./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product53.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product53.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e1c4d106eb612b91999bdca4bb49f57df1223b70f35ecd881d6daa6062cb1b0b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:10:51,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:10:51,990 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 06:10:51,995 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:10:51,995 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:10:52,020 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:10:52,021 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:10:52,021 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:10:52,022 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:10:52,023 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:10:52,023 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:10:52,023 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:10:52,024 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:10:52,024 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:10:52,025 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:10:52,025 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:10:52,025 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:10:52,026 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:10:52,026 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:10:52,027 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:10:52,027 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:10:52,028 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:10:52,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:10:52,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:10:52,030 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:10:52,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:10:52,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:10:52,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:10:52,031 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:10:52,032 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:10:52,032 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:10:52,033 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:10:52,033 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:10:52,033 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:10:52,034 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:10:52,034 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:10:52,035 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:10:52,035 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:10:52,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:10:52,036 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:10:52,036 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:10:52,037 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:10:52,037 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:10:52,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:10:52,038 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:10:52,038 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:10:52,038 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:10:52,039 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1c4d106eb612b91999bdca4bb49f57df1223b70f35ecd881d6daa6062cb1b0b [2024-11-09 06:10:52,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:10:52,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:10:52,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:10:52,360 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:10:52,360 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:10:52,362 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/minepump_spec3_product53.cil.c Unable to find full path for "g++" [2024-11-09 06:10:54,412 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:10:54,633 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:10:54,634 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/sv-benchmarks/c/product-lines/minepump_spec3_product53.cil.c [2024-11-09 06:10:54,646 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/data/fdec01792/be946a80af3a496992f836571d7b3e12/FLAG0c2444641 [2024-11-09 06:10:54,984 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/data/fdec01792/be946a80af3a496992f836571d7b3e12 [2024-11-09 06:10:54,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:10:54,988 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:10:54,989 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:10:54,989 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:10:54,996 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:10:54,998 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:10:54" (1/1) ... [2024-11-09 06:10:54,999 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c25e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:10:54, skipping insertion in model container [2024-11-09 06:10:54,999 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:10:54" (1/1) ... [2024-11-09 06:10:55,073 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:10:55,263 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/sv-benchmarks/c/product-lines/minepump_spec3_product53.cil.c[1605,1618] [2024-11-09 06:10:55,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:10:55,463 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:10:55,473 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] [2024-11-09 06:10:55,475 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [58] [2024-11-09 06:10:55,475 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [96] [2024-11-09 06:10:55,476 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [165] [2024-11-09 06:10:55,476 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [398] [2024-11-09 06:10:55,476 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [502] [2024-11-09 06:10:55,476 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [536] [2024-11-09 06:10:55,477 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [902] [2024-11-09 06:10:55,484 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/sv-benchmarks/c/product-lines/minepump_spec3_product53.cil.c[1605,1618] [2024-11-09 06:10:55,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:10:55,608 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:10:55,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:10:55 WrapperNode [2024-11-09 06:10:55,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:10:55,610 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:10:55,610 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:10:55,610 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:10:55,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:10:55" (1/1) ... [2024-11-09 06:10:55,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:10:55" (1/1) ... [2024-11-09 06:10:55,674 INFO L138 Inliner]: procedures = 56, calls = 103, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 227 [2024-11-09 06:10:55,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:10:55,675 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:10:55,676 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:10:55,676 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:10:55,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:10:55" (1/1) ... [2024-11-09 06:10:55,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:10:55" (1/1) ... [2024-11-09 06:10:55,689 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:10:55" (1/1) ... [2024-11-09 06:10:55,692 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:10:55" (1/1) ... [2024-11-09 06:10:55,700 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:10:55" (1/1) ... [2024-11-09 06:10:55,708 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:10:55" (1/1) ... [2024-11-09 06:10:55,713 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:10:55" (1/1) ... [2024-11-09 06:10:55,715 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:10:55" (1/1) ... [2024-11-09 06:10:55,721 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:10:55,722 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:10:55,723 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:10:55,723 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:10:55,724 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:10:55" (1/1) ... [2024-11-09 06:10:55,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:10:55,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:10:55,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:10:55,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:10:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:10:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-09 06:10:55,804 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-09 06:10:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2024-11-09 06:10:55,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2024-11-09 06:10:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 06:10:55,805 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 06:10:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 06:10:55,805 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 06:10:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 06:10:55,806 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 06:10:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-09 06:10:55,806 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-09 06:10:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2024-11-09 06:10:55,807 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2024-11-09 06:10:55,807 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2024-11-09 06:10:55,807 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2024-11-09 06:10:55,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:10:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-09 06:10:55,808 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-09 06:10:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:10:55,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:10:55,897 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:10:55,898 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:10:56,287 INFO L? ?]: Removed 53 outVars from TransFormulas that were not future-live. [2024-11-09 06:10:56,288 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:10:56,402 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:10:56,404 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 06:10:56,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:10:56 BoogieIcfgContainer [2024-11-09 06:10:56,405 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:10:56,407 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:10:56,409 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:10:56,412 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:10:56,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:10:54" (1/3) ... [2024-11-09 06:10:56,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687375aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:10:56, skipping insertion in model container [2024-11-09 06:10:56,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:10:55" (2/3) ... [2024-11-09 06:10:56,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687375aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:10:56, skipping insertion in model container [2024-11-09 06:10:56,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:10:56" (3/3) ... [2024-11-09 06:10:56,415 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product53.cil.c [2024-11-09 06:10:56,435 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:10:56,435 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:10:56,506 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:10:56,515 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@199e8dbd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:10:56,515 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:10:56,520 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 52 states have internal predecessors, (60), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-09 06:10:56,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 06:10:56,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:56,531 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:10:56,532 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:10:56,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:56,538 INFO L85 PathProgramCache]: Analyzing trace with hash 492791786, now seen corresponding path program 1 times [2024-11-09 06:10:56,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:10:56,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713985183] [2024-11-09 06:10:56,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:56,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:10:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:56,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:10:56,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:10:56,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713985183] [2024-11-09 06:10:56,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713985183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:10:56,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:10:56,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:10:56,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769128556] [2024-11-09 06:10:56,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:10:56,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 06:10:56,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:10:56,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 06:10:56,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:10:56,747 INFO L87 Difference]: Start difference. First operand has 69 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 52 states have internal predecessors, (60), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:10:56,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:56,840 INFO L93 Difference]: Finished difference Result 136 states and 185 transitions. [2024-11-09 06:10:56,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 06:10:56,843 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-09 06:10:56,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:56,854 INFO L225 Difference]: With dead ends: 136 [2024-11-09 06:10:56,855 INFO L226 Difference]: Without dead ends: 64 [2024-11-09 06:10:56,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:10:56,866 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:10:56,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:10:56,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-09 06:10:56,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-09 06:10:56,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 48 states have internal predecessors, (52), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-09 06:10:56,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2024-11-09 06:10:56,924 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 17 [2024-11-09 06:10:56,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:10:56,925 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2024-11-09 06:10:56,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:10:56,927 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2024-11-09 06:10:56,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 06:10:56,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:56,929 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:10:56,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:10:56,929 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:10:56,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:56,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1531552330, now seen corresponding path program 1 times [2024-11-09 06:10:56,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:10:56,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589504410] [2024-11-09 06:10:56,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:56,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:10:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:10:57,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:10:57,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589504410] [2024-11-09 06:10:57,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589504410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:10:57,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:10:57,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:10:57,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848286179] [2024-11-09 06:10:57,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:10:57,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:10:57,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:10:57,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:10:57,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:10:57,079 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:10:57,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:57,147 INFO L93 Difference]: Finished difference Result 105 states and 137 transitions. [2024-11-09 06:10:57,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:10:57,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-09 06:10:57,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:57,149 INFO L225 Difference]: With dead ends: 105 [2024-11-09 06:10:57,149 INFO L226 Difference]: Without dead ends: 56 [2024-11-09 06:10:57,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:10:57,151 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:10:57,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 103 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:10:57,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-09 06:10:57,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-09 06:10:57,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 43 states have internal predecessors, (46), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 06:10:57,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2024-11-09 06:10:57,161 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 18 [2024-11-09 06:10:57,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:10:57,161 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2024-11-09 06:10:57,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:10:57,162 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2024-11-09 06:10:57,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 06:10:57,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:57,163 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:10:57,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:10:57,163 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:10:57,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:57,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1673166094, now seen corresponding path program 1 times [2024-11-09 06:10:57,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:10:57,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928880603] [2024-11-09 06:10:57,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:57,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:10:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:57,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:10:57,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:10:57,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928880603] [2024-11-09 06:10:57,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928880603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:10:57,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:10:57,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:10:57,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670348122] [2024-11-09 06:10:57,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:10:57,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:10:57,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:10:57,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:10:57,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:10:57,281 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:10:57,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:57,347 INFO L93 Difference]: Finished difference Result 110 states and 143 transitions. [2024-11-09 06:10:57,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:10:57,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-09 06:10:57,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:57,361 INFO L225 Difference]: With dead ends: 110 [2024-11-09 06:10:57,364 INFO L226 Difference]: Without dead ends: 56 [2024-11-09 06:10:57,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:10:57,367 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 61 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:10:57,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 54 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:10:57,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-09 06:10:57,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-09 06:10:57,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 43 states have internal predecessors, (45), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 06:10:57,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2024-11-09 06:10:57,392 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 20 [2024-11-09 06:10:57,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:10:57,396 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2024-11-09 06:10:57,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:10:57,396 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2024-11-09 06:10:57,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 06:10:57,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:57,398 INFO L215 NwaCegarLoop]: trace histogram [2, 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, 1] [2024-11-09 06:10:57,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:10:57,398 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:10:57,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:57,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1582534747, now seen corresponding path program 1 times [2024-11-09 06:10:57,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:10:57,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772362996] [2024-11-09 06:10:57,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:57,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:10:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:57,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:10:57,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:10:57,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772362996] [2024-11-09 06:10:57,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772362996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:10:57,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:10:57,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:10:57,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246961434] [2024-11-09 06:10:57,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:10:57,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:10:57,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:10:57,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:10:57,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:10:57,604 INFO L87 Difference]: Start difference. First operand 56 states and 71 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 06:10:57,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:57,723 INFO L93 Difference]: Finished difference Result 149 states and 194 transitions. [2024-11-09 06:10:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:10:57,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2024-11-09 06:10:57,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:57,727 INFO L225 Difference]: With dead ends: 149 [2024-11-09 06:10:57,727 INFO L226 Difference]: Without dead ends: 95 [2024-11-09 06:10:57,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:10:57,733 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 43 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:10:57,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 114 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:10:57,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-09 06:10:57,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2024-11-09 06:10:57,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 68 states have internal predecessors, (76), 17 states have call successors, (17), 15 states have call predecessors, (17), 15 states have return successors, (23), 15 states have call predecessors, (23), 17 states have call successors, (23) [2024-11-09 06:10:57,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2024-11-09 06:10:57,770 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 30 [2024-11-09 06:10:57,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:10:57,771 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2024-11-09 06:10:57,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 06:10:57,771 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2024-11-09 06:10:57,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 06:10:57,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:57,772 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1] [2024-11-09 06:10:57,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 06:10:57,773 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:10:57,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:57,776 INFO L85 PathProgramCache]: Analyzing trace with hash -800432377, now seen corresponding path program 1 times [2024-11-09 06:10:57,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:10:57,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904541372] [2024-11-09 06:10:57,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:57,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:10:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:58,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:10:58,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:10:58,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904541372] [2024-11-09 06:10:58,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904541372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:10:58,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:10:58,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:10:58,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636468695] [2024-11-09 06:10:58,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:10:58,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:10:58,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:10:58,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:10:58,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:10:58,153 INFO L87 Difference]: Start difference. First operand 93 states and 116 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 06:10:58,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:58,401 INFO L93 Difference]: Finished difference Result 265 states and 330 transitions. [2024-11-09 06:10:58,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:10:58,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2024-11-09 06:10:58,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:58,404 INFO L225 Difference]: With dead ends: 265 [2024-11-09 06:10:58,404 INFO L226 Difference]: Without dead ends: 174 [2024-11-09 06:10:58,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:10:58,406 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 95 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:10:58,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 245 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:10:58,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-09 06:10:58,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 146. [2024-11-09 06:10:58,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 96 states have (on average 1.25) internal successors, (120), 105 states have internal predecessors, (120), 24 states have call successors, (24), 22 states have call predecessors, (24), 25 states have return successors, (33), 24 states have call predecessors, (33), 24 states have call successors, (33) [2024-11-09 06:10:58,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 177 transitions. [2024-11-09 06:10:58,438 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 177 transitions. Word has length 33 [2024-11-09 06:10:58,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:10:58,439 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 177 transitions. [2024-11-09 06:10:58,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 06:10:58,439 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 177 transitions. [2024-11-09 06:10:58,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 06:10:58,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:58,440 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:10:58,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 06:10:58,441 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:10:58,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:58,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1958599232, now seen corresponding path program 1 times [2024-11-09 06:10:58,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:10:58,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834575927] [2024-11-09 06:10:58,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:58,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:10:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:10:58,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:10:58,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834575927] [2024-11-09 06:10:58,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834575927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:10:58,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:10:58,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:10:58,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513130893] [2024-11-09 06:10:58,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:10:58,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:10:58,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:10:58,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:10:58,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:10:58,648 INFO L87 Difference]: Start difference. First operand 146 states and 177 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 06:10:58,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:58,769 INFO L93 Difference]: Finished difference Result 291 states and 354 transitions. [2024-11-09 06:10:58,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:10:58,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2024-11-09 06:10:58,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:58,772 INFO L225 Difference]: With dead ends: 291 [2024-11-09 06:10:58,772 INFO L226 Difference]: Without dead ends: 147 [2024-11-09 06:10:58,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:10:58,777 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 49 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:10:58,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 158 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:10:58,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-09 06:10:58,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2024-11-09 06:10:58,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 95 states have (on average 1.231578947368421) internal successors, (117), 104 states have internal predecessors, (117), 24 states have call successors, (24), 22 states have call predecessors, (24), 25 states have return successors, (33), 24 states have call predecessors, (33), 24 states have call successors, (33) [2024-11-09 06:10:58,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 174 transitions. [2024-11-09 06:10:58,814 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 174 transitions. Word has length 36 [2024-11-09 06:10:58,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:10:58,814 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 174 transitions. [2024-11-09 06:10:58,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 06:10:58,815 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 174 transitions. [2024-11-09 06:10:58,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 06:10:58,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:58,816 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:10:58,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 06:10:58,816 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:10:58,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:58,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1256444074, now seen corresponding path program 1 times [2024-11-09 06:10:58,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:10:58,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001000783] [2024-11-09 06:10:58,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:58,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:10:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:10:58,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:10:58,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001000783] [2024-11-09 06:10:58,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001000783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:10:58,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:10:58,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:10:58,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850725603] [2024-11-09 06:10:58,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:10:58,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:10:58,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:10:58,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:10:58,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:10:58,895 INFO L87 Difference]: Start difference. First operand 145 states and 174 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 06:10:59,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:59,005 INFO L93 Difference]: Finished difference Result 251 states and 308 transitions. [2024-11-09 06:10:59,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:10:59,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2024-11-09 06:10:59,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:59,008 INFO L225 Difference]: With dead ends: 251 [2024-11-09 06:10:59,012 INFO L226 Difference]: Without dead ends: 145 [2024-11-09 06:10:59,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:10:59,014 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 46 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:10:59,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 196 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:10:59,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-09 06:10:59,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-09 06:10:59,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 95 states have (on average 1.1789473684210525) internal successors, (112), 104 states have internal predecessors, (112), 24 states have call successors, (24), 22 states have call predecessors, (24), 25 states have return successors, (29), 24 states have call predecessors, (29), 24 states have call successors, (29) [2024-11-09 06:10:59,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 165 transitions. [2024-11-09 06:10:59,052 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 165 transitions. Word has length 36 [2024-11-09 06:10:59,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:10:59,053 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 165 transitions. [2024-11-09 06:10:59,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 06:10:59,054 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 165 transitions. [2024-11-09 06:10:59,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 06:10:59,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:59,058 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:10:59,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 06:10:59,059 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:10:59,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:59,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1850659523, now seen corresponding path program 1 times [2024-11-09 06:10:59,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:10:59,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853877372] [2024-11-09 06:10:59,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:59,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:10:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:10:59,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:10:59,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853877372] [2024-11-09 06:10:59,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853877372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:10:59,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:10:59,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 06:10:59,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498331631] [2024-11-09 06:10:59,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:10:59,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 06:10:59,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:10:59,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 06:10:59,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:10:59,437 INFO L87 Difference]: Start difference. First operand 145 states and 165 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 06:10:59,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:59,990 INFO L93 Difference]: Finished difference Result 426 states and 503 transitions. [2024-11-09 06:10:59,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 06:10:59,991 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) Word has length 39 [2024-11-09 06:10:59,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:59,993 INFO L225 Difference]: With dead ends: 426 [2024-11-09 06:10:59,994 INFO L226 Difference]: Without dead ends: 320 [2024-11-09 06:10:59,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:10:59,995 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 290 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:10:59,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 166 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:10:59,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-09 06:11:00,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 273. [2024-11-09 06:11:00,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 181 states have (on average 1.1878453038674033) internal successors, (215), 196 states have internal predecessors, (215), 45 states have call successors, (45), 41 states have call predecessors, (45), 46 states have return successors, (55), 44 states have call predecessors, (55), 45 states have call successors, (55) [2024-11-09 06:11:00,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 315 transitions. [2024-11-09 06:11:00,040 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 315 transitions. Word has length 39 [2024-11-09 06:11:00,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:11:00,040 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 315 transitions. [2024-11-09 06:11:00,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 06:11:00,041 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 315 transitions. [2024-11-09 06:11:00,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-09 06:11:00,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:11:00,043 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:11:00,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 06:11:00,043 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:11:00,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:11:00,044 INFO L85 PathProgramCache]: Analyzing trace with hash -2084106085, now seen corresponding path program 1 times [2024-11-09 06:11:00,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:11:00,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556288325] [2024-11-09 06:11:00,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:11:00,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:11:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:00,605 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:11:00,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:11:00,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556288325] [2024-11-09 06:11:00,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556288325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:11:00,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539871325] [2024-11-09 06:11:00,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:11:00,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:11:00,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:11:00,609 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:11:00,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:11:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:00,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 06:11:00,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:11:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:11:01,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:11:01,602 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 06:11:01,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539871325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:11:01,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [451039095] [2024-11-09 06:11:01,629 INFO L159 IcfgInterpreter]: Started Sifa with 45 locations of interest [2024-11-09 06:11:01,629 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:11:01,633 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:11:01,638 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:11:01,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:11:04,809 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 120 for LOIs [2024-11-09 06:11:04,848 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 153 for LOIs [2024-11-09 06:11:07,386 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 153 for LOIs [2024-11-09 06:11:08,342 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 153 for LOIs [2024-11-09 06:11:08,694 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 139 for LOIs [2024-11-09 06:11:08,744 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:11:19,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [451039095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:11:19,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:11:19,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [14, 9, 8] total 43 [2024-11-09 06:11:19,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261099718] [2024-11-09 06:11:19,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:11:19,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 06:11:19,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:11:19,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 06:11:19,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=1515, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 06:11:19,067 INFO L87 Difference]: Start difference. First operand 273 states and 315 transitions. Second operand has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 17 states have internal predecessors, (34), 6 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 06:11:22,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:11:22,651 INFO L93 Difference]: Finished difference Result 557 states and 648 transitions. [2024-11-09 06:11:22,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 06:11:22,652 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 17 states have internal predecessors, (34), 6 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 63 [2024-11-09 06:11:22,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:11:22,655 INFO L225 Difference]: With dead ends: 557 [2024-11-09 06:11:22,655 INFO L226 Difference]: Without dead ends: 356 [2024-11-09 06:11:22,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 147 SyntacticMatches, 14 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1182 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=370, Invalid=1886, Unknown=0, NotChecked=0, Total=2256 [2024-11-09 06:11:22,659 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 63 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:11:22,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 306 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 06:11:22,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-11-09 06:11:22,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 339. [2024-11-09 06:11:22,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 227 states have (on average 1.171806167400881) internal successors, (266), 243 states have internal predecessors, (266), 55 states have call successors, (55), 51 states have call predecessors, (55), 56 states have return successors, (65), 53 states have call predecessors, (65), 55 states have call successors, (65) [2024-11-09 06:11:22,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 386 transitions. [2024-11-09 06:11:22,737 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 386 transitions. Word has length 63 [2024-11-09 06:11:22,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:11:22,737 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 386 transitions. [2024-11-09 06:11:22,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 17 states have internal predecessors, (34), 6 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 06:11:22,738 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 386 transitions. [2024-11-09 06:11:22,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 06:11:22,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:11:22,739 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2024-11-09 06:11:22,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:11:22,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:11:22,944 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:11:22,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:11:22,945 INFO L85 PathProgramCache]: Analyzing trace with hash -483490501, now seen corresponding path program 1 times [2024-11-09 06:11:22,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:11:22,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023825411] [2024-11-09 06:11:22,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:11:22,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:11:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:11:23,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:11:23,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023825411] [2024-11-09 06:11:23,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023825411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:11:23,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:11:23,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 06:11:23,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089344955] [2024-11-09 06:11:23,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:11:23,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:11:23,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:11:23,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:11:23,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:11:23,259 INFO L87 Difference]: Start difference. First operand 339 states and 386 transitions. Second operand has 10 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-09 06:11:23,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:11:23,970 INFO L93 Difference]: Finished difference Result 569 states and 659 transitions. [2024-11-09 06:11:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 06:11:23,971 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 64 [2024-11-09 06:11:23,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:11:23,975 INFO L225 Difference]: With dead ends: 569 [2024-11-09 06:11:23,975 INFO L226 Difference]: Without dead ends: 366 [2024-11-09 06:11:23,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2024-11-09 06:11:23,978 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 234 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:11:23,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 184 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:11:23,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-11-09 06:11:24,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 345. [2024-11-09 06:11:24,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 230 states have (on average 1.1608695652173913) internal successors, (267), 246 states have internal predecessors, (267), 55 states have call successors, (55), 53 states have call predecessors, (55), 59 states have return successors, (65), 54 states have call predecessors, (65), 55 states have call successors, (65) [2024-11-09 06:11:24,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 387 transitions. [2024-11-09 06:11:24,062 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 387 transitions. Word has length 64 [2024-11-09 06:11:24,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:11:24,063 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 387 transitions. [2024-11-09 06:11:24,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-09 06:11:24,063 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 387 transitions. [2024-11-09 06:11:24,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 06:11:24,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:11:24,065 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:11:24,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 06:11:24,066 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:11:24,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:11:24,066 INFO L85 PathProgramCache]: Analyzing trace with hash 191601992, now seen corresponding path program 1 times [2024-11-09 06:11:24,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:11:24,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721848512] [2024-11-09 06:11:24,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:11:24,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:11:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:24,331 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:11:24,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:11:24,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721848512] [2024-11-09 06:11:24,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721848512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:11:24,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416007189] [2024-11-09 06:11:24,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:11:24,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:11:24,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:11:24,336 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:11:24,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:11:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:24,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 06:11:24,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:11:24,707 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:11:24,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:11:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 06:11:25,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416007189] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:11:25,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [928056807] [2024-11-09 06:11:25,082 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2024-11-09 06:11:25,083 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:11:25,084 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:11:25,084 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:11:25,084 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:11:27,210 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 142 for LOIs [2024-11-09 06:11:27,306 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 35 for LOIs [2024-11-09 06:11:27,703 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 36 for LOIs [2024-11-09 06:11:27,750 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 36 for LOIs [2024-11-09 06:11:27,787 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 42 for LOIs [2024-11-09 06:11:27,796 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 3 for LOIs [2024-11-09 06:11:27,798 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 57 for LOIs [2024-11-09 06:11:27,817 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:11:31,710 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7842#(and (= ~pumpRunning~0 0) (= 2 ~waterLevel~0) (= ~methaneLevelCritical~0 0))' at error location [2024-11-09 06:11:31,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:11:31,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:11:31,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 8] total 25 [2024-11-09 06:11:31,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733426180] [2024-11-09 06:11:31,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:11:31,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 06:11:31,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:11:31,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 06:11:31,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=2666, Unknown=0, NotChecked=0, Total=2970 [2024-11-09 06:11:31,714 INFO L87 Difference]: Start difference. First operand 345 states and 387 transitions. Second operand has 25 states, 22 states have (on average 4.954545454545454) internal successors, (109), 23 states have internal predecessors, (109), 11 states have call successors, (28), 7 states have call predecessors, (28), 9 states have return successors, (25), 13 states have call predecessors, (25), 11 states have call successors, (25) [2024-11-09 06:11:37,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:11:37,959 INFO L93 Difference]: Finished difference Result 1799 states and 2208 transitions. [2024-11-09 06:11:37,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-11-09 06:11:37,960 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 4.954545454545454) internal successors, (109), 23 states have internal predecessors, (109), 11 states have call successors, (28), 7 states have call predecessors, (28), 9 states have return successors, (25), 13 states have call predecessors, (25), 11 states have call successors, (25) Word has length 66 [2024-11-09 06:11:37,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:11:37,968 INFO L225 Difference]: With dead ends: 1799 [2024-11-09 06:11:37,968 INFO L226 Difference]: Without dead ends: 1433 [2024-11-09 06:11:37,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 173 SyntacticMatches, 6 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8538 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=2953, Invalid=21853, Unknown=0, NotChecked=0, Total=24806 [2024-11-09 06:11:37,976 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 1663 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 2918 mSolverCounterSat, 1083 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 4001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1083 IncrementalHoareTripleChecker+Valid, 2918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:11:37,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 902 Invalid, 4001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1083 Valid, 2918 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 06:11:37,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2024-11-09 06:11:38,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 562. [2024-11-09 06:11:38,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 373 states have (on average 1.1152815013404827) internal successors, (416), 394 states have internal predecessors, (416), 87 states have call successors, (87), 85 states have call predecessors, (87), 101 states have return successors, (112), 92 states have call predecessors, (112), 87 states have call successors, (112) [2024-11-09 06:11:38,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 615 transitions. [2024-11-09 06:11:38,120 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 615 transitions. Word has length 66 [2024-11-09 06:11:38,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:11:38,121 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 615 transitions. [2024-11-09 06:11:38,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 4.954545454545454) internal successors, (109), 23 states have internal predecessors, (109), 11 states have call successors, (28), 7 states have call predecessors, (28), 9 states have return successors, (25), 13 states have call predecessors, (25), 11 states have call successors, (25) [2024-11-09 06:11:38,121 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 615 transitions. [2024-11-09 06:11:38,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-09 06:11:38,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:11:38,124 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:11:38,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:11:38,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 06:11:38,328 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:11:38,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:11:38,328 INFO L85 PathProgramCache]: Analyzing trace with hash 729657539, now seen corresponding path program 1 times [2024-11-09 06:11:38,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:11:38,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106280740] [2024-11-09 06:11:38,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:11:38,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:11:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:38,600 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-09 06:11:38,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:11:38,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106280740] [2024-11-09 06:11:38,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106280740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:11:38,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554004199] [2024-11-09 06:11:38,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:11:38,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:11:38,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:11:38,603 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:11:38,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:11:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:11:38,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:11:38,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:11:38,801 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-09 06:11:38,801 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:11:38,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554004199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:11:38,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:11:38,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-09 06:11:38,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751573806] [2024-11-09 06:11:38,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:11:38,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:11:38,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:11:38,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:11:38,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:11:38,804 INFO L87 Difference]: Start difference. First operand 562 states and 615 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-09 06:11:38,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:11:38,990 INFO L93 Difference]: Finished difference Result 952 states and 1083 transitions. [2024-11-09 06:11:38,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:11:38,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2024-11-09 06:11:38,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:11:38,992 INFO L225 Difference]: With dead ends: 952 [2024-11-09 06:11:38,992 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 06:11:38,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:11:38,995 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 28 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:11:38,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 238 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:11:38,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 06:11:38,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 06:11:38,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-11-09 06:11:38,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 06:11:38,997 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 102 [2024-11-09 06:11:38,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:11:38,997 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 06:11:38,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-09 06:11:38,998 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 06:11:38,998 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 06:11:39,001 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 06:11:39,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 06:11:39,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:11:39,205 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:11:39,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 06:12:05,341 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 06:12:05,362 WARN L162 FloydHoareUtils]: Requires clause for deactivatePump contained old-variable. Original clause: (and (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1)) (<= ~waterLevel~0 1) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 1) (= ~pumpRunning~0 1)) Eliminated clause: (and (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1)) (<= ~waterLevel~0 1) (= 1 ~systemActive~0) (= ~pumpRunning~0 1)) [2024-11-09 06:12:05,383 WARN L162 FloydHoareUtils]: Requires clause for changeMethaneLevel contained old-variable. Original clause: (and (let ((.cse0 (or (= |old(~methaneLevelCritical~0)| 0) (= |old(~methaneLevelCritical~0)| 1))) (.cse1 (= 1 ~systemActive~0))) (or (and .cse0 .cse1 (= ~pumpRunning~0 1)) (and (= ~pumpRunning~0 0) .cse0 .cse1))) (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1)) (or (= 2 ~waterLevel~0) (< ~waterLevel~0 2))) Eliminated clause: (and (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1)) (let ((.cse0 (= 1 ~systemActive~0))) (or (and .cse0 (= ~pumpRunning~0 1)) (and (= ~pumpRunning~0 0) .cse0))) (or (= 2 ~waterLevel~0) (< ~waterLevel~0 2))) [2024-11-09 06:12:05,415 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (= |old(~pumpRunning~0)| 1)) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1)) (or (not .cse0) (and (= ~pumpRunning~0 0) .cse1)) (or (not .cse2) (and .cse1 (= ~pumpRunning~0 1))) (let ((.cse3 (= 1 ~systemActive~0))) (or (and .cse3 .cse2 (<= |old(~waterLevel~0)| 2)) (and .cse3 .cse0 (= |old(~waterLevel~0)| 2)) (and .cse3 .cse0 (<= |old(~waterLevel~0)| 1)))))) Eliminated clause: (and (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1)) (exists ((|old(~pumpRunning~0)| Int) (|old(~waterLevel~0)| Int)) (let ((.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (= |old(~pumpRunning~0)| 1)) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (and (= ~pumpRunning~0 0) .cse1)) (or (not .cse2) (and .cse1 (= ~pumpRunning~0 1))) (let ((.cse3 (= 1 ~systemActive~0))) (or (and .cse3 .cse2 (<= |old(~waterLevel~0)| 2)) (and .cse3 .cse0 (= |old(~waterLevel~0)| 2)) (and .cse3 .cse0 (<= |old(~waterLevel~0)| 1)))))))) [2024-11-09 06:12:05,425 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 06:12:05,436 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__highWaterSensor contained old-variable. Original clause: (let ((.cse1 (= |old(~pumpRunning~0)| 1)) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0)) (or (not .cse1) (= ~pumpRunning~0 1)) (let ((.cse2 (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1))) (.cse3 (= 1 ~systemActive~0))) (or (and .cse2 (<= ~waterLevel~0 1) .cse3 .cse1) (and .cse2 .cse3 .cse0 (<= ~waterLevel~0 2)))))) Eliminated clause: (exists ((|old(~pumpRunning~0)| Int)) (let ((.cse1 (= |old(~pumpRunning~0)| 1)) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0)) (or (not .cse1) (= ~pumpRunning~0 1)) (let ((.cse2 (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1))) (.cse3 (= 1 ~systemActive~0))) (or (and .cse2 (<= ~waterLevel~0 1) .cse3 .cse1) (and .cse2 .cse3 .cse0 (<= ~waterLevel~0 2))))))) [2024-11-09 06:12:05,442 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 06:12:05,447 WARN L162 FloydHoareUtils]: Requires clause for waterRise contained old-variable. Original clause: (and (= |old(~waterLevel~0)| ~waterLevel~0) (let ((.cse0 (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1))) (.cse1 (= 1 ~systemActive~0)) (.cse2 (<= |old(~waterLevel~0)| 2))) (or (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse2 (= ~pumpRunning~0 1))))) Eliminated clause: (let ((.cse0 (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1))) (.cse1 (= 1 ~systemActive~0)) (.cse2 (<= ~waterLevel~0 2))) (or (and .cse0 .cse1 .cse2 (= ~pumpRunning~0 1)) (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2))) [2024-11-09 06:12:05,456 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__lowWaterSensor contained old-variable. Original clause: (let ((.cse1 (= |old(~pumpRunning~0)| 1)) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0)) (or (not .cse1) (= ~pumpRunning~0 1)) (let ((.cse2 (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1))) (.cse3 (= 1 ~systemActive~0))) (or (and .cse2 (<= ~waterLevel~0 1) .cse3 .cse1) (and .cse2 .cse3 .cse0 (<= ~waterLevel~0 2)))))) Eliminated clause: (exists ((|old(~pumpRunning~0)| Int)) (let ((.cse1 (= |old(~pumpRunning~0)| 1)) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0)) (or (not .cse1) (= ~pumpRunning~0 1)) (let ((.cse2 (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1))) (.cse3 (= 1 ~systemActive~0))) (or (and .cse2 (<= ~waterLevel~0 1) .cse3 .cse1) (and .cse2 .cse3 .cse0 (<= ~waterLevel~0 2))))))) [2024-11-09 06:12:05,463 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 06:12:05,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 06:12:05 BoogieIcfgContainer [2024-11-09 06:12:05,467 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 06:12:05,468 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 06:12:05,468 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 06:12:05,468 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 06:12:05,469 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:10:56" (3/4) ... [2024-11-09 06:12:05,471 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 06:12:05,476 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2024-11-09 06:12:05,477 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-09 06:12:05,477 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-09 06:12:05,477 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2024-11-09 06:12:05,477 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-09 06:12:05,477 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-09 06:12:05,478 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 06:12:05,478 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-09 06:12:05,478 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__lowWaterSensor [2024-11-09 06:12:05,490 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 45 nodes and edges [2024-11-09 06:12:05,491 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-09 06:12:05,491 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 06:12:05,492 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 06:12:05,493 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 06:12:05,524 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && ((\old(pumpRunning) != 0) || ((pumpRunning == 0) && (\old(waterLevel) == waterLevel)))) && ((\old(pumpRunning) != 1) || ((\old(waterLevel) == waterLevel) && (pumpRunning == 1)))) && (((((1 == systemActive) && (\old(pumpRunning) == 1)) && (\old(waterLevel) <= 2)) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && (\old(waterLevel) == 2))) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && (\old(waterLevel) <= 1)))) [2024-11-09 06:12:05,556 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && ((\old(pumpRunning) != 0) || ((pumpRunning == 0) && (\old(waterLevel) == waterLevel)))) && ((\old(pumpRunning) != 1) || ((\old(waterLevel) == waterLevel) && (pumpRunning == 1)))) && (((((1 == systemActive) && (\old(pumpRunning) == 1)) && (\old(waterLevel) <= 2)) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && (\old(waterLevel) == 2))) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && (\old(waterLevel) <= 1)))) [2024-11-09 06:12:05,609 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 06:12:05,610 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 06:12:05,610 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 06:12:05,611 INFO L158 Benchmark]: Toolchain (without parser) took 70623.61ms. Allocated memory was 146.8MB in the beginning and 662.7MB in the end (delta: 515.9MB). Free memory was 105.4MB in the beginning and 401.3MB in the end (delta: -295.9MB). Peak memory consumption was 221.1MB. Max. memory is 16.1GB. [2024-11-09 06:12:05,612 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 115.3MB. Free memory was 85.0MB in the beginning and 85.0MB in the end (delta: 27.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:12:05,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 620.42ms. Allocated memory is still 146.8MB. Free memory was 105.4MB in the beginning and 83.4MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 06:12:05,613 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.06ms. Allocated memory is still 146.8MB. Free memory was 83.4MB in the beginning and 80.8MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 06:12:05,613 INFO L158 Benchmark]: Boogie Preprocessor took 46.27ms. Allocated memory is still 146.8MB. Free memory was 80.8MB in the beginning and 79.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:12:05,613 INFO L158 Benchmark]: RCFGBuilder took 683.07ms. Allocated memory is still 146.8MB. Free memory was 79.3MB in the beginning and 102.7MB in the end (delta: -23.4MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2024-11-09 06:12:05,615 INFO L158 Benchmark]: TraceAbstraction took 69060.00ms. Allocated memory was 146.8MB in the beginning and 662.7MB in the end (delta: 515.9MB). Free memory was 101.7MB in the beginning and 409.7MB in the end (delta: -308.0MB). Peak memory consumption was 392.4MB. Max. memory is 16.1GB. [2024-11-09 06:12:05,616 INFO L158 Benchmark]: Witness Printer took 142.57ms. Allocated memory is still 662.7MB. Free memory was 409.7MB in the beginning and 401.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-09 06:12:05,619 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 115.3MB. Free memory was 85.0MB in the beginning and 85.0MB in the end (delta: 27.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 620.42ms. Allocated memory is still 146.8MB. Free memory was 105.4MB in the beginning and 83.4MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.06ms. Allocated memory is still 146.8MB. Free memory was 83.4MB in the beginning and 80.8MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.27ms. Allocated memory is still 146.8MB. Free memory was 80.8MB in the beginning and 79.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 683.07ms. Allocated memory is still 146.8MB. Free memory was 79.3MB in the beginning and 102.7MB in the end (delta: -23.4MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * TraceAbstraction took 69060.00ms. Allocated memory was 146.8MB in the beginning and 662.7MB in the end (delta: 515.9MB). Free memory was 101.7MB in the beginning and 409.7MB in the end (delta: -308.0MB). Peak memory consumption was 392.4MB. Max. memory is 16.1GB. * Witness Printer took 142.57ms. Allocated memory is still 662.7MB. Free memory was 409.7MB in the beginning and 401.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. 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,"wsllib_check.i","") [49] - GenericResultAtLocation [Line: 58]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [58] - GenericResultAtLocation [Line: 96]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [96] - GenericResultAtLocation [Line: 165]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [165] - GenericResultAtLocation [Line: 398]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [398] - GenericResultAtLocation [Line: 502]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [502] - GenericResultAtLocation [Line: 536]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [536] - GenericResultAtLocation [Line: 902]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [902] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 54]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 42.7s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 12.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2604 SdHoareTripleChecker+Valid, 5.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2579 mSDsluCounter, 2736 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1966 mSDsCounter, 1414 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4870 IncrementalHoareTripleChecker+Invalid, 6284 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1414 mSolverCounterUnsat, 770 mSDtfsCounter, 4870 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 735 GetRequests, 455 SyntacticMatches, 20 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9872 ImplicationChecksByTransitivity, 20.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=562occurred in iteration=11, InterpolantAutomatonStates: 192, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 988 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 755 NumberOfCodeBlocks, 755 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 867 ConstructedInterpolants, 0 QuantifiedInterpolants, 2634 SizeOfPredicates, 13 NumberOfNonLiveVariables, 825 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 17 InterpolantComputations, 10 PerfectInterpolantSequences, 243/304 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 7.1s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 48, DAG_INTERPRETER_EARLY_EXITS: 3, TOOLS_POST_APPLICATIONS: 57, TOOLS_POST_TIME: 3.3s, TOOLS_POST_CALL_APPLICATIONS: 27, TOOLS_POST_CALL_TIME: 2.2s, TOOLS_POST_RETURN_APPLICATIONS: 22, TOOLS_POST_RETURN_TIME: 0.8s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 106, TOOLS_QUANTIFIERELIM_TIME: 6.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.3s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 140, FLUID_YES_ANSWERS: 2, DOMAIN_JOIN_APPLICATIONS: 19, DOMAIN_JOIN_TIME: 0.6s, DOMAIN_ALPHA_APPLICATIONS: 2, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 48, DOMAIN_ISBOTTOM_TIME: 0.2s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 1.9s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.9s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 22, CALL_SUMMARIZER_CACHE_MISSES: 6, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 663, DAG_COMPRESSION_RETAINED_NODES: 139, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 110]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 111]: Loop Invariant Derived loop invariant: ((((((pumpRunning == 0) && ((methaneLevelCritical == 0) || (methaneLevelCritical == 1))) && (waterLevel <= 1)) && (1 == systemActive)) && (splverifierCounter == 0)) || ((((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel <= 2)) && (pumpRunning == 1))) - InvariantResult [Line: 914]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 179]: Location Invariant Derived location invariant: (((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && ((\old(pumpRunning) != 0) || ((pumpRunning == 0) && (\old(waterLevel) == waterLevel)))) && ((\old(pumpRunning) != 1) || ((\old(waterLevel) == waterLevel) && (pumpRunning == 1)))) && (((((1 == systemActive) && (\old(pumpRunning) == 1)) && (\old(waterLevel) <= 2)) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && (\old(waterLevel) == 2))) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && (\old(waterLevel) <= 1)))) - ProcedureContractResult [Line: 296]: Procedure Contract for deactivatePump Derived contract for procedure deactivatePump. Requires: (((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (waterLevel <= 1)) && (1 == systemActive)) && (pumpRunning == 1)) Ensures: ((((((pumpRunning == 0) && ((methaneLevelCritical == 0) || (methaneLevelCritical == 1))) && (waterLevel <= 1)) && (1 == systemActive)) && (\old(pumpRunning) == 1)) && (((((systemActive == \old(systemActive)) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 203]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: (((((pumpRunning == 0) && ((methaneLevelCritical == 0) || (methaneLevelCritical == 1))) && (waterLevel <= 1)) && (1 == systemActive)) || (((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (waterLevel <= 1)) && (1 == systemActive)) && (pumpRunning == 1))) Ensures: ((((((pumpRunning == 0) && ((methaneLevelCritical == 0) || (methaneLevelCritical == 1))) && (waterLevel <= 1)) && (1 == systemActive)) || (((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (waterLevel <= 1)) && (1 == systemActive)) && (pumpRunning == 1))) && ((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 426]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Requires: ((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (((1 == systemActive) && (pumpRunning == 1)) || ((pumpRunning == 0) && (1 == systemActive)))) && ((2 == waterLevel) || (waterLevel < 2))) Ensures: ((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (((((((pumpRunning == 0) && ((\old(methaneLevelCritical) == 0) || (\old(methaneLevelCritical) == 1))) && (waterLevel <= 1)) && (1 == systemActive)) || ((((2 == waterLevel) && ((\old(methaneLevelCritical) == 0) || (\old(methaneLevelCritical) == 1))) && (1 == systemActive)) && (pumpRunning == 1))) || ((((pumpRunning == 0) && (2 == waterLevel)) && ((\old(methaneLevelCritical) == 0) || (\old(methaneLevelCritical) == 1))) && (1 == systemActive))) || (((((\old(methaneLevelCritical) == 0) || (\old(methaneLevelCritical) == 1)) && (waterLevel <= 1)) && (1 == systemActive)) && (pumpRunning == 1)))) && (((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 438]: Procedure Contract for isMethaneLevelCritical Derived contract for procedure isMethaneLevelCritical. Requires: ((((((pumpRunning == 0) && ((methaneLevelCritical == 0) || (methaneLevelCritical == 1))) && (waterLevel <= 1)) && (1 == systemActive)) || (((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (waterLevel <= 1)) && (1 == systemActive)) && (pumpRunning == 1))) || ((((2 == waterLevel) && ((methaneLevelCritical == 0) || (methaneLevelCritical == 1))) && (1 == systemActive)) && (pumpRunning == 1))) Ensures: ((((((((pumpRunning == 0) && ((methaneLevelCritical == 0) || (methaneLevelCritical == 1))) && (waterLevel <= 1)) && (1 == systemActive)) || ((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (1 == systemActive)) && (pumpRunning == 1))) && (\result == methaneLevelCritical)) && ((2 == waterLevel) || (waterLevel < 2))) && ((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 904]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((systemActive == \old(systemActive)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 179]: Procedure Contract for timeShift Derived contract for procedure timeShift. Requires: ((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) Ensures: ((((((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (1 == systemActive)) && (\old(pumpRunning) == 0)) || (((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (1 == systemActive)) && (\old(pumpRunning) == 1)) && (\old(waterLevel) <= 2))) && (((\old(pumpRunning) != 1) || ((waterLevel <= 1) && (pumpRunning == 1))) || ((pumpRunning == 0) && (waterLevel <= 1)))) && (((((pumpRunning == 0) && (waterLevel <= 1)) && (\old(waterLevel) == waterLevel)) || (\old(pumpRunning) != 0)) || (((2 == waterLevel) && (\old(waterLevel) == 2)) && (pumpRunning == 1)))) && ((((systemActive == \old(systemActive)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 211]: Procedure Contract for processEnvironment__wrappee__highWaterSensor Derived contract for procedure processEnvironment__wrappee__highWaterSensor. Ensures: ((((((\old(pumpRunning) != 0) || ((pumpRunning == 0) && (waterLevel <= 1))) || ((2 == waterLevel) && (pumpRunning == 1))) && ((\old(pumpRunning) != 1) || (pumpRunning == 1))) && (((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (1 == systemActive)) && (\old(pumpRunning) == 0)) || (((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (waterLevel <= 1)) && (1 == systemActive)) && (\old(pumpRunning) == 1)))) && (((((systemActive == \old(systemActive)) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 414]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: ((((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (1 == systemActive)) && (waterLevel <= 2)) && (pumpRunning == 1)) || ((((pumpRunning == 0) && ((methaneLevelCritical == 0) || (methaneLevelCritical == 1))) && (1 == systemActive)) && (waterLevel <= 2))) Ensures: ((((((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (1 == systemActive)) && (pumpRunning == 1)) || (((pumpRunning == 0) && ((methaneLevelCritical == 0) || (methaneLevelCritical == 1))) && (1 == systemActive))) && (waterLevel <= 2)) && ((((long long) \old(waterLevel) + 1) == waterLevel) || ((2 <= \old(waterLevel)) && (\old(waterLevel) == waterLevel)))) && (((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 237]: Procedure Contract for processEnvironment__wrappee__lowWaterSensor Derived contract for procedure processEnvironment__wrappee__lowWaterSensor. Ensures: ((((((\old(pumpRunning) != 0) || ((pumpRunning == 0) && (waterLevel <= 1))) || ((2 == waterLevel) && (pumpRunning == 1))) && ((pumpRunning == 0) || (pumpRunning == 1))) && (((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (1 == systemActive)) && (\old(pumpRunning) == 0)) || (((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (waterLevel <= 1)) && (1 == systemActive)) && (\old(pumpRunning) == 1)))) && (((((systemActive == \old(systemActive)) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) RESULT: Ultimate proved your program to be correct! [2024-11-09 06:12:05,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21f1174c-d177-416d-aa16-766e3229e8df/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE