./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product60.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_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/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_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product60.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/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_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/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 63a498e40ee7fb7960293994084186ed238562f61fafb5e109bd8b394667fc1f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:05:11,542 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:05:11,636 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:05:11,645 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:05:11,645 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:05:11,685 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:05:11,687 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:05:11,687 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:05:11,688 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:05:11,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:05:11,689 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:05:11,689 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:05:11,690 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:05:11,690 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:05:11,690 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:05:11,691 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:05:11,691 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:05:11,691 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:05:11,691 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:05:11,691 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:05:11,691 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:05:11,691 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:05:11,692 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:05:11,692 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:05:11,692 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:05:11,693 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:05:11,693 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:05:11,693 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:05:11,693 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:05:11,693 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:05:11,693 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:05:11,693 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:05:11,694 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:05:11,694 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:05:11,694 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:05:11,694 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:05:11,694 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:05:11,694 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:05:11,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:05:11,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:05:11,694 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:05:11,694 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:05:11,694 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:05:11,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:05:11,695 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:05:11,695 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:05:11,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:05:11,695 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_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/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 -> 63a498e40ee7fb7960293994084186ed238562f61fafb5e109bd8b394667fc1f [2024-11-14 03:05:12,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:05:12,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:05:12,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:05:12,051 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:05:12,051 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:05:12,054 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/product-lines/minepump_spec4_product60.cil.c Unable to find full path for "g++" [2024-11-14 03:05:13,872 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:05:14,217 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:05:14,218 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/sv-benchmarks/c/product-lines/minepump_spec4_product60.cil.c [2024-11-14 03:05:14,233 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/data/e2faf289b/f74de1a2590e4f0789b06352ad5cd3e9/FLAG48aa5e854 [2024-11-14 03:05:14,253 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/data/e2faf289b/f74de1a2590e4f0789b06352ad5cd3e9 [2024-11-14 03:05:14,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:05:14,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:05:14,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:05:14,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:05:14,267 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:05:14,268 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:05:14" (1/1) ... [2024-11-14 03:05:14,270 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dfe2769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:05:14, skipping insertion in model container [2024-11-14 03:05:14,271 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:05:14" (1/1) ... [2024-11-14 03:05:14,320 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:05:14,665 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_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/sv-benchmarks/c/product-lines/minepump_spec4_product60.cil.c[13463,13476] [2024-11-14 03:05:14,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:05:14,708 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:05:14,717 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [49] [2024-11-14 03:05:14,719 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [87] [2024-11-14 03:05:14,719 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [188] [2024-11-14 03:05:14,719 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [554] [2024-11-14 03:05:14,720 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [583] [2024-11-14 03:05:14,720 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [592] [2024-11-14 03:05:14,720 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [839] [2024-11-14 03:05:14,720 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [908] [2024-11-14 03:05:14,812 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_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/sv-benchmarks/c/product-lines/minepump_spec4_product60.cil.c[13463,13476] [2024-11-14 03:05:14,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:05:14,876 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:05:14,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:05:14 WrapperNode [2024-11-14 03:05:14,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:05:14,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:05:14,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:05:14,878 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:05:14,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:05:14" (1/1) ... [2024-11-14 03:05:14,905 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:05:14" (1/1) ... [2024-11-14 03:05:14,934 INFO L138 Inliner]: procedures = 58, calls = 103, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 232 [2024-11-14 03:05:14,934 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:05:14,935 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:05:14,935 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:05:14,935 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:05:14,944 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:05:14" (1/1) ... [2024-11-14 03:05:14,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:05:14" (1/1) ... [2024-11-14 03:05:14,946 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:05:14" (1/1) ... [2024-11-14 03:05:14,946 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:05:14" (1/1) ... [2024-11-14 03:05:14,963 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:05:14" (1/1) ... [2024-11-14 03:05:14,970 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:05:14" (1/1) ... [2024-11-14 03:05:14,976 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:05:14" (1/1) ... [2024-11-14 03:05:14,981 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:05:14" (1/1) ... [2024-11-14 03:05:14,983 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:05:14,984 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:05:14,984 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:05:14,984 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:05:14,985 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:05:14" (1/1) ... [2024-11-14 03:05:15,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:05:15,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:05:15,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:05:15,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:05:15,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:05:15,070 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-14 03:05:15,070 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-14 03:05:15,070 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-14 03:05:15,071 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-14 03:05:15,071 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-14 03:05:15,071 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-14 03:05:15,071 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2024-11-14 03:05:15,071 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2024-11-14 03:05:15,071 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-14 03:05:15,071 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-14 03:05:15,072 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2024-11-14 03:05:15,072 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2024-11-14 03:05:15,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:05:15,073 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-14 03:05:15,073 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-14 03:05:15,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:05:15,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:05:15,193 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:05:15,195 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:05:15,595 INFO L? ?]: Removed 52 outVars from TransFormulas that were not future-live. [2024-11-14 03:05:15,595 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:05:15,751 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:05:15,751 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 03:05:15,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:05:15 BoogieIcfgContainer [2024-11-14 03:05:15,752 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:05:15,755 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:05:15,755 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:05:15,760 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:05:15,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:05:14" (1/3) ... [2024-11-14 03:05:15,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a25fb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:05:15, skipping insertion in model container [2024-11-14 03:05:15,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:05:14" (2/3) ... [2024-11-14 03:05:15,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a25fb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:05:15, skipping insertion in model container [2024-11-14 03:05:15,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:05:15" (3/3) ... [2024-11-14 03:05:15,764 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product60.cil.c [2024-11-14 03:05:15,781 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:05:15,782 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG minepump_spec4_product60.cil.c that has 8 procedures, 59 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-14 03:05:15,859 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:05:15,872 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;@73e25aab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:05:15,873 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:05:15,876 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 47 states have internal predecessors, (56), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-14 03:05:15,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 03:05:15,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:05:15,883 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:05:15,884 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:05:15,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:05:15,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1048429338, now seen corresponding path program 1 times [2024-11-14 03:05:15,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:05:15,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351980888] [2024-11-14 03:05:15,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:05:15,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:05:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:16,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:05:16,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:05:16,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351980888] [2024-11-14 03:05:16,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351980888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:05:16,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:05:16,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:05:16,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280244901] [2024-11-14 03:05:16,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:05:16,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 03:05:16,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:05:16,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 03:05:16,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 03:05:16,149 INFO L87 Difference]: Start difference. First operand has 59 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 47 states have internal predecessors, (56), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:05:16,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:05:16,230 INFO L93 Difference]: Finished difference Result 116 states and 161 transitions. [2024-11-14 03:05:16,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 03:05:16,233 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-14 03:05:16,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:05:16,241 INFO L225 Difference]: With dead ends: 116 [2024-11-14 03:05:16,242 INFO L226 Difference]: Without dead ends: 54 [2024-11-14 03:05:16,246 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 03:05:16,251 INFO L432 NwaCegarLoop]: 59 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, 59 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 03:05:16,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:05:16,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-14 03:05:16,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-14 03:05:16,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 43 states have internal predecessors, (48), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-14 03:05:16,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 71 transitions. [2024-11-14 03:05:16,292 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 71 transitions. Word has length 12 [2024-11-14 03:05:16,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:05:16,292 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 71 transitions. [2024-11-14 03:05:16,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:05:16,293 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 71 transitions. [2024-11-14 03:05:16,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 03:05:16,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:05:16,295 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:05:16,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:05:16,295 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:05:16,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:05:16,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1496961170, now seen corresponding path program 1 times [2024-11-14 03:05:16,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:05:16,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927458119] [2024-11-14 03:05:16,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:05:16,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:05:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:05:16,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:05:16,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927458119] [2024-11-14 03:05:16,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927458119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:05:16,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:05:16,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:05:16,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326875386] [2024-11-14 03:05:16,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:05:16,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:05:16,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:05:16,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:05:16,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:05:16,402 INFO L87 Difference]: Start difference. First operand 54 states and 71 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:05:16,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:05:16,482 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2024-11-14 03:05:16,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:05:16,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-14 03:05:16,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:05:16,484 INFO L225 Difference]: With dead ends: 80 [2024-11-14 03:05:16,484 INFO L226 Difference]: Without dead ends: 46 [2024-11-14 03:05:16,485 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 03:05:16,485 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 14 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 74 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 03:05:16,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 74 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:05:16,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-14 03:05:16,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-14 03:05:16,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.4) internal successors, (42), 38 states have internal predecessors, (42), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 03:05:16,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2024-11-14 03:05:16,504 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 13 [2024-11-14 03:05:16,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:05:16,504 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2024-11-14 03:05:16,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:05:16,505 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2024-11-14 03:05:16,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 03:05:16,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:05:16,506 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:05:16,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 03:05:16,506 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:05:16,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:05:16,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1831301554, now seen corresponding path program 1 times [2024-11-14 03:05:16,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:05:16,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955056630] [2024-11-14 03:05:16,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:05:16,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:05:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:16,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:05:16,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:05:16,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955056630] [2024-11-14 03:05:16,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955056630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:05:16,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:05:16,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:05:16,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504498654] [2024-11-14 03:05:16,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:05:16,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:05:16,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:05:16,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:05:16,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:05:16,629 INFO L87 Difference]: Start difference. First operand 46 states and 60 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:05:16,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:05:16,771 INFO L93 Difference]: Finished difference Result 134 states and 177 transitions. [2024-11-14 03:05:16,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:05:16,775 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-14 03:05:16,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:05:16,777 INFO L225 Difference]: With dead ends: 134 [2024-11-14 03:05:16,779 INFO L226 Difference]: Without dead ends: 90 [2024-11-14 03:05:16,780 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 03:05:16,781 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 54 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:05:16,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 93 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:05:16,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-14 03:05:16,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2024-11-14 03:05:16,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 71 states have internal predecessors, (79), 18 states have call successors, (18), 12 states have call predecessors, (18), 12 states have return successors, (18), 11 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-14 03:05:16,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 115 transitions. [2024-11-14 03:05:16,817 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 115 transitions. Word has length 16 [2024-11-14 03:05:16,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:05:16,820 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 115 transitions. [2024-11-14 03:05:16,820 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:05:16,820 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 115 transitions. [2024-11-14 03:05:16,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-14 03:05:16,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:05:16,821 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:05:16,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:05:16,821 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:05:16,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:05:16,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1778530605, now seen corresponding path program 1 times [2024-11-14 03:05:16,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:05:16,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069342808] [2024-11-14 03:05:16,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:05:16,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:05:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:16,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:05:16,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:05:16,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069342808] [2024-11-14 03:05:16,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069342808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:05:16,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:05:16,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:05:16,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847065148] [2024-11-14 03:05:16,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:05:16,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:05:16,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:05:16,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:05:16,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:05:16,963 INFO L87 Difference]: Start difference. First operand 87 states and 115 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:05:17,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:05:17,120 INFO L93 Difference]: Finished difference Result 234 states and 319 transitions. [2024-11-14 03:05:17,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:05:17,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-14 03:05:17,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:05:17,123 INFO L225 Difference]: With dead ends: 234 [2024-11-14 03:05:17,123 INFO L226 Difference]: Without dead ends: 149 [2024-11-14 03:05:17,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:05:17,125 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 31 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:05:17,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 126 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:05:17,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-14 03:05:17,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2024-11-14 03:05:17,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 101 states have (on average 1.3366336633663367) internal successors, (135), 116 states have internal predecessors, (135), 24 states have call successors, (24), 22 states have call predecessors, (24), 22 states have return successors, (32), 21 states have call predecessors, (32), 24 states have call successors, (32) [2024-11-14 03:05:17,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 191 transitions. [2024-11-14 03:05:17,152 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 191 transitions. Word has length 19 [2024-11-14 03:05:17,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:05:17,152 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 191 transitions. [2024-11-14 03:05:17,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:05:17,153 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 191 transitions. [2024-11-14 03:05:17,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 03:05:17,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:05:17,155 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:05:17,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 03:05:17,156 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:05:17,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:05:17,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1575736037, now seen corresponding path program 1 times [2024-11-14 03:05:17,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:05:17,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274934230] [2024-11-14 03:05:17,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:05:17,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:05:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:17,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:05:17,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:05:17,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274934230] [2024-11-14 03:05:17,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274934230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:05:17,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:05:17,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:05:17,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134310811] [2024-11-14 03:05:17,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:05:17,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:05:17,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:05:17,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:05:17,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:05:17,465 INFO L87 Difference]: Start difference. First operand 148 states and 191 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:05:17,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:05:17,674 INFO L93 Difference]: Finished difference Result 410 states and 533 transitions. [2024-11-14 03:05:17,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:05:17,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-14 03:05:17,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:05:17,677 INFO L225 Difference]: With dead ends: 410 [2024-11-14 03:05:17,678 INFO L226 Difference]: Without dead ends: 264 [2024-11-14 03:05:17,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:05:17,680 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 54 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:05:17,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 182 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:05:17,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-14 03:05:17,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 248. [2024-11-14 03:05:17,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 175 states have (on average 1.3085714285714285) internal successors, (229), 195 states have internal predecessors, (229), 35 states have call successors, (35), 33 states have call predecessors, (35), 37 states have return successors, (47), 36 states have call predecessors, (47), 35 states have call successors, (47) [2024-11-14 03:05:17,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 311 transitions. [2024-11-14 03:05:17,755 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 311 transitions. Word has length 24 [2024-11-14 03:05:17,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:05:17,755 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 311 transitions. [2024-11-14 03:05:17,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:05:17,756 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 311 transitions. [2024-11-14 03:05:17,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 03:05:17,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:05:17,757 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:05:17,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 03:05:17,758 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:05:17,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:05:17,758 INFO L85 PathProgramCache]: Analyzing trace with hash -2087416842, now seen corresponding path program 1 times [2024-11-14 03:05:17,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:05:17,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435344812] [2024-11-14 03:05:17,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:05:17,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:05:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:05:18,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:05:18,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435344812] [2024-11-14 03:05:18,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435344812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:05:18,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:05:18,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 03:05:18,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470451283] [2024-11-14 03:05:18,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:05:18,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:05:18,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:05:18,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:05:18,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:05:18,151 INFO L87 Difference]: Start difference. First operand 248 states and 311 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:05:18,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:05:18,793 INFO L93 Difference]: Finished difference Result 674 states and 880 transitions. [2024-11-14 03:05:18,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 03:05:18,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-14 03:05:18,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:05:18,802 INFO L225 Difference]: With dead ends: 674 [2024-11-14 03:05:18,805 INFO L226 Difference]: Without dead ends: 528 [2024-11-14 03:05:18,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-14 03:05:18,809 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 211 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:05:18,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 235 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:05:18,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-11-14 03:05:18,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 470. [2024-11-14 03:05:18,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 333 states have (on average 1.2882882882882882) internal successors, (429), 370 states have internal predecessors, (429), 66 states have call successors, (66), 58 states have call predecessors, (66), 70 states have return successors, (92), 69 states have call predecessors, (92), 66 states have call successors, (92) [2024-11-14 03:05:18,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 587 transitions. [2024-11-14 03:05:18,923 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 587 transitions. Word has length 27 [2024-11-14 03:05:18,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:05:18,924 INFO L471 AbstractCegarLoop]: Abstraction has 470 states and 587 transitions. [2024-11-14 03:05:18,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:05:18,924 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 587 transitions. [2024-11-14 03:05:18,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-14 03:05:18,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:05:18,931 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:05:18,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 03:05:18,932 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:05:18,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:05:18,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1750292975, now seen corresponding path program 1 times [2024-11-14 03:05:18,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:05:18,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870196484] [2024-11-14 03:05:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:05:18,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:05:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:18,994 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:05:18,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:05:18,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870196484] [2024-11-14 03:05:18,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870196484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:05:18,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:05:18,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:05:18,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76923658] [2024-11-14 03:05:18,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:05:18,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:05:18,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:05:18,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:05:18,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:05:18,998 INFO L87 Difference]: Start difference. First operand 470 states and 587 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:05:19,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:05:19,193 INFO L93 Difference]: Finished difference Result 800 states and 1002 transitions. [2024-11-14 03:05:19,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:05:19,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-14 03:05:19,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:05:19,196 INFO L225 Difference]: With dead ends: 800 [2024-11-14 03:05:19,200 INFO L226 Difference]: Without dead ends: 332 [2024-11-14 03:05:19,202 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 03:05:19,202 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 76 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:05:19,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 100 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:05:19,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-14 03:05:19,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 324. [2024-11-14 03:05:19,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 233 states have (on average 1.2703862660944205) internal successors, (296), 259 states have internal predecessors, (296), 44 states have call successors, (44), 40 states have call predecessors, (44), 46 states have return successors, (57), 46 states have call predecessors, (57), 44 states have call successors, (57) [2024-11-14 03:05:19,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 397 transitions. [2024-11-14 03:05:19,253 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 397 transitions. Word has length 42 [2024-11-14 03:05:19,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:05:19,253 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 397 transitions. [2024-11-14 03:05:19,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:05:19,254 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 397 transitions. [2024-11-14 03:05:19,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-14 03:05:19,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:05:19,257 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 03:05:19,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 03:05:19,258 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:05:19,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:05:19,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1990429928, now seen corresponding path program 1 times [2024-11-14 03:05:19,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:05:19,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606764771] [2024-11-14 03:05:19,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:05:19,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:05:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:05:19,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:05:19,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606764771] [2024-11-14 03:05:19,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606764771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:05:19,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583093155] [2024-11-14 03:05:19,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:05:19,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:05:19,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:05:19,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:05:19,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:05:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:19,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:05:19,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:05:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 03:05:20,014 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:05:20,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583093155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:05:20,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:05:20,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-14 03:05:20,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792182497] [2024-11-14 03:05:20,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:05:20,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:05:20,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:05:20,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:05:20,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-14 03:05:20,016 INFO L87 Difference]: Start difference. First operand 324 states and 397 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:05:20,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:05:20,225 INFO L93 Difference]: Finished difference Result 465 states and 581 transitions. [2024-11-14 03:05:20,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:05:20,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2024-11-14 03:05:20,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:05:20,229 INFO L225 Difference]: With dead ends: 465 [2024-11-14 03:05:20,229 INFO L226 Difference]: Without dead ends: 365 [2024-11-14 03:05:20,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-14 03:05:20,231 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 29 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:05:20,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 224 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:05:20,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-11-14 03:05:20,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 354. [2024-11-14 03:05:20,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 254 states have (on average 1.2677165354330708) internal successors, (322), 282 states have internal predecessors, (322), 47 states have call successors, (47), 43 states have call predecessors, (47), 52 states have return successors, (64), 51 states have call predecessors, (64), 47 states have call successors, (64) [2024-11-14 03:05:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 433 transitions. [2024-11-14 03:05:20,295 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 433 transitions. Word has length 46 [2024-11-14 03:05:20,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:05:20,295 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 433 transitions. [2024-11-14 03:05:20,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:05:20,296 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 433 transitions. [2024-11-14 03:05:20,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-14 03:05:20,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:05:20,299 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 03:05:20,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 03:05:20,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:05:20,504 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:05:20,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:05:20,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1273212482, now seen corresponding path program 1 times [2024-11-14 03:05:20,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:05:20,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010165490] [2024-11-14 03:05:20,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:05:20,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:05:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:20,831 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:05:20,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:05:20,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010165490] [2024-11-14 03:05:20,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010165490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:05:20,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975689680] [2024-11-14 03:05:20,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:05:20,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:05:20,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:05:20,837 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:05:20,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:05:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:20,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 03:05:20,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:05:21,333 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:05:21,334 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:05:21,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975689680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:05:21,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:05:21,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-14 03:05:21,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214509559] [2024-11-14 03:05:21,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:05:21,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:05:21,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:05:21,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:05:21,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-14 03:05:21,335 INFO L87 Difference]: Start difference. First operand 354 states and 433 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 03:05:21,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:05:21,916 INFO L93 Difference]: Finished difference Result 683 states and 854 transitions. [2024-11-14 03:05:21,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 03:05:21,917 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 49 [2024-11-14 03:05:21,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:05:21,923 INFO L225 Difference]: With dead ends: 683 [2024-11-14 03:05:21,924 INFO L226 Difference]: Without dead ends: 380 [2024-11-14 03:05:21,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-14 03:05:21,926 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 86 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:05:21,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 207 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:05:21,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-14 03:05:21,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 366. [2024-11-14 03:05:21,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 267 states have (on average 1.2659176029962547) internal successors, (338), 293 states have internal predecessors, (338), 49 states have call successors, (49), 45 states have call predecessors, (49), 49 states have return successors, (64), 49 states have call predecessors, (64), 49 states have call successors, (64) [2024-11-14 03:05:21,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 451 transitions. [2024-11-14 03:05:21,990 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 451 transitions. Word has length 49 [2024-11-14 03:05:21,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:05:21,990 INFO L471 AbstractCegarLoop]: Abstraction has 366 states and 451 transitions. [2024-11-14 03:05:21,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 03:05:21,994 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 451 transitions. [2024-11-14 03:05:21,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 03:05:21,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:05:21,996 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 03:05:22,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 03:05:22,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:05:22,197 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:05:22,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:05:22,197 INFO L85 PathProgramCache]: Analyzing trace with hash -468988093, now seen corresponding path program 1 times [2024-11-14 03:05:22,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:05:22,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089246579] [2024-11-14 03:05:22,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:05:22,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:05:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:05:23,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:05:23,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089246579] [2024-11-14 03:05:23,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089246579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:05:23,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85223873] [2024-11-14 03:05:23,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:05:23,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:05:23,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:05:23,014 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:05:23,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 03:05:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:23,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 03:05:23,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:05:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:05:23,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:05:24,145 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 03:05:24,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85223873] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:05:24,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2056846636] [2024-11-14 03:05:24,174 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2024-11-14 03:05:24,174 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:05:24,179 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:05:24,184 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:05:24,184 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:05:31,461 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 13 for LOIs [2024-11-14 03:05:31,465 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 152 for LOIs [2024-11-14 03:05:33,240 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 13 for LOIs [2024-11-14 03:05:33,272 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 10 for LOIs [2024-11-14 03:05:33,273 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:05:39,766 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9033#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (= 1 ~systemActive~0) (<= 0 (+ ~pumpRunning~0 2147483648)) (= ~waterLevel~0 0))' at error location [2024-11-14 03:05:39,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:05:39,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:05:39,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 10] total 29 [2024-11-14 03:05:39,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899782556] [2024-11-14 03:05:39,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:05:39,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-14 03:05:39,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:05:39,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-14 03:05:39,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=2432, Unknown=0, NotChecked=0, Total=2756 [2024-11-14 03:05:39,770 INFO L87 Difference]: Start difference. First operand 366 states and 451 transitions. Second operand has 29 states, 25 states have (on average 3.68) internal successors, (92), 25 states have internal predecessors, (92), 12 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2024-11-14 03:05:45,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:05:45,650 INFO L93 Difference]: Finished difference Result 2495 states and 3302 transitions. [2024-11-14 03:05:45,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-11-14 03:05:45,651 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 3.68) internal successors, (92), 25 states have internal predecessors, (92), 12 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) Word has length 52 [2024-11-14 03:05:45,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:05:45,672 INFO L225 Difference]: With dead ends: 2495 [2024-11-14 03:05:45,672 INFO L226 Difference]: Without dead ends: 2180 [2024-11-14 03:05:45,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 119 SyntacticMatches, 9 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10191 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=3399, Invalid=22683, Unknown=0, NotChecked=0, Total=26082 [2024-11-14 03:05:45,686 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 1202 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 2510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 03:05:45,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1209 Valid, 1052 Invalid, 2510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 03:05:45,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2024-11-14 03:05:45,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 1193. [2024-11-14 03:05:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 897 states have (on average 1.2798216276477146) internal successors, (1148), 957 states have internal predecessors, (1148), 152 states have call successors, (152), 132 states have call predecessors, (152), 143 states have return successors, (223), 146 states have call predecessors, (223), 152 states have call successors, (223) [2024-11-14 03:05:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1523 transitions. [2024-11-14 03:05:45,900 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1523 transitions. Word has length 52 [2024-11-14 03:05:45,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:05:45,900 INFO L471 AbstractCegarLoop]: Abstraction has 1193 states and 1523 transitions. [2024-11-14 03:05:45,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 3.68) internal successors, (92), 25 states have internal predecessors, (92), 12 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2024-11-14 03:05:45,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1523 transitions. [2024-11-14 03:05:45,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-14 03:05:45,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:05:45,904 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:05:45,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 03:05:46,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:05:46,105 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:05:46,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:05:46,106 INFO L85 PathProgramCache]: Analyzing trace with hash -811858749, now seen corresponding path program 1 times [2024-11-14 03:05:46,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:05:46,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332092472] [2024-11-14 03:05:46,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:05:46,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:05:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:46,468 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 5 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:05:46,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:05:46,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332092472] [2024-11-14 03:05:46,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332092472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:05:46,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3440745] [2024-11-14 03:05:46,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:05:46,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:05:46,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:05:46,471 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:05:46,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 03:05:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:46,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 03:05:46,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:05:46,801 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 29 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 03:05:46,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:05:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 03:05:47,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3440745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:05:47,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1416534643] [2024-11-14 03:05:47,011 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2024-11-14 03:05:47,011 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:05:47,011 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:05:47,011 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:05:47,011 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:05:49,165 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 14 for LOIs [2024-11-14 03:05:49,169 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 12 for LOIs [2024-11-14 03:05:49,231 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 22 for LOIs [2024-11-14 03:05:49,254 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 3 for LOIs [2024-11-14 03:05:49,256 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 13 for LOIs [2024-11-14 03:05:49,257 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:05:50,886 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14975#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (<= 0 ~systemActive~0) (<= 0 (+ ~pumpRunning~0 2147483648)) (= ~waterLevel~0 0) (<= ~systemActive~0 1))' at error location [2024-11-14 03:05:50,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:05:50,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:05:50,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 19 [2024-11-14 03:05:50,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208682470] [2024-11-14 03:05:50,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:05:50,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-14 03:05:50,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:05:50,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-14 03:05:50,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1937, Unknown=0, NotChecked=0, Total=2162 [2024-11-14 03:05:50,888 INFO L87 Difference]: Start difference. First operand 1193 states and 1523 transitions. Second operand has 19 states, 17 states have (on average 6.352941176470588) internal successors, (108), 18 states have internal predecessors, (108), 9 states have call successors, (16), 6 states have call predecessors, (16), 7 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-14 03:05:54,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:05:54,512 INFO L93 Difference]: Finished difference Result 3462 states and 4787 transitions. [2024-11-14 03:05:54,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-11-14 03:05:54,512 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 6.352941176470588) internal successors, (108), 18 states have internal predecessors, (108), 9 states have call successors, (16), 6 states have call predecessors, (16), 7 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) Word has length 72 [2024-11-14 03:05:54,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:05:54,532 INFO L225 Difference]: With dead ends: 3462 [2024-11-14 03:05:54,532 INFO L226 Difference]: Without dead ends: 2380 [2024-11-14 03:05:54,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 217 SyntacticMatches, 5 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6826 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2387, Invalid=14905, Unknown=0, NotChecked=0, Total=17292 [2024-11-14 03:05:54,544 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 1153 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:05:54,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 775 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-14 03:05:54,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2024-11-14 03:05:54,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 1648. [2024-11-14 03:05:54,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1228 states have (on average 1.2793159609120521) internal successors, (1571), 1318 states have internal predecessors, (1571), 219 states have call successors, (219), 197 states have call predecessors, (219), 200 states have return successors, (267), 208 states have call predecessors, (267), 219 states have call successors, (267) [2024-11-14 03:05:54,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2057 transitions. [2024-11-14 03:05:54,792 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2057 transitions. Word has length 72 [2024-11-14 03:05:54,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:05:54,792 INFO L471 AbstractCegarLoop]: Abstraction has 1648 states and 2057 transitions. [2024-11-14 03:05:54,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 6.352941176470588) internal successors, (108), 18 states have internal predecessors, (108), 9 states have call successors, (16), 6 states have call predecessors, (16), 7 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-14 03:05:54,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2057 transitions. [2024-11-14 03:05:54,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-14 03:05:54,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:05:54,801 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 03:05:54,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 03:05:55,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-14 03:05:55,001 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:05:55,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:05:55,002 INFO L85 PathProgramCache]: Analyzing trace with hash 858171749, now seen corresponding path program 2 times [2024-11-14 03:05:55,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:05:55,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095872650] [2024-11-14 03:05:55,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:05:55,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:05:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:56,088 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 42 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 03:05:56,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:05:56,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095872650] [2024-11-14 03:05:56,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095872650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:05:56,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013849704] [2024-11-14 03:05:56,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:05:56,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:05:56,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:05:56,092 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:05:56,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 03:05:56,184 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 03:05:56,184 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:05:56,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 03:05:56,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:05:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-14 03:05:56,284 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:05:56,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013849704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:05:56,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:05:56,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22] total 25 [2024-11-14 03:05:56,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141084242] [2024-11-14 03:05:56,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:05:56,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:05:56,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:05:56,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:05:56,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2024-11-14 03:05:56,289 INFO L87 Difference]: Start difference. First operand 1648 states and 2057 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-14 03:05:56,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:05:56,520 INFO L93 Difference]: Finished difference Result 2058 states and 2575 transitions. [2024-11-14 03:05:56,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:05:56,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 100 [2024-11-14 03:05:56,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:05:56,522 INFO L225 Difference]: With dead ends: 2058 [2024-11-14 03:05:56,522 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 03:05:56,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2024-11-14 03:05:56,527 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 3 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:05:56,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 159 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:05:56,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 03:05:56,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 03:05:56,528 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 03:05:56,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 03:05:56,529 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 100 [2024-11-14 03:05:56,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:05:56,529 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 03:05:56,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-14 03:05:56,530 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 03:05:56,530 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 03:05:56,533 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 03:05:56,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 03:05:56,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-14 03:05:56,738 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:05:56,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-14 03:06:14,229 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 03:06:14,246 WARN L162 FloydHoareUtils]: Requires clause for deactivatePump contained old-variable. Original clause: (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or (and (<= 2 ~waterLevel~0) (not (= 0 ~systemActive~0))) (and (not (= |old(~pumpRunning~0)| 0)) (= 1 ~systemActive~0) (= ~waterLevel~0 1)))) Eliminated clause: (or (and (<= 2 ~waterLevel~0) (not (= 0 ~systemActive~0))) (and (not (= ~pumpRunning~0 0)) (= 1 ~systemActive~0) (= ~waterLevel~0 1))) [2024-11-14 03:06:14,257 WARN L162 FloydHoareUtils]: Requires clause for changeMethaneLevel contained old-variable. Original clause: (and (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (or (< 1 ~waterLevel~0) (= ~waterLevel~0 1))) (.cse2 (= 1 ~systemActive~0))) (or (and .cse0 .cse1 (= 0 ~systemActive~0)) (and (<= 2 ~waterLevel~0) .cse2) (and .cse0 .cse1 .cse2))) (= |old(~methaneLevelCritical~0)| ~methaneLevelCritical~0)) Eliminated clause: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (or (< 1 ~waterLevel~0) (= ~waterLevel~0 1))) (.cse2 (= 1 ~systemActive~0))) (or (and .cse0 .cse1 (= 0 ~systemActive~0)) (and (<= 2 ~waterLevel~0) .cse2) (and .cse0 .cse1 .cse2))) [2024-11-14 03:06:14,264 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| ~waterLevel~0) (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |old(~pumpRunning~0)| 0)) (.cse2 (or (< 1 |old(~waterLevel~0)|) (= |old(~waterLevel~0)| 1)))) (or (and .cse0 (<= 2 |old(~waterLevel~0)|)) (and .cse0 .cse1 .cse2) (and .cse1 (= 0 ~systemActive~0) .cse2)))) Eliminated clause: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (or (< 1 ~waterLevel~0) (= ~waterLevel~0 1))) (.cse2 (= 1 ~systemActive~0))) (or (and .cse0 .cse1 (= 0 ~systemActive~0)) (and (<= 2 ~waterLevel~0) .cse2) (and .cse0 .cse1 .cse2))) [2024-11-14 03:06:14,277 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__highWaterSensor contained old-variable. Original clause: (and (= ~pumpRunning~0 0) (or (< 1 ~waterLevel~0) (= ~waterLevel~0 1)) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0)) Eliminated clause: (and (= ~pumpRunning~0 0) (or (< 1 ~waterLevel~0) (= ~waterLevel~0 1)) (= 1 ~systemActive~0)) [2024-11-14 03:06:14,284 WARN L162 FloydHoareUtils]: Requires clause for waterRise contained old-variable. Original clause: (and (= |old(~waterLevel~0)| ~waterLevel~0) (let ((.cse1 (= 1 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse2 (or (< 1 |old(~waterLevel~0)|) (= |old(~waterLevel~0)| 1)))) (or (and .cse0 .cse1 .cse2) (and (or (not (= ~methaneLevelCritical~0 0)) (= ~pumpRunning~0 1)) .cse1 .cse2) (and .cse0 (= 0 ~systemActive~0) .cse2)))) Eliminated clause: (let ((.cse2 (= ~pumpRunning~0 0)) (.cse0 (or (< 1 ~waterLevel~0) (= ~waterLevel~0 1))) (.cse1 (= 1 ~systemActive~0))) (or (and .cse0 (or (not (= ~methaneLevelCritical~0 0)) (= ~pumpRunning~0 1)) .cse1) (and .cse2 .cse0 (= 0 ~systemActive~0)) (and .cse2 .cse0 .cse1))) [2024-11-14 03:06:14,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 03:06:14 BoogieIcfgContainer [2024-11-14 03:06:14,291 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 03:06:14,292 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 03:06:14,292 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 03:06:14,292 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 03:06:14,293 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:05:15" (3/4) ... [2024-11-14 03:06:14,295 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 03:06:14,298 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2024-11-14 03:06:14,299 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-14 03:06:14,299 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-14 03:06:14,299 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-14 03:06:14,299 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-14 03:06:14,299 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2024-11-14 03:06:14,300 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-14 03:06:14,306 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 45 nodes and edges [2024-11-14 03:06:14,306 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-14 03:06:14,307 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-14 03:06:14,307 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 03:06:14,307 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 03:06:14,333 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((pumpRunning == \old(pumpRunning)) && (\old(waterLevel) == waterLevel)) && ((((1 == systemActive) && (2 <= \old(waterLevel))) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && ((1 < \old(waterLevel)) || (\old(waterLevel) == 1)))) || (((\old(pumpRunning) == 0) && (0 == systemActive)) && ((1 < \old(waterLevel)) || (\old(waterLevel) == 1))))) [2024-11-14 03:06:14,360 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((pumpRunning == \old(pumpRunning)) && (\old(waterLevel) == waterLevel)) && ((((1 == systemActive) && (2 <= \old(waterLevel))) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && ((1 < \old(waterLevel)) || (\old(waterLevel) == 1)))) || (((\old(pumpRunning) == 0) && (0 == systemActive)) && ((1 < \old(waterLevel)) || (\old(waterLevel) == 1))))) [2024-11-14 03:06:14,409 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 03:06:14,409 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-14 03:06:14,409 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 03:06:14,410 INFO L158 Benchmark]: Toolchain (without parser) took 60149.88ms. Allocated memory was 117.4MB in the beginning and 1.1GB in the end (delta: 989.9MB). Free memory was 91.9MB in the beginning and 939.6MB in the end (delta: -847.7MB). Peak memory consumption was 142.5MB. Max. memory is 16.1GB. [2024-11-14 03:06:14,410 INFO L158 Benchmark]: CDTParser took 0.94ms. Allocated memory is still 117.4MB. Free memory is still 75.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:06:14,411 INFO L158 Benchmark]: CACSL2BoogieTranslator took 615.67ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 73.0MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 03:06:14,411 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.02ms. Allocated memory is still 117.4MB. Free memory was 73.0MB in the beginning and 71.0MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:06:14,411 INFO L158 Benchmark]: Boogie Preprocessor took 48.07ms. Allocated memory is still 117.4MB. Free memory was 71.0MB in the beginning and 69.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:06:14,412 INFO L158 Benchmark]: RCFGBuilder took 767.99ms. Allocated memory is still 117.4MB. Free memory was 69.7MB in the beginning and 42.0MB in the end (delta: 27.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 03:06:14,412 INFO L158 Benchmark]: TraceAbstraction took 58536.36ms. Allocated memory was 117.4MB in the beginning and 1.1GB in the end (delta: 989.9MB). Free memory was 41.5MB in the beginning and 948.0MB in the end (delta: -906.5MB). Peak memory consumption was 630.9MB. Max. memory is 16.1GB. [2024-11-14 03:06:14,412 INFO L158 Benchmark]: Witness Printer took 117.35ms. Allocated memory is still 1.1GB. Free memory was 948.0MB in the beginning and 939.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:06:14,414 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.94ms. Allocated memory is still 117.4MB. Free memory is still 75.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 615.67ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 73.0MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.02ms. Allocated memory is still 117.4MB. Free memory was 73.0MB in the beginning and 71.0MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.07ms. Allocated memory is still 117.4MB. Free memory was 71.0MB in the beginning and 69.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 767.99ms. Allocated memory is still 117.4MB. Free memory was 69.7MB in the beginning and 42.0MB in the end (delta: 27.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 58536.36ms. Allocated memory was 117.4MB in the beginning and 1.1GB in the end (delta: 989.9MB). Free memory was 41.5MB in the beginning and 948.0MB in the end (delta: -906.5MB). Peak memory consumption was 630.9MB. Max. memory is 16.1GB. * Witness Printer took 117.35ms. Allocated memory is still 1.1GB. Free memory was 948.0MB in the beginning and 939.6MB 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,"featureselect.i","") [49] - GenericResultAtLocation [Line: 87]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [87] - GenericResultAtLocation [Line: 188]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [188] - GenericResultAtLocation [Line: 554]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [554] - GenericResultAtLocation [Line: 583]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [583] - GenericResultAtLocation [Line: 592]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [592] - GenericResultAtLocation [Line: 839]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [839] - GenericResultAtLocation [Line: 908]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [908] * 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: 588]: 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 8 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40.9s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 12.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2944 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2913 mSDsluCounter, 3286 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2555 mSDsCounter, 1559 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4375 IncrementalHoareTripleChecker+Invalid, 5934 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1559 mSolverCounterUnsat, 731 mSDtfsCounter, 4375 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 925 GetRequests, 546 SyntacticMatches, 16 SemanticMatches, 363 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17259 ImplicationChecksByTransitivity, 15.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1648occurred in iteration=11, InterpolantAutomatonStates: 268, 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, 12 MinimizatonAttempts, 1830 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 791 NumberOfCodeBlocks, 743 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 896 ConstructedInterpolants, 0 QuantifiedInterpolants, 3287 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1093 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 19 InterpolantComputations, 10 PerfectInterpolantSequences, 354/483 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: 849]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 850]: Loop Invariant Derived loop invariant: (((((((methaneLevelCritical != 0) || (pumpRunning == 1)) && (2 <= waterLevel)) && (1 == systemActive)) && (splverifierCounter == 0)) || ((((pumpRunning == 0) && ((1 < waterLevel) || (waterLevel == 1))) && (splverifierCounter == 0)) && (0 == systemActive))) || ((((pumpRunning == 0) && ((1 < waterLevel) || (waterLevel == 1))) && (1 == systemActive)) && (splverifierCounter == 0))) - InvariantResult [Line: 605]: Location Invariant Derived location invariant: (((pumpRunning == \old(pumpRunning)) && (\old(waterLevel) == waterLevel)) && ((((1 == systemActive) && (2 <= \old(waterLevel))) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && ((1 < \old(waterLevel)) || (\old(waterLevel) == 1)))) || (((\old(pumpRunning) == 0) && (0 == systemActive)) && ((1 < \old(waterLevel)) || (\old(waterLevel) == 1))))) - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 714]: Procedure Contract for deactivatePump Derived contract for procedure deactivatePump. Requires: (((2 <= waterLevel) && (0 != systemActive)) || (((pumpRunning != 0) && (1 == systemActive)) && (waterLevel == 1))) Ensures: (((pumpRunning == 0) && (((2 <= waterLevel) && (0 != systemActive)) || (((\old(pumpRunning) != 0) && (1 == systemActive)) && (waterLevel == 1)))) && (((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (head == \old(head))) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 629]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: (((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) Ensures: ((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) && ((((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (head == \old(head))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 935]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Requires: (((((pumpRunning == 0) && ((1 < waterLevel) || (waterLevel == 1))) && (0 == systemActive)) || ((2 <= waterLevel) && (1 == systemActive))) || (((pumpRunning == 0) && ((1 < waterLevel) || (waterLevel == 1))) && (1 == systemActive))) Ensures: (((((\old(methaneLevelCritical) != 0) || (methaneLevelCritical == 1)) && (((((pumpRunning == 0) && ((1 < waterLevel) || (waterLevel == 1))) && (0 == systemActive)) || ((2 <= waterLevel) && (1 == systemActive))) || (((pumpRunning == 0) && ((1 < waterLevel) || (waterLevel == 1))) && (1 == systemActive)))) && (((pumpRunning != 0) || (methaneLevelCritical == 0)) || (\old(methaneLevelCritical) != 1))) && (((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (head == \old(head))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel)))) - ProcedureContractResult [Line: 605]: Procedure Contract for timeShift Derived contract for procedure timeShift. Requires: (((((pumpRunning == 0) && ((1 < waterLevel) || (waterLevel == 1))) && (0 == systemActive)) || ((2 <= waterLevel) && (1 == systemActive))) || (((pumpRunning == 0) && ((1 < waterLevel) || (waterLevel == 1))) && (1 == systemActive))) Ensures: (((((((((((((methaneLevelCritical != 0) || (pumpRunning == 1)) && (2 <= waterLevel)) && (1 == systemActive)) && (\old(waterLevel) == waterLevel)) && ((pumpRunning == \old(pumpRunning)) || (methaneLevelCritical == 0))) || (((pumpRunning == 0) && ((1 < waterLevel) || (waterLevel == 1))) && ((waterLevel < \old(waterLevel)) || (\old(waterLevel) == waterLevel)))) && ((1 == systemActive) || ((\old(pumpRunning) == 0) && (0 == systemActive)))) && (((\old(pumpRunning) == 0) || (\old(waterLevel) != 2)) || (waterLevel == 1))) && ((((\old(pumpRunning) != 0) || (1 != systemActive)) || (\old(waterLevel) < 2)) || (((((methaneLevelCritical != 0) || (pumpRunning == 1)) && (2 <= waterLevel)) && (\old(waterLevel) == waterLevel)) && ((pumpRunning == 0) || (methaneLevelCritical == 0))))) && ((\old(waterLevel) == waterLevel) || (0 != systemActive))) && ((1 < \old(waterLevel)) || (\old(pumpRunning) == 0))) && ((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (head == \old(head))) && (systemActive == \old(systemActive))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 90]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (head == \old(head))) && (systemActive == \old(systemActive))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 637]: Procedure Contract for processEnvironment__wrappee__highWaterSensor Derived contract for procedure processEnvironment__wrappee__highWaterSensor. Requires: (((pumpRunning == 0) && ((1 < waterLevel) || (waterLevel == 1))) && (1 == systemActive)) Ensures: (((((1 == systemActive) && (\old(pumpRunning) == 0)) && ((1 < waterLevel) || ((pumpRunning == 0) && (waterLevel == 1)))) && ((waterLevel < 2) || (((methaneLevelCritical != 0) || (pumpRunning == 1)) && ((pumpRunning == 0) || (methaneLevelCritical == 0))))) && (((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (head == \old(head))) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 923]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: ((((((1 < waterLevel) || (waterLevel == 1)) && ((methaneLevelCritical != 0) || (pumpRunning == 1))) && (1 == systemActive)) || (((pumpRunning == 0) && ((1 < waterLevel) || (waterLevel == 1))) && (0 == systemActive))) || (((pumpRunning == 0) && ((1 < waterLevel) || (waterLevel == 1))) && (1 == systemActive))) Ensures: (((((((long long) \old(waterLevel) + 1) == waterLevel) && (\old(waterLevel) <= 1)) || ((2 <= \old(waterLevel)) && (\old(waterLevel) == waterLevel))) && (((((pumpRunning == 0) && (1 == systemActive)) && ((1 < \old(waterLevel)) || (\old(waterLevel) == 1))) || ((((methaneLevelCritical != 0) || (pumpRunning == 1)) && (1 == systemActive)) && ((1 < \old(waterLevel)) || (\old(waterLevel) == 1)))) || (((pumpRunning == 0) && (0 == systemActive)) && ((1 < \old(waterLevel)) || (\old(waterLevel) == 1))))) && (((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (head == \old(head))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (methaneLevelCritical == \old(methaneLevelCritical)))) RESULT: Ultimate proved your program to be correct! [2024-11-14 03:06:14,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69f93ef9-a51d-46c9-b46e-174ea3b18a4e/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