./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e7a194b3d6e079d2329a0d70eaa59b34ff3d58300de8b046ef1cd7cff7f67b94 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:12:11,309 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:12:11,375 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:12:11,380 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:12:11,381 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:12:11,431 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:12:11,431 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:12:11,432 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:12:11,433 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:12:11,433 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:12:11,433 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:12:11,434 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:12:11,434 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:12:11,435 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:12:11,435 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:12:11,436 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:12:11,436 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:12:11,436 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:12:11,437 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:12:11,437 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:12:11,438 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:12:11,438 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:12:11,439 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:12:11,439 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:12:11,439 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:12:11,440 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:12:11,440 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:12:11,440 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:12:11,440 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:12:11,441 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:12:11,441 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:12:11,441 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:12:11,442 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:12:11,442 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:12:11,443 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:12:11,443 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:12:11,443 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:12:11,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:12:11,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:12:11,444 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:12:11,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:12:11,448 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:12:11,448 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:12:11,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:12:11,449 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:12:11,451 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:12:11,451 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:12:11,451 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_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7a194b3d6e079d2329a0d70eaa59b34ff3d58300de8b046ef1cd7cff7f67b94 [2024-11-09 05:12:11,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:12:11,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:12:11,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:12:11,776 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:12:11,777 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:12:11,778 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c Unable to find full path for "g++" [2024-11-09 05:12:14,276 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:12:14,523 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:12:14,524 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c [2024-11-09 05:12:14,553 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/data/5ae553440/0a521260b70a44939a0a3c1bbd18e736/FLAGa2aa4b91c [2024-11-09 05:12:14,576 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/data/5ae553440/0a521260b70a44939a0a3c1bbd18e736 [2024-11-09 05:12:14,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:12:14,581 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:12:14,582 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:12:14,583 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:12:14,589 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:12:14,589 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:12:14" (1/1) ... [2024-11-09 05:12:14,591 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dcb5136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:14, skipping insertion in model container [2024-11-09 05:12:14,591 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:12:14" (1/1) ... [2024-11-09 05:12:14,660 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:12:15,050 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c[17915,17928] [2024-11-09 05:12:15,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:12:15,079 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:12:15,092 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [49] [2024-11-09 05:12:15,095 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [415] [2024-11-09 05:12:15,095 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [653] [2024-11-09 05:12:15,095 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [691] [2024-11-09 05:12:15,096 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [759] [2024-11-09 05:12:15,096 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [810] [2024-11-09 05:12:15,096 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [907] [2024-11-09 05:12:15,097 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [916] [2024-11-09 05:12:15,197 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c[17915,17928] [2024-11-09 05:12:15,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:12:15,231 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:12:15,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:15 WrapperNode [2024-11-09 05:12:15,233 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:12:15,234 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:12:15,234 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:12:15,235 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:12:15,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:15" (1/1) ... [2024-11-09 05:12:15,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:15" (1/1) ... [2024-11-09 05:12:15,307 INFO L138 Inliner]: procedures = 58, calls = 105, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 232 [2024-11-09 05:12:15,308 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:12:15,309 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:12:15,309 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:12:15,309 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:12:15,324 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:15" (1/1) ... [2024-11-09 05:12:15,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:15" (1/1) ... [2024-11-09 05:12:15,331 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:15" (1/1) ... [2024-11-09 05:12:15,332 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:15" (1/1) ... [2024-11-09 05:12:15,341 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:15" (1/1) ... [2024-11-09 05:12:15,353 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:15" (1/1) ... [2024-11-09 05:12:15,355 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:15" (1/1) ... [2024-11-09 05:12:15,359 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:15" (1/1) ... [2024-11-09 05:12:15,367 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:12:15,368 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:12:15,368 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:12:15,369 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:12:15,370 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:15" (1/1) ... [2024-11-09 05:12:15,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:12:15,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:12:15,431 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:12:15,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:12:15,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:12:15,486 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-09 05:12:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-09 05:12:15,487 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 05:12:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 05:12:15,488 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 05:12:15,489 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 05:12:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 05:12:15,489 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 05:12:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-09 05:12:15,490 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-09 05:12:15,490 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2024-11-09 05:12:15,491 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2024-11-09 05:12:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2024-11-09 05:12:15,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2024-11-09 05:12:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2024-11-09 05:12:15,493 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2024-11-09 05:12:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:12:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-09 05:12:15,494 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-09 05:12:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:12:15,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:12:15,606 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:12:15,610 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:12:16,064 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-09 05:12:16,064 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:12:16,314 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:12:16,315 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 05:12:16,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:12:16 BoogieIcfgContainer [2024-11-09 05:12:16,315 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:12:16,318 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:12:16,319 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:12:16,323 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:12:16,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:12:14" (1/3) ... [2024-11-09 05:12:16,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286d96f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:12:16, skipping insertion in model container [2024-11-09 05:12:16,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:15" (2/3) ... [2024-11-09 05:12:16,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286d96f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:12:16, skipping insertion in model container [2024-11-09 05:12:16,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:12:16" (3/3) ... [2024-11-09 05:12:16,327 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product53.cil.c [2024-11-09 05:12:16,349 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:12:16,349 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:12:16,418 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:12:16,426 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;@562d681c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:12:16,426 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:12:16,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 52 states have internal predecessors, (60), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-09 05:12:16,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 05:12:16,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:16,445 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] [2024-11-09 05:12:16,446 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:16,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:16,453 INFO L85 PathProgramCache]: Analyzing trace with hash -668601718, now seen corresponding path program 1 times [2024-11-09 05:12:16,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:16,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016454605] [2024-11-09 05:12:16,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:16,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:16,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:12:16,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:16,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016454605] [2024-11-09 05:12:16,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016454605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:12:16,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:12:16,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:12:16,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974534664] [2024-11-09 05:12:16,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:12:16,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 05:12:16,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:16,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 05:12:16,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:12:16,789 INFO L87 Difference]: Start difference. First operand has 69 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 52 states have internal predecessors, (60), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 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) [2024-11-09 05:12:16,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:16,901 INFO L93 Difference]: Finished difference Result 136 states and 185 transitions. [2024-11-09 05:12:16,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 05:12:16,905 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 [2024-11-09 05:12:16,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:16,917 INFO L225 Difference]: With dead ends: 136 [2024-11-09 05:12:16,917 INFO L226 Difference]: Without dead ends: 64 [2024-11-09 05:12:16,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:12:16,926 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:16,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:12:16,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-09 05:12:16,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-09 05:12:16,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 48 states have internal predecessors, (52), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-09 05:12:16,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2024-11-09 05:12:16,982 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 21 [2024-11-09 05:12:16,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:16,983 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2024-11-09 05:12:16,983 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) [2024-11-09 05:12:16,983 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2024-11-09 05:12:16,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 05:12:16,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:16,986 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] [2024-11-09 05:12:16,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:12:16,987 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:16,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:16,988 INFO L85 PathProgramCache]: Analyzing trace with hash -469891969, now seen corresponding path program 1 times [2024-11-09 05:12:16,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:16,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484307132] [2024-11-09 05:12:16,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:16,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:17,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:12:17,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:17,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484307132] [2024-11-09 05:12:17,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484307132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:12:17,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:12:17,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:12:17,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360104650] [2024-11-09 05:12:17,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:12:17,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:12:17,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:17,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:12:17,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:12:17,249 INFO L87 Difference]: Start difference. First operand 64 states and 83 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) [2024-11-09 05:12:17,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:17,342 INFO L93 Difference]: Finished difference Result 126 states and 167 transitions. [2024-11-09 05:12:17,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:12:17,344 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 [2024-11-09 05:12:17,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:17,346 INFO L225 Difference]: With dead ends: 126 [2024-11-09 05:12:17,348 INFO L226 Difference]: Without dead ends: 64 [2024-11-09 05:12:17,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:12:17,351 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 70 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:17,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 65 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:12:17,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-09 05:12:17,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-09 05:12:17,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 48 states have internal predecessors, (51), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-09 05:12:17,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2024-11-09 05:12:17,374 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 24 [2024-11-09 05:12:17,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:17,380 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2024-11-09 05:12:17,380 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) [2024-11-09 05:12:17,381 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2024-11-09 05:12:17,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 05:12:17,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:17,385 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] [2024-11-09 05:12:17,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:12:17,386 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:17,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:17,387 INFO L85 PathProgramCache]: Analyzing trace with hash -715052149, now seen corresponding path program 1 times [2024-11-09 05:12:17,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:17,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471122652] [2024-11-09 05:12:17,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:17,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:17,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:12:17,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:17,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471122652] [2024-11-09 05:12:17,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471122652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:12:17,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:12:17,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:12:17,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368330750] [2024-11-09 05:12:17,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:12:17,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:12:17,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:17,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:12:17,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:12:17,546 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 05:12:17,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:17,613 INFO L93 Difference]: Finished difference Result 105 states and 135 transitions. [2024-11-09 05:12:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:12:17,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2024-11-09 05:12:17,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:17,615 INFO L225 Difference]: With dead ends: 105 [2024-11-09 05:12:17,616 INFO L226 Difference]: Without dead ends: 56 [2024-11-09 05:12:17,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:12:17,622 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:17,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 103 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:12:17,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-09 05:12:17,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-09 05:12:17,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 43 states have internal predecessors, (45), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 05:12:17,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2024-11-09 05:12:17,647 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 28 [2024-11-09 05:12:17,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:17,652 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2024-11-09 05:12:17,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 05:12:17,653 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2024-11-09 05:12:17,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 05:12:17,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:17,655 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:12:17,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:12:17,656 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:17,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:17,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1555411999, now seen corresponding path program 1 times [2024-11-09 05:12:17,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:17,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964549350] [2024-11-09 05:12:17,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:17,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:17,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:12:17,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:17,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964549350] [2024-11-09 05:12:17,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964549350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:12:17,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:12:17,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:12:17,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374260470] [2024-11-09 05:12:17,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:12:17,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:12:17,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:17,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:12:17,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:12:17,798 INFO L87 Difference]: Start difference. First operand 56 states and 71 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:12:17,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:17,911 INFO L93 Difference]: Finished difference Result 151 states and 197 transitions. [2024-11-09 05:12:17,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:12:17,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-11-09 05:12:17,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:17,914 INFO L225 Difference]: With dead ends: 151 [2024-11-09 05:12:17,914 INFO L226 Difference]: Without dead ends: 97 [2024-11-09 05:12:17,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:12:17,917 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 44 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:17,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 118 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:12:17,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-09 05:12:17,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2024-11-09 05:12:17,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 61 states have (on average 1.2622950819672132) internal successors, (77), 69 states have internal predecessors, (77), 18 states have call successors, (18), 15 states have call predecessors, (18), 15 states have return successors, (24), 16 states have call predecessors, (24), 18 states have call successors, (24) [2024-11-09 05:12:17,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 119 transitions. [2024-11-09 05:12:17,960 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 119 transitions. Word has length 30 [2024-11-09 05:12:17,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:17,961 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 119 transitions. [2024-11-09 05:12:17,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:12:17,961 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 119 transitions. [2024-11-09 05:12:17,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 05:12:17,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:17,963 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:12:17,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:12:17,964 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:17,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:17,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1242273054, now seen corresponding path program 1 times [2024-11-09 05:12:17,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:17,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685469140] [2024-11-09 05:12:17,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:17,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:12:18,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:18,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685469140] [2024-11-09 05:12:18,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685469140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:12:18,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:12:18,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:12:18,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965299173] [2024-11-09 05:12:18,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:12:18,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:12:18,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:18,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:12:18,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:12:18,389 INFO L87 Difference]: Start difference. First operand 95 states and 119 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:12:18,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:18,670 INFO L93 Difference]: Finished difference Result 277 states and 346 transitions. [2024-11-09 05:12:18,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:12:18,672 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2024-11-09 05:12:18,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:18,676 INFO L225 Difference]: With dead ends: 277 [2024-11-09 05:12:18,676 INFO L226 Difference]: Without dead ends: 184 [2024-11-09 05:12:18,680 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 [2024-11-09 05:12:18,683 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 119 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:18,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 174 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:12:18,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-09 05:12:18,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 176. [2024-11-09 05:12:18,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 113 states have (on average 1.238938053097345) internal successors, (140), 125 states have internal predecessors, (140), 33 states have call successors, (33), 28 states have call predecessors, (33), 29 states have return successors, (45), 30 states have call predecessors, (45), 33 states have call successors, (45) [2024-11-09 05:12:18,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 218 transitions. [2024-11-09 05:12:18,742 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 218 transitions. Word has length 37 [2024-11-09 05:12:18,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:18,743 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 218 transitions. [2024-11-09 05:12:18,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 05:12:18,744 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 218 transitions. [2024-11-09 05:12:18,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 05:12:18,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:18,746 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:12:18,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:12:18,746 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:18,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:18,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1683823775, now seen corresponding path program 1 times [2024-11-09 05:12:18,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:18,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674458123] [2024-11-09 05:12:18,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:18,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:12:19,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:19,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674458123] [2024-11-09 05:12:19,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674458123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:12:19,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:12:19,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 05:12:19,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245367550] [2024-11-09 05:12:19,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:12:19,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:12:19,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:19,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:12:19,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:12:19,135 INFO L87 Difference]: Start difference. First operand 176 states and 218 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:12:19,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:19,819 INFO L93 Difference]: Finished difference Result 410 states and 518 transitions. [2024-11-09 05:12:19,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:12:19,821 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 40 [2024-11-09 05:12:19,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:19,824 INFO L225 Difference]: With dead ends: 410 [2024-11-09 05:12:19,824 INFO L226 Difference]: Without dead ends: 290 [2024-11-09 05:12:19,825 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 [2024-11-09 05:12:19,826 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 191 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:19,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 266 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:12:19,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-09 05:12:19,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 261. [2024-11-09 05:12:19,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 172 states have (on average 1.244186046511628) internal successors, (214), 189 states have internal predecessors, (214), 46 states have call successors, (46), 35 states have call predecessors, (46), 42 states have return successors, (65), 47 states have call predecessors, (65), 46 states have call successors, (65) [2024-11-09 05:12:19,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 325 transitions. [2024-11-09 05:12:19,886 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 325 transitions. Word has length 40 [2024-11-09 05:12:19,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:19,887 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 325 transitions. [2024-11-09 05:12:19,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 05:12:19,887 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 325 transitions. [2024-11-09 05:12:19,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 05:12:19,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:19,888 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:12:19,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:12:19,889 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:19,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:19,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1641303854, now seen corresponding path program 1 times [2024-11-09 05:12:19,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:19,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360652188] [2024-11-09 05:12:19,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:19,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:20,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:12:20,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:20,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360652188] [2024-11-09 05:12:20,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360652188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:12:20,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:12:20,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 05:12:20,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901111750] [2024-11-09 05:12:20,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:12:20,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:12:20,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:20,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:12:20,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:12:20,064 INFO L87 Difference]: Start difference. First operand 261 states and 325 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:12:20,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:20,567 INFO L93 Difference]: Finished difference Result 537 states and 674 transitions. [2024-11-09 05:12:20,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:12:20,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2024-11-09 05:12:20,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:20,571 INFO L225 Difference]: With dead ends: 537 [2024-11-09 05:12:20,572 INFO L226 Difference]: Without dead ends: 278 [2024-11-09 05:12:20,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-09 05:12:20,576 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 66 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:20,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 255 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:12:20,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-09 05:12:20,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 268. [2024-11-09 05:12:20,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 176 states have (on average 1.2102272727272727) internal successors, (213), 193 states have internal predecessors, (213), 47 states have call successors, (47), 35 states have call predecessors, (47), 44 states have return successors, (70), 50 states have call predecessors, (70), 47 states have call successors, (70) [2024-11-09 05:12:20,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 330 transitions. [2024-11-09 05:12:20,648 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 330 transitions. Word has length 40 [2024-11-09 05:12:20,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:20,649 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 330 transitions. [2024-11-09 05:12:20,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:12:20,649 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 330 transitions. [2024-11-09 05:12:20,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 05:12:20,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:20,655 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:12:20,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 05:12:20,655 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:20,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:20,656 INFO L85 PathProgramCache]: Analyzing trace with hash 97021997, now seen corresponding path program 1 times [2024-11-09 05:12:20,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:20,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807181456] [2024-11-09 05:12:20,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:20,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:12:20,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:20,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807181456] [2024-11-09 05:12:20,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807181456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:12:20,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175936812] [2024-11-09 05:12:20,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:20,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:12:20,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:12:20,843 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:12:20,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:12:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:20,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:12:20,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:12:21,093 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:12:21,093 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:12:21,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175936812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:12:21,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:12:21,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-09 05:12:21,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244156307] [2024-11-09 05:12:21,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:12:21,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:12:21,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:21,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:12:21,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:12:21,097 INFO L87 Difference]: Start difference. First operand 268 states and 330 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 05:12:21,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:21,193 INFO L93 Difference]: Finished difference Result 405 states and 503 transitions. [2024-11-09 05:12:21,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:12:21,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 70 [2024-11-09 05:12:21,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:21,196 INFO L225 Difference]: With dead ends: 405 [2024-11-09 05:12:21,196 INFO L226 Difference]: Without dead ends: 258 [2024-11-09 05:12:21,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:12:21,198 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 35 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:21,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 119 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:12:21,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-09 05:12:21,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2024-11-09 05:12:21,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 169 states have (on average 1.1775147928994083) internal successors, (199), 185 states have internal predecessors, (199), 45 states have call successors, (45), 35 states have call predecessors, (45), 43 states have return successors, (56), 48 states have call predecessors, (56), 45 states have call successors, (56) [2024-11-09 05:12:21,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 300 transitions. [2024-11-09 05:12:21,243 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 300 transitions. Word has length 70 [2024-11-09 05:12:21,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:21,243 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 300 transitions. [2024-11-09 05:12:21,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 05:12:21,244 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 300 transitions. [2024-11-09 05:12:21,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 05:12:21,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:21,246 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:12:21,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:12:21,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:12:21,447 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:21,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:21,449 INFO L85 PathProgramCache]: Analyzing trace with hash -955260949, now seen corresponding path program 1 times [2024-11-09 05:12:21,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:21,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860248055] [2024-11-09 05:12:21,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:21,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:21,712 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:12:21,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:21,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860248055] [2024-11-09 05:12:21,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860248055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:12:21,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904694459] [2024-11-09 05:12:21,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:21,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:12:21,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:12:21,715 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:12:21,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:12:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:21,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:12:21,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:12:22,080 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:12:22,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:12:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:12:22,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904694459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:12:22,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [538894914] [2024-11-09 05:12:22,427 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2024-11-09 05:12:22,428 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:12:22,433 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:12:22,440 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:12:22,441 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:12:31,054 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 39 for LOIs [2024-11-09 05:12:31,065 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 10 for LOIs [2024-11-09 05:12:31,206 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 33 for LOIs [2024-11-09 05:12:31,292 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 36 for LOIs [2024-11-09 05:12:31,375 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 1 for LOIs [2024-11-09 05:12:31,376 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 24 for LOIs [2024-11-09 05:12:31,380 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:12:35,105 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5925#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (not (= 2 ~waterLevel~0)) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (<= |old(~pumpRunning~0)| 2147483647) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (<= 0 (+ ~pumpRunning~0 2147483648)) (= ~switchedOnBeforeTS~0 0))' at error location [2024-11-09 05:12:35,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:12:35,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:12:35,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 15 [2024-11-09 05:12:35,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847129017] [2024-11-09 05:12:35,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:12:35,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 05:12:35,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:35,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 05:12:35,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1964, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 05:12:35,110 INFO L87 Difference]: Start difference. First operand 258 states and 300 transitions. Second operand has 15 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 states have internal predecessors, (95), 7 states have call successors, (23), 4 states have call predecessors, (23), 8 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) [2024-11-09 05:12:36,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:36,052 INFO L93 Difference]: Finished difference Result 338 states and 403 transitions. [2024-11-09 05:12:36,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 05:12:36,053 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 states have internal predecessors, (95), 7 states have call successors, (23), 4 states have call predecessors, (23), 8 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) Word has length 74 [2024-11-09 05:12:36,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:36,056 INFO L225 Difference]: With dead ends: 338 [2024-11-09 05:12:36,056 INFO L226 Difference]: Without dead ends: 336 [2024-11-09 05:12:36,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 186 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=366, Invalid=3294, Unknown=0, NotChecked=0, Total=3660 [2024-11-09 05:12:36,059 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 143 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:36,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 565 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:12:36,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-09 05:12:36,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 294. [2024-11-09 05:12:36,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 190 states have (on average 1.168421052631579) internal successors, (222), 211 states have internal predecessors, (222), 53 states have call successors, (53), 43 states have call predecessors, (53), 50 states have return successors, (68), 54 states have call predecessors, (68), 53 states have call successors, (68) [2024-11-09 05:12:36,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 343 transitions. [2024-11-09 05:12:36,098 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 343 transitions. Word has length 74 [2024-11-09 05:12:36,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:36,099 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 343 transitions. [2024-11-09 05:12:36,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 states have internal predecessors, (95), 7 states have call successors, (23), 4 states have call predecessors, (23), 8 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) [2024-11-09 05:12:36,099 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 343 transitions. [2024-11-09 05:12:36,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-09 05:12:36,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:36,104 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:12:36,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 05:12:36,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-09 05:12:36,305 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:36,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:36,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1394080644, now seen corresponding path program 1 times [2024-11-09 05:12:36,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:36,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754513557] [2024-11-09 05:12:36,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:36,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-09 05:12:36,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:36,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754513557] [2024-11-09 05:12:36,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754513557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:12:36,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:12:36,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:12:36,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302347090] [2024-11-09 05:12:36,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:12:36,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:12:36,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:36,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:12:36,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:12:36,454 INFO L87 Difference]: Start difference. First operand 294 states and 343 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-09 05:12:36,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:36,760 INFO L93 Difference]: Finished difference Result 758 states and 891 transitions. [2024-11-09 05:12:36,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:12:36,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 93 [2024-11-09 05:12:36,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:36,767 INFO L225 Difference]: With dead ends: 758 [2024-11-09 05:12:36,767 INFO L226 Difference]: Without dead ends: 584 [2024-11-09 05:12:36,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:12:36,769 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 118 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:36,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 214 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:12:36,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-11-09 05:12:36,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 582. [2024-11-09 05:12:36,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 377 states have (on average 1.1644562334217508) internal successors, (439), 416 states have internal predecessors, (439), 104 states have call successors, (104), 86 states have call predecessors, (104), 100 states have return successors, (134), 108 states have call predecessors, (134), 104 states have call successors, (134) [2024-11-09 05:12:36,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 677 transitions. [2024-11-09 05:12:36,842 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 677 transitions. Word has length 93 [2024-11-09 05:12:36,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:36,842 INFO L471 AbstractCegarLoop]: Abstraction has 582 states and 677 transitions. [2024-11-09 05:12:36,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-09 05:12:36,843 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 677 transitions. [2024-11-09 05:12:36,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-09 05:12:36,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:36,845 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:12:36,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 05:12:36,846 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:36,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:36,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1253825783, now seen corresponding path program 1 times [2024-11-09 05:12:36,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:36,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195128035] [2024-11-09 05:12:36,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:36,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:37,134 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-09 05:12:37,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:37,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195128035] [2024-11-09 05:12:37,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195128035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:12:37,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971272151] [2024-11-09 05:12:37,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:37,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:12:37,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:12:37,137 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:12:37,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:12:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:37,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 05:12:37,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:12:37,522 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:12:37,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:12:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 05:12:37,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971272151] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:12:37,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [319505601] [2024-11-09 05:12:37,906 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2024-11-09 05:12:37,906 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:12:37,907 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:12:37,907 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:12:37,907 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:12:42,065 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 11 for LOIs [2024-11-09 05:12:42,069 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 12 for LOIs [2024-11-09 05:12:42,171 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 11 for LOIs [2024-11-09 05:12:42,184 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 11 for LOIs [2024-11-09 05:12:42,202 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 5 for LOIs [2024-11-09 05:12:42,203 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 17 for LOIs [2024-11-09 05:12:42,207 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 23 for LOIs [2024-11-09 05:12:42,210 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:12:44,895 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9600#(and (not (= ~pumpRunning~0 0)) (<= 0 |old(~pumpRunning~0)|) (<= ~pumpRunning~0 1) (not (= 2 ~waterLevel~0)) (<= |old(~pumpRunning~0)| 2147483647) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (<= 0 ~pumpRunning~0) (= ~switchedOnBeforeTS~0 0))' at error location [2024-11-09 05:12:44,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:12:44,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:12:44,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2024-11-09 05:12:44,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045854977] [2024-11-09 05:12:44,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:12:44,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 05:12:44,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:44,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 05:12:44,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=2440, Unknown=0, NotChecked=0, Total=2756 [2024-11-09 05:12:44,900 INFO L87 Difference]: Start difference. First operand 582 states and 677 transitions. Second operand has 20 states, 20 states have (on average 5.5) internal successors, (110), 20 states have internal predecessors, (110), 9 states have call successors, (24), 5 states have call predecessors, (24), 8 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) [2024-11-09 05:12:47,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:47,088 INFO L93 Difference]: Finished difference Result 1708 states and 2172 transitions. [2024-11-09 05:12:47,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 05:12:47,089 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.5) internal successors, (110), 20 states have internal predecessors, (110), 9 states have call successors, (24), 5 states have call predecessors, (24), 8 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) Word has length 96 [2024-11-09 05:12:47,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:47,097 INFO L225 Difference]: With dead ends: 1708 [2024-11-09 05:12:47,097 INFO L226 Difference]: Without dead ends: 1112 [2024-11-09 05:12:47,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 246 SyntacticMatches, 5 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2099 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=672, Invalid=5334, Unknown=0, NotChecked=0, Total=6006 [2024-11-09 05:12:47,103 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 304 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:47,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 447 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 05:12:47,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2024-11-09 05:12:47,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 730. [2024-11-09 05:12:47,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 473 states have (on average 1.1268498942917549) internal successors, (533), 516 states have internal predecessors, (533), 124 states have call successors, (124), 112 states have call predecessors, (124), 132 states have return successors, (164), 134 states have call predecessors, (164), 124 states have call successors, (164) [2024-11-09 05:12:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 821 transitions. [2024-11-09 05:12:47,232 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 821 transitions. Word has length 96 [2024-11-09 05:12:47,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:47,234 INFO L471 AbstractCegarLoop]: Abstraction has 730 states and 821 transitions. [2024-11-09 05:12:47,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.5) internal successors, (110), 20 states have internal predecessors, (110), 9 states have call successors, (24), 5 states have call predecessors, (24), 8 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) [2024-11-09 05:12:47,235 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 821 transitions. [2024-11-09 05:12:47,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-09 05:12:47,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:47,238 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:12:47,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 05:12:47,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 05:12:47,443 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:47,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:47,444 INFO L85 PathProgramCache]: Analyzing trace with hash -393078621, now seen corresponding path program 1 times [2024-11-09 05:12:47,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:47,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209168121] [2024-11-09 05:12:47,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:47,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 05:12:48,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:48,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209168121] [2024-11-09 05:12:48,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209168121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:12:48,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471962226] [2024-11-09 05:12:48,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:48,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:12:48,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:12:48,517 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:12:48,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:12:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:48,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 05:12:48,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:12:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 60 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:12:49,165 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:12:49,729 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 51 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-09 05:12:49,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471962226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:12:49,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2053760493] [2024-11-09 05:12:49,733 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2024-11-09 05:12:49,733 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:12:49,734 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:12:49,735 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:12:49,736 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:12:52,184 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 3 for LOIs [2024-11-09 05:12:52,186 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 10 for LOIs [2024-11-09 05:12:52,298 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 11 for LOIs [2024-11-09 05:12:52,310 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 11 for LOIs [2024-11-09 05:12:52,326 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 1 for LOIs [2024-11-09 05:12:52,327 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 15 for LOIs [2024-11-09 05:12:52,331 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 23 for LOIs [2024-11-09 05:12:52,333 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:12:54,478 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14042#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 1) (not (= 2 ~waterLevel~0)) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (<= |old(~pumpRunning~0)| 2147483647) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (<= 0 ~pumpRunning~0) (= ~switchedOnBeforeTS~0 0))' at error location [2024-11-09 05:12:54,478 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:12:54,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:12:54,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 33 [2024-11-09 05:12:54,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783007946] [2024-11-09 05:12:54,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:12:54,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 05:12:54,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:54,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 05:12:54,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=3502, Unknown=0, NotChecked=0, Total=3906 [2024-11-09 05:12:54,483 INFO L87 Difference]: Start difference. First operand 730 states and 821 transitions. Second operand has 33 states, 31 states have (on average 4.838709677419355) internal successors, (150), 32 states have internal predecessors, (150), 18 states have call successors, (33), 8 states have call predecessors, (33), 13 states have return successors, (33), 18 states have call predecessors, (33), 17 states have call successors, (33) [2024-11-09 05:12:58,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:58,888 INFO L93 Difference]: Finished difference Result 1792 states and 2079 transitions. [2024-11-09 05:12:58,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-09 05:12:58,889 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 4.838709677419355) internal successors, (150), 32 states have internal predecessors, (150), 18 states have call successors, (33), 8 states have call predecessors, (33), 13 states have return successors, (33), 18 states have call predecessors, (33), 17 states have call successors, (33) Word has length 101 [2024-11-09 05:12:58,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:58,893 INFO L225 Difference]: With dead ends: 1792 [2024-11-09 05:12:58,893 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 05:12:58,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 277 SyntacticMatches, 6 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 4298 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1641, Invalid=11241, Unknown=0, NotChecked=0, Total=12882 [2024-11-09 05:12:58,903 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 1535 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 2095 mSolverCounterSat, 1241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 3336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1241 IncrementalHoareTripleChecker+Valid, 2095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:58,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 823 Invalid, 3336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1241 Valid, 2095 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 05:12:58,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 05:12:58,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 05:12:58,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:12:58,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 05:12:58,907 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 101 [2024-11-09 05:12:58,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:58,908 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 05:12:58,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 4.838709677419355) internal successors, (150), 32 states have internal predecessors, (150), 18 states have call successors, (33), 8 states have call predecessors, (33), 13 states have return successors, (33), 18 states have call predecessors, (33), 17 states have call successors, (33) [2024-11-09 05:12:58,909 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 05:12:58,909 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 05:12:58,912 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 05:12:58,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 05:12:59,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:12:59,119 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:12:59,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 05:13:13,953 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:13:13,982 WARN L162 FloydHoareUtils]: Requires clause for deactivatePump contained old-variable. Original clause: (and (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |old(~pumpRunning~0)| 1)) (.cse2 (<= 1 ~switchedOnBeforeTS~0))) (or (and .cse0 .cse1 (<= ~waterLevel~0 0) .cse2) (and .cse0 .cse1 (= ~waterLevel~0 1) .cse2))) (= ~pumpRunning~0 1)) Eliminated clause: (and (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (<= 1 ~switchedOnBeforeTS~0))) (or (and .cse0 (= ~waterLevel~0 1) .cse1) (and .cse0 (<= ~waterLevel~0 0) .cse1))) (= ~pumpRunning~0 1)) [2024-11-09 05:13:14,024 WARN L162 FloydHoareUtils]: Requires clause for changeMethaneLevel contained old-variable. Original clause: (let ((.cse3 (= |old(~methaneLevelCritical~0)| 0)) (.cse4 (= ~methaneLevelCritical~0 0))) (and (let ((.cse0 (= 1 ~systemActive~0)) (.cse2 (<= 1 ~switchedOnBeforeTS~0)) (.cse1 (= ~pumpRunning~0 1))) (or (and (= ~pumpRunning~0 0) .cse0 (<= ~waterLevel~0 2)) (and (= 2 ~waterLevel~0) .cse0 .cse1) (and .cse0 (= ~waterLevel~0 1) .cse2 .cse1) (and .cse0 (<= ~waterLevel~0 0) .cse2 .cse1))) (or .cse3 (not .cse4)) (or (not .cse3) .cse4))) Eliminated clause: (and (let ((.cse0 (= 1 ~systemActive~0)) (.cse2 (<= 1 ~switchedOnBeforeTS~0)) (.cse1 (= ~pumpRunning~0 1))) (or (and (= ~pumpRunning~0 0) .cse0 (<= ~waterLevel~0 2)) (and (= 2 ~waterLevel~0) .cse0 .cse1) (and .cse0 (= ~waterLevel~0 1) .cse2 .cse1) (and .cse0 (<= ~waterLevel~0 0) .cse2 .cse1))) (exists ((|old(~methaneLevelCritical~0)| Int)) (let ((.cse3 (= |old(~methaneLevelCritical~0)| 0)) (.cse4 (= ~methaneLevelCritical~0 0))) (and (or .cse3 (not .cse4)) (or (not .cse3) .cse4))))) [2024-11-09 05:13:14,032 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 05:13:14,050 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (< |old(~switchedOnBeforeTS~0)| 1) (<= 1 ~switchedOnBeforeTS~0)) (or (not .cse0) (and (= ~pumpRunning~0 0) .cse1)) (or (< |old(~pumpRunning~0)| 1) (and .cse1 (= ~pumpRunning~0 1))) (let ((.cse3 (= |old(~pumpRunning~0)| 1)) (.cse2 (= 1 ~systemActive~0)) (.cse4 (<= |old(~waterLevel~0)| 2))) (or (and .cse2 .cse3 (= |old(~waterLevel~0)| 2)) (and .cse2 .cse3 (<= 1 |old(~switchedOnBeforeTS~0)|) .cse4) (and .cse2 .cse0 .cse4))))) Eliminated clause: (exists ((|old(~pumpRunning~0)| Int) (|old(~switchedOnBeforeTS~0)| Int) (|old(~waterLevel~0)| Int)) (let ((.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (and (= ~pumpRunning~0 0) .cse1)) (or (< |old(~switchedOnBeforeTS~0)| 1) (< 0 ~switchedOnBeforeTS~0)) (or (< |old(~pumpRunning~0)| 1) (and .cse1 (= ~pumpRunning~0 1))) (let ((.cse3 (= |old(~pumpRunning~0)| 1)) (.cse2 (= 1 ~systemActive~0)) (.cse4 (<= |old(~waterLevel~0)| 2))) (or (and .cse2 .cse3 (= |old(~waterLevel~0)| 2)) (and .cse2 .cse3 (<= 1 |old(~switchedOnBeforeTS~0)|) .cse4) (and .cse2 .cse0 .cse4)))))) [2024-11-09 05:13:14,079 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 05:13:14,093 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__highWaterSensor contained old-variable. Original clause: (let ((.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0)) (or (< |old(~pumpRunning~0)| 1) (= ~pumpRunning~0 1)) (let ((.cse1 (= 1 ~systemActive~0)) (.cse2 (= |old(~pumpRunning~0)| 1)) (.cse3 (<= 1 ~switchedOnBeforeTS~0))) (or (and .cse1 .cse2 (<= ~waterLevel~0 0) .cse3) (and .cse1 .cse0 (<= ~waterLevel~0 2)) (and .cse1 .cse2 (= ~waterLevel~0 1) .cse3))))) Eliminated clause: (exists ((|old(~pumpRunning~0)| Int)) (let ((.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0)) (or (< |old(~pumpRunning~0)| 1) (= ~pumpRunning~0 1)) (let ((.cse1 (= 1 ~systemActive~0)) (.cse2 (= |old(~pumpRunning~0)| 1)) (.cse3 (<= 1 ~switchedOnBeforeTS~0))) (or (and .cse1 .cse2 (<= ~waterLevel~0 0) .cse3) (and .cse1 .cse0 (<= ~waterLevel~0 2)) (and .cse1 .cse2 (= ~waterLevel~0 1) .cse3)))))) [2024-11-09 05:13:14,099 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 05:13:14,103 WARN L162 FloydHoareUtils]: Requires clause for waterRise contained old-variable. Original clause: (and (let ((.cse1 (<= |old(~waterLevel~0)| 2)) (.cse0 (= 1 ~systemActive~0)) (.cse2 (= ~pumpRunning~0 1))) (or (and .cse0 (<= 1 ~switchedOnBeforeTS~0) .cse1 .cse2) (and (= ~pumpRunning~0 0) .cse0 .cse1) (and .cse0 (= |old(~waterLevel~0)| 2) .cse2))) (= |old(~waterLevel~0)| ~waterLevel~0)) Eliminated clause: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (<= ~waterLevel~0 2)) (.cse2 (= ~pumpRunning~0 1))) (or (and (= ~pumpRunning~0 0) .cse0 .cse1) (and (= 2 ~waterLevel~0) .cse0 .cse2) (and .cse0 .cse1 (<= 1 ~switchedOnBeforeTS~0) .cse2))) [2024-11-09 05:13:14,121 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__lowWaterSensor contained old-variable. Original clause: (let ((.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0)) (or (< |old(~pumpRunning~0)| 1) (= ~pumpRunning~0 1)) (let ((.cse1 (= 1 ~systemActive~0)) (.cse2 (= |old(~pumpRunning~0)| 1)) (.cse3 (<= 1 ~switchedOnBeforeTS~0))) (or (and .cse1 .cse2 (<= ~waterLevel~0 0) .cse3) (and .cse1 .cse0 (<= ~waterLevel~0 2)) (and .cse1 .cse2 (= ~waterLevel~0 1) .cse3))))) Eliminated clause: (exists ((|old(~pumpRunning~0)| Int)) (let ((.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0)) (or (< |old(~pumpRunning~0)| 1) (= ~pumpRunning~0 1)) (let ((.cse1 (= 1 ~systemActive~0)) (.cse2 (= |old(~pumpRunning~0)| 1)) (.cse3 (<= 1 ~switchedOnBeforeTS~0))) (or (and .cse1 .cse2 (<= ~waterLevel~0 0) .cse3) (and .cse1 .cse0 (<= ~waterLevel~0 2)) (and .cse1 .cse2 (= ~waterLevel~0 1) .cse3)))))) [2024-11-09 05:13:14,126 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 05:13:14,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:13:14 BoogieIcfgContainer [2024-11-09 05:13:14,143 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:13:14,143 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:13:14,144 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:13:14,144 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:13:14,144 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:12:16" (3/4) ... [2024-11-09 05:13:14,152 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 05:13:14,160 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2024-11-09 05:13:14,160 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-09 05:13:14,160 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-09 05:13:14,161 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-09 05:13:14,161 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-09 05:13:14,161 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 05:13:14,162 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-09 05:13:14,162 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__lowWaterSensor [2024-11-09 05:13:14,162 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2024-11-09 05:13:14,176 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 48 nodes and edges [2024-11-09 05:13:14,179 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-09 05:13:14,179 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 05:13:14,180 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 05:13:14,180 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 05:13:14,380 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 05:13:14,384 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 05:13:14,384 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:13:14,385 INFO L158 Benchmark]: Toolchain (without parser) took 59804.00ms. Allocated memory was 178.3MB in the beginning and 1.1GB in the end (delta: 920.6MB). Free memory was 135.3MB in the beginning and 1.1GB in the end (delta: -915.1MB). Peak memory consumption was 653.7MB. Max. memory is 16.1GB. [2024-11-09 05:13:14,385 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 115.3MB. Free memory is still 64.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:13:14,386 INFO L158 Benchmark]: CACSL2BoogieTranslator took 650.88ms. Allocated memory is still 178.3MB. Free memory was 134.7MB in the beginning and 112.8MB in the end (delta: 21.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-09 05:13:14,386 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.71ms. Allocated memory is still 178.3MB. Free memory was 112.8MB in the beginning and 110.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:13:14,387 INFO L158 Benchmark]: Boogie Preprocessor took 58.71ms. Allocated memory is still 178.3MB. Free memory was 110.7MB in the beginning and 108.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:13:14,387 INFO L158 Benchmark]: RCFGBuilder took 947.50ms. Allocated memory is still 178.3MB. Free memory was 108.6MB in the beginning and 137.8MB in the end (delta: -29.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-11-09 05:13:14,388 INFO L158 Benchmark]: TraceAbstraction took 57824.47ms. Allocated memory was 178.3MB in the beginning and 1.1GB in the end (delta: 920.6MB). Free memory was 136.8MB in the beginning and 408.8MB in the end (delta: -272.0MB). Peak memory consumption was 658.2MB. Max. memory is 16.1GB. [2024-11-09 05:13:14,388 INFO L158 Benchmark]: Witness Printer took 240.84ms. Allocated memory is still 1.1GB. Free memory was 408.8MB in the beginning and 1.1GB in the end (delta: -641.5MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2024-11-09 05:13:14,390 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 115.3MB. Free memory is still 64.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 650.88ms. Allocated memory is still 178.3MB. Free memory was 134.7MB in the beginning and 112.8MB in the end (delta: 21.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.71ms. Allocated memory is still 178.3MB. Free memory was 112.8MB in the beginning and 110.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.71ms. Allocated memory is still 178.3MB. Free memory was 110.7MB in the beginning and 108.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 947.50ms. Allocated memory is still 178.3MB. Free memory was 108.6MB in the beginning and 137.8MB in the end (delta: -29.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 57824.47ms. Allocated memory was 178.3MB in the beginning and 1.1GB in the end (delta: 920.6MB). Free memory was 136.8MB in the beginning and 408.8MB in the end (delta: -272.0MB). Peak memory consumption was 658.2MB. Max. memory is 16.1GB. * Witness Printer took 240.84ms. Allocated memory is still 1.1GB. Free memory was 408.8MB in the beginning and 1.1GB in the end (delta: -641.5MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [49] - GenericResultAtLocation [Line: 415]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [415] - GenericResultAtLocation [Line: 653]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [653] - GenericResultAtLocation [Line: 691]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [691] - GenericResultAtLocation [Line: 759]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [759] - GenericResultAtLocation [Line: 810]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [810] - GenericResultAtLocation [Line: 907]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [907] - GenericResultAtLocation [Line: 916]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [916] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 912]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 42.7s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2656 SdHoareTripleChecker+Valid, 5.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2632 mSDsluCounter, 3220 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2295 mSDsCounter, 1693 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4747 IncrementalHoareTripleChecker+Invalid, 6440 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1693 mSolverCounterUnsat, 925 mSDtfsCounter, 4747 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1112 GetRequests, 807 SyntacticMatches, 16 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 7629 ImplicationChecksByTransitivity, 13.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=730occurred in iteration=11, InterpolantAutomatonStates: 152, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 475 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 995 NumberOfCodeBlocks, 995 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1247 ConstructedInterpolants, 0 QuantifiedInterpolants, 3454 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1244 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 19 InterpolantComputations, 9 PerfectInterpolantSequences, 571/688 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 705]: Loop Invariant Derived loop invariant: ((((((((((((((1 == systemActive) && (methaneLevelCritical != 0)) && (splverifierCounter == 0)) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1)) || (((((pumpRunning == 0) && (waterLevel <= 1)) && (1 == systemActive)) && (methaneLevelCritical != 0)) && (splverifierCounter == 0))) || (((((2 == waterLevel) && (methaneLevelCritical == 0)) && (1 == systemActive)) && (splverifierCounter == 0)) && (pumpRunning == 1))) || (((((2 == waterLevel) && (1 == systemActive)) && (methaneLevelCritical != 0)) && (splverifierCounter == 0)) && (pumpRunning == 1))) || ((((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive)) && (splverifierCounter == 0))) || ((((((methaneLevelCritical == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((((((1 == systemActive) && (methaneLevelCritical != 0)) && (splverifierCounter == 0)) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((((((methaneLevelCritical == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || (((((pumpRunning == 0) && (methaneLevelCritical == 0)) && (waterLevel <= 1)) && (1 == systemActive)) && (splverifierCounter == 0))) - InvariantResult [Line: 704]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 822]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 551]: Procedure Contract for deactivatePump Derived contract for procedure deactivatePump. Requires: (((((1 == systemActive) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) || (((1 == systemActive) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS))) && (pumpRunning == 1)) Ensures: (((pumpRunning == 0) && (((((1 == systemActive) && (\old(pumpRunning) == 1)) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) || ((((1 == systemActive) && (\old(pumpRunning) == 1)) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)))) && ((((((head == \old(head)) && (systemActive == \old(systemActive))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 458]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: (((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) || ((((1 == systemActive) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) Ensures: ((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) || ((((1 == systemActive) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) && (((((((head == \old(head)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 943]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Requires: ((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) Ensures: (((((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) && ((methaneLevelCritical == 0) || (\old(methaneLevelCritical) == 0))) && ((\old(methaneLevelCritical) != 0) || (methaneLevelCritical != 0))) && ((((((head == \old(head)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel)))) - ProcedureContractResult [Line: 812]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((head == \old(head)) && (systemActive == \old(systemActive))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 431]: Procedure Contract for timeShift Derived contract for procedure timeShift. Ensures: ((((((((1 == systemActive) && (\old(pumpRunning) == 1)) && (\old(waterLevel) == 2)) || ((1 == systemActive) && (\old(pumpRunning) == 0))) || ((((1 == systemActive) && (\old(pumpRunning) == 1)) && (1 <= \old(switchedOnBeforeTS))) && (\old(waterLevel) <= 2))) && ((((((pumpRunning == 0) && (waterLevel <= 1)) && (\old(waterLevel) == waterLevel)) || (\old(pumpRunning) != 0)) || (((pumpRunning == 0) && (2 == waterLevel)) && (\old(waterLevel) == 2))) || (((2 == waterLevel) && (\old(waterLevel) == 2)) && (pumpRunning == 1)))) && (((\old(pumpRunning) < 1) || (((pumpRunning == 0) && (((\old(waterLevel) == ((long long) waterLevel + 1)) && (1 <= \old(waterLevel))) || ((\old(waterLevel) <= 0) && (\old(waterLevel) == waterLevel)))) && (1 <= switchedOnBeforeTS))) || (((((\old(waterLevel) == ((long long) waterLevel + 1)) && (1 <= \old(waterLevel))) || ((\old(waterLevel) <= 0) && (\old(waterLevel) == waterLevel))) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1)))) && ((((head == \old(head)) && (systemActive == \old(systemActive))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 466]: Procedure Contract for processEnvironment__wrappee__highWaterSensor Derived contract for procedure processEnvironment__wrappee__highWaterSensor. Ensures: (((((\old(pumpRunning) < 1) || (pumpRunning == 1)) && (((\old(pumpRunning) != 0) || (pumpRunning == 0)) || ((2 == waterLevel) && (pumpRunning == 1)))) && ((((((1 == systemActive) && (\old(pumpRunning) == 1)) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && (waterLevel <= 2))) || ((((1 == systemActive) && (\old(pumpRunning) == 1)) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)))) && ((((((head == \old(head)) && (systemActive == \old(systemActive))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 931]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: (((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel <= 2)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) Ensures: (((((((2 == waterLevel) || (\old(waterLevel) != 2)) && ((((((1 == systemActive) && (1 <= switchedOnBeforeTS)) && (\old(waterLevel) <= 2)) && (pumpRunning == 1)) || (((pumpRunning == 0) && (1 == systemActive)) && (\old(waterLevel) <= 2))) || (((1 == systemActive) && (\old(waterLevel) == 2)) && (pumpRunning == 1)))) && ((2 == waterLevel) || (\old(waterLevel) != 1))) && (((0 < \old(waterLevel)) || (pumpRunning != 1)) || (waterLevel < 2))) && (waterLevel <= 2)) && ((((((head == \old(head)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 492]: Procedure Contract for processEnvironment__wrappee__lowWaterSensor Derived contract for procedure processEnvironment__wrappee__lowWaterSensor. Ensures: ((((((\old(pumpRunning) != 0) || (pumpRunning == 0)) || (2 == waterLevel)) && ((((((1 == systemActive) && (\old(pumpRunning) == 1)) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && (waterLevel <= 2))) || ((((1 == systemActive) && (\old(pumpRunning) == 1)) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)))) && ((pumpRunning == 0) || (pumpRunning == 1))) && ((((((head == \old(head)) && (systemActive == \old(systemActive))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 570]: Procedure Contract for isPumpRunning Derived contract for procedure isPumpRunning. Requires: ((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) Ensures: ((((((\result == 1) && (1 == systemActive)) || (pumpRunning != 1)) && ((pumpRunning != 0) || (\result == 0))) && ((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) || (((waterLevel == 1) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((2 == waterLevel) && (pumpRunning == 1))) || (((waterLevel <= 0) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1)))) && (((((((head == \old(head)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) RESULT: Ultimate proved your program to be correct! [2024-11-09 05:13:14,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf36faa6-702b-4b33-84d6-2267fbd20bf6/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE