./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product45.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_6afa397d-e3d0-408b-86fe-8c443f4a0816/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afa397d-e3d0-408b-86fe-8c443f4a0816/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afa397d-e3d0-408b-86fe-8c443f4a0816/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afa397d-e3d0-408b-86fe-8c443f4a0816/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product45.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afa397d-e3d0-408b-86fe-8c443f4a0816/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afa397d-e3d0-408b-86fe-8c443f4a0816/bin/utaipan-verify-DbMuA5NWw2 --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 9a8ef44eebf77bb9089ba7256f54c924b643d97224560b14ff4a2b7df3dcc9e0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:36:10,620 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:36:10,727 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afa397d-e3d0-408b-86fe-8c443f4a0816/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:36:10,735 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:36:10,736 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:36:10,769 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:36:10,771 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:36:10,771 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:36:10,772 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:36:10,773 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:36:10,775 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:36:10,776 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:36:10,776 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:36:10,777 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:36:10,777 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:36:10,777 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:36:10,781 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:36:10,782 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:36:10,782 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:36:10,783 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:36:10,783 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:36:10,784 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:36:10,784 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:36:10,785 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:36:10,785 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:36:10,785 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:36:10,785 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:36:10,786 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:36:10,786 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:36:10,786 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:36:10,786 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:36:10,787 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:36:10,787 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:36:10,787 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:36:10,809 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:36:10,809 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:36:10,810 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:36:10,811 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:36:10,811 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:36:10,811 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:36:10,811 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:36:10,812 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:36:10,812 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:36:10,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:36:10,813 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:36:10,813 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:36:10,814 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:36:10,814 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_6afa397d-e3d0-408b-86fe-8c443f4a0816/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afa397d-e3d0-408b-86fe-8c443f4a0816/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a8ef44eebf77bb9089ba7256f54c924b643d97224560b14ff4a2b7df3dcc9e0 [2024-11-02 12:36:11,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:36:11,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:36:11,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:36:11,200 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:36:11,201 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:36:11,202 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afa397d-e3d0-408b-86fe-8c443f4a0816/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/product-lines/minepump_spec1_product45.cil.c Unable to find full path for "g++" [2024-11-02 12:36:13,290 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:36:13,565 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:36:13,566 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afa397d-e3d0-408b-86fe-8c443f4a0816/sv-benchmarks/c/product-lines/minepump_spec1_product45.cil.c [2024-11-02 12:36:13,594 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afa397d-e3d0-408b-86fe-8c443f4a0816/bin/utaipan-verify-DbMuA5NWw2/data/49e2ccf0b/353833a059c943dd92961c7a4cbfdcb3/FLAG45187ccd9 [2024-11-02 12:36:13,890 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afa397d-e3d0-408b-86fe-8c443f4a0816/bin/utaipan-verify-DbMuA5NWw2/data/49e2ccf0b/353833a059c943dd92961c7a4cbfdcb3 [2024-11-02 12:36:13,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:36:13,894 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:36:13,896 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:36:13,896 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:36:13,906 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:36:13,907 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:36:13" (1/1) ... [2024-11-02 12:36:13,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e4fa6e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:13, skipping insertion in model container [2024-11-02 12:36:13,911 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:36:13" (1/1) ... [2024-11-02 12:36:13,985 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:36:14,228 WARN L251 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_6afa397d-e3d0-408b-86fe-8c443f4a0816/sv-benchmarks/c/product-lines/minepump_spec1_product45.cil.c[3064,3077] [2024-11-02 12:36:14,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:36:14,383 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:36:14,396 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] [2024-11-02 12:36:14,398 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [150] [2024-11-02 12:36:14,399 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [159] [2024-11-02 12:36:14,399 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [186] [2024-11-02 12:36:14,400 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [288] [2024-11-02 12:36:14,400 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [323] [2024-11-02 12:36:14,401 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [689] [2024-11-02 12:36:14,401 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [754] [2024-11-02 12:36:14,419 WARN L251 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_6afa397d-e3d0-408b-86fe-8c443f4a0816/sv-benchmarks/c/product-lines/minepump_spec1_product45.cil.c[3064,3077] [2024-11-02 12:36:14,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:36:14,528 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:36:14,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:14 WrapperNode [2024-11-02 12:36:14,529 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:36:14,531 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:36:14,531 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:36:14,531 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:36:14,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:14" (1/1) ... [2024-11-02 12:36:14,559 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:14" (1/1) ... [2024-11-02 12:36:14,586 INFO L138 Inliner]: procedures = 54, calls = 99, calls flagged for inlining = 21, calls inlined = 18, statements flattened = 185 [2024-11-02 12:36:14,586 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:36:14,587 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:36:14,587 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:36:14,588 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:36:14,598 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:14" (1/1) ... [2024-11-02 12:36:14,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:14" (1/1) ... [2024-11-02 12:36:14,601 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:14" (1/1) ... [2024-11-02 12:36:14,603 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:14" (1/1) ... [2024-11-02 12:36:14,611 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:14" (1/1) ... [2024-11-02 12:36:14,626 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:14" (1/1) ... [2024-11-02 12:36:14,627 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:14" (1/1) ... [2024-11-02 12:36:14,629 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:14" (1/1) ... [2024-11-02 12:36:14,632 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:36:14,633 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:36:14,634 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:36:14,634 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:36:14,635 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:14" (1/1) ... [2024-11-02 12:36:14,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:36:14,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afa397d-e3d0-408b-86fe-8c443f4a0816/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:36:14,691 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afa397d-e3d0-408b-86fe-8c443f4a0816/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:36:14,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afa397d-e3d0-408b-86fe-8c443f4a0816/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:36:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:36:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-02 12:36:14,740 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-02 12:36:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-02 12:36:14,740 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-02 12:36:14,741 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-02 12:36:14,741 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-02 12:36:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2024-11-02 12:36:14,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2024-11-02 12:36:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-02 12:36:14,743 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-02 12:36:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2024-11-02 12:36:14,744 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2024-11-02 12:36:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2024-11-02 12:36:14,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2024-11-02 12:36:14,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:36:14,746 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-02 12:36:14,746 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-02 12:36:14,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:36:14,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:36:14,868 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:36:14,874 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:36:15,321 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2024-11-02 12:36:15,321 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:36:15,494 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:36:15,495 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 12:36:15,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:36:15 BoogieIcfgContainer [2024-11-02 12:36:15,496 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:36:15,500 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:36:15,500 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:36:15,504 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:36:15,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:36:13" (1/3) ... [2024-11-02 12:36:15,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37677aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:36:15, skipping insertion in model container [2024-11-02 12:36:15,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:14" (2/3) ... [2024-11-02 12:36:15,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37677aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:36:15, skipping insertion in model container [2024-11-02 12:36:15,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:36:15" (3/3) ... [2024-11-02 12:36:15,510 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product45.cil.c [2024-11-02 12:36:15,534 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:36:15,535 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:36:15,673 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:36:15,685 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;@2cc77891, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:36:15,717 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:36:15,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 47 states have internal predecessors, (54), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-02 12:36:15,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-02 12:36:15,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:15,754 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:36:15,755 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:15,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:15,768 INFO L85 PathProgramCache]: Analyzing trace with hash 444445965, now seen corresponding path program 1 times [2024-11-02 12:36:15,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:15,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902973075] [2024-11-02 12:36:15,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:15,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:16,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:36:16,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:16,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902973075] [2024-11-02 12:36:16,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902973075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:16,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:36:16,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:36:16,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502397072] [2024-11-02 12:36:16,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:16,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:36:16,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:16,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:36:16,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:36:16,096 INFO L87 Difference]: Start difference. First operand has 63 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 47 states have internal predecessors, (54), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-02 12:36:16,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:16,172 INFO L93 Difference]: Finished difference Result 124 states and 165 transitions. [2024-11-02 12:36:16,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:36:16,175 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 16 [2024-11-02 12:36:16,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:16,185 INFO L225 Difference]: With dead ends: 124 [2024-11-02 12:36:16,185 INFO L226 Difference]: Without dead ends: 58 [2024-11-02 12:36:16,189 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 [2024-11-02 12:36:16,193 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:16,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:36:16,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-02 12:36:16,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-02 12:36:16,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 43 states have internal predecessors, (46), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-02 12:36:16,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2024-11-02 12:36:16,260 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 16 [2024-11-02 12:36:16,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:16,263 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2024-11-02 12:36:16,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-02 12:36:16,263 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2024-11-02 12:36:16,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-02 12:36:16,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:16,268 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:36:16,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:36:16,269 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:16,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:16,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1134513557, now seen corresponding path program 1 times [2024-11-02 12:36:16,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:16,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153032925] [2024-11-02 12:36:16,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:16,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:36:16,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:16,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153032925] [2024-11-02 12:36:16,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153032925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:16,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:36:16,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:36:16,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029709694] [2024-11-02 12:36:16,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:16,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:36:16,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:16,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:36:16,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:36:16,456 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2024-11-02 12:36:16,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:16,510 INFO L93 Difference]: Finished difference Result 93 states and 117 transitions. [2024-11-02 12:36:16,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:36:16,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 [2024-11-02 12:36:16,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:16,514 INFO L225 Difference]: With dead ends: 93 [2024-11-02 12:36:16,514 INFO L226 Difference]: Without dead ends: 50 [2024-11-02 12:36:16,515 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 [2024-11-02 12:36:16,517 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:16,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 87 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:36:16,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-02 12:36:16,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-02 12:36:16,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 38 states have internal predecessors, (40), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-02 12:36:16,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2024-11-02 12:36:16,531 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 17 [2024-11-02 12:36:16,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:16,531 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2024-11-02 12:36:16,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2024-11-02 12:36:16,532 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2024-11-02 12:36:16,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-02 12:36:16,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:16,533 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:36:16,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:36:16,534 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:16,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:16,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1258220400, now seen corresponding path program 1 times [2024-11-02 12:36:16,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:16,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044977770] [2024-11-02 12:36:16,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:16,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:16,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:36:16,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:16,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044977770] [2024-11-02 12:36:16,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044977770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:16,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:36:16,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:36:16,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375148127] [2024-11-02 12:36:16,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:16,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:36:16,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:16,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:36:16,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:36:16,664 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2024-11-02 12:36:16,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:16,748 INFO L93 Difference]: Finished difference Result 98 states and 123 transitions. [2024-11-02 12:36:16,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:36:16,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 19 [2024-11-02 12:36:16,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:16,751 INFO L225 Difference]: With dead ends: 98 [2024-11-02 12:36:16,751 INFO L226 Difference]: Without dead ends: 50 [2024-11-02 12:36:16,752 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 [2024-11-02 12:36:16,754 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 51 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:16,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 46 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:36:16,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-02 12:36:16,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-02 12:36:16,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 38 states have internal predecessors, (39), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-02 12:36:16,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2024-11-02 12:36:16,781 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 19 [2024-11-02 12:36:16,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:16,781 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2024-11-02 12:36:16,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2024-11-02 12:36:16,781 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2024-11-02 12:36:16,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-02 12:36:16,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:16,786 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] [2024-11-02 12:36:16,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:36:16,786 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:16,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:16,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1611523863, now seen corresponding path program 1 times [2024-11-02 12:36:16,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:16,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716436761] [2024-11-02 12:36:16,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:16,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:17,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:36:17,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:17,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716436761] [2024-11-02 12:36:17,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716436761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:17,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:36:17,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:36:17,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194426476] [2024-11-02 12:36:17,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:17,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:36:17,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:17,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:36:17,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:36:17,010 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:36:17,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:17,392 INFO L93 Difference]: Finished difference Result 160 states and 194 transitions. [2024-11-02 12:36:17,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:36:17,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (4), 3 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 29 [2024-11-02 12:36:17,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:17,396 INFO L225 Difference]: With dead ends: 160 [2024-11-02 12:36:17,397 INFO L226 Difference]: Without dead ends: 112 [2024-11-02 12:36:17,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:36:17,399 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 104 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:17,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 137 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:36:17,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-02 12:36:17,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 106. [2024-11-02 12:36:17,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 76 states have internal predecessors, (84), 18 states have call successors, (18), 15 states have call predecessors, (18), 18 states have return successors, (23), 19 states have call predecessors, (23), 18 states have call successors, (23) [2024-11-02 12:36:17,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 125 transitions. [2024-11-02 12:36:17,428 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 125 transitions. Word has length 29 [2024-11-02 12:36:17,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:17,429 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 125 transitions. [2024-11-02 12:36:17,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:36:17,429 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 125 transitions. [2024-11-02 12:36:17,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-02 12:36:17,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:17,431 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] [2024-11-02 12:36:17,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:36:17,431 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:17,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:17,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1570334310, now seen corresponding path program 1 times [2024-11-02 12:36:17,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:17,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935537509] [2024-11-02 12:36:17,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:17,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:17,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:36:17,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:17,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935537509] [2024-11-02 12:36:17,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935537509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:17,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:36:17,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:36:17,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200063146] [2024-11-02 12:36:17,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:17,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:36:17,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:17,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:36:17,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:36:17,555 INFO L87 Difference]: Start difference. First operand 106 states and 125 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-02 12:36:17,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:17,778 INFO L93 Difference]: Finished difference Result 110 states and 127 transitions. [2024-11-02 12:36:17,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:36:17,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-11-02 12:36:17,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:17,782 INFO L225 Difference]: With dead ends: 110 [2024-11-02 12:36:17,782 INFO L226 Difference]: Without dead ends: 108 [2024-11-02 12:36:17,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:36:17,783 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 61 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:17,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 124 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:36:17,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-02 12:36:17,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2024-11-02 12:36:17,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 76 states have internal predecessors, (82), 18 states have call successors, (18), 15 states have call predecessors, (18), 18 states have return successors, (23), 19 states have call predecessors, (23), 18 states have call successors, (23) [2024-11-02 12:36:17,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2024-11-02 12:36:17,816 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 30 [2024-11-02 12:36:17,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:17,816 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2024-11-02 12:36:17,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-02 12:36:17,821 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2024-11-02 12:36:17,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-02 12:36:17,822 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:17,822 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, 1, 1, 1, 1, 1] [2024-11-02 12:36:17,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:36:17,822 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:17,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:17,823 INFO L85 PathProgramCache]: Analyzing trace with hash -11738944, now seen corresponding path program 1 times [2024-11-02 12:36:17,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:17,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302713949] [2024-11-02 12:36:17,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:17,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:18,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:36:18,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:18,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302713949] [2024-11-02 12:36:18,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302713949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:18,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:36:18,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:36:18,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853686978] [2024-11-02 12:36:18,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:18,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:36:18,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:18,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:36:18,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:36:18,140 INFO L87 Difference]: Start difference. First operand 106 states and 123 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:36:18,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:18,410 INFO L93 Difference]: Finished difference Result 270 states and 318 transitions. [2024-11-02 12:36:18,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:36:18,411 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35 [2024-11-02 12:36:18,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:18,417 INFO L225 Difference]: With dead ends: 270 [2024-11-02 12:36:18,417 INFO L226 Difference]: Without dead ends: 166 [2024-11-02 12:36:18,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:36:18,419 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 62 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:18,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 222 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:36:18,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-02 12:36:18,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 140. [2024-11-02 12:36:18,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 92 states have (on average 1.173913043478261) internal successors, (108), 100 states have internal predecessors, (108), 23 states have call successors, (23), 21 states have call predecessors, (23), 24 states have return successors, (28), 24 states have call predecessors, (28), 23 states have call successors, (28) [2024-11-02 12:36:18,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 159 transitions. [2024-11-02 12:36:18,466 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 159 transitions. Word has length 35 [2024-11-02 12:36:18,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:18,471 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 159 transitions. [2024-11-02 12:36:18,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:36:18,471 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 159 transitions. [2024-11-02 12:36:18,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-02 12:36:18,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:18,472 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:36:18,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:36:18,473 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:18,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:18,473 INFO L85 PathProgramCache]: Analyzing trace with hash -7553610, now seen corresponding path program 1 times [2024-11-02 12:36:18,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:18,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653311569] [2024-11-02 12:36:18,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:18,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:18,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:36:18,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:18,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653311569] [2024-11-02 12:36:18,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653311569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:18,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:36:18,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:36:18,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971565634] [2024-11-02 12:36:18,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:18,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:36:18,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:18,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:36:18,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:36:18,626 INFO L87 Difference]: Start difference. First operand 140 states and 159 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:36:18,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:18,843 INFO L93 Difference]: Finished difference Result 406 states and 472 transitions. [2024-11-02 12:36:18,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:36:18,843 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2024-11-02 12:36:18,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:18,846 INFO L225 Difference]: With dead ends: 406 [2024-11-02 12:36:18,846 INFO L226 Difference]: Without dead ends: 268 [2024-11-02 12:36:18,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:36:18,851 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 37 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:18,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 201 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:36:18,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-02 12:36:18,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 262. [2024-11-02 12:36:18,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 173 states have (on average 1.1445086705202312) internal successors, (198), 185 states have internal predecessors, (198), 43 states have call successors, (43), 39 states have call predecessors, (43), 45 states have return successors, (53), 45 states have call predecessors, (53), 43 states have call successors, (53) [2024-11-02 12:36:18,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 294 transitions. [2024-11-02 12:36:18,896 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 294 transitions. Word has length 38 [2024-11-02 12:36:18,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:18,897 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 294 transitions. [2024-11-02 12:36:18,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:36:18,897 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 294 transitions. [2024-11-02 12:36:18,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-02 12:36:18,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:18,899 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:36:18,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:36:18,900 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:18,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:18,900 INFO L85 PathProgramCache]: Analyzing trace with hash 40079251, now seen corresponding path program 1 times [2024-11-02 12:36:18,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:18,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199381639] [2024-11-02 12:36:18,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:18,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:19,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:36:19,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:19,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199381639] [2024-11-02 12:36:19,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199381639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:19,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:36:19,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-02 12:36:19,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51667414] [2024-11-02 12:36:19,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:19,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-02 12:36:19,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:19,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-02 12:36:19,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-02 12:36:19,466 INFO L87 Difference]: Start difference. First operand 262 states and 294 transitions. Second operand has 15 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 5 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-02 12:36:21,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:21,160 INFO L93 Difference]: Finished difference Result 439 states and 512 transitions. [2024-11-02 12:36:21,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-02 12:36:21,161 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 5 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 41 [2024-11-02 12:36:21,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:21,163 INFO L225 Difference]: With dead ends: 439 [2024-11-02 12:36:21,164 INFO L226 Difference]: Without dead ends: 333 [2024-11-02 12:36:21,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=457, Invalid=1435, Unknown=0, NotChecked=0, Total=1892 [2024-11-02 12:36:21,166 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 415 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:21,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 230 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 12:36:21,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-02 12:36:21,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 306. [2024-11-02 12:36:21,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 202 states have (on average 1.1485148514851484) internal successors, (232), 216 states have internal predecessors, (232), 51 states have call successors, (51), 45 states have call predecessors, (51), 52 states have return successors, (64), 53 states have call predecessors, (64), 51 states have call successors, (64) [2024-11-02 12:36:21,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 347 transitions. [2024-11-02 12:36:21,240 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 347 transitions. Word has length 41 [2024-11-02 12:36:21,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:21,241 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 347 transitions. [2024-11-02 12:36:21,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 5 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-02 12:36:21,241 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 347 transitions. [2024-11-02 12:36:21,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-02 12:36:21,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:21,248 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:36:21,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 12:36:21,250 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:21,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:21,251 INFO L85 PathProgramCache]: Analyzing trace with hash 288309338, now seen corresponding path program 1 times [2024-11-02 12:36:21,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:21,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381289851] [2024-11-02 12:36:21,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:21,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 12:36:21,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:21,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381289851] [2024-11-02 12:36:21,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381289851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:21,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:36:21,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-02 12:36:21,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390992112] [2024-11-02 12:36:21,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:21,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-02 12:36:21,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:21,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-02 12:36:21,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-02 12:36:21,460 INFO L87 Difference]: Start difference. First operand 306 states and 347 transitions. Second operand has 10 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-02 12:36:21,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:21,787 INFO L93 Difference]: Finished difference Result 632 states and 737 transitions. [2024-11-02 12:36:21,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-02 12:36:21,788 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) Word has length 77 [2024-11-02 12:36:21,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:21,789 INFO L225 Difference]: With dead ends: 632 [2024-11-02 12:36:21,789 INFO L226 Difference]: Without dead ends: 0 [2024-11-02 12:36:21,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-02 12:36:21,791 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 46 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:21,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 250 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:36:21,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-02 12:36:21,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-02 12:36:21,792 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) [2024-11-02 12:36:21,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-02 12:36:21,793 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2024-11-02 12:36:21,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:21,793 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-02 12:36:21,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-02 12:36:21,793 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-02 12:36:21,793 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-02 12:36:21,796 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-02 12:36:21,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-02 12:36:21,798 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:36:21,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-02 12:36:25,547 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:36:25,599 WARN L156 FloydHoareUtils]: Requires clause for changeMethaneLevel contained old-variable. Original clause: (let ((.cse1 (= |old(~methaneLevelCritical~0)| 0)) (.cse0 (= ~methaneLevelCritical~0 0))) (and (or .cse0 (= ~methaneLevelCritical~0 1)) (or .cse1 (= |old(~methaneLevelCritical~0)| 1)) (= 1 ~systemActive~0) (or (not .cse1) .cse0))) Eliminated clause: (let ((.cse0 (= ~methaneLevelCritical~0 0))) (and (or .cse0 (= ~methaneLevelCritical~0 1)) (= 1 ~systemActive~0) (exists ((|old(~methaneLevelCritical~0)| Int)) (let ((.cse1 (= |old(~methaneLevelCritical~0)| 0))) (and (or .cse1 (= |old(~methaneLevelCritical~0)| 1)) (or (not .cse1) .cse0)))))) [2024-11-02 12:36:25,604 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-02 12:36:25,616 WARN L156 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1)) (= 1 ~systemActive~0) (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) (= ~waterLevel~0 1))) Eliminated clause: (and (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1)) (= 1 ~systemActive~0)) [2024-11-02 12:36:25,640 WARN L156 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__methaneQuery contained old-variable. Original clause: (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (let ((.cse0 (= 1 ~systemActive~0))) (or (and (= ~methaneLevelCritical~0 0) .cse0) (and .cse0 (= |old(~pumpRunning~0)| 0) (= ~methaneLevelCritical~0 1))))) Eliminated clause: (let ((.cse0 (= 1 ~systemActive~0))) (or (and (= ~pumpRunning~0 0) .cse0 (= ~methaneLevelCritical~0 1)) (and (= ~methaneLevelCritical~0 0) .cse0))) [2024-11-02 12:36:25,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:36:25 BoogieIcfgContainer [2024-11-02 12:36:25,664 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:36:25,665 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:36:25,665 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:36:25,665 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:36:25,666 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:36:15" (3/4) ... [2024-11-02 12:36:25,668 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-02 12:36:25,672 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-02 12:36:25,672 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-02 12:36:25,672 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-02 12:36:25,672 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-02 12:36:25,672 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2024-11-02 12:36:25,673 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-02 12:36:25,673 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2024-11-02 12:36:25,673 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2024-11-02 12:36:25,682 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 44 nodes and edges [2024-11-02 12:36:25,682 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-02 12:36:25,683 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-02 12:36:25,683 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-02 12:36:25,684 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-02 12:36:25,712 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((pumpRunning == \old(pumpRunning)) && ((methaneLevelCritical == 0) || (methaneLevelCritical == 1))) && (1 == systemActive)) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) [2024-11-02 12:36:25,750 WARN L140 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((pumpRunning == \old(pumpRunning)) && ((methaneLevelCritical == 0) || (methaneLevelCritical == 1))) && (1 == systemActive)) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) [2024-11-02 12:36:25,818 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afa397d-e3d0-408b-86fe-8c443f4a0816/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 12:36:25,818 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afa397d-e3d0-408b-86fe-8c443f4a0816/bin/utaipan-verify-DbMuA5NWw2/witness.yml [2024-11-02 12:36:25,818 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:36:25,819 INFO L158 Benchmark]: Toolchain (without parser) took 11925.02ms. Allocated memory was 163.6MB in the beginning and 203.4MB in the end (delta: 39.8MB). Free memory was 133.1MB in the beginning and 161.4MB in the end (delta: -28.2MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2024-11-02 12:36:25,819 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 125.8MB. Free memory is still 99.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:36:25,820 INFO L158 Benchmark]: CACSL2BoogieTranslator took 633.90ms. Allocated memory is still 163.6MB. Free memory was 132.6MB in the beginning and 111.6MB in the end (delta: 21.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-02 12:36:25,820 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.74ms. Allocated memory is still 163.6MB. Free memory was 111.6MB in the beginning and 109.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:36:25,820 INFO L158 Benchmark]: Boogie Preprocessor took 45.30ms. Allocated memory is still 163.6MB. Free memory was 109.6MB in the beginning and 108.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:36:25,820 INFO L158 Benchmark]: RCFGBuilder took 862.50ms. Allocated memory is still 163.6MB. Free memory was 108.0MB in the beginning and 80.2MB in the end (delta: 27.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-02 12:36:25,821 INFO L158 Benchmark]: TraceAbstraction took 10164.61ms. Allocated memory was 163.6MB in the beginning and 203.4MB in the end (delta: 39.8MB). Free memory was 79.7MB in the beginning and 168.7MB in the end (delta: -89.0MB). Peak memory consumption was 71.9MB. Max. memory is 16.1GB. [2024-11-02 12:36:25,821 INFO L158 Benchmark]: Witness Printer took 153.79ms. Allocated memory is still 203.4MB. Free memory was 168.7MB in the beginning and 161.4MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-02 12:36:25,825 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 125.8MB. Free memory is still 99.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 633.90ms. Allocated memory is still 163.6MB. Free memory was 132.6MB in the beginning and 111.6MB in the end (delta: 21.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.74ms. Allocated memory is still 163.6MB. Free memory was 111.6MB in the beginning and 109.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.30ms. Allocated memory is still 163.6MB. Free memory was 109.6MB in the beginning and 108.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 862.50ms. Allocated memory is still 163.6MB. Free memory was 108.0MB in the beginning and 80.2MB in the end (delta: 27.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 10164.61ms. Allocated memory was 163.6MB in the beginning and 203.4MB in the end (delta: 39.8MB). Free memory was 79.7MB in the beginning and 168.7MB in the end (delta: -89.0MB). Peak memory consumption was 71.9MB. Max. memory is 16.1GB. * Witness Printer took 153.79ms. Allocated memory is still 203.4MB. Free memory was 168.7MB in the beginning and 161.4MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] - GenericResultAtLocation [Line: 150]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [150] - GenericResultAtLocation [Line: 159]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [159] - GenericResultAtLocation [Line: 186]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [186] - GenericResultAtLocation [Line: 288]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [288] - GenericResultAtLocation [Line: 323]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [323] - GenericResultAtLocation [Line: 689]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [689] - GenericResultAtLocation [Line: 754]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [754] - 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: 155]: 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 9 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.2s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 806 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 783 mSDsluCounter, 1359 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 917 mSDsCounter, 363 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1265 IncrementalHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 363 mSolverCounterUnsat, 442 mSDtfsCounter, 1265 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=306occurred in iteration=8, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 67 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 302 NumberOfCodeBlocks, 302 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 293 ConstructedInterpolants, 0 QuantifiedInterpolants, 707 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 41/41 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: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 699]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 700]: Loop Invariant Derived loop invariant: (((((pumpRunning == 0) && (1 == systemActive)) && (methaneLevelCritical == 1)) && (splverifierCounter == 0)) || (((methaneLevelCritical == 0) && (1 == systemActive)) && (splverifierCounter == 0))) - InvariantResult [Line: 199]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 760]: Location Invariant Derived location invariant: ((((pumpRunning == \old(pumpRunning)) && ((methaneLevelCritical == 0) || (methaneLevelCritical == 1))) && (1 == systemActive)) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) - ProcedureContractResult [Line: 784]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: ((((pumpRunning == 0) && (1 == systemActive)) && (methaneLevelCritical == 1)) || ((methaneLevelCritical == 0) && (1 == systemActive))) Ensures: (((((pumpRunning == 0) && (1 == systemActive)) && (methaneLevelCritical == 1)) || ((methaneLevelCritical == 0) && (1 == systemActive))) && ((((((waterLevel == \old(waterLevel)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 83]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Requires: (((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (1 == systemActive)) Ensures: (((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && ((\old(methaneLevelCritical) == 0) || (\old(methaneLevelCritical) == 1))) && (1 == systemActive)) && (((((waterLevel == \old(waterLevel)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 760]: Procedure Contract for timeShift Derived contract for procedure timeShift. Requires: (((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (1 == systemActive)) Ensures: ((((((((waterLevel != 1) || (pumpRunning == \old(pumpRunning))) || (methaneLevelCritical != 0)) && ((methaneLevelCritical == 0) || (methaneLevelCritical == 1))) && (1 == systemActive)) && ((pumpRunning == 0) || (methaneLevelCritical == 0))) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) && ((((methaneLevelCritical == \old(methaneLevelCritical)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 189]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((methaneLevelCritical == \old(methaneLevelCritical)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 95]: Procedure Contract for isMethaneLevelCritical Derived contract for procedure isMethaneLevelCritical. Requires: (((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (1 == systemActive)) Ensures: (((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (1 == systemActive)) && (\result == methaneLevelCritical)) && ((((((waterLevel == \old(waterLevel)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 71]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: ((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (1 == systemActive)) && ((pumpRunning == 0) || (methaneLevelCritical == 0))) Ensures: (((((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && (1 == systemActive)) && ((pumpRunning == 0) || (methaneLevelCritical == 0))) && (((((methaneLevelCritical == \old(methaneLevelCritical)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 792]: Procedure Contract for processEnvironment__wrappee__methaneQuery Derived contract for procedure processEnvironment__wrappee__methaneQuery. Requires: ((((pumpRunning == 0) && (1 == systemActive)) && (methaneLevelCritical == 1)) || ((methaneLevelCritical == 0) && (1 == systemActive))) Ensures: (((((((waterLevel != 1) || (\old(pumpRunning) != 0)) || (pumpRunning == 0)) && (((methaneLevelCritical == 0) && (1 == systemActive)) || ((1 == systemActive) && (methaneLevelCritical == 1)))) && ((pumpRunning == 0) || (methaneLevelCritical == 0))) && ((pumpRunning == \old(pumpRunning)) || (\old(pumpRunning) == 0))) && (((((waterLevel == \old(waterLevel)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 876]: Procedure Contract for isMethaneAlarm Derived contract for procedure isMethaneAlarm. Requires: ((((waterLevel != 1) && ((methaneLevelCritical == 0) || (methaneLevelCritical == 1))) && (1 == systemActive)) || (((pumpRunning != 0) && ((methaneLevelCritical == 0) || (methaneLevelCritical == 1))) && (1 == systemActive))) Ensures: ((((((waterLevel != 1) && ((methaneLevelCritical == 0) || (methaneLevelCritical == 1))) && (1 == systemActive)) || (((pumpRunning != 0) && ((methaneLevelCritical == 0) || (methaneLevelCritical == 1))) && (1 == systemActive))) && (\result == methaneLevelCritical)) && ((((((waterLevel == \old(waterLevel)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) RESULT: Ultimate proved your program to be correct! [2024-11-02 12:36:25,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6afa397d-e3d0-408b-86fe-8c443f4a0816/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE