./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/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_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/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_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/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 aba011a2dee79947f4cca7910fc4583b21e1f3cb9acd1affa050aa7677352666 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:26:20,275 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:26:20,389 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:26:20,400 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:26:20,401 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:26:20,441 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:26:20,444 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:26:20,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:26:20,446 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:26:20,447 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:26:20,448 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:26:20,448 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:26:20,449 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:26:20,450 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:26:20,453 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:26:20,454 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:26:20,454 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:26:20,454 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:26:20,455 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:26:20,456 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:26:20,456 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:26:20,461 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:26:20,461 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:26:20,462 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:26:20,462 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:26:20,463 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:26:20,463 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:26:20,463 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:26:20,464 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:26:20,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:26:20,466 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:26:20,467 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:26:20,468 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:26:20,469 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:26:20,469 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:26:20,470 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:26:20,470 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:26:20,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:26:20,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:26:20,471 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:26:20,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:26:20,472 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:26:20,473 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:26:20,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:26:20,473 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:26:20,474 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:26:20,474 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:26:20,475 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_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aba011a2dee79947f4cca7910fc4583b21e1f3cb9acd1affa050aa7677352666 [2024-11-02 12:26:20,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:26:20,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:26:20,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:26:20,853 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:26:20,854 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:26:20,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c Unable to find full path for "g++" [2024-11-02 12:26:22,968 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:26:23,222 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:26:23,223 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c [2024-11-02 12:26:23,245 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/data/449f16c57/7f01d0bdbb9946d18428970d9c430933/FLAGa1a05a9f0 [2024-11-02 12:26:23,558 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/data/449f16c57/7f01d0bdbb9946d18428970d9c430933 [2024-11-02 12:26:23,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:26:23,561 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:26:23,563 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:26:23,563 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:26:23,570 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:26:23,573 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:26:23" (1/1) ... [2024-11-02 12:26:23,574 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7425c9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:23, skipping insertion in model container [2024-11-02 12:26:23,574 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:26:23" (1/1) ... [2024-11-02 12:26:23,633 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:26:23,842 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_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c[1605,1618] [2024-11-02 12:26:24,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:26:24,062 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:26:24,073 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] [2024-11-02 12:26:24,075 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [58] [2024-11-02 12:26:24,075 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [96] [2024-11-02 12:26:24,075 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [199] [2024-11-02 12:26:24,075 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [308] [2024-11-02 12:26:24,076 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [674] [2024-11-02 12:26:24,076 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [724] [2024-11-02 12:26:24,076 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [789] [2024-11-02 12:26:24,082 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_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c[1605,1618] [2024-11-02 12:26:24,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:26:24,235 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:26:24,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:24 WrapperNode [2024-11-02 12:26:24,236 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:26:24,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:26:24,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:26:24,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:26:24,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:24" (1/1) ... [2024-11-02 12:26:24,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:24" (1/1) ... [2024-11-02 12:26:24,306 INFO L138 Inliner]: procedures = 58, calls = 103, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 232 [2024-11-02 12:26:24,307 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:26:24,307 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:26:24,310 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:26:24,310 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:26:24,320 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:24" (1/1) ... [2024-11-02 12:26:24,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:24" (1/1) ... [2024-11-02 12:26:24,323 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:24" (1/1) ... [2024-11-02 12:26:24,323 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:24" (1/1) ... [2024-11-02 12:26:24,332 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:24" (1/1) ... [2024-11-02 12:26:24,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:24" (1/1) ... [2024-11-02 12:26:24,345 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:24" (1/1) ... [2024-11-02 12:26:24,347 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:24" (1/1) ... [2024-11-02 12:26:24,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:26:24,355 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:26:24,355 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:26:24,355 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:26:24,360 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:24" (1/1) ... [2024-11-02 12:26:24,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:26:24,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:26:24,412 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:26:24,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:26:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:26:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-02 12:26:24,445 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-02 12:26:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-02 12:26:24,449 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-02 12:26:24,449 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-02 12:26:24,450 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-02 12:26:24,450 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2024-11-02 12:26:24,450 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2024-11-02 12:26:24,450 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-02 12:26:24,450 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-02 12:26:24,450 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2024-11-02 12:26:24,450 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2024-11-02 12:26:24,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:26:24,451 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-02 12:26:24,451 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-02 12:26:24,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:26:24,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:26:24,552 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:26:24,554 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:26:25,021 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-02 12:26:25,021 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:26:25,247 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:26:25,250 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 12:26:25,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:26:25 BoogieIcfgContainer [2024-11-02 12:26:25,251 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:26:25,255 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:26:25,256 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:26:25,259 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:26:25,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:26:23" (1/3) ... [2024-11-02 12:26:25,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d05a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:26:25, skipping insertion in model container [2024-11-02 12:26:25,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:26:24" (2/3) ... [2024-11-02 12:26:25,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d05a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:26:25, skipping insertion in model container [2024-11-02 12:26:25,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:26:25" (3/3) ... [2024-11-02 12:26:25,263 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product57.cil.c [2024-11-02 12:26:25,285 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:26:25,285 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:26:25,399 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:26:25,409 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;@1f4a1a16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:26:25,409 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:26:25,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-02 12:26:25,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-02 12:26:25,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:25,435 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] [2024-11-02 12:26:25,436 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:25,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:25,446 INFO L85 PathProgramCache]: Analyzing trace with hash -629320208, now seen corresponding path program 1 times [2024-11-02 12:26:25,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:25,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248776810] [2024-11-02 12:26:25,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:25,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:25,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:26:25,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:25,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248776810] [2024-11-02 12:26:25,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248776810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:25,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:25,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:26:25,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503779011] [2024-11-02 12:26:25,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:25,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:26:25,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:25,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:26:25,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:26:25,746 INFO L87 Difference]: Start difference. First operand has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:26:25,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:25,826 INFO L93 Difference]: Finished difference Result 114 states and 155 transitions. [2024-11-02 12:26:25,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:26:25,830 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-11-02 12:26:25,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:25,841 INFO L225 Difference]: With dead ends: 114 [2024-11-02 12:26:25,842 INFO L226 Difference]: Without dead ends: 53 [2024-11-02 12:26:25,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:26:25,854 INFO L432 NwaCegarLoop]: 57 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, 57 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:25,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:26:25,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-02 12:26:25,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-02 12:26:25,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 41 states have internal predecessors, (45), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-02 12:26:25,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2024-11-02 12:26:25,921 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 21 [2024-11-02 12:26:25,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:25,922 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2024-11-02 12:26:25,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:26:25,923 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2024-11-02 12:26:25,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-02 12:26:25,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:25,926 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] [2024-11-02 12:26:25,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:26:25,927 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:25,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:25,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1703269633, now seen corresponding path program 1 times [2024-11-02 12:26:25,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:25,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691372341] [2024-11-02 12:26:25,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:25,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:26:26,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:26,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691372341] [2024-11-02 12:26:26,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691372341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:26,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:26,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:26:26,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561717004] [2024-11-02 12:26:26,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:26,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:26:26,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:26,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:26:26,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:26:26,063 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:26:26,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:26,121 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2024-11-02 12:26:26,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:26:26,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-11-02 12:26:26,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:26,124 INFO L225 Difference]: With dead ends: 83 [2024-11-02 12:26:26,124 INFO L226 Difference]: Without dead ends: 45 [2024-11-02 12:26:26,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:26:26,126 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:26,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 77 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:26:26,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-02 12:26:26,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-02 12:26:26,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 36 states have internal predecessors, (39), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-02 12:26:26,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-11-02 12:26:26,136 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 22 [2024-11-02 12:26:26,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:26,136 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-11-02 12:26:26,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:26:26,137 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-11-02 12:26:26,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-02 12:26:26,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:26,138 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] [2024-11-02 12:26:26,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:26:26,139 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:26,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:26,140 INFO L85 PathProgramCache]: Analyzing trace with hash 332325953, now seen corresponding path program 1 times [2024-11-02 12:26:26,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:26,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121189141] [2024-11-02 12:26:26,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:26,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:26,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:26:26,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:26,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121189141] [2024-11-02 12:26:26,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121189141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:26,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:26,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:26:26,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349432065] [2024-11-02 12:26:26,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:26,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:26:26,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:26,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:26:26,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:26:26,267 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:26:26,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:26,313 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2024-11-02 12:26:26,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:26:26,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-02 12:26:26,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:26,320 INFO L225 Difference]: With dead ends: 88 [2024-11-02 12:26:26,320 INFO L226 Difference]: Without dead ends: 45 [2024-11-02 12:26:26,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:26:26,322 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 41 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 12:26:26,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 41 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:26:26,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-02 12:26:26,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-02 12:26:26,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 36 states have internal predecessors, (38), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-02 12:26:26,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2024-11-02 12:26:26,342 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 24 [2024-11-02 12:26:26,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:26,343 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2024-11-02 12:26:26,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:26:26,344 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2024-11-02 12:26:26,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-02 12:26:26,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:26,347 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] [2024-11-02 12:26:26,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:26:26,348 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:26,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:26,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1545401801, now seen corresponding path program 1 times [2024-11-02 12:26:26,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:26,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925478931] [2024-11-02 12:26:26,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:26,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:26:26,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:26,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925478931] [2024-11-02 12:26:26,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925478931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:26,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:26,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:26:26,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236394673] [2024-11-02 12:26:26,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:26,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:26:26,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:26,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:26:26,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:26:26,475 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:26:26,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:26,575 INFO L93 Difference]: Finished difference Result 125 states and 159 transitions. [2024-11-02 12:26:26,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:26:26,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-02 12:26:26,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:26,577 INFO L225 Difference]: With dead ends: 125 [2024-11-02 12:26:26,577 INFO L226 Difference]: Without dead ends: 82 [2024-11-02 12:26:26,578 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 12:26:26,579 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 36 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:26,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 92 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:26:26,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-02 12:26:26,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2024-11-02 12:26:26,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 60 states have internal predecessors, (67), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (18), 14 states have call predecessors, (18), 14 states have call successors, (18) [2024-11-02 12:26:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 99 transitions. [2024-11-02 12:26:26,598 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 99 transitions. Word has length 27 [2024-11-02 12:26:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:26,598 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 99 transitions. [2024-11-02 12:26:26,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:26:26,599 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 99 transitions. [2024-11-02 12:26:26,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-02 12:26:26,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:26,600 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] [2024-11-02 12:26:26,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:26:26,600 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:26,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:26,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1433384321, now seen corresponding path program 1 times [2024-11-02 12:26:26,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:26,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418045814] [2024-11-02 12:26:26,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:26,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:26:26,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:26,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418045814] [2024-11-02 12:26:26,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418045814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:26,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:26,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:26:26,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523938471] [2024-11-02 12:26:26,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:26,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:26:26,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:26,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:26:26,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:26:26,930 INFO L87 Difference]: Start difference. First operand 80 states and 99 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:26:27,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:27,141 INFO L93 Difference]: Finished difference Result 240 states and 298 transitions. [2024-11-02 12:26:27,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:26:27,142 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2024-11-02 12:26:27,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:27,145 INFO L225 Difference]: With dead ends: 240 [2024-11-02 12:26:27,145 INFO L226 Difference]: Without dead ends: 162 [2024-11-02 12:26:27,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:26:27,150 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 88 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:27,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 169 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:26:27,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-02 12:26:27,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 154. [2024-11-02 12:26:27,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 101 states have (on average 1.2475247524752475) internal successors, (126), 112 states have internal predecessors, (126), 28 states have call successors, (28), 24 states have call predecessors, (28), 24 states have return successors, (37), 26 states have call predecessors, (37), 28 states have call successors, (37) [2024-11-02 12:26:27,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 191 transitions. [2024-11-02 12:26:27,193 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 191 transitions. Word has length 32 [2024-11-02 12:26:27,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:27,196 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 191 transitions. [2024-11-02 12:26:27,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:26:27,197 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 191 transitions. [2024-11-02 12:26:27,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-02 12:26:27,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:27,198 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:26:27,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:26:27,199 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:27,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:27,199 INFO L85 PathProgramCache]: Analyzing trace with hash 35676312, now seen corresponding path program 1 times [2024-11-02 12:26:27,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:27,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127583663] [2024-11-02 12:26:27,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:27,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:27,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:26:27,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:27,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127583663] [2024-11-02 12:26:27,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127583663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:27,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:27,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-02 12:26:27,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996360905] [2024-11-02 12:26:27,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:27,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:26:27,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:27,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:26:27,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:26:27,612 INFO L87 Difference]: Start difference. First operand 154 states and 191 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:26:28,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:28,134 INFO L93 Difference]: Finished difference Result 363 states and 460 transitions. [2024-11-02 12:26:28,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:26:28,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35 [2024-11-02 12:26:28,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:28,139 INFO L225 Difference]: With dead ends: 363 [2024-11-02 12:26:28,139 INFO L226 Difference]: Without dead ends: 260 [2024-11-02 12:26:28,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-02 12:26:28,148 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 173 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:28,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 215 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:26:28,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-02 12:26:28,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 231. [2024-11-02 12:26:28,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 156 states have (on average 1.2564102564102564) internal successors, (196), 172 states have internal predecessors, (196), 39 states have call successors, (39), 30 states have call predecessors, (39), 35 states have return successors, (54), 41 states have call predecessors, (54), 39 states have call successors, (54) [2024-11-02 12:26:28,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 289 transitions. [2024-11-02 12:26:28,222 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 289 transitions. Word has length 35 [2024-11-02 12:26:28,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:28,224 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 289 transitions. [2024-11-02 12:26:28,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:26:28,225 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 289 transitions. [2024-11-02 12:26:28,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-02 12:26:28,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:28,226 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:26:28,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:26:28,226 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:28,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:28,227 INFO L85 PathProgramCache]: Analyzing trace with hash -100258362, now seen corresponding path program 1 times [2024-11-02 12:26:28,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:28,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141906367] [2024-11-02 12:26:28,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:28,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:28,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:26:28,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:28,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141906367] [2024-11-02 12:26:28,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141906367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:26:28,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:26:28,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-02 12:26:28,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378978561] [2024-11-02 12:26:28,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:26:28,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:26:28,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:28,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:26:28,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:26:28,366 INFO L87 Difference]: Start difference. First operand 231 states and 289 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 12:26:28,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:28,747 INFO L93 Difference]: Finished difference Result 475 states and 599 transitions. [2024-11-02 12:26:28,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-02 12:26:28,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2024-11-02 12:26:28,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:28,752 INFO L225 Difference]: With dead ends: 475 [2024-11-02 12:26:28,752 INFO L226 Difference]: Without dead ends: 246 [2024-11-02 12:26:28,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-02 12:26:28,758 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 55 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:28,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 200 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:26:28,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-02 12:26:28,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 236. [2024-11-02 12:26:28,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 159 states have (on average 1.220125786163522) internal successors, (194), 175 states have internal predecessors, (194), 40 states have call successors, (40), 30 states have call predecessors, (40), 36 states have return successors, (57), 42 states have call predecessors, (57), 40 states have call successors, (57) [2024-11-02 12:26:28,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 291 transitions. [2024-11-02 12:26:28,815 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 291 transitions. Word has length 35 [2024-11-02 12:26:28,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:28,816 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 291 transitions. [2024-11-02 12:26:28,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-02 12:26:28,817 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 291 transitions. [2024-11-02 12:26:28,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-02 12:26:28,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:28,819 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-02 12:26:28,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:26:28,820 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:28,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:28,820 INFO L85 PathProgramCache]: Analyzing trace with hash -735451819, now seen corresponding path program 1 times [2024-11-02 12:26:28,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:28,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263202999] [2024-11-02 12:26:28,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:28,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:29,005 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 12:26:29,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:29,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263202999] [2024-11-02 12:26:29,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263202999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:26:29,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100447043] [2024-11-02 12:26:29,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:29,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:26:29,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:26:29,010 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:26:29,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:26:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:29,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 12:26:29,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:26:29,360 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:26:29,361 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:26:29,665 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 12:26:29,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100447043] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:26:29,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [962403735] [2024-11-02 12:26:29,689 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2024-11-02 12:26:29,689 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:26:29,694 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:26:29,700 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:26:29,701 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:26:34,150 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 147 for LOIs [2024-11-02 12:26:34,364 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 36 for LOIs [2024-11-02 12:26:34,992 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 62 for LOIs [2024-11-02 12:26:35,050 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 34 for LOIs [2024-11-02 12:26:35,098 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:26:39,410 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3965#(and (<= |old(~waterLevel~0)| 2147483647) (exists ((|v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_test_#t~nondet40#1_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_test_~tmp___1~0#1_37| Int) (|v_ULTIMATE.start_test_~tmp___1~0#1_19| Int) (|v_ULTIMATE.start_test_~tmp___2~0#1_16| Int) (|v_ULTIMATE.start_test_#t~nondet40#1_20| Int)) (and (<= 0 (+ 2147483648 |v_ULTIMATE.start_test_~tmp___2~0#1_16|)) (<= |v_ULTIMATE.start_test_~tmp___2~0#1_16| 2147483647) (or (and (= |v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_test_~tmp___1~0#1_37|) (= |v_ULTIMATE.start_test_#t~nondet40#1_20| |v_ULTIMATE.start_test_#t~nondet40#1_BEFORE_CALL_9|) (not (= 0 |v_ULTIMATE.start_test_~tmp___2~0#1_16|))) (and (<= 0 (+ |v_ULTIMATE.start_test_~tmp___1~0#1_19| 2147483648)) (= 0 |v_ULTIMATE.start_test_~tmp___2~0#1_16|) (<= |v_ULTIMATE.start_test_~tmp___1~0#1_19| 2147483647))))) (= ~methaneLevelCritical~0 0) (not (= 2 ~waterLevel~0)) (<= 2 ~waterLevel~0) (= |old(~pumpRunning~0)| 0) (= |old(~waterLevel~0)| ~waterLevel~0) (= ~switchedOnBeforeTS~0 0) (not (= 0 ~systemActive~0)) (= ~pumpRunning~0 1) (= |old(~switchedOnBeforeTS~0)| 0))' at error location [2024-11-02 12:26:39,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:26:39,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:26:39,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2024-11-02 12:26:39,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892564363] [2024-11-02 12:26:39,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:26:39,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-02 12:26:39,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:39,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-02 12:26:39,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1078, Unknown=0, NotChecked=0, Total=1260 [2024-11-02 12:26:39,415 INFO L87 Difference]: Start difference. First operand 236 states and 291 transitions. Second operand has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 8 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) [2024-11-02 12:26:40,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:40,079 INFO L93 Difference]: Finished difference Result 857 states and 1102 transitions. [2024-11-02 12:26:40,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 12:26:40,080 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 8 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) Word has length 60 [2024-11-02 12:26:40,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:40,085 INFO L225 Difference]: With dead ends: 857 [2024-11-02 12:26:40,085 INFO L226 Difference]: Without dead ends: 729 [2024-11-02 12:26:40,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 150 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=240, Invalid=1400, Unknown=0, NotChecked=0, Total=1640 [2024-11-02 12:26:40,088 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 351 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:40,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 401 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:26:40,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-11-02 12:26:40,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 634. [2024-11-02 12:26:40,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 429 states have (on average 1.2121212121212122) internal successors, (520), 460 states have internal predecessors, (520), 111 states have call successors, (111), 84 states have call predecessors, (111), 93 states have return successors, (145), 108 states have call predecessors, (145), 111 states have call successors, (145) [2024-11-02 12:26:40,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 776 transitions. [2024-11-02 12:26:40,168 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 776 transitions. Word has length 60 [2024-11-02 12:26:40,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:40,168 INFO L471 AbstractCegarLoop]: Abstraction has 634 states and 776 transitions. [2024-11-02 12:26:40,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 8 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) [2024-11-02 12:26:40,169 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 776 transitions. [2024-11-02 12:26:40,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-02 12:26:40,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:40,171 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-02 12:26:40,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 12:26:40,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-02 12:26:40,376 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:40,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:40,376 INFO L85 PathProgramCache]: Analyzing trace with hash 648008802, now seen corresponding path program 1 times [2024-11-02 12:26:40,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:40,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375410282] [2024-11-02 12:26:40,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:40,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:26:40,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:40,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375410282] [2024-11-02 12:26:40,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375410282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:26:40,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242612535] [2024-11-02 12:26:40,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:40,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:26:40,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:26:40,689 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:26:40,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:26:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:40,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-02 12:26:40,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:26:40,942 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:26:40,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:26:41,075 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-02 12:26:41,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242612535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:26:41,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1244324498] [2024-11-02 12:26:41,080 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2024-11-02 12:26:41,080 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:26:41,080 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:26:41,081 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:26:41,081 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:26:43,176 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 23 for LOIs [2024-11-02 12:26:43,184 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 38 for LOIs [2024-11-02 12:26:43,642 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 61 for LOIs [2024-11-02 12:26:43,690 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 38 for LOIs [2024-11-02 12:26:43,726 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 13 for LOIs [2024-11-02 12:26:43,730 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:26:47,222 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6607#(and (exists ((|v_ULTIMATE.start_test_#t~nondet40#1_BEFORE_CALL_16| Int) (|v_ULTIMATE.start_test_~tmp___1~0#1_44| Int) (|v_ULTIMATE.start_test_~tmp___1~0#1_19| Int) (|v_ULTIMATE.start_test_~tmp___2~0#1_16| Int) (|v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_16| Int) (|v_ULTIMATE.start_test_#t~nondet40#1_23| Int)) (and (<= 0 (+ 2147483648 |v_ULTIMATE.start_test_~tmp___2~0#1_16|)) (<= |v_ULTIMATE.start_test_~tmp___2~0#1_16| 2147483647) (or (and (<= 0 (+ |v_ULTIMATE.start_test_~tmp___1~0#1_19| 2147483648)) (= 0 |v_ULTIMATE.start_test_~tmp___2~0#1_16|) (<= |v_ULTIMATE.start_test_~tmp___1~0#1_19| 2147483647)) (and (= |v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_16| |v_ULTIMATE.start_test_~tmp___1~0#1_44|) (= |v_ULTIMATE.start_test_#t~nondet40#1_23| |v_ULTIMATE.start_test_#t~nondet40#1_BEFORE_CALL_16|) (not (= 0 |v_ULTIMATE.start_test_~tmp___2~0#1_16|)))))) (= ~methaneLevelCritical~0 0) (not (= 2 ~waterLevel~0)) (= |old(~pumpRunning~0)| 0) (<= 2 |old(~waterLevel~0)|) (<= ~waterLevel~0 2147483647) (= |old(~waterLevel~0)| ~waterLevel~0) (= ~switchedOnBeforeTS~0 0) (not (= 0 ~systemActive~0)) (= ~pumpRunning~0 1))' at error location [2024-11-02 12:26:47,222 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:26:47,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:26:47,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6, 6] total 21 [2024-11-02 12:26:47,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846428773] [2024-11-02 12:26:47,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:26:47,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-02 12:26:47,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:26:47,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-02 12:26:47,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2040, Unknown=0, NotChecked=0, Total=2256 [2024-11-02 12:26:47,226 INFO L87 Difference]: Start difference. First operand 634 states and 776 transitions. Second operand has 21 states, 18 states have (on average 4.777777777777778) internal successors, (86), 19 states have internal predecessors, (86), 9 states have call successors, (20), 6 states have call predecessors, (20), 7 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2024-11-02 12:26:52,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:26:52,196 INFO L93 Difference]: Finished difference Result 2444 states and 3063 transitions. [2024-11-02 12:26:52,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-11-02 12:26:52,197 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 4.777777777777778) internal successors, (86), 19 states have internal predecessors, (86), 9 states have call successors, (20), 6 states have call predecessors, (20), 7 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) Word has length 63 [2024-11-02 12:26:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:26:52,209 INFO L225 Difference]: With dead ends: 2444 [2024-11-02 12:26:52,209 INFO L226 Difference]: Without dead ends: 1698 [2024-11-02 12:26:52,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 188 SyntacticMatches, 6 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7983 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=2120, Invalid=19342, Unknown=0, NotChecked=0, Total=21462 [2024-11-02 12:26:52,222 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 1282 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 3250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 763 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:26:52,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1291 Valid, 443 Invalid, 3250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [763 Valid, 2487 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-02 12:26:52,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2024-11-02 12:26:52,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1476. [2024-11-02 12:26:52,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 989 states have (on average 1.172901921132457) internal successors, (1160), 1068 states have internal predecessors, (1160), 251 states have call successors, (251), 213 states have call predecessors, (251), 235 states have return successors, (390), 241 states have call predecessors, (390), 251 states have call successors, (390) [2024-11-02 12:26:52,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1801 transitions. [2024-11-02 12:26:52,454 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1801 transitions. Word has length 63 [2024-11-02 12:26:52,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:26:52,454 INFO L471 AbstractCegarLoop]: Abstraction has 1476 states and 1801 transitions. [2024-11-02 12:26:52,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 4.777777777777778) internal successors, (86), 19 states have internal predecessors, (86), 9 states have call successors, (20), 6 states have call predecessors, (20), 7 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2024-11-02 12:26:52,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1801 transitions. [2024-11-02 12:26:52,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-02 12:26:52,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:26:52,458 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-02 12:26:52,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 12:26:52,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-02 12:26:52,663 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:26:52,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:26:52,663 INFO L85 PathProgramCache]: Analyzing trace with hash -915316551, now seen corresponding path program 1 times [2024-11-02 12:26:52,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:26:52,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609147593] [2024-11-02 12:26:52,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:52,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:26:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:52,851 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 12:26:52,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:26:52,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609147593] [2024-11-02 12:26:52,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609147593] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:26:52,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895808525] [2024-11-02 12:26:52,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:26:52,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:26:52,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:26:52,854 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:26:52,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d14bbe0-5bdf-4b33-a5d1-bfce8b5f07c2/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:26:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:26:52,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-02 12:26:52,955 INFO L278 TraceCheckSpWp]: Computing forward predicates...