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:32,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:32,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:32,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:32,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914172261] [2023-11-12 02:28:32,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914172261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:32,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:32,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:28:32,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641033284] [2023-11-12 02:28:32,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:32,773 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-12 02:28:32,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:32,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:28:32,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:28:32,774 INFO L87 Difference]: Start difference. First operand 246 states and 308 transitions. cyclomatic complexity: 64 Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:32,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:32,956 INFO L93 Difference]: Finished difference Result 461 states and 567 transitions. [2023-11-12 02:28:32,957 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 461 states and 567 transitions. [2023-11-12 02:28:32,962 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 324 [2023-11-12 02:28:32,968 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 461 states to 461 states and 567 transitions. [2023-11-12 02:28:32,968 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 461 [2023-11-12 02:28:32,969 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 461 [2023-11-12 02:28:32,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 461 states and 567 transitions. [2023-11-12 02:28:32,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:32,971 INFO L218 hiAutomatonCegarLoop]: Abstraction has 461 states and 567 transitions. [2023-11-12 02:28:32,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states and 567 transitions. [2023-11-12 02:28:32,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 264. [2023-11-12 02:28:33,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 264 states have (on average 1.2348484848484849) internal successors, (326), 263 states have internal predecessors, (326), 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) [2023-11-12 02:28:33,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 326 transitions. [2023-11-12 02:28:33,004 INFO L240 hiAutomatonCegarLoop]: Abstraction has 264 states and 326 transitions. [2023-11-12 02:28:33,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:28:33,007 INFO L428 stractBuchiCegarLoop]: Abstraction has 264 states and 326 transitions. [2023-11-12 02:28:33,007 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-12 02:28:33,007 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 264 states and 326 transitions. [2023-11-12 02:28:33,030 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 182 [2023-11-12 02:28:33,032 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:28:33,033 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:28:33,035 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:33,036 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, 1] [2023-11-12 02:28:33,037 INFO L748 eck$LassoCheckResult]: Stem: 2266#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(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);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 2267#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret48#1, main_~retValue_acc~9#1, main_~tmp~10#1;havoc main_~retValue_acc~9#1;havoc main_~tmp~10#1;assume { :begin_inline_select_helpers } true; 2255#select_helpers_returnLabel#1 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2256#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~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 2387#valid_product_returnLabel#1 main_#t~ret48#1 := valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;assume { :end_inline_valid_product } true;main_~tmp~10#1 := main_#t~ret48#1;havoc main_#t~ret48#1; 2388#L856 assume 0 != main_~tmp~10#1;assume { :begin_inline_setup } true; 2359#setup_returnLabel#1 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet30#1, test_#t~nondet31#1, test_#t~nondet32#1, test_#t~nondet33#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 2268#L497-2 [2023-11-12 02:28:33,040 INFO L750 eck$LassoCheckResult]: Loop: 2268#L497-2 assume !false; 2269#L498 assume test_~splverifierCounter~0#1 < 4; 2302#L499 havoc test_#t~nondet30#1;test_~tmp~4#1 := test_#t~nondet30#1;havoc test_#t~nondet30#1; 2253#L507 assume !(0 != test_~tmp~4#1); 2254#L507-2 havoc test_#t~nondet31#1;test_~tmp___0~1#1 := test_#t~nondet31#1;havoc test_#t~nondet31#1; 2263#L517 assume !(0 != test_~tmp___0~1#1); 2297#L517-2 havoc test_#t~nondet32#1;test_~tmp___2~0#1 := test_#t~nondet32#1;havoc test_#t~nondet32#1; 2298#L527 assume 0 != test_~tmp___2~0#1; 2247#L533-2 assume { :begin_inline_timeShift } true; 2248#L566 assume !(0 != ~pumpRunning~0); 2315#L566-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret35#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 2299#L624 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret34#1, processEnvironment__wrappee__highWaterSensor_~tmp~5#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5#1; 2300#L598-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret46#1, isHighWaterLevel_~retValue_acc~7#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~2#1;havoc isHighWaterLevel_~retValue_acc~7#1;havoc isHighWaterLevel_~tmp~8#1;havoc isHighWaterLevel_~tmp___0~2#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~12#1;havoc isHighWaterSensorDry_~retValue_acc~12#1; 2348#L954-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~12#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~12#1; 2353#isHighWaterSensorDry_returnLabel#2 isHighWaterLevel_#t~ret46#1 := isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~12#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret46#1;havoc isHighWaterLevel_#t~ret46#1; 2426#L744-3 assume 0 != isHighWaterLevel_~tmp~8#1;isHighWaterLevel_~tmp___0~2#1 := 0; 2231#L744-5 isHighWaterLevel_~retValue_acc~7#1 := isHighWaterLevel_~tmp___0~2#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~7#1; 2423#isHighWaterLevel_returnLabel#2 processEnvironment__wrappee__highWaterSensor_#t~ret34#1 := isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret46#1, isHighWaterLevel_~retValue_acc~7#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~2#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~5#1 := processEnvironment__wrappee__highWaterSensor_#t~ret34#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret34#1; 2415#L602-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 2284#processEnvironment__wrappee__base_returnLabel#3 assume { :end_inline_processEnvironment__wrappee__base } true; 2285#L598-3 havoc processEnvironment__wrappee__highWaterSensor_#t~ret34#1, processEnvironment__wrappee__highWaterSensor_~tmp~5#1;assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 2376#L624-1 havoc processEnvironment_#t~ret35#1, processEnvironment_~tmp~6#1;assume { :end_inline_processEnvironment } true; 2338#L573-1 assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret4#1, __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification1_spec__1_~tmp~0#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; 2339#isMethaneLevelCritical_returnLabel#3 __utac_acc__Specification1_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~0#1 := __utac_acc__Specification1_spec__1_#t~ret4#1;havoc __utac_acc__Specification1_spec__1_#t~ret4#1; 2362#L61 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0#1); 2364#L61-1 havoc __utac_acc__Specification1_spec__1_#t~ret4#1, __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :end_inline___utac_acc__Specification1_spec__1 } true; 2349#timeShift_returnLabel#1 assume { :end_inline_timeShift } true; 2268#L497-2 [2023-11-12 02:28:33,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:33,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 5 times [2023-11-12 02:28:33,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:33,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666129658] [2023-11-12 02:28:33,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:33,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:28:33,051 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:28:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:28:33,072 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:28:33,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:33,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1468483911, now seen corresponding path program 1 times [2023-11-12 02:28:33,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:33,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706228253] [2023-11-12 02:28:33,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:33,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:33,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:33,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:33,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706228253] [2023-11-12 02:28:33,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706228253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:33,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:33,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:28:33,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660830787] [2023-11-12 02:28:33,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:33,111 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-12 02:28:33,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:33,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:28:33,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:28:33,112 INFO L87 Difference]: Start difference. First operand 264 states and 326 transitions. cyclomatic complexity: 64 Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:33,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:33,213 INFO L93 Difference]: Finished difference Result 449 states and 549 transitions. [2023-11-12 02:28:33,213 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 449 states and 549 transitions. [2023-11-12 02:28:33,217 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 316 [2023-11-12 02:28:33,222 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 449 states to 449 states and 549 transitions. [2023-11-12 02:28:33,222 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 449 [2023-11-12 02:28:33,223 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 449 [2023-11-12 02:28:33,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 449 states and 549 transitions. [2023-11-12 02:28:33,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:33,224 INFO L218 hiAutomatonCegarLoop]: Abstraction has 449 states and 549 transitions. [2023-11-12 02:28:33,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states and 549 transitions. [2023-11-12 02:28:33,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 264. [2023-11-12 02:28:33,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 264 states have (on average 1.2121212121212122) internal successors, (320), 263 states have internal predecessors, (320), 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) [2023-11-12 02:28:33,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 320 transitions. [2023-11-12 02:28:33,233 INFO L240 hiAutomatonCegarLoop]: Abstraction has 264 states and 320 transitions. [2023-11-12 02:28:33,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:28:33,235 INFO L428 stractBuchiCegarLoop]: Abstraction has 264 states and 320 transitions. [2023-11-12 02:28:33,235 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-12 02:28:33,235 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 264 states and 320 transitions. [2023-11-12 02:28:33,237 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 182 [2023-11-12 02:28:33,237 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:28:33,238 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:28:33,238 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:33,239 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, 1] [2023-11-12 02:28:33,239 INFO L748 eck$LassoCheckResult]: Stem: 2987#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(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);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 2988#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret48#1, main_~retValue_acc~9#1, main_~tmp~10#1;havoc main_~retValue_acc~9#1;havoc main_~tmp~10#1;assume { :begin_inline_select_helpers } true; 2977#select_helpers_returnLabel#1 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2978#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~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 3105#valid_product_returnLabel#1 main_#t~ret48#1 := valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;assume { :end_inline_valid_product } true;main_~tmp~10#1 := main_#t~ret48#1;havoc main_#t~ret48#1; 3106#L856 assume 0 != main_~tmp~10#1;assume { :begin_inline_setup } true; 3077#setup_returnLabel#1 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet30#1, test_#t~nondet31#1, test_#t~nondet32#1, test_#t~nondet33#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~1#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~1#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 2989#L497-2 [2023-11-12 02:28:33,239 INFO L750 eck$LassoCheckResult]: Loop: 2989#L497-2 assume !false; 2990#L498 assume test_~splverifierCounter~0#1 < 4; 3022#L499 havoc test_#t~nondet30#1;test_~tmp~4#1 := test_#t~nondet30#1;havoc test_#t~nondet30#1; 2975#L507 assume !(0 != test_~tmp~4#1); 2976#L507-2 havoc test_#t~nondet31#1;test_~tmp___0~1#1 := test_#t~nondet31#1;havoc test_#t~nondet31#1; 2985#L517 assume !(0 != test_~tmp___0~1#1); 3017#L517-2 havoc test_#t~nondet32#1;test_~tmp___2~0#1 := test_#t~nondet32#1;havoc test_#t~nondet32#1; 3018#L527 assume 0 != test_~tmp___2~0#1; 2969#L533-2 assume { :begin_inline_timeShift } true; 2970#L566 assume !(0 != ~pumpRunning~0); 3035#L566-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret35#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 3019#L624 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret34#1, processEnvironment__wrappee__highWaterSensor_~tmp~5#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5#1; 3020#L598-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret46#1, isHighWaterLevel_~retValue_acc~7#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~2#1;havoc isHighWaterLevel_~retValue_acc~7#1;havoc isHighWaterLevel_~tmp~8#1;havoc isHighWaterLevel_~tmp___0~2#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~12#1;havoc isHighWaterSensorDry_~retValue_acc~12#1; 3066#L954-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~12#1; 3071#isHighWaterSensorDry_returnLabel#2 isHighWaterLevel_#t~ret46#1 := isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~12#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret46#1;havoc isHighWaterLevel_#t~ret46#1; 3150#L744-3 assume 0 != isHighWaterLevel_~tmp~8#1;isHighWaterLevel_~tmp___0~2#1 := 0; 3148#L744-5 isHighWaterLevel_~retValue_acc~7#1 := isHighWaterLevel_~tmp___0~2#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~7#1; 3146#isHighWaterLevel_returnLabel#2 processEnvironment__wrappee__highWaterSensor_#t~ret34#1 := isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret46#1, isHighWaterLevel_~retValue_acc~7#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~2#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~5#1 := processEnvironment__wrappee__highWaterSensor_#t~ret34#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret34#1; 3133#L602-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 3003#processEnvironment__wrappee__base_returnLabel#3 assume { :end_inline_processEnvironment__wrappee__base } true; 3004#L598-3 havoc processEnvironment__wrappee__highWaterSensor_#t~ret34#1, processEnvironment__wrappee__highWaterSensor_~tmp~5#1;assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 3095#L624-1 havoc processEnvironment_#t~ret35#1, processEnvironment_~tmp~6#1;assume { :end_inline_processEnvironment } true; 3056#L573-1 assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret4#1, __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification1_spec__1_~tmp~0#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; 3057#isMethaneLevelCritical_returnLabel#3 __utac_acc__Specification1_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~0#1 := __utac_acc__Specification1_spec__1_#t~ret4#1;havoc __utac_acc__Specification1_spec__1_#t~ret4#1; 3080#L61 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0#1); 3082#L61-1 havoc __utac_acc__Specification1_spec__1_#t~ret4#1, __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :end_inline___utac_acc__Specification1_spec__1 } true; 3067#timeShift_returnLabel#1 assume { :end_inline_timeShift } true; 2989#L497-2 [2023-11-12 02:28:33,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:33,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 6 times [2023-11-12 02:28:33,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:33,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626851176] [2023-11-12 02:28:33,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:33,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:28:33,248 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:28:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:28:33,255 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:28:33,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:33,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1815366135, now seen corresponding path program 1 times [2023-11-12 02:28:33,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:33,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775229099] [2023-11-12 02:28:33,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:33,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:28:33,263 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:28:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:28:33,271 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:28:33,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:33,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1440078395, now seen corresponding path program 1 times [2023-11-12 02:28:33,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:33,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278956499] [2023-11-12 02:28:33,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:33,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:28:33,284 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:28:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:28:33,297 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:28:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:28:34,408 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:28:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:28:34,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.11 02:28:34 BoogieIcfgContainer [2023-11-12 02:28:34,460 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-12 02:28:34,461 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:28:34,461 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:28:34,461 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:28:34,462 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:28:31" (3/4) ... [2023-11-12 02:28:34,463 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-12 02:28:34,516 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac05227f-dc5a-49e8-9f3b-02b96aa62043/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:28:34,516 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:28:34,517 INFO L158 Benchmark]: Toolchain (without parser) took 4870.75ms. Allocated memory is still 199.2MB. Free memory was 155.3MB in the beginning and 107.9MB in the end (delta: 47.4MB). Peak memory consumption was 47.9MB. Max. memory is 16.1GB. [2023-11-12 02:28:34,517 INFO L158 Benchmark]: CDTParser took 0.68ms. Allocated memory is still 117.4MB. Free memory is still 68.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:28:34,518 INFO L158 Benchmark]: CACSL2BoogieTranslator took 552.70ms. Allocated memory is still 199.2MB. Free memory was 155.3MB in the beginning and 135.9MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-12 02:28:34,518 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.24ms. Allocated memory is still 199.2MB. Free memory was 135.9MB in the beginning and 132.2MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:28:34,519 INFO L158 Benchmark]: Boogie Preprocessor took 50.67ms. Allocated memory is still 199.2MB. Free memory was 132.2MB in the beginning and 129.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:28:34,519 INFO L158 Benchmark]: RCFGBuilder took 836.24ms. Allocated memory is still 199.2MB. Free memory was 129.6MB in the beginning and 103.4MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-12 02:28:34,520 INFO L158 Benchmark]: BuchiAutomizer took 3293.16ms. Allocated memory is still 199.2MB. Free memory was 103.4MB in the beginning and 111.0MB in the end (delta: -7.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:28:34,520 INFO L158 Benchmark]: Witness Printer took 55.49ms. Allocated memory is still 199.2MB. Free memory was 111.0MB in the beginning and 107.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:28:34,522 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68ms. Allocated memory is still 117.4MB. Free memory is still 68.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 552.70ms. Allocated memory is still 199.2MB. Free memory was 155.3MB in the beginning and 135.9MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.24ms. Allocated memory is still 199.2MB. Free memory was 135.9MB in the beginning and 132.2MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.67ms. Allocated memory is still 199.2MB. Free memory was 132.2MB in the beginning and 129.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 836.24ms. Allocated memory is still 199.2MB. Free memory was 129.6MB in the beginning and 103.4MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * BuchiAutomizer took 3293.16ms. Allocated memory is still 199.2MB. Free memory was 103.4MB in the beginning and 111.0MB in the end (delta: -7.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 55.49ms. Allocated memory is still 199.2MB. Free memory was 111.0MB in the beginning and 107.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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,"Specification1_spec.i","") [49] - GenericResultAtLocation [Line: 78]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [78] - GenericResultAtLocation [Line: 116]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [116] - GenericResultAtLocation [Line: 482]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [482] - GenericResultAtLocation [Line: 551]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [551] - GenericResultAtLocation [Line: 773]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [773] - GenericResultAtLocation [Line: 869]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [869] - GenericResultAtLocation [Line: 973]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [973] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (5 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.5 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 264 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.2s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 2.1s. Construction of modules took 0.3s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 0. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 591 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, 1460 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1460 mSDsluCounter, 3352 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1888 mSDsCounter, 80 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 310 IncrementalHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 80 mSolverCounterUnsat, 1464 mSDtfsCounter, 310 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 497]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L286] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L559] int pumpRunning = 0; [L560] int systemActive = 1; [L774] int cleanupTimeShifts = 4; [L871] int waterLevel = 1; [L872] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L847] int retValue_acc ; [L848] int tmp ; [L852] FCALL select_helpers() [L853] FCALL select_features() [L854] CALL, EXPR valid_product() [L108] int retValue_acc ; [L111] retValue_acc = 1 [L112] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L854] RET, EXPR valid_product() [L854] tmp = valid_product() [L856] COND TRUE \read(tmp) [L858] FCALL setup() [L859] CALL runTest() [L841] CALL test() [L488] int splverifierCounter ; [L489] int tmp ; [L490] int tmp___0 ; [L491] int tmp___1 ; [L492] int tmp___2 ; [L495] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] Loop: [L497] COND TRUE 1 [L499] COND TRUE splverifierCounter < 4 [L505] tmp = __VERIFIER_nondet_int() [L507] COND FALSE !(\read(tmp)) [L515] tmp___0 = __VERIFIER_nondet_int() [L517] COND FALSE !(\read(tmp___0)) [L525] tmp___2 = __VERIFIER_nondet_int() [L527] COND TRUE \read(tmp___2) [L540] CALL timeShift() [L566] COND FALSE !(\read(pumpRunning)) [L573] COND TRUE \read(systemActive) [L575] CALL processEnvironment() [L621] int tmp ; [L624] COND FALSE !(\read(pumpRunning)) [L639] CALL processEnvironment__wrappee__highWaterSensor() [L595] int tmp ; [L598] COND TRUE ! pumpRunning [L600] CALL, EXPR isHighWaterLevel() [L736] int retValue_acc ; [L737] int tmp ; [L738] int tmp___0 ; [L742] CALL, EXPR isHighWaterSensorDry() [L951] int retValue_acc ; [L954] COND TRUE waterLevel < 2 [L955] retValue_acc = 1 [L956] return (retValue_acc); [L742] RET, EXPR isHighWaterSensorDry() [L742] tmp = isHighWaterSensorDry() [L744] COND TRUE \read(tmp) [L745] tmp___0 = 0 [L749] retValue_acc = tmp___0 [L750] return (retValue_acc); [L600] RET, EXPR isHighWaterLevel() [L600] tmp = isHighWaterLevel() [L602] COND FALSE !(\read(tmp)) [L608] FCALL processEnvironment__wrappee__base() [L639] RET processEnvironment__wrappee__highWaterSensor() [L575] RET processEnvironment() [L581] CALL __utac_acc__Specification1_spec__1() [L54] int tmp ; [L55] int tmp___0 ; [L59] CALL, EXPR isMethaneLevelCritical() [L910] int retValue_acc ; [L913] retValue_acc = methaneLevelCritical [L914] return (retValue_acc); [L59] RET, EXPR isMethaneLevelCritical() [L59] tmp = isMethaneLevelCritical() [L61] COND FALSE !(\read(tmp)) [L581] RET __utac_acc__Specification1_spec__1() [L540] RET timeShift() End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 497]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L286] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L559] int pumpRunning = 0; [L560] int systemActive = 1; [L774] int cleanupTimeShifts = 4; [L871] int waterLevel = 1; [L872] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L847] int retValue_acc ; [L848] int tmp ; [L852] FCALL select_helpers() [L853] FCALL select_features() [L854] CALL, EXPR valid_product() [L108] int retValue_acc ; [L111] retValue_acc = 1 [L112] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L854] RET, EXPR valid_product() [L854] tmp = valid_product() [L856] COND TRUE \read(tmp) [L858] FCALL setup() [L859] CALL runTest() [L841] CALL test() [L488] int splverifierCounter ; [L489] int tmp ; [L490] int tmp___0 ; [L491] int tmp___1 ; [L492] int tmp___2 ; [L495] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] Loop: [L497] COND TRUE 1 [L499] COND TRUE splverifierCounter < 4 [L505] tmp = __VERIFIER_nondet_int() [L507] COND FALSE !(\read(tmp)) [L515] tmp___0 = __VERIFIER_nondet_int() [L517] COND FALSE !(\read(tmp___0)) [L525] tmp___2 = __VERIFIER_nondet_int() [L527] COND TRUE \read(tmp___2) [L540] CALL timeShift() [L566] COND FALSE !(\read(pumpRunning)) [L573] COND TRUE \read(systemActive) [L575] CALL processEnvironment() [L621] int tmp ; [L624] COND FALSE !(\read(pumpRunning)) [L639] CALL processEnvironment__wrappee__highWaterSensor() [L595] int tmp ; [L598] COND TRUE ! pumpRunning [L600] CALL, EXPR isHighWaterLevel() [L736] int retValue_acc ; [L737] int tmp ; [L738] int tmp___0 ; [L742] CALL, EXPR isHighWaterSensorDry() [L951] int retValue_acc ; [L954] COND TRUE waterLevel < 2 [L955] retValue_acc = 1 [L956] return (retValue_acc); [L742] RET, EXPR isHighWaterSensorDry() [L742] tmp = isHighWaterSensorDry() [L744] COND TRUE \read(tmp) [L745] tmp___0 = 0 [L749] retValue_acc = tmp___0 [L750] return (retValue_acc); [L600] RET, EXPR isHighWaterLevel() [L600] tmp = isHighWaterLevel() [L602] COND FALSE !(\read(tmp)) [L608] FCALL processEnvironment__wrappee__base() [L639] RET processEnvironment__wrappee__highWaterSensor() [L575] RET processEnvironment() [L581] CALL __utac_acc__Specification1_spec__1() [L54] int tmp ; [L55] int tmp___0 ; [L59] CALL, EXPR isMethaneLevelCritical() [L910] int retValue_acc ; [L913] retValue_acc = methaneLevelCritical [L914] return (retValue_acc); [L59] RET, EXPR isMethaneLevelCritical() [L59] tmp = isMethaneLevelCritical() [L61] COND FALSE !(\read(tmp)) [L581] RET __utac_acc__Specification1_spec__1() [L540] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-12 02:28:34,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac05227f-dc5a-49e8-9f3b-02b96aa62043/bin/uautomizer-verify-uTZkv6EMXl/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)