./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product48.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product48.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E --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 96a9f4a5eb48d3a052332271e6f513d6efe176b9f027fc1b42847acbd4831cf9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:55:10,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:55:11,005 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:55:11,009 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:55:11,009 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:55:11,040 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:55:11,041 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:55:11,041 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:55:11,041 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:55:11,041 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:55:11,042 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:55:11,042 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:55:11,042 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:55:11,042 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:55:11,042 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:55:11,042 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:55:11,042 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:55:11,042 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:55:11,043 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:55:11,043 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:55:11,043 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:55:11,043 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:55:11,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:55:11,045 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:55:11,045 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:55:11,045 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:55:11,046 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:55:11,046 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:55:11,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:55:11,046 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:55:11,046 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:55:11,046 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:55:11,046 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:55:11,046 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:55:11,046 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:55:11,046 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:55:11,047 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:55:11,047 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:55:11,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:55:11,047 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:55:11,047 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:55:11,047 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:55:11,047 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:55:11,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:55:11,047 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:55:11,048 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:55:11,048 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:55:11,048 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E 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 -> 96a9f4a5eb48d3a052332271e6f513d6efe176b9f027fc1b42847acbd4831cf9 [2024-11-14 04:55:11,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:55:11,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:55:11,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:55:11,374 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:55:11,374 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:55:11,377 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/product-lines/minepump_spec5_product48.cil.c Unable to find full path for "g++" [2024-11-14 04:55:13,402 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:55:13,765 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:55:13,766 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/sv-benchmarks/c/product-lines/minepump_spec5_product48.cil.c [2024-11-14 04:55:13,783 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/data/726f0a4ca/755c478a51b04e06a6698e4cbc3b3f2d/FLAG5ef4e6165 [2024-11-14 04:55:13,805 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/data/726f0a4ca/755c478a51b04e06a6698e4cbc3b3f2d [2024-11-14 04:55:13,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:55:13,811 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:55:13,812 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:55:13,813 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:55:13,817 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:55:13,819 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:55:13" (1/1) ... [2024-11-14 04:55:13,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5290d23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:13, skipping insertion in model container [2024-11-14 04:55:13,821 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:55:13" (1/1) ... [2024-11-14 04:55:13,868 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:55:14,158 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_1bbfef38-b1df-4ed1-b550-937dea137b69/sv-benchmarks/c/product-lines/minepump_spec5_product48.cil.c[11292,11305] [2024-11-14 04:55:14,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:55:14,250 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:55:14,260 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [49] [2024-11-14 04:55:14,262 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [415] [2024-11-14 04:55:14,262 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [424] [2024-11-14 04:55:14,262 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [499] [2024-11-14 04:55:14,262 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [730] [2024-11-14 04:55:14,262 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [825] [2024-11-14 04:55:14,262 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [926] [2024-11-14 04:55:14,262 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [975] [2024-11-14 04:55:14,329 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_1bbfef38-b1df-4ed1-b550-937dea137b69/sv-benchmarks/c/product-lines/minepump_spec5_product48.cil.c[11292,11305] [2024-11-14 04:55:14,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:55:14,365 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:55:14,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:14 WrapperNode [2024-11-14 04:55:14,366 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:55:14,367 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:55:14,367 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:55:14,367 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:55:14,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:14" (1/1) ... [2024-11-14 04:55:14,385 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:14" (1/1) ... [2024-11-14 04:55:14,407 INFO L138 Inliner]: procedures = 58, calls = 105, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 216 [2024-11-14 04:55:14,408 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:55:14,408 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:55:14,408 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:55:14,409 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:55:14,420 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:14" (1/1) ... [2024-11-14 04:55:14,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:14" (1/1) ... [2024-11-14 04:55:14,427 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:14" (1/1) ... [2024-11-14 04:55:14,427 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:14" (1/1) ... [2024-11-14 04:55:14,441 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:14" (1/1) ... [2024-11-14 04:55:14,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:14" (1/1) ... [2024-11-14 04:55:14,448 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:14" (1/1) ... [2024-11-14 04:55:14,449 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:14" (1/1) ... [2024-11-14 04:55:14,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:55:14,453 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:55:14,453 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:55:14,453 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:55:14,454 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:14" (1/1) ... [2024-11-14 04:55:14,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:55:14,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:55:14,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:55:14,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:55:14,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:55:14,544 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-14 04:55:14,544 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-14 04:55:14,544 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-14 04:55:14,544 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-14 04:55:14,544 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-14 04:55:14,545 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-14 04:55:14,545 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-14 04:55:14,545 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-14 04:55:14,545 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2024-11-14 04:55:14,545 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2024-11-14 04:55:14,546 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2024-11-14 04:55:14,546 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2024-11-14 04:55:14,546 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2024-11-14 04:55:14,546 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2024-11-14 04:55:14,546 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2024-11-14 04:55:14,546 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2024-11-14 04:55:14,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:55:14,546 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-14 04:55:14,546 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-14 04:55:14,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:55:14,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:55:14,637 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:55:14,639 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:55:14,997 INFO L? ?]: Removed 43 outVars from TransFormulas that were not future-live. [2024-11-14 04:55:14,997 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:55:15,156 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:55:15,157 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 04:55:15,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:55:15 BoogieIcfgContainer [2024-11-14 04:55:15,157 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:55:15,160 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:55:15,160 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:55:15,169 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:55:15,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:55:13" (1/3) ... [2024-11-14 04:55:15,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7561c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:55:15, skipping insertion in model container [2024-11-14 04:55:15,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:55:14" (2/3) ... [2024-11-14 04:55:15,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7561c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:55:15, skipping insertion in model container [2024-11-14 04:55:15,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:55:15" (3/3) ... [2024-11-14 04:55:15,173 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product48.cil.c [2024-11-14 04:55:15,189 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:55:15,191 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG minepump_spec5_product48.cil.c that has 10 procedures, 72 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-14 04:55:15,261 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:55:15,291 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;@17e5a53b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:55:15,291 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:55:15,296 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 54 states have internal predecessors, (64), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-14 04:55:15,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 04:55:15,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:55:15,308 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] [2024-11-14 04:55:15,308 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:55:15,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:55:15,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2115804346, now seen corresponding path program 1 times [2024-11-14 04:55:15,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:55:15,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229455109] [2024-11-14 04:55:15,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:55:15,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:55:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:55:15,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:55:15,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:55:15,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229455109] [2024-11-14 04:55:15,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229455109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:55:15,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:55:15,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:55:15,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754607002] [2024-11-14 04:55:15,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:55:15,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 04:55:15,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:55:15,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 04:55:15,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:55:15,572 INFO L87 Difference]: Start difference. First operand has 72 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 54 states have internal predecessors, (64), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 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) [2024-11-14 04:55:15,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:55:15,665 INFO L93 Difference]: Finished difference Result 142 states and 193 transitions. [2024-11-14 04:55:15,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 04:55:15,668 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 [2024-11-14 04:55:15,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:55:15,678 INFO L225 Difference]: With dead ends: 142 [2024-11-14 04:55:15,679 INFO L226 Difference]: Without dead ends: 67 [2024-11-14 04:55:15,685 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 [2024-11-14 04:55:15,690 INFO L432 NwaCegarLoop]: 75 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, 75 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 [2024-11-14 04:55:15,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:55:15,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-14 04:55:15,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-14 04:55:15,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 50 states have internal predecessors, (56), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-14 04:55:15,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2024-11-14 04:55:15,738 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 21 [2024-11-14 04:55:15,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:55:15,738 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2024-11-14 04:55:15,739 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) [2024-11-14 04:55:15,739 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2024-11-14 04:55:15,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 04:55:15,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:55:15,742 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:55:15,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:55:15,743 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:55:15,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:55:15,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1039227506, now seen corresponding path program 1 times [2024-11-14 04:55:15,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:55:15,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336718323] [2024-11-14 04:55:15,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:55:15,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:55:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:55:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:55:15,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:55:15,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336718323] [2024-11-14 04:55:15,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336718323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:55:15,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:55:15,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:55:15,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907466756] [2024-11-14 04:55:15,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:55:15,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:55:15,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:55:15,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:55:15,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:55:15,875 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:55:15,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:55:15,953 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2024-11-14 04:55:15,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:55:15,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-11-14 04:55:15,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:55:15,955 INFO L225 Difference]: With dead ends: 106 [2024-11-14 04:55:15,955 INFO L226 Difference]: Without dead ends: 59 [2024-11-14 04:55:15,955 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 [2024-11-14 04:55:15,956 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 14 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:55:15,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 106 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:55:15,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-14 04:55:15,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-14 04:55:15,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 45 states have internal predecessors, (50), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 04:55:15,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 76 transitions. [2024-11-14 04:55:15,966 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 76 transitions. Word has length 22 [2024-11-14 04:55:15,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:55:15,966 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 76 transitions. [2024-11-14 04:55:15,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:55:15,966 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2024-11-14 04:55:15,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 04:55:15,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:55:15,967 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] [2024-11-14 04:55:15,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:55:15,967 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:55:15,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:55:15,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1844755328, now seen corresponding path program 1 times [2024-11-14 04:55:15,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:55:15,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129987881] [2024-11-14 04:55:15,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:55:15,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:55:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:55:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:55:16,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:55:16,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129987881] [2024-11-14 04:55:16,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129987881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:55:16,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:55:16,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:55:16,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583867607] [2024-11-14 04:55:16,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:55:16,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:55:16,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:55:16,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:55:16,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:55:16,124 INFO L87 Difference]: Start difference. First operand 59 states and 76 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2024-11-14 04:55:16,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:55:16,223 INFO L93 Difference]: Finished difference Result 173 states and 225 transitions. [2024-11-14 04:55:16,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:55:16,224 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), 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 25 [2024-11-14 04:55:16,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:55:16,226 INFO L225 Difference]: With dead ends: 173 [2024-11-14 04:55:16,226 INFO L226 Difference]: Without dead ends: 116 [2024-11-14 04:55:16,227 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 [2024-11-14 04:55:16,227 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 68 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:55:16,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 131 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:55:16,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-14 04:55:16,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2024-11-14 04:55:16,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 70 states have (on average 1.3571428571428572) internal successors, (95), 85 states have internal predecessors, (95), 26 states have call successors, (26), 16 states have call predecessors, (26), 16 states have return successors, (26), 19 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-14 04:55:16,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 147 transitions. [2024-11-14 04:55:16,262 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 147 transitions. Word has length 25 [2024-11-14 04:55:16,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:55:16,263 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 147 transitions. [2024-11-14 04:55:16,263 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), 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) [2024-11-14 04:55:16,263 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 147 transitions. [2024-11-14 04:55:16,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 04:55:16,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:55:16,265 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] [2024-11-14 04:55:16,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 04:55:16,265 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:55:16,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:55:16,267 INFO L85 PathProgramCache]: Analyzing trace with hash -366737550, now seen corresponding path program 1 times [2024-11-14 04:55:16,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:55:16,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714463770] [2024-11-14 04:55:16,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:55:16,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:55:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:55:16,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:55:16,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:55:16,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714463770] [2024-11-14 04:55:16,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714463770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:55:16,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:55:16,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 04:55:16,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530566120] [2024-11-14 04:55:16,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:55:16,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:55:16,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:55:16,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:55:16,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:55:16,520 INFO L87 Difference]: Start difference. First operand 113 states and 147 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:55:16,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:55:16,856 INFO L93 Difference]: Finished difference Result 302 states and 399 transitions. [2024-11-14 04:55:16,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:55:16,857 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2024-11-14 04:55:16,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:55:16,859 INFO L225 Difference]: With dead ends: 302 [2024-11-14 04:55:16,859 INFO L226 Difference]: Without dead ends: 191 [2024-11-14 04:55:16,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:55:16,861 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 38 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:55:16,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 260 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:55:16,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-14 04:55:16,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2024-11-14 04:55:16,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 123 states have (on average 1.2926829268292683) internal successors, (159), 138 states have internal predecessors, (159), 36 states have call successors, (36), 30 states have call predecessors, (36), 30 states have return successors, (44), 33 states have call predecessors, (44), 36 states have call successors, (44) [2024-11-14 04:55:16,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 239 transitions. [2024-11-14 04:55:16,890 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 239 transitions. Word has length 28 [2024-11-14 04:55:16,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:55:16,890 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 239 transitions. [2024-11-14 04:55:16,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:55:16,891 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 239 transitions. [2024-11-14 04:55:16,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-14 04:55:16,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:55:16,892 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] [2024-11-14 04:55:16,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 04:55:16,893 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:55:16,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:55:16,893 INFO L85 PathProgramCache]: Analyzing trace with hash 839122833, now seen corresponding path program 1 times [2024-11-14 04:55:16,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:55:16,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182470492] [2024-11-14 04:55:16,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:55:16,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:55:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:55:17,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:55:17,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:55:17,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182470492] [2024-11-14 04:55:17,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182470492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:55:17,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:55:17,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 04:55:17,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074152479] [2024-11-14 04:55:17,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:55:17,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:55:17,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:55:17,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:55:17,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:55:17,233 INFO L87 Difference]: Start difference. First operand 190 states and 239 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) [2024-11-14 04:55:17,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:55:17,538 INFO L93 Difference]: Finished difference Result 535 states and 679 transitions. [2024-11-14 04:55:17,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:55:17,539 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 [2024-11-14 04:55:17,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:55:17,545 INFO L225 Difference]: With dead ends: 535 [2024-11-14 04:55:17,545 INFO L226 Difference]: Without dead ends: 347 [2024-11-14 04:55:17,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:55:17,550 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 112 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:55:17,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 266 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:55:17,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-14 04:55:17,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 334. [2024-11-14 04:55:17,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 220 states have (on average 1.2818181818181817) internal successors, (282), 243 states have internal predecessors, (282), 61 states have call successors, (61), 51 states have call predecessors, (61), 52 states have return successors, (78), 56 states have call predecessors, (78), 61 states have call successors, (78) [2024-11-14 04:55:17,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 421 transitions. [2024-11-14 04:55:17,625 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 421 transitions. Word has length 37 [2024-11-14 04:55:17,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:55:17,626 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 421 transitions. [2024-11-14 04:55:17,626 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) [2024-11-14 04:55:17,626 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 421 transitions. [2024-11-14 04:55:17,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-14 04:55:17,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:55:17,631 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] [2024-11-14 04:55:17,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 04:55:17,632 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:55:17,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:55:17,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1896841770, now seen corresponding path program 1 times [2024-11-14 04:55:17,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:55:17,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651730822] [2024-11-14 04:55:17,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:55:17,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:55:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:55:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:55:18,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:55:18,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651730822] [2024-11-14 04:55:18,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651730822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:55:18,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:55:18,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 04:55:18,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001321689] [2024-11-14 04:55:18,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:55:18,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 04:55:18,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:55:18,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 04:55:18,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:55:18,167 INFO L87 Difference]: Start difference. First operand 334 states and 421 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) [2024-11-14 04:55:19,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:55:19,043 INFO L93 Difference]: Finished difference Result 814 states and 1045 transitions. [2024-11-14 04:55:19,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 04:55:19,044 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 [2024-11-14 04:55:19,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:55:19,052 INFO L225 Difference]: With dead ends: 814 [2024-11-14 04:55:19,053 INFO L226 Difference]: Without dead ends: 556 [2024-11-14 04:55:19,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-11-14 04:55:19,056 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 191 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:55:19,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 293 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 04:55:19,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2024-11-14 04:55:19,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 542. [2024-11-14 04:55:19,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 360 states have (on average 1.2805555555555554) internal successors, (461), 398 states have internal predecessors, (461), 98 states have call successors, (98), 74 states have call predecessors, (98), 83 states have return successors, (129), 95 states have call predecessors, (129), 98 states have call successors, (129) [2024-11-14 04:55:19,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 688 transitions. [2024-11-14 04:55:19,196 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 688 transitions. Word has length 40 [2024-11-14 04:55:19,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:55:19,198 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 688 transitions. [2024-11-14 04:55:19,198 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) [2024-11-14 04:55:19,199 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 688 transitions. [2024-11-14 04:55:19,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-14 04:55:19,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:55:19,204 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:55:19,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 04:55:19,205 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:55:19,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:55:19,205 INFO L85 PathProgramCache]: Analyzing trace with hash 681613656, now seen corresponding path program 1 times [2024-11-14 04:55:19,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:55:19,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232251311] [2024-11-14 04:55:19,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:55:19,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:55:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:55:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:55:19,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:55:19,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232251311] [2024-11-14 04:55:19,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232251311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:55:19,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:55:19,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:55:19,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126813352] [2024-11-14 04:55:19,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:55:19,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:55:19,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:55:19,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:55:19,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:55:19,288 INFO L87 Difference]: Start difference. First operand 542 states and 688 transitions. Second operand has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-14 04:55:19,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:55:19,499 INFO L93 Difference]: Finished difference Result 907 states and 1150 transitions. [2024-11-14 04:55:19,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:55:19,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 62 [2024-11-14 04:55:19,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:55:19,503 INFO L225 Difference]: With dead ends: 907 [2024-11-14 04:55:19,503 INFO L226 Difference]: Without dead ends: 367 [2024-11-14 04:55:19,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:55:19,506 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 99 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:55:19,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 134 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:55:19,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-14 04:55:19,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 361. [2024-11-14 04:55:19,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 242 states have (on average 1.2603305785123966) internal successors, (305), 268 states have internal predecessors, (305), 64 states have call successors, (64), 50 states have call predecessors, (64), 54 states have return successors, (79), 62 states have call predecessors, (79), 64 states have call successors, (79) [2024-11-14 04:55:19,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 448 transitions. [2024-11-14 04:55:19,589 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 448 transitions. Word has length 62 [2024-11-14 04:55:19,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:55:19,590 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 448 transitions. [2024-11-14 04:55:19,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-14 04:55:19,590 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 448 transitions. [2024-11-14 04:55:19,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-14 04:55:19,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:55:19,595 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] [2024-11-14 04:55:19,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 04:55:19,595 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:55:19,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:55:19,596 INFO L85 PathProgramCache]: Analyzing trace with hash 386014574, now seen corresponding path program 1 times [2024-11-14 04:55:19,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:55:19,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558582979] [2024-11-14 04:55:19,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:55:19,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:55:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:55:19,877 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 04:55:19,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:55:19,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558582979] [2024-11-14 04:55:19,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558582979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:55:19,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109130342] [2024-11-14 04:55:19,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:55:19,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:55:19,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:55:19,881 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:55:19,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:55:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:55:20,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 04:55:20,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:55:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:55:20,235 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:55:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 04:55:20,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109130342] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:55:20,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1376296017] [2024-11-14 04:55:20,436 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2024-11-14 04:55:20,436 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:55:20,440 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:55:20,444 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:55:20,445 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:55:24,612 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 132 for LOIs [2024-11-14 04:55:24,667 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2024-11-14 04:55:24,981 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 48 for LOIs [2024-11-14 04:55:25,010 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 21 for LOIs [2024-11-14 04:55:25,062 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 22 for LOIs [2024-11-14 04:55:25,066 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:55:29,468 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7565#(and (<= |old(~waterLevel~0)| 2147483647) (= ~methaneLevelCritical~0 0) (not (= 2 ~waterLevel~0)) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (<= 2 |old(~waterLevel~0)|) (= |old(~waterLevel~0)| ~waterLevel~0) (exists ((|v_ULTIMATE.start_test_~tmp___2~0#1_18| Int)) (and (<= |v_ULTIMATE.start_test_~tmp___2~0#1_18| 2147483647) (not (= 0 |v_ULTIMATE.start_test_~tmp___2~0#1_18|)) (<= 0 (+ 2147483648 |v_ULTIMATE.start_test_~tmp___2~0#1_18|)))) (= ~switchedOnBeforeTS~0 0) (= ~pumpRunning~0 1) (= |old(~switchedOnBeforeTS~0)| 0))' at error location [2024-11-14 04:55:29,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:55:29,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:55:29,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 16 [2024-11-14 04:55:29,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562539145] [2024-11-14 04:55:29,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:55:29,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-14 04:55:29,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:55:29,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-14 04:55:29,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1677, Unknown=0, NotChecked=0, Total=1892 [2024-11-14 04:55:29,471 INFO L87 Difference]: Start difference. First operand 361 states and 448 transitions. Second operand has 16 states, 14 states have (on average 6.285714285714286) internal successors, (88), 15 states have internal predecessors, (88), 7 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2024-11-14 04:55:35,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:55:35,153 INFO L93 Difference]: Finished difference Result 4290 states and 5503 transitions. [2024-11-14 04:55:35,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-11-14 04:55:35,153 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.285714285714286) internal successors, (88), 15 states have internal predecessors, (88), 7 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 70 [2024-11-14 04:55:35,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:55:35,177 INFO L225 Difference]: With dead ends: 4290 [2024-11-14 04:55:35,177 INFO L226 Difference]: Without dead ends: 2963 [2024-11-14 04:55:35,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 214 SyntacticMatches, 5 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9391 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=2053, Invalid=21509, Unknown=0, NotChecked=0, Total=23562 [2024-11-14 04:55:35,194 INFO L432 NwaCegarLoop]: 360 mSDtfsCounter, 1099 mSDsluCounter, 2409 mSDsCounter, 0 mSdLazyCounter, 3211 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 3807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 3211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-14 04:55:35,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 2769 Invalid, 3807 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [596 Valid, 3211 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-14 04:55:35,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2024-11-14 04:55:35,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1824. [2024-11-14 04:55:35,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1242 states have (on average 1.2326892109500804) internal successors, (1531), 1351 states have internal predecessors, (1531), 298 states have call successors, (298), 260 states have call predecessors, (298), 283 states have return successors, (403), 290 states have call predecessors, (403), 298 states have call successors, (403) [2024-11-14 04:55:35,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2232 transitions. [2024-11-14 04:55:35,473 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2232 transitions. Word has length 70 [2024-11-14 04:55:35,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:55:35,474 INFO L471 AbstractCegarLoop]: Abstraction has 1824 states and 2232 transitions. [2024-11-14 04:55:35,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.285714285714286) internal successors, (88), 15 states have internal predecessors, (88), 7 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2024-11-14 04:55:35,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2232 transitions. [2024-11-14 04:55:35,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-14 04:55:35,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:55:35,482 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] [2024-11-14 04:55:35,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 04:55:35,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:55:35,683 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:55:35,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:55:35,684 INFO L85 PathProgramCache]: Analyzing trace with hash -646474578, now seen corresponding path program 1 times [2024-11-14 04:55:35,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:55:35,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257895148] [2024-11-14 04:55:35,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:55:35,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:55:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:55:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 04:55:36,000 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:55:36,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257895148] [2024-11-14 04:55:36,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257895148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:55:36,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177009677] [2024-11-14 04:55:36,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:55:36,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:55:36,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:55:36,003 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:55:36,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:55:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:55:36,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 04:55:36,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:55:36,268 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 04:55:36,268 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:55:36,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177009677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:55:36,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:55:36,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 19 [2024-11-14 04:55:36,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968071047] [2024-11-14 04:55:36,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:55:36,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 04:55:36,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:55:36,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 04:55:36,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2024-11-14 04:55:36,271 INFO L87 Difference]: Start difference. First operand 1824 states and 2232 transitions. Second operand has 10 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-14 04:55:37,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:55:37,195 INFO L93 Difference]: Finished difference Result 3204 states and 4020 transitions. [2024-11-14 04:55:37,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-14 04:55:37,195 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 73 [2024-11-14 04:55:37,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:55:37,212 INFO L225 Difference]: With dead ends: 3204 [2024-11-14 04:55:37,212 INFO L226 Difference]: Without dead ends: 2249 [2024-11-14 04:55:37,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=1025, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 04:55:37,220 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 111 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:55:37,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 563 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 04:55:37,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2249 states. [2024-11-14 04:55:37,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2249 to 1967. [2024-11-14 04:55:37,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1967 states, 1336 states have (on average 1.222305389221557) internal successors, (1633), 1459 states have internal predecessors, (1633), 325 states have call successors, (325), 285 states have call predecessors, (325), 305 states have return successors, (464), 303 states have call predecessors, (464), 325 states have call successors, (464) [2024-11-14 04:55:37,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1967 states to 1967 states and 2422 transitions. [2024-11-14 04:55:37,498 INFO L78 Accepts]: Start accepts. Automaton has 1967 states and 2422 transitions. Word has length 73 [2024-11-14 04:55:37,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:55:37,499 INFO L471 AbstractCegarLoop]: Abstraction has 1967 states and 2422 transitions. [2024-11-14 04:55:37,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-14 04:55:37,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1967 states and 2422 transitions. [2024-11-14 04:55:37,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-14 04:55:37,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:55:37,511 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:55:37,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 04:55:37,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:55:37,712 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:55:37,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:55:37,713 INFO L85 PathProgramCache]: Analyzing trace with hash -83255787, now seen corresponding path program 1 times [2024-11-14 04:55:37,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:55:37,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609289800] [2024-11-14 04:55:37,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:55:37,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:55:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:55:37,857 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-14 04:55:37,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:55:37,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609289800] [2024-11-14 04:55:37,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609289800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:55:37,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691674976] [2024-11-14 04:55:37,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:55:37,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:55:37,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:55:37,860 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:55:37,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:55:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:55:37,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 04:55:37,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:55:38,456 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 63 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 04:55:38,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:55:38,998 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 54 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-14 04:55:38,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691674976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:55:38,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [611560033] [2024-11-14 04:55:39,001 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2024-11-14 04:55:39,001 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:55:39,001 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:55:39,002 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:55:39,002 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:55:41,752 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 20 for LOIs [2024-11-14 04:55:41,756 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 25 for LOIs [2024-11-14 04:55:42,104 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 38 for LOIs [2024-11-14 04:55:42,110 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 21 for LOIs [2024-11-14 04:55:42,155 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 34 for LOIs [2024-11-14 04:55:42,164 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 53 for LOIs [2024-11-14 04:55:42,177 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:55:45,955 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25668#(and (not (= ~pumpRunning~0 0)) (<= 0 |old(~pumpRunning~0)|) (<= ~pumpRunning~0 1) (not (= 2 ~waterLevel~0)) (<= |old(~pumpRunning~0)| 2147483647) (= 1 ~systemActive~0) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (<= 0 ~pumpRunning~0) (<= ~methaneLevelCritical~0 2147483647) (<= 0 (+ ~methaneLevelCritical~0 2147483648)) (= ~switchedOnBeforeTS~0 0))' at error location [2024-11-14 04:55:45,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:55:45,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:55:45,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 24 [2024-11-14 04:55:45,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928268408] [2024-11-14 04:55:45,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:55:45,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-14 04:55:45,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:55:45,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-14 04:55:45,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=3074, Unknown=0, NotChecked=0, Total=3422 [2024-11-14 04:55:45,959 INFO L87 Difference]: Start difference. First operand 1967 states and 2422 transitions. Second operand has 24 states, 23 states have (on average 6.130434782608695) internal successors, (141), 23 states have internal predecessors, (141), 13 states have call successors, (33), 5 states have call predecessors, (33), 10 states have return successors, (32), 14 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-14 04:55:52,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:55:52,515 INFO L93 Difference]: Finished difference Result 6727 states and 8780 transitions. [2024-11-14 04:55:52,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-11-14 04:55:52,516 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.130434782608695) internal successors, (141), 23 states have internal predecessors, (141), 13 states have call successors, (33), 5 states have call predecessors, (33), 10 states have return successors, (32), 14 states have call predecessors, (32), 12 states have call successors, (32) Word has length 103 [2024-11-14 04:55:52,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:55:52,522 INFO L225 Difference]: With dead ends: 6727 [2024-11-14 04:55:52,523 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 04:55:52,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 297 SyntacticMatches, 12 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 11285 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=2644, Invalid=26426, Unknown=0, NotChecked=0, Total=29070 [2024-11-14 04:55:52,552 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 1229 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 3126 mSolverCounterSat, 939 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 4065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 939 IncrementalHoareTripleChecker+Valid, 3126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:55:52,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 1344 Invalid, 4065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [939 Valid, 3126 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-14 04:55:52,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 04:55:52,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 04:55:52,553 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) [2024-11-14 04:55:52,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 04:55:52,558 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2024-11-14 04:55:52,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:55:52,559 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 04:55:52,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.130434782608695) internal successors, (141), 23 states have internal predecessors, (141), 13 states have call successors, (33), 5 states have call predecessors, (33), 10 states have return successors, (32), 14 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-14 04:55:52,559 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 04:55:52,559 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 04:55:52,563 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 04:55:52,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 04:55:52,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-14 04:55:52,766 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:55:52,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-14 04:56:01,632 WARN L286 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 638 DAG size of output: 28 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-11-14 04:56:51,386 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 04:56:51,408 WARN L162 FloydHoareUtils]: Requires clause for deactivatePump contained old-variable. Original clause: (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (let ((.cse0 (not (= |old(~pumpRunning~0)| 0)))) (or (and .cse0 (<= ~waterLevel~0 1) (= 1 ~systemActive~0) (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|)) (and .cse0 (= 2 ~waterLevel~0) (not (= 0 ~systemActive~0)))))) Eliminated clause: (let ((.cse0 (not (= ~pumpRunning~0 0)))) (or (and .cse0 (<= ~waterLevel~0 1) (= 1 ~systemActive~0) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and .cse0 (= 2 ~waterLevel~0) (not (= 0 ~systemActive~0))))) [2024-11-14 04:56:51,440 WARN L162 FloydHoareUtils]: Requires clause for changeMethaneLevel contained old-variable. Original clause: (let ((.cse6 (= |old(~methaneLevelCritical~0)| 0))) (let ((.cse3 (not .cse6)) (.cse7 (= ~methaneLevelCritical~0 0))) (and (let ((.cse0 (= ~pumpRunning~0 0)) (.cse2 (= 2 ~waterLevel~0)) (.cse1 (= 1 ~systemActive~0)) (.cse4 (<= ~waterLevel~0 2)) (.cse5 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (or (and .cse0 .cse1 (= ~waterLevel~0 1)) (and .cse2 .cse1 (or .cse3 (= ~pumpRunning~0 1))) (and .cse0 .cse4 (= 0 ~systemActive~0) .cse5) (and .cse0 .cse3 (<= ~waterLevel~0 1) .cse1) (and .cse0 .cse2 .cse1) (and .cse6 .cse1 .cse4 .cse5))) (or .cse6 (not .cse7)) (or .cse3 .cse7)))) Eliminated clause: (exists ((|old(~methaneLevelCritical~0)| Int)) (let ((.cse5 (= |old(~methaneLevelCritical~0)| 0))) (let ((.cse3 (not .cse5)) (.cse6 (= ~methaneLevelCritical~0 0))) (and (let ((.cse0 (= ~pumpRunning~0 0)) (.cse2 (= 2 ~waterLevel~0)) (.cse1 (= 1 ~systemActive~0)) (.cse4 (<= ~waterLevel~0 2))) (or (and .cse0 .cse1 (= ~waterLevel~0 1)) (and .cse2 .cse1 (or .cse3 (= ~pumpRunning~0 1))) (and .cse0 .cse4 (= 0 ~systemActive~0) (= ~switchedOnBeforeTS~0 0)) (and .cse0 .cse3 (<= ~waterLevel~0 1) .cse1) (and .cse0 .cse2 .cse1) (and .cse5 .cse1 .cse4 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)))) (or .cse5 (not .cse6)) (or .cse3 .cse6))))) [2024-11-14 04:56:51,449 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-14 04:56:51,459 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse0 (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (.cse5 (not (= ~switchedOnBeforeTS~0 0))) (.cse1 (= |old(~pumpRunning~0)| 0)) (.cse2 (= 0 ~systemActive~0)) (.cse6 (= |old(~switchedOnBeforeTS~0)| 0))) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or (not .cse0) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (let ((.cse3 (= 1 ~systemActive~0)) (.cse4 (<= |old(~waterLevel~0)| 1))) (or (and .cse1 .cse2 (<= |old(~waterLevel~0)| 2)) (and .cse3 .cse0 .cse4) (and .cse3 (= |old(~waterLevel~0)| 2)) (and .cse3 .cse1 .cse4))) (= |old(~waterLevel~0)| ~waterLevel~0) (or .cse5 (= 2 ~waterLevel~0) .cse6) (or .cse5 (not .cse1) .cse2 .cse6))) Eliminated clause: (exists ((|old(~switchedOnBeforeTS~0)| Int)) (let ((.cse0 (= ~pumpRunning~0 |old(~switchedOnBeforeTS~0)|)) (.cse4 (= ~pumpRunning~0 0)) (.cse5 (= 0 ~systemActive~0)) (.cse6 (not (= ~switchedOnBeforeTS~0 0))) (.cse3 (= 2 ~waterLevel~0)) (.cse7 (= |old(~switchedOnBeforeTS~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (let ((.cse1 (<= ~waterLevel~0 1)) (.cse2 (= 1 ~systemActive~0))) (or (and .cse1 .cse2 .cse0) (and .cse3 .cse2) (and .cse4 .cse1 .cse2) (and .cse4 (<= ~waterLevel~0 2) .cse5))) (or .cse6 (not .cse4) .cse5 .cse7) (or .cse6 .cse3 .cse7)))) [2024-11-14 04:56:51,475 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-14 04:56:51,489 WARN L162 FloydHoareUtils]: Requires clause for waterRise contained old-variable. Original clause: (and (= |old(~waterLevel~0)| ~waterLevel~0) (let ((.cse1 (= ~methaneLevelCritical~0 0)) (.cse0 (= |old(~waterLevel~0)| 1))) (let ((.cse3 (= ~pumpRunning~0 1)) (.cse4 (or (< |old(~waterLevel~0)| 1) .cse0)) (.cse5 (= ~pumpRunning~0 0)) (.cse8 (= 0 ~systemActive~0)) (.cse9 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse2 (= 1 ~systemActive~0)) (.cse6 (not .cse1)) (.cse7 (= |old(~waterLevel~0)| 2))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse2 .cse6) (and .cse5 .cse2 .cse7) (and .cse5 .cse8 .cse9 .cse7) (and .cse5 .cse0 .cse2) (and .cse1 .cse2 (<= |old(~waterLevel~0)| 1) .cse9) (and .cse2 .cse7 .cse3) (and .cse4 .cse5 .cse8 .cse9) (and .cse2 .cse6 .cse7))))) Eliminated clause: (let ((.cse2 (= ~waterLevel~0 1)) (.cse8 (= ~methaneLevelCritical~0 0))) (let ((.cse6 (= ~pumpRunning~0 1)) (.cse4 (= 0 ~systemActive~0)) (.cse5 (= ~switchedOnBeforeTS~0 0)) (.cse7 (not .cse8)) (.cse9 (or (< ~waterLevel~0 1) .cse2)) (.cse0 (= ~pumpRunning~0 0)) (.cse3 (= 2 ~waterLevel~0)) (.cse1 (= 1 ~systemActive~0))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse4 .cse5) (and .cse3 .cse1 .cse6) (and .cse3 .cse1 .cse7) (and .cse8 .cse1 .cse2 .cse6) (and .cse0 .cse4 .cse9 .cse5) (and .cse0 .cse1 .cse7 .cse9) (and .cse0 .cse3 .cse1) (and .cse8 (<= ~waterLevel~0 1) .cse1 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))))) [2024-11-14 04:56:51,507 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__methaneQuery contained old-variable. Original clause: (and (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (<= ~waterLevel~0 2)) (.cse2 (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|))) (or (and .cse0 (= |old(~pumpRunning~0)| 0) .cse1 .cse2) (and (= ~methaneLevelCritical~0 0) .cse0 .cse1 .cse2))) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) Eliminated clause: (and (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (<= ~waterLevel~0 2))) (or (and (= ~methaneLevelCritical~0 0) .cse0 .cse1) (and .cse0 .cse1 (= ~switchedOnBeforeTS~0 0)))) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) [2024-11-14 04:56:51,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:56:51 BoogieIcfgContainer [2024-11-14 04:56:51,522 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 04:56:51,523 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 04:56:51,523 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 04:56:51,523 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 04:56:51,524 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:55:15" (3/4) ... [2024-11-14 04:56:51,526 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 04:56:51,529 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2024-11-14 04:56:51,529 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-14 04:56:51,529 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-14 04:56:51,529 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-14 04:56:51,530 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-14 04:56:51,530 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-14 04:56:51,530 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2024-11-14 04:56:51,530 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2024-11-14 04:56:51,530 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2024-11-14 04:56:51,536 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 44 nodes and edges [2024-11-14 04:56:51,537 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-14 04:56:51,537 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-14 04:56:51,537 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 04:56:51,538 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 04:56:51,636 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 04:56:51,636 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-14 04:56:51,636 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 04:56:51,637 INFO L158 Benchmark]: Toolchain (without parser) took 97826.23ms. Allocated memory was 117.4MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 91.9MB in the beginning and 1.0GB in the end (delta: -957.9MB). Peak memory consumption was 611.1MB. Max. memory is 16.1GB. [2024-11-14 04:56:51,637 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 117.4MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:56:51,637 INFO L158 Benchmark]: CACSL2BoogieTranslator took 554.30ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 72.8MB in the end (delta: 18.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:56:51,637 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.91ms. Allocated memory is still 117.4MB. Free memory was 72.8MB in the beginning and 70.9MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:56:51,638 INFO L158 Benchmark]: Boogie Preprocessor took 43.73ms. Allocated memory is still 117.4MB. Free memory was 70.9MB in the beginning and 69.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:56:51,638 INFO L158 Benchmark]: RCFGBuilder took 704.65ms. Allocated memory is still 117.4MB. Free memory was 69.6MB in the beginning and 43.3MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 04:56:51,638 INFO L158 Benchmark]: TraceAbstraction took 96361.99ms. Allocated memory was 117.4MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 42.7MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 977.4MB. Max. memory is 16.1GB. [2024-11-14 04:56:51,638 INFO L158 Benchmark]: Witness Printer took 113.31ms. Allocated memory is still 1.7GB. Free memory was 1.1GB in the beginning and 1.0GB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:56:51,640 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 117.4MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 554.30ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 72.8MB in the end (delta: 18.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.91ms. Allocated memory is still 117.4MB. Free memory was 72.8MB in the beginning and 70.9MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.73ms. Allocated memory is still 117.4MB. Free memory was 70.9MB in the beginning and 69.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 704.65ms. Allocated memory is still 117.4MB. Free memory was 69.6MB in the beginning and 43.3MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 96361.99ms. Allocated memory was 117.4MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 42.7MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 977.4MB. Max. memory is 16.1GB. * Witness Printer took 113.31ms. Allocated memory is still 1.7GB. Free memory was 1.1GB in the beginning and 1.0GB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [49] - GenericResultAtLocation [Line: 415]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [415] - GenericResultAtLocation [Line: 424]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [424] - GenericResultAtLocation [Line: 499]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [499] - GenericResultAtLocation [Line: 730]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [730] - GenericResultAtLocation [Line: 825]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [825] - GenericResultAtLocation [Line: 926]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [926] - GenericResultAtLocation [Line: 975]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [975] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 420]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 37.5s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 15.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2990 SdHoareTripleChecker+Valid, 7.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2961 mSDsluCounter, 5941 SdHoareTripleChecker+Invalid, 6.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4807 mSDsCounter, 1714 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7806 IncrementalHoareTripleChecker+Invalid, 9520 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1714 mSolverCounterUnsat, 1134 mSDtfsCounter, 7806 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1003 GetRequests, 604 SyntacticMatches, 17 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 20877 ImplicationChecksByTransitivity, 14.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1967occurred in iteration=9, InterpolantAutomatonStates: 294, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 1458 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 727 NumberOfCodeBlocks, 727 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 885 ConstructedInterpolants, 0 QuantifiedInterpolants, 2283 SizeOfPredicates, 10 NumberOfNonLiveVariables, 913 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 393/446 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: 440]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 632]: Location Invariant Derived location invariant: (((((pumpRunning != 0) && (1 == systemActive)) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS)) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == switchedOnBeforeTS))) - InvariantResult [Line: 837]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 441]: Loop Invariant Derived loop invariant: ((((((((((((pumpRunning == 0) && (waterLevel <= 1)) && (1 == systemActive)) && (methaneLevelCritical != 0)) && (splverifierCounter == 0)) || (((((methaneLevelCritical == 0) && (waterLevel <= 1)) && (1 == systemActive)) && (splverifierCounter == 0)) && (pumpRunning == switchedOnBeforeTS))) || ((((pumpRunning == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1))) || ((((2 == waterLevel) && (1 == systemActive)) && (methaneLevelCritical != 0)) && (splverifierCounter == 0))) || (((((pumpRunning == 0) && (splverifierCounter == 0)) && (0 == systemActive)) && ((waterLevel < 1) || (waterLevel == 1))) && (switchedOnBeforeTS == 0))) || ((((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive)) && (splverifierCounter == 0))) || (((((pumpRunning == 0) && (2 == waterLevel)) && (splverifierCounter == 0)) && (0 == systemActive)) && (switchedOnBeforeTS == 0))) || ((((2 == waterLevel) && (1 == systemActive)) && (splverifierCounter == 0)) && (pumpRunning == 1))) - ProcedureContractResult [Line: 624]: Procedure Contract for deactivatePump Derived contract for procedure deactivatePump. Requires: (((((pumpRunning != 0) && (waterLevel <= 1)) && (1 == systemActive)) && (pumpRunning == switchedOnBeforeTS)) || (((pumpRunning != 0) && (2 == waterLevel)) && (0 != systemActive))) Ensures: ((((((\old(pumpRunning) != 0) && (2 == waterLevel)) || ((((\old(pumpRunning) != 0) && (waterLevel <= 1)) && (1 == systemActive)) && (switchedOnBeforeTS == \old(pumpRunning)))) && (pumpRunning == 0)) && (0 != systemActive)) && ((((((head == \old(head)) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS)))) - ProcedureContractResult [Line: 540]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: (((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0)) || ((((methaneLevelCritical == 0) && (1 == systemActive)) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS))) Ensures: ((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0)) || ((((methaneLevelCritical == 0) && (1 == systemActive)) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS))) && (((((((head == \old(head)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS)))) - ProcedureContractResult [Line: 758]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Ensures: (((((((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) || (((2 == waterLevel) && (1 == systemActive)) && ((\old(methaneLevelCritical) != 0) || (pumpRunning == 1)))) || ((((pumpRunning == 0) && (waterLevel <= 2)) && (0 == systemActive)) && (switchedOnBeforeTS == 0))) || ((((pumpRunning == 0) && (\old(methaneLevelCritical) != 0)) && (waterLevel <= 1)) && (1 == systemActive))) || (((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive))) || ((((\old(methaneLevelCritical) == 0) && (1 == systemActive)) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS))) && ((methaneLevelCritical == 0) || (\old(methaneLevelCritical) == 0))) && ((\old(methaneLevelCritical) != 0) || (methaneLevelCritical != 0))) && ((((((head == \old(head)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS)))) - ProcedureContractResult [Line: 827]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((head == \old(head)) && (systemActive == \old(systemActive))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 513]: Procedure Contract for timeShift Derived contract for procedure timeShift. Ensures: (((((((((((((\old(pumpRunning) != 0) || (2 == waterLevel)) || (\old(waterLevel) != 2)) && (((methaneLevelCritical == 0) || (\old(pumpRunning) == 0)) || (((switchedOnBeforeTS != 0) && (pumpRunning == 0)) && (((\old(waterLevel) == ((long long) waterLevel + 1)) && (1 <= \old(waterLevel))) || ((\old(waterLevel) <= 0) && (\old(waterLevel) == waterLevel)))))) && ((((\old(pumpRunning) != 0) || ((\old(waterLevel) != 1) && (1 <= \old(waterLevel)))) || ((((pumpRunning == 0) && (1 == systemActive)) && (\old(waterLevel) == waterLevel)) && (switchedOnBeforeTS == 0))) || (0 == systemActive))) && (((((\old(pumpRunning) == 0) && (\old(waterLevel) <= 1)) || ((0 == systemActive) && (\old(waterLevel) <= 2))) || ((1 == systemActive) && (\old(waterLevel) == 2))) || (((1 == systemActive) && (\old(switchedOnBeforeTS) == \old(pumpRunning))) && (\old(waterLevel) <= 2)))) && (((((\old(pumpRunning) == 0) || (methaneLevelCritical != 0)) || (\old(waterLevel) != 2)) || ((2 == waterLevel) && (pumpRunning == 1))) || (((pumpRunning == \old(pumpRunning)) && (waterLevel == 1)) && (pumpRunning == switchedOnBeforeTS)))) && ((((\old(switchedOnBeforeTS) != \old(pumpRunning)) || (((pumpRunning == \old(pumpRunning)) && (((\old(waterLevel) == ((long long) waterLevel + 1)) && (1 <= \old(waterLevel))) || ((\old(waterLevel) <= 0) && (\old(waterLevel) == waterLevel)))) && (pumpRunning == switchedOnBeforeTS))) || (methaneLevelCritical != 0)) || (\old(switchedOnBeforeTS) == 0))) && (((\old(pumpRunning) != 1) || (\old(waterLevel) != 2)) || (waterLevel == 1))) && ((((pumpRunning == 0) && (\old(waterLevel) == waterLevel)) && (switchedOnBeforeTS == 0)) || (0 != systemActive))) && (((((\old(pumpRunning) != 0) || (methaneLevelCritical != 0)) || ((((pumpRunning == 0) && (1 == systemActive)) && (\old(waterLevel) == waterLevel)) && (switchedOnBeforeTS == 0))) || (0 == systemActive)) || ((2 == waterLevel) && (pumpRunning == 1)))) && ((\old(pumpRunning) == 0) || (0 != systemActive))) && ((((head == \old(head)) && (systemActive == \old(systemActive))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 746]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: (((((((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) || ((((pumpRunning == 0) && (2 == waterLevel)) && (0 == systemActive)) && (switchedOnBeforeTS == 0))) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == 1))) || (((2 == waterLevel) && (1 == systemActive)) && (methaneLevelCritical != 0))) || ((((methaneLevelCritical == 0) && (1 == systemActive)) && (waterLevel == 1)) && (pumpRunning == 1))) || ((((pumpRunning == 0) && (0 == systemActive)) && ((waterLevel < 1) || (waterLevel == 1))) && (switchedOnBeforeTS == 0))) || ((((pumpRunning == 0) && (1 == systemActive)) && (methaneLevelCritical != 0)) && ((waterLevel < 1) || (waterLevel == 1)))) || (((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive))) || ((((methaneLevelCritical == 0) && (waterLevel <= 1)) && (1 == systemActive)) && (pumpRunning == switchedOnBeforeTS))) Ensures: (((((1 < \old(waterLevel)) || (((long long) \old(waterLevel) + 1) == waterLevel)) && ((2 == waterLevel) || (\old(waterLevel) != 2))) && ((((((((((((\old(waterLevel) == 1) && (methaneLevelCritical == 0)) && (1 == systemActive)) && (pumpRunning == 1)) || (((((\old(waterLevel) < 1) || (\old(waterLevel) == 1)) && (pumpRunning == 0)) && (1 == systemActive)) && (methaneLevelCritical != 0))) || (((((\old(waterLevel) < 1) || (\old(waterLevel) == 1)) && (pumpRunning == 0)) && (0 == systemActive)) && (switchedOnBeforeTS == 0))) || (((pumpRunning == 0) && (1 == systemActive)) && (\old(waterLevel) == 2))) || (((pumpRunning == 0) && (\old(waterLevel) == 1)) && (1 == systemActive))) || ((((pumpRunning == 0) && (0 == systemActive)) && (switchedOnBeforeTS == 0)) && (\old(waterLevel) == 2))) || ((((methaneLevelCritical == 0) && (1 == systemActive)) && (\old(waterLevel) <= 1)) && (pumpRunning == switchedOnBeforeTS))) || (((1 == systemActive) && (\old(waterLevel) == 2)) && (pumpRunning == 1))) || (((1 == systemActive) && (methaneLevelCritical != 0)) && (\old(waterLevel) == 2)))) && ((((((head == \old(head)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS)))) - ProcedureContractResult [Line: 548]: Procedure Contract for processEnvironment__wrappee__methaneQuery Derived contract for procedure processEnvironment__wrappee__methaneQuery. Requires: (((((methaneLevelCritical == 0) && (1 == systemActive)) && (waterLevel <= 2)) || (((1 == systemActive) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0))) && (pumpRunning == switchedOnBeforeTS)) Ensures: (((((((\old(pumpRunning) != 0) || (pumpRunning == 0)) || ((waterLevel != 1) && (1 <= waterLevel))) && (((((1 == systemActive) && (\old(pumpRunning) == 0)) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0)) || ((((methaneLevelCritical == 0) && (1 == systemActive)) && (waterLevel <= 2)) && (switchedOnBeforeTS == \old(pumpRunning))))) && ((pumpRunning == switchedOnBeforeTS) || (switchedOnBeforeTS == 0))) && ((((\old(pumpRunning) != 0) || (pumpRunning == 0)) || (methaneLevelCritical != 0)) || (pumpRunning == 1))) && ((((((head == \old(head)) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS)))) - ProcedureContractResult [Line: 643]: Procedure Contract for isPumpRunning Derived contract for procedure isPumpRunning. Requires: ((((((pumpRunning == 0) && (1 == systemActive)) && ((waterLevel < 1) || (waterLevel == 1))) || ((2 == waterLevel) && (1 == systemActive))) || (((waterLevel <= 1) && (1 == systemActive)) && (pumpRunning == switchedOnBeforeTS))) || (((pumpRunning == 0) && (waterLevel <= 2)) && (0 == systemActive))) Ensures: (((((((((pumpRunning == 0) && (1 == systemActive)) && ((waterLevel < 1) || (waterLevel == 1))) || ((2 == waterLevel) && (1 == systemActive))) || ((waterLevel <= 2) && (0 == systemActive))) || (((waterLevel <= 1) && (1 == systemActive)) && (pumpRunning == switchedOnBeforeTS))) && (pumpRunning == \result)) && ((\result == 0) || (0 != systemActive))) && (((((((head == \old(head)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS)))) - ProcedureContractResult [Line: 632]: Procedure Contract for isMethaneAlarm Derived contract for procedure isMethaneAlarm. Requires: (((((pumpRunning != 0) && (1 == systemActive)) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS)) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == switchedOnBeforeTS))) Ensures: (((((((pumpRunning != 0) && (1 == systemActive)) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS)) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == switchedOnBeforeTS))) && (methaneLevelCritical == \result)) && (((((((head == \old(head)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS)))) RESULT: Ultimate proved your program to be correct! [2024-11-14 04:56:51,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bbfef38-b1df-4ed1-b550-937dea137b69/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE