./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/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_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/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_49bf312e-dd20-4e33-bb0e-c742904208a5/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 69f20c6619059452dea710c235d91f0e8ca980fcacc48c7e37668ab8a6397c50 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 11:23:11,076 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 11:23:11,227 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 11:23:11,236 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 11:23:11,238 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 11:23:11,299 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 11:23:11,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 11:23:11,301 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 11:23:11,302 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 11:23:11,303 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 11:23:11,305 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 11:23:11,306 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 11:23:11,307 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 11:23:11,307 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 11:23:11,307 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 11:23:11,308 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 11:23:11,308 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 11:23:11,308 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 11:23:11,310 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 11:23:11,311 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 11:23:11,315 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 11:23:11,316 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 11:23:11,316 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 11:23:11,317 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 11:23:11,317 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 11:23:11,317 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 11:23:11,318 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 11:23:11,318 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 11:23:11,318 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 11:23:11,323 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 11:23:11,323 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 11:23:11,323 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 11:23:11,324 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 11:23:11,324 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 11:23:11,324 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 11:23:11,324 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 11:23:11,325 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 11:23:11,325 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 11:23:11,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:23:11,326 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 11:23:11,326 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 11:23:11,327 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 11:23:11,327 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 11:23:11,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 11:23:11,330 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 11:23:11,330 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 11:23:11,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 11:23:11,331 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_49bf312e-dd20-4e33-bb0e-c742904208a5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69f20c6619059452dea710c235d91f0e8ca980fcacc48c7e37668ab8a6397c50 [2024-11-02 11:23:11,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 11:23:11,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 11:23:11,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 11:23:11,787 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 11:23:11,788 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 11:23:11,790 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c Unable to find full path for "g++" [2024-11-02 11:23:13,828 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 11:23:14,076 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 11:23:14,080 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c [2024-11-02 11:23:14,114 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/data/3255fb16a/1811e207c130498c9d2c9d6da6fa0e28/FLAGa6115dd5b [2024-11-02 11:23:14,131 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/data/3255fb16a/1811e207c130498c9d2c9d6da6fa0e28 [2024-11-02 11:23:14,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 11:23:14,134 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 11:23:14,136 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 11:23:14,136 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 11:23:14,143 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 11:23:14,144 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:23:14" (1/1) ... [2024-11-02 11:23:14,145 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c130ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:14, skipping insertion in model container [2024-11-02 11:23:14,146 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:23:14" (1/1) ... [2024-11-02 11:23:14,190 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 11:23:14,466 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_49bf312e-dd20-4e33-bb0e-c742904208a5/sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c[11292,11305] [2024-11-02 11:23:14,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:23:14,529 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 11:23:14,542 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [49] [2024-11-02 11:23:14,544 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [415] [2024-11-02 11:23:14,545 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [424] [2024-11-02 11:23:14,545 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [530] [2024-11-02 11:23:14,545 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [733] [2024-11-02 11:23:14,545 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [798] [2024-11-02 11:23:14,546 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [893] [2024-11-02 11:23:14,546 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [928] [2024-11-02 11:23:14,628 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_49bf312e-dd20-4e33-bb0e-c742904208a5/sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c[11292,11305] [2024-11-02 11:23:14,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:23:14,702 INFO L204 MainTranslator]: Completed translation [2024-11-02 11:23:14,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:14 WrapperNode [2024-11-02 11:23:14,703 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 11:23:14,704 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 11:23:14,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 11:23:14,705 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 11:23:14,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:14" (1/1) ... [2024-11-02 11:23:14,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:14" (1/1) ... [2024-11-02 11:23:14,771 INFO L138 Inliner]: procedures = 55, calls = 100, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 193 [2024-11-02 11:23:14,772 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 11:23:14,772 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 11:23:14,773 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 11:23:14,773 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 11:23:14,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:14" (1/1) ... [2024-11-02 11:23:14,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:14" (1/1) ... [2024-11-02 11:23:14,789 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:14" (1/1) ... [2024-11-02 11:23:14,792 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:14" (1/1) ... [2024-11-02 11:23:14,797 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:14" (1/1) ... [2024-11-02 11:23:14,801 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:14" (1/1) ... [2024-11-02 11:23:14,803 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:14" (1/1) ... [2024-11-02 11:23:14,808 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:14" (1/1) ... [2024-11-02 11:23:14,811 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 11:23:14,816 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 11:23:14,820 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 11:23:14,820 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 11:23:14,821 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:14" (1/1) ... [2024-11-02 11:23:14,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:23:14,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:23:14,862 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 11:23:14,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 11:23:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 11:23:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-02 11:23:14,911 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-02 11:23:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2024-11-02 11:23:14,912 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2024-11-02 11:23:14,912 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-02 11:23:14,912 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-02 11:23:14,913 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-02 11:23:14,913 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-02 11:23:14,913 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-02 11:23:14,915 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-02 11:23:14,915 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2024-11-02 11:23:14,915 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2024-11-02 11:23:14,915 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2024-11-02 11:23:14,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2024-11-02 11:23:14,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 11:23:14,916 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-02 11:23:14,916 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-02 11:23:14,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 11:23:14,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 11:23:15,015 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 11:23:15,017 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 11:23:15,310 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2024-11-02 11:23:15,311 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 11:23:15,476 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 11:23:15,476 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 11:23:15,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:23:15 BoogieIcfgContainer [2024-11-02 11:23:15,477 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 11:23:15,480 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 11:23:15,480 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 11:23:15,484 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 11:23:15,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:23:14" (1/3) ... [2024-11-02 11:23:15,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed9e0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:23:15, skipping insertion in model container [2024-11-02 11:23:15,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:14" (2/3) ... [2024-11-02 11:23:15,486 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed9e0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:23:15, skipping insertion in model container [2024-11-02 11:23:15,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:23:15" (3/3) ... [2024-11-02 11:23:15,488 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product45.cil.c [2024-11-02 11:23:15,508 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 11:23:15,508 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 11:23:15,580 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 11:23:15,586 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;@60e3f63e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 11:23:15,586 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 11:23:15,590 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 40 states have (on average 1.4) internal successors, (56), 48 states have internal predecessors, (56), 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 11:23:15,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-02 11:23:15,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:15,600 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 11:23:15,601 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:23:15,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:15,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1166839342, now seen corresponding path program 1 times [2024-11-02 11:23:15,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:15,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998505131] [2024-11-02 11:23:15,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:15,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:15,848 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 11:23:15,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:23:15,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998505131] [2024-11-02 11:23:15,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998505131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:23:15,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:23:15,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 11:23:15,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397731974] [2024-11-02 11:23:15,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:23:15,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 11:23:15,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:23:15,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 11:23:15,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 11:23:15,897 INFO L87 Difference]: Start difference. First operand has 64 states, 40 states have (on average 1.4) internal successors, (56), 48 states have internal predecessors, (56), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 11:23:16,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:23:16,014 INFO L93 Difference]: Finished difference Result 126 states and 169 transitions. [2024-11-02 11:23:16,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 11:23:16,017 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-02 11:23:16,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:23:16,031 INFO L225 Difference]: With dead ends: 126 [2024-11-02 11:23:16,031 INFO L226 Difference]: Without dead ends: 59 [2024-11-02 11:23:16,036 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 11:23:16,043 INFO L432 NwaCegarLoop]: 64 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, 64 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:23:16,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:23:16,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-02 11:23:16,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-02 11:23:16,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 44 states have internal predecessors, (48), 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 11:23:16,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2024-11-02 11:23:16,104 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 17 [2024-11-02 11:23:16,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:23:16,108 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2024-11-02 11:23:16,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 11:23:16,109 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2024-11-02 11:23:16,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-02 11:23:16,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:16,111 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:23:16,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 11:23:16,112 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:23:16,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:16,115 INFO L85 PathProgramCache]: Analyzing trace with hash -96225509, now seen corresponding path program 1 times [2024-11-02 11:23:16,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:16,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827102568] [2024-11-02 11:23:16,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:16,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:16,290 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 11:23:16,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:23:16,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827102568] [2024-11-02 11:23:16,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827102568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:23:16,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:23:16,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:23:16,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591553237] [2024-11-02 11:23:16,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:23:16,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:23:16,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:23:16,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:23:16,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:23:16,297 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 11:23:16,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:23:16,391 INFO L93 Difference]: Finished difference Result 95 states and 121 transitions. [2024-11-02 11:23:16,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:23:16,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-02 11:23:16,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:23:16,395 INFO L225 Difference]: With dead ends: 95 [2024-11-02 11:23:16,398 INFO L226 Difference]: Without dead ends: 51 [2024-11-02 11:23:16,399 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 11:23:16,400 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 7 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:23:16,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 91 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:23:16,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-02 11:23:16,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-02 11:23:16,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.3125) internal successors, (42), 39 states have internal predecessors, (42), 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 11:23:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2024-11-02 11:23:16,428 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 18 [2024-11-02 11:23:16,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:23:16,432 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2024-11-02 11:23:16,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 11:23:16,432 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2024-11-02 11:23:16,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-02 11:23:16,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:16,436 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:23:16,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 11:23:16,437 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:23:16,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:16,438 INFO L85 PathProgramCache]: Analyzing trace with hash -119039979, now seen corresponding path program 1 times [2024-11-02 11:23:16,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:16,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670321905] [2024-11-02 11:23:16,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:16,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:16,612 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 11:23:16,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:23:16,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670321905] [2024-11-02 11:23:16,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670321905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:23:16,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:23:16,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:23:16,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091829971] [2024-11-02 11:23:16,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:23:16,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:23:16,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:23:16,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:23:16,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:23:16,619 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 11:23:16,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:23:16,679 INFO L93 Difference]: Finished difference Result 100 states and 127 transitions. [2024-11-02 11:23:16,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:23:16,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-02 11:23:16,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:23:16,682 INFO L225 Difference]: With dead ends: 100 [2024-11-02 11:23:16,682 INFO L226 Difference]: Without dead ends: 51 [2024-11-02 11:23:16,683 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 11:23:16,685 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 11:23:16,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 48 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 11:23:16,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-02 11:23:16,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-02 11:23:16,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.28125) internal successors, (41), 39 states have internal predecessors, (41), 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 11:23:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2024-11-02 11:23:16,703 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 20 [2024-11-02 11:23:16,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:23:16,704 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2024-11-02 11:23:16,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 11:23:16,705 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2024-11-02 11:23:16,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-02 11:23:16,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:16,706 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 11:23:16,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 11:23:16,707 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:23:16,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:16,708 INFO L85 PathProgramCache]: Analyzing trace with hash -109316668, now seen corresponding path program 1 times [2024-11-02 11:23:16,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:16,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646567063] [2024-11-02 11:23:16,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:16,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:16,969 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 11:23:16,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:23:16,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646567063] [2024-11-02 11:23:16,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646567063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:23:16,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:23:16,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 11:23:16,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939036774] [2024-11-02 11:23:16,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:23:16,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 11:23:16,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:23:16,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 11:23:16,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 11:23:16,976 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 11:23:17,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:23:17,330 INFO L93 Difference]: Finished difference Result 165 states and 204 transitions. [2024-11-02 11:23:17,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 11:23:17,331 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), 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 30 [2024-11-02 11:23:17,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:23:17,333 INFO L225 Difference]: With dead ends: 165 [2024-11-02 11:23:17,333 INFO L226 Difference]: Without dead ends: 116 [2024-11-02 11:23:17,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-02 11:23:17,335 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 116 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 157 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 11:23:17,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 157 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 11:23:17,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-02 11:23:17,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 110. [2024-11-02 11:23:17,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 73 states have (on average 1.2602739726027397) internal successors, (92), 80 states have internal predecessors, (92), 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 11:23:17,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 133 transitions. [2024-11-02 11:23:17,360 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 133 transitions. Word has length 30 [2024-11-02 11:23:17,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:23:17,360 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 133 transitions. [2024-11-02 11:23:17,360 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), 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 11:23:17,361 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 133 transitions. [2024-11-02 11:23:17,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-02 11:23:17,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:17,362 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:23:17,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 11:23:17,363 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:23:17,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:17,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1491613400, now seen corresponding path program 1 times [2024-11-02 11:23:17,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:17,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148069260] [2024-11-02 11:23:17,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:17,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:17,514 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 11:23:17,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:23:17,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148069260] [2024-11-02 11:23:17,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148069260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:23:17,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:23:17,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 11:23:17,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546326087] [2024-11-02 11:23:17,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:23:17,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 11:23:17,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:23:17,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 11:23:17,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 11:23:17,519 INFO L87 Difference]: Start difference. First operand 110 states and 133 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 11:23:17,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:23:17,769 INFO L93 Difference]: Finished difference Result 218 states and 264 transitions. [2024-11-02 11:23:17,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 11:23:17,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 31 [2024-11-02 11:23:17,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:23:17,772 INFO L225 Difference]: With dead ends: 218 [2024-11-02 11:23:17,774 INFO L226 Difference]: Without dead ends: 110 [2024-11-02 11:23:17,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-02 11:23:17,777 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 67 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 11:23:17,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 132 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 11:23:17,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-02 11:23:17,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2024-11-02 11:23:17,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 71 states have (on average 1.2112676056338028) internal successors, (86), 78 states have internal predecessors, (86), 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 11:23:17,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 127 transitions. [2024-11-02 11:23:17,809 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 127 transitions. Word has length 31 [2024-11-02 11:23:17,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:23:17,809 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 127 transitions. [2024-11-02 11:23:17,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 11:23:17,813 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 127 transitions. [2024-11-02 11:23:17,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-02 11:23:17,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:17,814 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] [2024-11-02 11:23:17,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 11:23:17,815 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:23:17,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:17,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1562186421, now seen corresponding path program 1 times [2024-11-02 11:23:17,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:17,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437813714] [2024-11-02 11:23:17,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:17,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:18,276 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 11:23:18,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:23:18,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437813714] [2024-11-02 11:23:18,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437813714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:23:18,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:23:18,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-02 11:23:18,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809758034] [2024-11-02 11:23:18,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:23:18,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 11:23:18,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:23:18,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 11:23:18,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:23:18,283 INFO L87 Difference]: Start difference. First operand 108 states and 127 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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 11:23:18,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:23:18,520 INFO L93 Difference]: Finished difference Result 274 states and 326 transitions. [2024-11-02 11:23:18,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 11:23:18,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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 36 [2024-11-02 11:23:18,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:23:18,524 INFO L225 Difference]: With dead ends: 274 [2024-11-02 11:23:18,524 INFO L226 Difference]: Without dead ends: 168 [2024-11-02 11:23:18,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-02 11:23:18,527 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 121 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 11:23:18,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 149 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 11:23:18,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-02 11:23:18,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 142. [2024-11-02 11:23:18,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 94 states have (on average 1.1914893617021276) internal successors, (112), 102 states have internal predecessors, (112), 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 11:23:18,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 163 transitions. [2024-11-02 11:23:18,564 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 163 transitions. Word has length 36 [2024-11-02 11:23:18,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:23:18,564 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 163 transitions. [2024-11-02 11:23:18,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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 11:23:18,565 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 163 transitions. [2024-11-02 11:23:18,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-02 11:23:18,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:18,569 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] [2024-11-02 11:23:18,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 11:23:18,570 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:23:18,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:18,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1113926448, now seen corresponding path program 1 times [2024-11-02 11:23:18,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:18,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544866977] [2024-11-02 11:23:18,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:18,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:18,693 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 11:23:18,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:23:18,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544866977] [2024-11-02 11:23:18,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544866977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:23:18,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:23:18,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:23:18,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761097837] [2024-11-02 11:23:18,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:23:18,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:23:18,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:23:18,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:23:18,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:23:18,698 INFO L87 Difference]: Start difference. First operand 142 states and 163 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 11:23:18,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:23:18,936 INFO L93 Difference]: Finished difference Result 230 states and 272 transitions. [2024-11-02 11:23:18,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:23:18,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2024-11-02 11:23:18,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:23:18,940 INFO L225 Difference]: With dead ends: 230 [2024-11-02 11:23:18,940 INFO L226 Difference]: Without dead ends: 228 [2024-11-02 11:23:18,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:23:18,942 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 39 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 11:23:18,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 93 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 11:23:18,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-02 11:23:18,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 214. [2024-11-02 11:23:18,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 139 states have (on average 1.1942446043165467) internal successors, (166), 151 states have internal predecessors, (166), 36 states have call successors, (36), 33 states have call predecessors, (36), 38 states have return successors, (50), 37 states have call predecessors, (50), 36 states have call successors, (50) [2024-11-02 11:23:18,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 252 transitions. [2024-11-02 11:23:18,990 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 252 transitions. Word has length 39 [2024-11-02 11:23:18,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:23:18,991 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 252 transitions. [2024-11-02 11:23:18,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 11:23:18,992 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 252 transitions. [2024-11-02 11:23:18,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-02 11:23:18,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:18,999 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-02 11:23:18,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 11:23:18,999 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:23:19,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:19,000 INFO L85 PathProgramCache]: Analyzing trace with hash 237793121, now seen corresponding path program 1 times [2024-11-02 11:23:19,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:19,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759463309] [2024-11-02 11:23:19,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:19,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-02 11:23:19,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:23:19,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759463309] [2024-11-02 11:23:19,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759463309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:23:19,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:23:19,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 11:23:19,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080106970] [2024-11-02 11:23:19,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:23:19,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:23:19,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:23:19,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:23:19,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 11:23:19,154 INFO L87 Difference]: Start difference. First operand 214 states and 252 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-02 11:23:19,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:23:19,353 INFO L93 Difference]: Finished difference Result 382 states and 460 transitions. [2024-11-02 11:23:19,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 11:23:19,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2024-11-02 11:23:19,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:23:19,359 INFO L225 Difference]: With dead ends: 382 [2024-11-02 11:23:19,362 INFO L226 Difference]: Without dead ends: 202 [2024-11-02 11:23:19,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 11:23:19,364 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 35 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:23:19,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 159 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:23:19,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-02 11:23:19,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2024-11-02 11:23:19,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 133 states have (on average 1.1804511278195489) internal successors, (157), 145 states have internal predecessors, (157), 34 states have call successors, (34), 31 states have call predecessors, (34), 34 states have return successors, (46), 35 states have call predecessors, (46), 34 states have call successors, (46) [2024-11-02 11:23:19,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 237 transitions. [2024-11-02 11:23:19,429 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 237 transitions. Word has length 74 [2024-11-02 11:23:19,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:23:19,430 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 237 transitions. [2024-11-02 11:23:19,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-02 11:23:19,430 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 237 transitions. [2024-11-02 11:23:19,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-02 11:23:19,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:19,437 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 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] [2024-11-02 11:23:19,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 11:23:19,437 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:23:19,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:19,438 INFO L85 PathProgramCache]: Analyzing trace with hash -173607858, now seen corresponding path program 1 times [2024-11-02 11:23:19,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:19,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712612848] [2024-11-02 11:23:19,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:19,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-02 11:23:19,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:23:19,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712612848] [2024-11-02 11:23:19,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712612848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:23:19,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148283617] [2024-11-02 11:23:19,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:19,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:23:19,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:23:19,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:23:19,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 11:23:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:19,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-02 11:23:19,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:23:20,102 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-02 11:23:20,103 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:23:20,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148283617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:23:20,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 11:23:20,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-11-02 11:23:20,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968891607] [2024-11-02 11:23:20,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:23:20,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 11:23:20,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:23:20,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 11:23:20,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-02 11:23:20,109 INFO L87 Difference]: Start difference. First operand 202 states and 237 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-02 11:23:20,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:23:20,410 INFO L93 Difference]: Finished difference Result 545 states and 654 transitions. [2024-11-02 11:23:20,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 11:23:20,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 77 [2024-11-02 11:23:20,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:23:20,415 INFO L225 Difference]: With dead ends: 545 [2024-11-02 11:23:20,417 INFO L226 Difference]: Without dead ends: 345 [2024-11-02 11:23:20,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-02 11:23:20,419 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 21 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 11:23:20,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 167 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 11:23:20,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-02 11:23:20,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 337. [2024-11-02 11:23:20,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 224 states have (on average 1.15625) internal successors, (259), 240 states have internal predecessors, (259), 56 states have call successors, (56), 51 states have call predecessors, (56), 56 states have return successors, (74), 58 states have call predecessors, (74), 56 states have call successors, (74) [2024-11-02 11:23:20,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 389 transitions. [2024-11-02 11:23:20,499 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 389 transitions. Word has length 77 [2024-11-02 11:23:20,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:23:20,500 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 389 transitions. [2024-11-02 11:23:20,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-02 11:23:20,500 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 389 transitions. [2024-11-02 11:23:20,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-02 11:23:20,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:20,503 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 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] [2024-11-02 11:23:20,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 11:23:20,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:23:20,708 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 11:23:20,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:20,709 INFO L85 PathProgramCache]: Analyzing trace with hash -137167235, now seen corresponding path program 1 times [2024-11-02 11:23:20,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:20,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677487593] [2024-11-02 11:23:20,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:20,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:21,236 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-02 11:23:21,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:23:21,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677487593] [2024-11-02 11:23:21,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677487593] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:23:21,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460840614] [2024-11-02 11:23:21,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:21,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:23:21,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:23:21,240 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:23:21,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 11:23:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:23:21,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-02 11:23:21,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:23:21,847 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-02 11:23:21,851 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 11:23:22,481 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-02 11:23:22,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460840614] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 11:23:22,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1792731819] [2024-11-02 11:23:22,510 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2024-11-02 11:23:22,510 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 11:23:22,515 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 11:23:22,523 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 11:23:22,523 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 11:23:25,241 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 37 for LOIs [2024-11-02 11:23:25,253 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 40 for LOIs [2024-11-02 11:23:26,049 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 1 for LOIs [2024-11-02 11:23:26,102 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 1 for LOIs [2024-11-02 11:23:26,109 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 1 for LOIs [2024-11-02 11:23:26,110 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 58 for LOIs [2024-11-02 11:23:26,149 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 4 for LOIs [2024-11-02 11:23:26,151 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 11:23:31,001 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6006#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (not (= ~methaneLevelCritical~0 0)) (<= 0 (+ ~pumpRunning~0 2147483648)) (<= ~methaneLevelCritical~0 2147483647) (<= 0 (+ ~methaneLevelCritical~0 2147483648)) (not (= ~methAndRunningLastTime~0 0)))' at error location [2024-11-02 11:23:31,001 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 11:23:31,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 11:23:31,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 11] total 30 [2024-11-02 11:23:31,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56208900] [2024-11-02 11:23:31,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 11:23:31,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-02 11:23:31,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:23:31,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-02 11:23:31,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=3167, Unknown=0, NotChecked=0, Total=3422 [2024-11-02 11:23:31,005 INFO L87 Difference]: Start difference. First operand 337 states and 389 transitions. Second operand has 30 states, 21 states have (on average 5.428571428571429) internal successors, (114), 22 states have internal predecessors, (114), 9 states have call successors, (30), 8 states have call predecessors, (30), 14 states have return successors, (31), 15 states have call predecessors, (31), 9 states have call successors, (31) [2024-11-02 11:23:32,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:23:32,664 INFO L93 Difference]: Finished difference Result 664 states and 796 transitions. [2024-11-02 11:23:32,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-02 11:23:32,665 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 21 states have (on average 5.428571428571429) internal successors, (114), 22 states have internal predecessors, (114), 9 states have call successors, (30), 8 states have call predecessors, (30), 14 states have return successors, (31), 15 states have call predecessors, (31), 9 states have call successors, (31) Word has length 80 [2024-11-02 11:23:32,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:23:32,666 INFO L225 Difference]: With dead ends: 664 [2024-11-02 11:23:32,666 INFO L226 Difference]: Without dead ends: 0 [2024-11-02 11:23:32,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 194 SyntacticMatches, 5 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1658 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=534, Invalid=5318, Unknown=0, NotChecked=0, Total=5852 [2024-11-02 11:23:32,671 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 353 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-02 11:23:32,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 216 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-02 11:23:32,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-02 11:23:32,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-02 11:23:32,672 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 11:23:32,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-02 11:23:32,673 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 80 [2024-11-02 11:23:32,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:23:32,673 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-02 11:23:32,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 21 states have (on average 5.428571428571429) internal successors, (114), 22 states have internal predecessors, (114), 9 states have call successors, (30), 8 states have call predecessors, (30), 14 states have return successors, (31), 15 states have call predecessors, (31), 9 states have call successors, (31) [2024-11-02 11:23:32,674 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-02 11:23:32,677 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-02 11:23:32,679 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-02 11:23:32,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-02 11:23:32,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:23:32,883 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:23:32,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-02 11:23:37,264 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 11:23:37,324 WARN L156 FloydHoareUtils]: Requires clause for changeMethaneLevel contained old-variable. Original clause: (let ((.cse1 (= |old(~methaneLevelCritical~0)| 0)) (.cse3 (= |old(~methaneLevelCritical~0)| 1))) (and (let ((.cse0 (= ~methAndRunningLastTime~0 0)) (.cse2 (= 1 ~systemActive~0))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse2) (and (not (= ~pumpRunning~0 0)) .cse3 .cse2))) (or (not .cse1) (= ~methaneLevelCritical~0 0)) (or (= ~methaneLevelCritical~0 1) (not .cse3)))) Eliminated clause: (exists ((|old(~methaneLevelCritical~0)| Int)) (let ((.cse1 (= |old(~methaneLevelCritical~0)| 0)) (.cse3 (= |old(~methaneLevelCritical~0)| 1))) (and (let ((.cse0 (= ~methAndRunningLastTime~0 0)) (.cse2 (= 1 ~systemActive~0))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse2) (and (not (= ~pumpRunning~0 0)) .cse3 .cse2))) (or (not .cse1) (= ~methaneLevelCritical~0 0)) (or (= ~methaneLevelCritical~0 1) (not .cse3))))) [2024-11-02 11:23:37,334 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-02 11:23:37,353 WARN L156 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse0 (= |old(~methAndRunningLastTime~0)| 0)) (.cse1 (not (= |old(~pumpRunning~0)| 0)))) (and (or (not .cse0) (= ~methAndRunningLastTime~0 0)) (= ~pumpRunning~0 |old(~pumpRunning~0)|) (let ((.cse4 (= ~methaneLevelCritical~0 0)) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= ~methaneLevelCritical~0 1))) (or (and .cse1 .cse2 .cse3) (and .cse4 .cse0 .cse2) (and .cse1 .cse4 .cse2) (and .cse0 .cse2 .cse3))) (or .cse1 (not (= |old(~waterLevel~0)| 1)) (= ~waterLevel~0 1)))) Eliminated clause: (exists ((|old(~methAndRunningLastTime~0)| Int)) (let ((.cse0 (= |old(~methAndRunningLastTime~0)| 0))) (and (or (not .cse0) (= ~methAndRunningLastTime~0 0)) (let ((.cse1 (= ~methaneLevelCritical~0 0)) (.cse3 (not (= ~pumpRunning~0 0))) (.cse2 (= 1 ~systemActive~0)) (.cse4 (= ~methaneLevelCritical~0 1))) (or (and .cse1 .cse0 .cse2) (and .cse3 .cse1 .cse2) (and .cse3 .cse2 .cse4) (and .cse0 .cse2 .cse4)))))) [2024-11-02 11:23:37,374 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-02 11:23:37,392 WARN L156 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__methaneQuery contained old-variable. Original clause: (let ((.cse3 (= ~methaneLevelCritical~0 1))) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (let ((.cse2 (= ~methAndRunningLastTime~0 0)) (.cse0 (= ~methaneLevelCritical~0 0)) (.cse1 (= 1 ~systemActive~0))) (or (and (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1) (and .cse2 .cse1 .cse3) (and .cse2 .cse0 .cse1))) (or (= ~pumpRunning~0 0) (not .cse3)))) Eliminated clause: (let ((.cse3 (= ~pumpRunning~0 0)) (.cse2 (= ~methaneLevelCritical~0 1))) (and (let ((.cse0 (= ~methAndRunningLastTime~0 0)) (.cse4 (= ~methaneLevelCritical~0 0)) (.cse1 (= 1 ~systemActive~0))) (or (and .cse0 .cse1 .cse2) (and (not .cse3) .cse4 .cse1) (and .cse0 .cse4 .cse1))) (or .cse3 (not .cse2)))) [2024-11-02 11:23:37,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 11:23:37 BoogieIcfgContainer [2024-11-02 11:23:37,412 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 11:23:37,413 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 11:23:37,413 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 11:23:37,413 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 11:23:37,414 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:23:15" (3/4) ... [2024-11-02 11:23:37,421 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-02 11:23:37,429 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-02 11:23:37,429 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-02 11:23:37,430 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2024-11-02 11:23:37,430 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-02 11:23:37,430 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-02 11:23:37,430 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-02 11:23:37,431 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2024-11-02 11:23:37,431 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2024-11-02 11:23:37,443 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 45 nodes and edges [2024-11-02 11:23:37,444 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-02 11:23:37,445 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-02 11:23:37,446 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-02 11:23:37,447 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-02 11:23:37,487 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((\old(methAndRunningLastTime) != 0) || (methAndRunningLastTime == 0)) && (pumpRunning == \old(pumpRunning))) && ((((((\old(pumpRunning) != 0) && (1 == systemActive)) && (methaneLevelCritical == 1)) || (((methaneLevelCritical == 0) && (\old(methAndRunningLastTime) == 0)) && (1 == systemActive))) || (((\old(pumpRunning) != 0) && (methaneLevelCritical == 0)) && (1 == systemActive))) || (((\old(methAndRunningLastTime) == 0) && (1 == systemActive)) && (methaneLevelCritical == 1)))) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) [2024-11-02 11:23:37,549 WARN L140 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((\old(methAndRunningLastTime) != 0) || (methAndRunningLastTime == 0)) && (pumpRunning == \old(pumpRunning))) && ((((((\old(pumpRunning) != 0) && (1 == systemActive)) && (methaneLevelCritical == 1)) || (((methaneLevelCritical == 0) && (\old(methAndRunningLastTime) == 0)) && (1 == systemActive))) || (((\old(pumpRunning) != 0) && (methaneLevelCritical == 0)) && (1 == systemActive))) || (((\old(methAndRunningLastTime) == 0) && (1 == systemActive)) && (methaneLevelCritical == 1)))) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) [2024-11-02 11:23:37,620 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 11:23:37,621 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/witness.yml [2024-11-02 11:23:37,621 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 11:23:37,622 INFO L158 Benchmark]: Toolchain (without parser) took 23487.93ms. Allocated memory was 169.9MB in the beginning and 381.7MB in the end (delta: 211.8MB). Free memory was 141.8MB in the beginning and 145.6MB in the end (delta: -3.8MB). Peak memory consumption was 207.9MB. Max. memory is 16.1GB. [2024-11-02 11:23:37,623 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 121.6MB. Free memory is still 95.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 11:23:37,623 INFO L158 Benchmark]: CACSL2BoogieTranslator took 567.77ms. Allocated memory is still 169.9MB. Free memory was 141.6MB in the beginning and 123.6MB in the end (delta: 18.0MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2024-11-02 11:23:37,624 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.57ms. Allocated memory is still 169.9MB. Free memory was 123.6MB in the beginning and 121.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 11:23:37,624 INFO L158 Benchmark]: Boogie Preprocessor took 42.44ms. Allocated memory is still 169.9MB. Free memory was 121.5MB in the beginning and 119.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 11:23:37,624 INFO L158 Benchmark]: RCFGBuilder took 661.53ms. Allocated memory is still 169.9MB. Free memory was 119.4MB in the beginning and 113.8MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-02 11:23:37,625 INFO L158 Benchmark]: TraceAbstraction took 21932.12ms. Allocated memory was 169.9MB in the beginning and 381.7MB in the end (delta: 211.8MB). Free memory was 113.8MB in the beginning and 152.9MB in the end (delta: -39.2MB). Peak memory consumption was 206.8MB. Max. memory is 16.1GB. [2024-11-02 11:23:37,626 INFO L158 Benchmark]: Witness Printer took 208.55ms. Allocated memory is still 381.7MB. Free memory was 152.9MB in the beginning and 145.6MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-02 11:23:37,628 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 121.6MB. Free memory is still 95.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 567.77ms. Allocated memory is still 169.9MB. Free memory was 141.6MB in the beginning and 123.6MB in the end (delta: 18.0MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.57ms. Allocated memory is still 169.9MB. Free memory was 123.6MB in the beginning and 121.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.44ms. Allocated memory is still 169.9MB. Free memory was 121.5MB in the beginning and 119.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 661.53ms. Allocated memory is still 169.9MB. Free memory was 119.4MB in the beginning and 113.8MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 21932.12ms. Allocated memory was 169.9MB in the beginning and 381.7MB in the end (delta: 211.8MB). Free memory was 113.8MB in the beginning and 152.9MB in the end (delta: -39.2MB). Peak memory consumption was 206.8MB. Max. memory is 16.1GB. * Witness Printer took 208.55ms. Allocated memory is still 381.7MB. Free memory was 152.9MB in the beginning and 145.6MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [49] - GenericResultAtLocation [Line: 415]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [415] - GenericResultAtLocation [Line: 424]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [424] - GenericResultAtLocation [Line: 530]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [530] - GenericResultAtLocation [Line: 733]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [733] - GenericResultAtLocation [Line: 798]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [798] - GenericResultAtLocation [Line: 893]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [893] - GenericResultAtLocation [Line: 928]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [928] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 420]: 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, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.3s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 823 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 812 mSDsluCounter, 1276 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 756 mSDsCounter, 393 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1981 IncrementalHoareTripleChecker+Invalid, 2374 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 393 mSolverCounterUnsat, 520 mSDtfsCounter, 1981 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 406 GetRequests, 294 SyntacticMatches, 5 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1670 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=337occurred in iteration=9, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 56 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 579 NumberOfCodeBlocks, 579 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 646 ConstructedInterpolants, 0 QuantifiedInterpolants, 1451 SizeOfPredicates, 1 NumberOfNonLiveVariables, 564 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 207/230 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: 744]: Loop Invariant Derived loop invariant: ((((((pumpRunning != 0) && (1 == systemActive)) && (methaneLevelCritical == 1)) && (splverifierCounter == 0)) || ((((methAndRunningLastTime == 0) && (methaneLevelCritical == 0)) && (1 == systemActive)) && (splverifierCounter == 0))) || ((((methAndRunningLastTime == 0) && (1 == systemActive)) && (methaneLevelCritical == 1)) && (splverifierCounter == 0))) - InvariantResult [Line: 437]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 743]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 542]: Location Invariant Derived location invariant: (((((\old(methAndRunningLastTime) != 0) || (methAndRunningLastTime == 0)) && (pumpRunning == \old(pumpRunning))) && ((((((\old(pumpRunning) != 0) && (1 == systemActive)) && (methaneLevelCritical == 1)) || (((methaneLevelCritical == 0) && (\old(methAndRunningLastTime) == 0)) && (1 == systemActive))) || (((\old(pumpRunning) != 0) && (methaneLevelCritical == 0)) && (1 == systemActive))) || (((\old(methAndRunningLastTime) == 0) && (1 == systemActive)) && (methaneLevelCritical == 1)))) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) - ProcedureContractResult [Line: 566]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: (((((pumpRunning != 0) && (methaneLevelCritical == 0)) && (1 == systemActive)) || ((((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (1 == systemActive)) && (methaneLevelCritical == 1))) || (((methAndRunningLastTime == 0) && (methaneLevelCritical == 0)) && (1 == systemActive))) Ensures: ((((((pumpRunning != 0) && (methaneLevelCritical == 0)) && (1 == systemActive)) || ((((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (1 == systemActive)) && (methaneLevelCritical == 1))) || (((methAndRunningLastTime == 0) && (methaneLevelCritical == 0)) && (1 == systemActive))) && (((((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (methAndRunningLastTime == \old(methAndRunningLastTime)))) - ProcedureContractResult [Line: 826]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Ensures: (((((methaneLevelCritical == 0) || (\old(methaneLevelCritical) != 1)) && ((\old(methaneLevelCritical) != 0) || (methaneLevelCritical == 1))) && (((((methAndRunningLastTime == 0) && (\old(methaneLevelCritical) == 0)) && (1 == systemActive)) || (((methAndRunningLastTime == 0) && (\old(methaneLevelCritical) == 1)) && (1 == systemActive))) || (((pumpRunning != 0) && (\old(methaneLevelCritical) == 1)) && (1 == systemActive)))) && ((((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methAndRunningLastTime == \old(methAndRunningLastTime)))) - ProcedureContractResult [Line: 838]: Procedure Contract for isMethaneLevelCritical Derived contract for procedure isMethaneLevelCritical. Requires: (((methaneLevelCritical == 0) && (1 == systemActive)) || ((1 == systemActive) && (methaneLevelCritical == 1))) Ensures: (((((methaneLevelCritical != 1) || (\result == 1)) && (((methaneLevelCritical == 0) && (1 == systemActive)) || ((1 == systemActive) && (methaneLevelCritical == 1)))) && ((methaneLevelCritical != 0) || (\result == 0))) && (((((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (methAndRunningLastTime == \old(methAndRunningLastTime)))) - ProcedureContractResult [Line: 542]: Procedure Contract for timeShift Derived contract for procedure timeShift. Ensures: ((((((((((pumpRunning == \old(pumpRunning)) && (methAndRunningLastTime == 0)) || (\old(pumpRunning) == 0)) || ((pumpRunning == 0) && (methAndRunningLastTime == 0))) && (((methaneLevelCritical != 1) || ((waterLevel != 1) && (pumpRunning != 0))) || ((pumpRunning == 0) && (methAndRunningLastTime == 0)))) && (((\old(pumpRunning) == 0) || (methaneLevelCritical != 1)) || ((pumpRunning == 0) && (methAndRunningLastTime == 0)))) && ((((((\old(pumpRunning) != 0) && (1 == systemActive)) && (methaneLevelCritical == 1)) || (((methaneLevelCritical == 0) && (\old(methAndRunningLastTime) == 0)) && (\old(pumpRunning) == 0))) || (((\old(pumpRunning) != 0) && (methaneLevelCritical == 0)) && (1 == systemActive))) || (((\old(methAndRunningLastTime) == 0) && (1 == systemActive)) && (methaneLevelCritical == 1)))) && ((((\old(pumpRunning) != 0) || (methaneLevelCritical != 0)) || (((waterLevel != 1) && (methAndRunningLastTime == 0)) && (1 == systemActive))) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (1 == systemActive)))) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) && ((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (systemActive == \old(systemActive))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 427]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (systemActive == \old(systemActive))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 814]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: (((((methAndRunningLastTime == 0) && (1 == systemActive)) && (methaneLevelCritical == 1)) || (((pumpRunning != 0) && (1 == systemActive)) && (methaneLevelCritical == 1))) || (((methAndRunningLastTime == 0) && (methaneLevelCritical == 0)) && (1 == systemActive))) Ensures: ((((((methAndRunningLastTime == 0) && (1 == systemActive)) && (methaneLevelCritical == 1)) || (((pumpRunning != 0) && (1 == systemActive)) && (methaneLevelCritical == 1))) || (((methAndRunningLastTime == 0) && (methaneLevelCritical == 0)) && (1 == systemActive))) && ((((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (methAndRunningLastTime == \old(methAndRunningLastTime)))) - ProcedureContractResult [Line: 574]: Procedure Contract for processEnvironment__wrappee__methaneQuery Derived contract for procedure processEnvironment__wrappee__methaneQuery. Requires: ((((((methAndRunningLastTime == 0) && (1 == systemActive)) && (methaneLevelCritical == 1)) || (((pumpRunning != 0) && (methaneLevelCritical == 0)) && (1 == systemActive))) || (((methAndRunningLastTime == 0) && (methaneLevelCritical == 0)) && (1 == systemActive))) && ((pumpRunning == 0) || (methaneLevelCritical != 1))) Ensures: (((((((((methAndRunningLastTime == 0) && (1 == systemActive)) && (\old(pumpRunning) == 0)) && (methaneLevelCritical == 1)) || (((\old(pumpRunning) != 0) && (methaneLevelCritical == 0)) && (1 == systemActive))) || (((methAndRunningLastTime == 0) && (methaneLevelCritical == 0)) && (1 == systemActive))) && (((waterLevel != 1) || (\old(pumpRunning) != 0)) || (pumpRunning == 0))) && ((pumpRunning == \old(pumpRunning)) || (\old(pumpRunning) == 0))) && ((((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (methAndRunningLastTime == \old(methAndRunningLastTime)))) - ProcedureContractResult [Line: 658]: Procedure Contract for isMethaneAlarm Derived contract for procedure isMethaneAlarm. Requires: (((((((waterLevel != 1) && (methAndRunningLastTime == 0)) && (methaneLevelCritical == 0)) && (1 == systemActive)) || (((pumpRunning != 0) && (methaneLevelCritical == 0)) && (1 == systemActive))) || (((pumpRunning != 0) && (1 == systemActive)) && (methaneLevelCritical == 1))) || ((((waterLevel != 1) && (methAndRunningLastTime == 0)) && (1 == systemActive)) && (methaneLevelCritical == 1))) Ensures: (((((\result == 1) || (methaneLevelCritical != 1)) && (((((((waterLevel != 1) && (methAndRunningLastTime == 0)) && (methaneLevelCritical == 0)) && (1 == systemActive)) || (((pumpRunning != 0) && (methaneLevelCritical == 0)) && (1 == systemActive))) || (((pumpRunning != 0) && (1 == systemActive)) && (methaneLevelCritical == 1))) || ((((waterLevel != 1) && (methAndRunningLastTime == 0)) && (1 == systemActive)) && (methaneLevelCritical == 1)))) && ((\result == 0) || (methaneLevelCritical != 0))) && (((((((head == \old(head)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (methAndRunningLastTime == \old(methAndRunningLastTime)))) RESULT: Ultimate proved your program to be correct! [2024-11-02 11:23:37,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49bf312e-dd20-4e33-bb0e-c742904208a5/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE