./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product50.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_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/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_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product50.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/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_cabf220b-a572-456c-b082-e2e3eaf82450/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 9cfe95aaca007f6467395901a9efc89e5ad27f0fc32ae7ae8a1fe4e27a1f35c1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:19:59,064 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:19:59,139 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:19:59,145 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:19:59,145 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:19:59,169 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:19:59,170 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:19:59,170 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:19:59,171 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:19:59,171 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:19:59,171 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:19:59,171 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:19:59,171 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:19:59,171 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:19:59,172 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:19:59,172 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:19:59,172 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:19:59,172 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:19:59,172 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:19:59,173 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:19:59,173 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:19:59,173 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:19:59,173 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:19:59,174 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:19:59,174 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:19:59,174 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:19:59,174 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:19:59,174 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:19:59,174 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:19:59,175 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:19:59,175 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:19:59,175 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:19:59,175 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:19:59,175 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:19:59,175 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:19:59,175 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:19:59,175 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:19:59,175 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:19:59,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:19:59,176 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:19:59,176 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:19:59,176 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:19:59,176 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:19:59,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:19:59,176 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:19:59,176 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:19:59,176 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:19:59,176 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_cabf220b-a572-456c-b082-e2e3eaf82450/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 -> 9cfe95aaca007f6467395901a9efc89e5ad27f0fc32ae7ae8a1fe4e27a1f35c1 [2024-11-14 04:19:59,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:19:59,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:19:59,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:19:59,544 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:19:59,545 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:19:59,548 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/product-lines/minepump_spec5_product50.cil.c Unable to find full path for "g++" [2024-11-14 04:20:01,530 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:20:01,946 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:20:01,946 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/sv-benchmarks/c/product-lines/minepump_spec5_product50.cil.c [2024-11-14 04:20:01,961 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/data/39c6b3d02/8e4a3139510f4dcb9f0dd3d7f025971b/FLAGc39e972ce [2024-11-14 04:20:02,121 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/data/39c6b3d02/8e4a3139510f4dcb9f0dd3d7f025971b [2024-11-14 04:20:02,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:20:02,125 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:20:02,126 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:20:02,127 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:20:02,130 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:20:02,131 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:20:02" (1/1) ... [2024-11-14 04:20:02,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2161f81f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:02, skipping insertion in model container [2024-11-14 04:20:02,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:20:02" (1/1) ... [2024-11-14 04:20:02,168 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:20:02,328 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_cabf220b-a572-456c-b082-e2e3eaf82450/sv-benchmarks/c/product-lines/minepump_spec5_product50.cil.c[1605,1618] [2024-11-14 04:20:02,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:20:02,499 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:20:02,508 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] [2024-11-14 04:20:02,510 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [58] [2024-11-14 04:20:02,510 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [279] [2024-11-14 04:20:02,510 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [349] [2024-11-14 04:20:02,510 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [453] [2024-11-14 04:20:02,511 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [819] [2024-11-14 04:20:02,511 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [868] [2024-11-14 04:20:02,511 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [906] [2024-11-14 04:20:02,515 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_cabf220b-a572-456c-b082-e2e3eaf82450/sv-benchmarks/c/product-lines/minepump_spec5_product50.cil.c[1605,1618] [2024-11-14 04:20:02,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:20:02,628 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:20:02,628 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:02 WrapperNode [2024-11-14 04:20:02,629 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:20:02,630 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:20:02,630 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:20:02,630 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:20:02,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:02" (1/1) ... [2024-11-14 04:20:02,659 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:02" (1/1) ... [2024-11-14 04:20:02,694 INFO L138 Inliner]: procedures = 58, calls = 102, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 211 [2024-11-14 04:20:02,694 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:20:02,695 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:20:02,695 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:20:02,695 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:20:02,703 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:02" (1/1) ... [2024-11-14 04:20:02,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:02" (1/1) ... [2024-11-14 04:20:02,706 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:02" (1/1) ... [2024-11-14 04:20:02,706 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:02" (1/1) ... [2024-11-14 04:20:02,711 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:02" (1/1) ... [2024-11-14 04:20:02,715 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:02" (1/1) ... [2024-11-14 04:20:02,717 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:02" (1/1) ... [2024-11-14 04:20:02,718 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:02" (1/1) ... [2024-11-14 04:20:02,720 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:20:02,721 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:20:02,722 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:20:02,722 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:20:02,727 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:02" (1/1) ... [2024-11-14 04:20:02,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:20:02,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:20:02,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:20:02,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:20:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:20:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-14 04:20:02,808 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-14 04:20:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-14 04:20:02,808 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-14 04:20:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-14 04:20:02,808 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-14 04:20:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2024-11-14 04:20:02,808 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2024-11-14 04:20:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-14 04:20:02,809 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-14 04:20:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2024-11-14 04:20:02,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2024-11-14 04:20:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:20:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-14 04:20:02,809 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-14 04:20:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:20:02,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:20:02,925 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:20:02,929 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:20:03,275 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-11-14 04:20:03,275 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:20:03,443 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:20:03,444 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 04:20:03,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:20:03 BoogieIcfgContainer [2024-11-14 04:20:03,445 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:20:03,449 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:20:03,449 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:20:03,455 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:20:03,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:20:02" (1/3) ... [2024-11-14 04:20:03,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31bb7dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:20:03, skipping insertion in model container [2024-11-14 04:20:03,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:20:02" (2/3) ... [2024-11-14 04:20:03,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31bb7dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:20:03, skipping insertion in model container [2024-11-14 04:20:03,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:20:03" (3/3) ... [2024-11-14 04:20:03,459 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product50.cil.c [2024-11-14 04:20:03,477 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:20:03,479 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG minepump_spec5_product50.cil.c that has 8 procedures, 58 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-14 04:20:03,580 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:20:03,598 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;@55cfa3f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:20:03,598 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:20:03,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-14 04:20:03,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 04:20:03,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:20:03,614 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:20:03,614 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:20:03,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:20:03,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1725741479, now seen corresponding path program 1 times [2024-11-14 04:20:03,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:20:03,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262277219] [2024-11-14 04:20:03,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:20:03,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:20:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:20:03,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:20:03,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:20:03,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262277219] [2024-11-14 04:20:03,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262277219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:20:03,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:20:03,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:20:03,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522277307] [2024-11-14 04:20:03,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:20:03,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 04:20:03,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:20:03,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 04:20:03,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:20:03,892 INFO L87 Difference]: Start difference. First operand has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:20:03,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:20:03,993 INFO L93 Difference]: Finished difference Result 114 states and 155 transitions. [2024-11-14 04:20:03,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 04:20:03,996 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-11-14 04:20:03,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:20:04,007 INFO L225 Difference]: With dead ends: 114 [2024-11-14 04:20:04,007 INFO L226 Difference]: Without dead ends: 53 [2024-11-14 04:20:04,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:20:04,019 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:20:04,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:20:04,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-14 04:20:04,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-14 04:20:04,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 41 states have internal predecessors, (45), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-14 04:20:04,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2024-11-14 04:20:04,077 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 21 [2024-11-14 04:20:04,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:20:04,078 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2024-11-14 04:20:04,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:20:04,079 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2024-11-14 04:20:04,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 04:20:04,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:20:04,083 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:20:04,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:20:04,083 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:20:04,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:20:04,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1126202948, now seen corresponding path program 1 times [2024-11-14 04:20:04,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:20:04,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236772188] [2024-11-14 04:20:04,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:20:04,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:20:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:20:04,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:20:04,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:20:04,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236772188] [2024-11-14 04:20:04,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236772188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:20:04,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:20:04,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:20:04,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457263511] [2024-11-14 04:20:04,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:20:04,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:20:04,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:20:04,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:20:04,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:20:04,288 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:20:04,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:20:04,359 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2024-11-14 04:20:04,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:20:04,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-11-14 04:20:04,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:20:04,362 INFO L225 Difference]: With dead ends: 83 [2024-11-14 04:20:04,363 INFO L226 Difference]: Without dead ends: 45 [2024-11-14 04:20:04,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:20:04,365 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:20:04,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 77 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:20:04,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-14 04:20:04,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-14 04:20:04,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 36 states have internal predecessors, (39), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 04:20:04,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-11-14 04:20:04,383 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 22 [2024-11-14 04:20:04,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:20:04,383 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-11-14 04:20:04,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:20:04,384 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-11-14 04:20:04,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 04:20:04,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:20:04,385 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:20:04,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:20:04,385 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:20:04,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:20:04,386 INFO L85 PathProgramCache]: Analyzing trace with hash -111941839, now seen corresponding path program 1 times [2024-11-14 04:20:04,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:20:04,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092309692] [2024-11-14 04:20:04,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:20:04,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:20:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:20:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:20:04,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:20:04,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092309692] [2024-11-14 04:20:04,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092309692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:20:04,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:20:04,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 04:20:04,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928282553] [2024-11-14 04:20:04,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:20:04,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:20:04,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:20:04,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:20:04,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:20:04,616 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:20:04,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:20:04,951 INFO L93 Difference]: Finished difference Result 122 states and 159 transitions. [2024-11-14 04:20:04,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:20:04,952 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-11-14 04:20:04,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:20:04,955 INFO L225 Difference]: With dead ends: 122 [2024-11-14 04:20:04,956 INFO L226 Difference]: Without dead ends: 79 [2024-11-14 04:20:04,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:20:04,958 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 30 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:20:04,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 200 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:20:04,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-14 04:20:04,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-14 04:20:04,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 59 states have internal predecessors, (66), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (18), 14 states have call predecessors, (18), 14 states have call successors, (18) [2024-11-14 04:20:04,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2024-11-14 04:20:04,988 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 24 [2024-11-14 04:20:04,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:20:04,988 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2024-11-14 04:20:04,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:20:04,989 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2024-11-14 04:20:04,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 04:20:04,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:20:04,990 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:20:04,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 04:20:04,990 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:20:04,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:20:04,990 INFO L85 PathProgramCache]: Analyzing trace with hash 621460030, now seen corresponding path program 1 times [2024-11-14 04:20:04,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:20:04,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791345456] [2024-11-14 04:20:04,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:20:04,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:20:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:20:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:20:05,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:20:05,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791345456] [2024-11-14 04:20:05,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791345456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:20:05,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:20:05,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 04:20:05,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605367336] [2024-11-14 04:20:05,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:20:05,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:20:05,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:20:05,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:20:05,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:20:05,513 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:20:05,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:20:05,769 INFO L93 Difference]: Finished difference Result 235 states and 293 transitions. [2024-11-14 04:20:05,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:20:05,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2024-11-14 04:20:05,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:20:05,775 INFO L225 Difference]: With dead ends: 235 [2024-11-14 04:20:05,776 INFO L226 Difference]: Without dead ends: 158 [2024-11-14 04:20:05,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:20:05,777 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 82 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:20:05,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 178 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:20:05,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-14 04:20:05,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 152. [2024-11-14 04:20:05,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 99 states have (on average 1.2424242424242424) internal successors, (123), 110 states have internal predecessors, (123), 28 states have call successors, (28), 24 states have call predecessors, (28), 24 states have return successors, (37), 26 states have call predecessors, (37), 28 states have call successors, (37) [2024-11-14 04:20:05,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 188 transitions. [2024-11-14 04:20:05,830 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 188 transitions. Word has length 32 [2024-11-14 04:20:05,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:20:05,831 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 188 transitions. [2024-11-14 04:20:05,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:20:05,831 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 188 transitions. [2024-11-14 04:20:05,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-14 04:20:05,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:20:05,832 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:20:05,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 04:20:05,833 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:20:05,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:20:05,833 INFO L85 PathProgramCache]: Analyzing trace with hash -913761132, now seen corresponding path program 1 times [2024-11-14 04:20:05,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:20:05,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618649409] [2024-11-14 04:20:05,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:20:05,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:20:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:20:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:20:06,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:20:06,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618649409] [2024-11-14 04:20:06,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618649409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:20:06,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:20:06,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 04:20:06,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113412178] [2024-11-14 04:20:06,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:20:06,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 04:20:06,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:20:06,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 04:20:06,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:20:06,192 INFO L87 Difference]: Start difference. First operand 152 states and 188 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:20:06,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:20:06,756 INFO L93 Difference]: Finished difference Result 357 states and 454 transitions. [2024-11-14 04:20:06,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 04:20:06,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35 [2024-11-14 04:20:06,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:20:06,760 INFO L225 Difference]: With dead ends: 357 [2024-11-14 04:20:06,760 INFO L226 Difference]: Without dead ends: 255 [2024-11-14 04:20:06,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-14 04:20:06,762 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 167 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:20:06,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 229 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:20:06,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-14 04:20:06,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 228. [2024-11-14 04:20:06,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 153 states have (on average 1.2549019607843137) internal successors, (192), 169 states have internal predecessors, (192), 39 states have call successors, (39), 30 states have call predecessors, (39), 35 states have return successors, (54), 41 states have call predecessors, (54), 39 states have call successors, (54) [2024-11-14 04:20:06,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 285 transitions. [2024-11-14 04:20:06,825 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 285 transitions. Word has length 35 [2024-11-14 04:20:06,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:20:06,825 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 285 transitions. [2024-11-14 04:20:06,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:20:06,825 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 285 transitions. [2024-11-14 04:20:06,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 04:20:06,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:20:06,827 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:20:06,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 04:20:06,827 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:20:06,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:20:06,828 INFO L85 PathProgramCache]: Analyzing trace with hash 265584613, now seen corresponding path program 1 times [2024-11-14 04:20:06,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:20:06,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708145772] [2024-11-14 04:20:06,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:20:06,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:20:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:20:06,987 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:20:06,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:20:06,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708145772] [2024-11-14 04:20:06,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708145772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:20:06,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:20:06,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:20:06,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763456833] [2024-11-14 04:20:06,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:20:06,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:20:06,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:20:06,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:20:06,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:20:06,992 INFO L87 Difference]: Start difference. First operand 228 states and 285 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-14 04:20:07,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:20:07,087 INFO L93 Difference]: Finished difference Result 454 states and 574 transitions. [2024-11-14 04:20:07,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:20:07,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 52 [2024-11-14 04:20:07,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:20:07,091 INFO L225 Difference]: With dead ends: 454 [2024-11-14 04:20:07,091 INFO L226 Difference]: Without dead ends: 228 [2024-11-14 04:20:07,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:20:07,093 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:20:07,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 41 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:20:07,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-14 04:20:07,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2024-11-14 04:20:07,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 153 states have (on average 1.2222222222222223) internal successors, (187), 169 states have internal predecessors, (187), 39 states have call successors, (39), 30 states have call predecessors, (39), 35 states have return successors, (54), 41 states have call predecessors, (54), 39 states have call successors, (54) [2024-11-14 04:20:07,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 280 transitions. [2024-11-14 04:20:07,164 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 280 transitions. Word has length 52 [2024-11-14 04:20:07,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:20:07,165 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 280 transitions. [2024-11-14 04:20:07,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-14 04:20:07,169 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 280 transitions. [2024-11-14 04:20:07,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-14 04:20:07,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:20:07,171 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:20:07,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 04:20:07,171 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:20:07,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:20:07,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1651417358, now seen corresponding path program 1 times [2024-11-14 04:20:07,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:20:07,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550698003] [2024-11-14 04:20:07,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:20:07,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:20:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:20:07,311 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 04:20:07,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:20:07,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550698003] [2024-11-14 04:20:07,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550698003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:20:07,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500906396] [2024-11-14 04:20:07,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:20:07,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:20:07,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:20:07,317 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:20:07,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:20:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:20:07,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:20:07,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:20:07,555 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:20:07,556 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:20:07,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500906396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:20:07,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:20:07,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-14 04:20:07,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213262757] [2024-11-14 04:20:07,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:20:07,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:20:07,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:20:07,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:20:07,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:20:07,558 INFO L87 Difference]: Start difference. First operand 228 states and 280 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-14 04:20:07,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:20:07,677 INFO L93 Difference]: Finished difference Result 338 states and 420 transitions. [2024-11-14 04:20:07,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:20:07,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 60 [2024-11-14 04:20:07,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:20:07,680 INFO L225 Difference]: With dead ends: 338 [2024-11-14 04:20:07,683 INFO L226 Difference]: Without dead ends: 218 [2024-11-14 04:20:07,684 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:20:07,685 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 26 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:20:07,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 97 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:20:07,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-14 04:20:07,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2024-11-14 04:20:07,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 146 states have (on average 1.1917808219178083) internal successors, (174), 161 states have internal predecessors, (174), 37 states have call successors, (37), 30 states have call predecessors, (37), 34 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2024-11-14 04:20:07,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 255 transitions. [2024-11-14 04:20:07,739 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 255 transitions. Word has length 60 [2024-11-14 04:20:07,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:20:07,740 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 255 transitions. [2024-11-14 04:20:07,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-14 04:20:07,740 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 255 transitions. [2024-11-14 04:20:07,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-14 04:20:07,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:20:07,742 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:20:07,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 04:20:07,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:20:07,943 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:20:07,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:20:07,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1861060082, now seen corresponding path program 1 times [2024-11-14 04:20:07,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:20:07,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521210909] [2024-11-14 04:20:07,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:20:07,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:20:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:20:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 04:20:08,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:20:08,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521210909] [2024-11-14 04:20:08,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521210909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:20:08,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095425949] [2024-11-14 04:20:08,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:20:08,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:20:08,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:20:08,110 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:20:08,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:20:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:20:08,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 04:20:08,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:20:08,396 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:20:08,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:20:08,632 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:20:08,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095425949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:20:08,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1757607354] [2024-11-14 04:20:08,670 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2024-11-14 04:20:08,671 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:20:08,679 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:20:08,684 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:20:08,685 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:20:15,530 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 168 for LOIs [2024-11-14 04:20:15,647 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 39 for LOIs [2024-11-14 04:20:15,856 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 42 for LOIs [2024-11-14 04:20:15,865 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 58 for LOIs [2024-11-14 04:20:16,004 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 45 for LOIs [2024-11-14 04:20:16,014 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:20:22,901 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4724#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (not (= 2 ~waterLevel~0)) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (<= |old(~pumpRunning~0)| 2147483647) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (<= 0 (+ ~pumpRunning~0 2147483648)) (= ~switchedOnBeforeTS~0 0))' at error location [2024-11-14 04:20:22,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:20:22,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:20:22,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-14 04:20:22,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898883124] [2024-11-14 04:20:22,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:20:22,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 04:20:22,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:20:22,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 04:20:22,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2024-11-14 04:20:22,904 INFO L87 Difference]: Start difference. First operand 218 states and 255 transitions. Second operand has 11 states, 8 states have (on average 8.375) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-14 04:20:23,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:20:23,638 INFO L93 Difference]: Finished difference Result 322 states and 380 transitions. [2024-11-14 04:20:23,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-14 04:20:23,639 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 8.375) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) Word has length 63 [2024-11-14 04:20:23,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:20:23,642 INFO L225 Difference]: With dead ends: 322 [2024-11-14 04:20:23,642 INFO L226 Difference]: Without dead ends: 320 [2024-11-14 04:20:23,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 148 SyntacticMatches, 12 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=255, Invalid=2501, Unknown=0, NotChecked=0, Total=2756 [2024-11-14 04:20:23,645 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 155 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:20:23,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 589 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 04:20:23,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-14 04:20:23,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 276. [2024-11-14 04:20:23,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 182 states have (on average 1.1813186813186813) internal successors, (215), 203 states have internal predecessors, (215), 49 states have call successors, (49), 41 states have call predecessors, (49), 44 states have return successors, (60), 46 states have call predecessors, (60), 49 states have call successors, (60) [2024-11-14 04:20:23,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 324 transitions. [2024-11-14 04:20:23,680 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 324 transitions. Word has length 63 [2024-11-14 04:20:23,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:20:23,680 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 324 transitions. [2024-11-14 04:20:23,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 8.375) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-14 04:20:23,681 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 324 transitions. [2024-11-14 04:20:23,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-14 04:20:23,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:20:23,683 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:20:23,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 04:20:23,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:20:23,887 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:20:23,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:20:23,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1950461984, now seen corresponding path program 1 times [2024-11-14 04:20:23,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:20:23,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691160343] [2024-11-14 04:20:23,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:20:23,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:20:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:20:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-14 04:20:24,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:20:24,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691160343] [2024-11-14 04:20:24,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691160343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:20:24,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479940138] [2024-11-14 04:20:24,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:20:24,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:20:24,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:20:24,217 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:20:24,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:20:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:20:24,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 04:20:24,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:20:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 58 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 04:20:24,565 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:20:24,883 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 04:20:24,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479940138] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:20:24,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1245542658] [2024-11-14 04:20:24,887 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2024-11-14 04:20:24,887 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:20:24,887 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:20:24,887 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:20:24,887 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:20:27,020 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 146 for LOIs [2024-11-14 04:20:27,124 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 40 for LOIs [2024-11-14 04:20:27,351 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 56 for LOIs [2024-11-14 04:20:27,364 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 38 for LOIs [2024-11-14 04:20:27,398 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:20:32,720 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6192#(and (not (= 2 ~waterLevel~0)) (= |old(~pumpRunning~0)| 0) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (= ~switchedOnBeforeTS~0 0) (= ~pumpRunning~0 1))' at error location [2024-11-14 04:20:32,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:20:32,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:20:32,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2024-11-14 04:20:32,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987827154] [2024-11-14 04:20:32,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:20:32,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-14 04:20:32,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:20:32,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-14 04:20:32,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1824, Unknown=0, NotChecked=0, Total=2070 [2024-11-14 04:20:32,723 INFO L87 Difference]: Start difference. First operand 276 states and 324 transitions. Second operand has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 7 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2024-11-14 04:20:34,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:20:34,218 INFO L93 Difference]: Finished difference Result 790 states and 1021 transitions. [2024-11-14 04:20:34,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-14 04:20:34,219 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 7 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 80 [2024-11-14 04:20:34,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:20:34,224 INFO L225 Difference]: With dead ends: 790 [2024-11-14 04:20:34,224 INFO L226 Difference]: Without dead ends: 522 [2024-11-14 04:20:34,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 211 SyntacticMatches, 7 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1861 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=582, Invalid=4388, Unknown=0, NotChecked=0, Total=4970 [2024-11-14 04:20:34,228 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 372 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:20:34,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 441 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 04:20:34,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-11-14 04:20:34,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 324. [2024-11-14 04:20:34,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 214 states have (on average 1.1401869158878504) internal successors, (244), 236 states have internal predecessors, (244), 54 states have call successors, (54), 49 states have call predecessors, (54), 55 states have return successors, (69), 55 states have call predecessors, (69), 54 states have call successors, (69) [2024-11-14 04:20:34,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 367 transitions. [2024-11-14 04:20:34,303 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 367 transitions. Word has length 80 [2024-11-14 04:20:34,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:20:34,304 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 367 transitions. [2024-11-14 04:20:34,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 7 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2024-11-14 04:20:34,304 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 367 transitions. [2024-11-14 04:20:34,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-14 04:20:34,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:20:34,306 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:20:34,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-14 04:20:34,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:20:34,507 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:20:34,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:20:34,507 INFO L85 PathProgramCache]: Analyzing trace with hash -615057721, now seen corresponding path program 1 times [2024-11-14 04:20:34,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:20:34,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636704450] [2024-11-14 04:20:34,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:20:34,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:20:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:20:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 9 proven. 42 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-14 04:20:35,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:20:35,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636704450] [2024-11-14 04:20:35,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636704450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:20:35,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799162997] [2024-11-14 04:20:35,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:20:35,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:20:35,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:20:35,515 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:20:35,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 04:20:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:20:35,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 04:20:35,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:20:36,094 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 55 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:20:36,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:20:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 49 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:20:36,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799162997] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:20:36,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1643573377] [2024-11-14 04:20:36,570 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2024-11-14 04:20:36,570 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:20:36,571 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:20:36,571 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:20:36,571 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:20:40,863 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 172 for LOIs [2024-11-14 04:20:40,961 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 40 for LOIs [2024-11-14 04:20:41,114 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 56 for LOIs [2024-11-14 04:20:41,124 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 38 for LOIs [2024-11-14 04:20:41,150 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:20:48,625 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8508#(and (not (= 2 ~waterLevel~0)) (= |old(~pumpRunning~0)| 0) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (= ~switchedOnBeforeTS~0 0) (= ~pumpRunning~0 1))' at error location [2024-11-14 04:20:48,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:20:48,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:20:48,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 32 [2024-11-14 04:20:48,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453367210] [2024-11-14 04:20:48,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:20:48,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-14 04:20:48,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:20:48,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-14 04:20:48,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=2847, Unknown=0, NotChecked=0, Total=3192 [2024-11-14 04:20:48,628 INFO L87 Difference]: Start difference. First operand 324 states and 367 transitions. Second operand has 32 states, 31 states have (on average 4.516129032258065) internal successors, (140), 31 states have internal predecessors, (140), 17 states have call successors, (26), 8 states have call predecessors, (26), 12 states have return successors, (24), 16 states have call predecessors, (24), 16 states have call successors, (24) [2024-11-14 04:20:51,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:20:51,103 INFO L93 Difference]: Finished difference Result 809 states and 951 transitions. [2024-11-14 04:20:51,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-14 04:20:51,105 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.516129032258065) internal successors, (140), 31 states have internal predecessors, (140), 17 states have call successors, (26), 8 states have call predecessors, (26), 12 states have return successors, (24), 16 states have call predecessors, (24), 16 states have call successors, (24) Word has length 85 [2024-11-14 04:20:51,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:20:51,106 INFO L225 Difference]: With dead ends: 809 [2024-11-14 04:20:51,107 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 04:20:51,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 222 SyntacticMatches, 16 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3946 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=1273, Invalid=8627, Unknown=0, NotChecked=0, Total=9900 [2024-11-14 04:20:51,116 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 725 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 2253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 580 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:20:51,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 955 Invalid, 2253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [580 Valid, 1673 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 04:20:51,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 04:20:51,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 04:20:51,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:20:51,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 04:20:51,117 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85 [2024-11-14 04:20:51,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:20:51,118 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 04:20:51,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.516129032258065) internal successors, (140), 31 states have internal predecessors, (140), 17 states have call successors, (26), 8 states have call predecessors, (26), 12 states have return successors, (24), 16 states have call predecessors, (24), 16 states have call successors, (24) [2024-11-14 04:20:51,118 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 04:20:51,118 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 04:20:51,123 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 04:20:51,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 04:20:51,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-14 04:20:51,327 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:20:51,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-14 04:20:58,838 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 04:20:58,887 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse0 (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (.cse1 (= |old(~pumpRunning~0)| 0))) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or (not .cse0) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (let ((.cse3 (= |old(~waterLevel~0)| 2)) (.cse5 (<= 1 |old(~pumpRunning~0)|)) (.cse4 (<= |old(~waterLevel~0)| 2)) (.cse2 (not (= 0 ~systemActive~0)))) (or (and .cse1 .cse2 .cse3) (and .cse1 (<= 1 |old(~switchedOnBeforeTS~0)|) .cse4 .cse2) (and .cse5 .cse2 .cse3) (and .cse0 .cse4 .cse5 .cse2) (and (= |old(~waterLevel~0)| 1) .cse1 .cse2) (and .cse1 .cse0 .cse4 .cse2))) (= |old(~waterLevel~0)| ~waterLevel~0) (or (not .cse1) (< |old(~switchedOnBeforeTS~0)| 1) (<= 1 ~switchedOnBeforeTS~0)))) Eliminated clause: (exists ((|old(~switchedOnBeforeTS~0)| Int)) (let ((.cse0 (= ~pumpRunning~0 |old(~switchedOnBeforeTS~0)|)) (.cse1 (= ~pumpRunning~0 0))) (and (or (not .cse0) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (or (not .cse1) (< |old(~switchedOnBeforeTS~0)| 1) (< 0 ~switchedOnBeforeTS~0)) (let ((.cse4 (= 2 ~waterLevel~0)) (.cse3 (<= 1 ~pumpRunning~0)) (.cse5 (<= ~waterLevel~0 2)) (.cse2 (not (= 0 ~systemActive~0)))) (or (and .cse1 (= ~waterLevel~0 1) .cse2) (and .cse3 .cse4 .cse2) (and .cse1 .cse4 .cse2) (and .cse3 .cse5 .cse0 .cse2) (and .cse1 (<= 1 |old(~switchedOnBeforeTS~0)|) .cse5 .cse2) (and .cse1 .cse5 .cse2 (= |old(~switchedOnBeforeTS~0)| 0))))))) [2024-11-14 04:20:58,902 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-14 04:20:58,908 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__highWaterSensor contained old-variable. Original clause: (and (let ((.cse0 (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|)) (.cse2 (<= 1 |old(~pumpRunning~0)|)) (.cse1 (not (= 0 ~systemActive~0)))) (or (and (= |old(~pumpRunning~0)| 0) (<= ~waterLevel~0 2) .cse0 .cse1) (and (= ~waterLevel~0 1) .cse0 .cse2 .cse1) (and (<= ~waterLevel~0 0) .cse0 .cse2 .cse1))) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) Eliminated clause: (and (= ~pumpRunning~0 ~switchedOnBeforeTS~0) (let ((.cse1 (<= 1 ~switchedOnBeforeTS~0)) (.cse0 (not (= 0 ~systemActive~0)))) (or (and (<= ~waterLevel~0 2) (= ~switchedOnBeforeTS~0 0) .cse0) (and (<= ~waterLevel~0 0) .cse1 .cse0) (and (= ~waterLevel~0 1) .cse1 .cse0)))) [2024-11-14 04:20:58,920 WARN L162 FloydHoareUtils]: Requires clause for waterRise contained old-variable. Original clause: (and (let ((.cse1 (= |old(~waterLevel~0)| 2)) (.cse3 (<= 1 ~pumpRunning~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse4 (<= |old(~waterLevel~0)| 2)) (.cse5 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse2 (not (= 0 ~systemActive~0)))) (or (and (or (and .cse0 .cse1) (and .cse0 (= |old(~waterLevel~0)| 1))) .cse2) (and .cse3 .cse2 .cse1) (and .cse0 (<= 1 ~switchedOnBeforeTS~0) .cse4 .cse2) (and .cse3 .cse4 .cse5 .cse2) (and .cse0 .cse4 .cse5 .cse2))) (= |old(~waterLevel~0)| ~waterLevel~0)) Eliminated clause: (let ((.cse0 (<= 1 ~pumpRunning~0)) (.cse4 (<= ~waterLevel~0 2)) (.cse1 (= 2 ~waterLevel~0)) (.cse3 (= ~pumpRunning~0 0)) (.cse2 (not (= 0 ~systemActive~0)))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 (= ~switchedOnBeforeTS~0 0) .cse2) (and .cse3 .cse4 (<= 1 ~switchedOnBeforeTS~0) .cse2) (and .cse0 .cse4 (= ~pumpRunning~0 ~switchedOnBeforeTS~0) .cse2) (and (or (and .cse3 .cse1) (and .cse3 (= ~waterLevel~0 1))) .cse2))) [2024-11-14 04:20:58,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:20:58 BoogieIcfgContainer [2024-11-14 04:20:58,943 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 04:20:58,943 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 04:20:58,943 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 04:20:58,944 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 04:20:58,944 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:20:03" (3/4) ... [2024-11-14 04:20:58,947 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 04:20:58,950 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-14 04:20:58,950 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-14 04:20:58,950 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-14 04:20:58,950 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-14 04:20:58,951 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2024-11-14 04:20:58,951 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-14 04:20:58,951 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2024-11-14 04:20:58,957 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 45 nodes and edges [2024-11-14 04:20:58,957 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-14 04:20:58,958 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-14 04:20:58,958 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 04:20:58,958 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 04:20:59,069 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 04:20:59,070 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-14 04:20:59,070 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 04:20:59,071 INFO L158 Benchmark]: Toolchain (without parser) took 56945.80ms. Allocated memory was 117.4MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 93.0MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 73.2MB. Max. memory is 16.1GB. [2024-11-14 04:20:59,071 INFO L158 Benchmark]: CDTParser took 1.04ms. Allocated memory is still 142.6MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:20:59,071 INFO L158 Benchmark]: CACSL2BoogieTranslator took 502.90ms. Allocated memory is still 117.4MB. Free memory was 93.0MB in the beginning and 74.1MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 04:20:59,071 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.20ms. Allocated memory is still 117.4MB. Free memory was 74.1MB in the beginning and 72.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:20:59,072 INFO L158 Benchmark]: Boogie Preprocessor took 26.03ms. Allocated memory is still 117.4MB. Free memory was 72.1MB in the beginning and 70.8MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:20:59,072 INFO L158 Benchmark]: RCFGBuilder took 723.79ms. Allocated memory is still 117.4MB. Free memory was 70.8MB in the beginning and 42.7MB in the end (delta: 28.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 04:20:59,072 INFO L158 Benchmark]: TraceAbstraction took 55493.69ms. Allocated memory was 117.4MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 42.2MB in the beginning and 1.2GB in the end (delta: -1.2GB). Peak memory consumption was 728.1MB. Max. memory is 16.1GB. [2024-11-14 04:20:59,073 INFO L158 Benchmark]: Witness Printer took 126.42ms. Allocated memory is still 1.3GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:20:59,075 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.04ms. Allocated memory is still 142.6MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 502.90ms. Allocated memory is still 117.4MB. Free memory was 93.0MB in the beginning and 74.1MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.20ms. Allocated memory is still 117.4MB. Free memory was 74.1MB in the beginning and 72.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.03ms. Allocated memory is still 117.4MB. Free memory was 72.1MB in the beginning and 70.8MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 723.79ms. Allocated memory is still 117.4MB. Free memory was 70.8MB in the beginning and 42.7MB in the end (delta: 28.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 55493.69ms. Allocated memory was 117.4MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 42.2MB in the beginning and 1.2GB in the end (delta: -1.2GB). Peak memory consumption was 728.1MB. Max. memory is 16.1GB. * Witness Printer took 126.42ms. Allocated memory is still 1.3GB. Free memory was 1.2GB in the beginning and 1.2GB 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,"wsllib_check.i","") [49] - GenericResultAtLocation [Line: 58]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [58] - GenericResultAtLocation [Line: 279]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [279] - GenericResultAtLocation [Line: 349]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [349] - GenericResultAtLocation [Line: 453]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [453] - GenericResultAtLocation [Line: 819]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [819] - GenericResultAtLocation [Line: 868]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [868] - GenericResultAtLocation [Line: 906]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [906] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 54]: 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, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 47.8s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1623 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1601 mSDsluCounter, 2864 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2192 mSDsCounter, 997 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3760 IncrementalHoareTripleChecker+Invalid, 4757 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 997 mSolverCounterUnsat, 672 mSDtfsCounter, 3760 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 942 GetRequests, 661 SyntacticMatches, 35 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6604 ImplicationChecksByTransitivity, 22.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=324occurred in iteration=9, InterpolantAutomatonStates: 137, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 275 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 762 NumberOfCodeBlocks, 762 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 973 ConstructedInterpolants, 0 QuantifiedInterpolants, 2781 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1137 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 493/581 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: 293]: Loop Invariant Derived loop invariant: (((((((((((pumpRunning == 0) && (2 == waterLevel)) && (splverifierCounter == 0)) && (switchedOnBeforeTS == 0)) && (0 != systemActive)) || ((((pumpRunning == 0) && (splverifierCounter == 0)) && (waterLevel == 1)) && (0 != systemActive))) || (((((pumpRunning == 0) && (waterLevel <= 1)) && (splverifierCounter == 0)) && (1 <= switchedOnBeforeTS)) && (0 != systemActive))) || (((((1 <= pumpRunning) && (splverifierCounter == 0)) && (waterLevel == 1)) && (pumpRunning == switchedOnBeforeTS)) && (0 != systemActive))) || ((((1 <= pumpRunning) && (2 == waterLevel)) && (splverifierCounter == 0)) && (0 != systemActive))) || (((((1 <= pumpRunning) && (splverifierCounter == 0)) && (waterLevel <= 0)) && (pumpRunning == switchedOnBeforeTS)) && (0 != systemActive))) || (((((pumpRunning == 0) && (waterLevel <= 1)) && (splverifierCounter == 0)) && (switchedOnBeforeTS == 0)) && (0 != systemActive))) - InvariantResult [Line: 292]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 918]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 102]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: ((((((pumpRunning == 0) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0)) && (0 != systemActive)) || ((((1 <= pumpRunning) && (waterLevel == 1)) && (pumpRunning == switchedOnBeforeTS)) && (0 != systemActive))) || ((((1 <= pumpRunning) && (waterLevel <= 0)) && (pumpRunning == switchedOnBeforeTS)) && (0 != systemActive))) Ensures: (((((((pumpRunning == 0) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0)) && (0 != systemActive)) || ((((1 <= pumpRunning) && (waterLevel == 1)) && (pumpRunning == switchedOnBeforeTS)) && (0 != systemActive))) || ((((1 <= pumpRunning) && (waterLevel <= 0)) && (pumpRunning == switchedOnBeforeTS)) && (0 != systemActive))) && (((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 377]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Requires: ((((((((pumpRunning == 0) && (waterLevel == 1)) && (0 != systemActive)) || (((1 <= pumpRunning) && (2 == waterLevel)) && (0 != systemActive))) || (((pumpRunning == 0) && (2 == waterLevel)) && (0 != systemActive))) || ((((pumpRunning == 0) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0)) && (0 != systemActive))) || ((((pumpRunning == 0) && (waterLevel <= 2)) && (1 <= switchedOnBeforeTS)) && (0 != systemActive))) || ((((1 <= pumpRunning) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS)) && (0 != systemActive))) Ensures: (((((((((pumpRunning == 0) && (waterLevel == 1)) && (0 != systemActive)) || (((1 <= pumpRunning) && (2 == waterLevel)) && (0 != systemActive))) || (((pumpRunning == 0) && (2 == waterLevel)) && (0 != systemActive))) || ((((pumpRunning == 0) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0)) && (0 != systemActive))) || ((((pumpRunning == 0) && (waterLevel <= 2)) && (1 <= switchedOnBeforeTS)) && (0 != systemActive))) || ((((1 <= pumpRunning) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS)) && (0 != systemActive))) && ((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 908]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((systemActive == \old(systemActive)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 75]: Procedure Contract for timeShift Derived contract for procedure timeShift. Ensures: ((((((((((1 <= pumpRunning) && (2 == waterLevel)) && (\old(waterLevel) == 2)) || (\old(pumpRunning) != 0)) || (((pumpRunning == 0) && (\old(waterLevel) == waterLevel)) && (switchedOnBeforeTS == 0))) && (((((pumpRunning == 0) && (1 <= switchedOnBeforeTS)) && ((\old(waterLevel) < 1) || (\old(waterLevel) == ((long long) waterLevel + 1)))) || (((1 <= pumpRunning) && (pumpRunning == switchedOnBeforeTS)) && ((\old(waterLevel) < 1) || (\old(waterLevel) == ((long long) waterLevel + 1))))) || (\old(pumpRunning) < 1))) && ((((pumpRunning == 0) && (\old(waterLevel) == waterLevel)) || (0 < \old(waterLevel))) || ((pumpRunning == \old(pumpRunning)) && (\old(waterLevel) == waterLevel)))) && ((((((((\old(switchedOnBeforeTS) == \old(pumpRunning)) && (\old(waterLevel) <= 2)) && (1 <= \old(pumpRunning))) || (((\old(pumpRunning) == 0) && (\old(waterLevel) <= 2)) && (\old(switchedOnBeforeTS) == 0))) || ((1 <= \old(pumpRunning)) && (\old(waterLevel) == 2))) || ((\old(pumpRunning) == 0) && (\old(waterLevel) == 2))) || ((\old(waterLevel) == 1) && (\old(pumpRunning) == 0))) || (((\old(pumpRunning) == 0) && (1 <= \old(switchedOnBeforeTS))) && (\old(waterLevel) <= 2)))) && (0 != systemActive)) && ((((systemActive == \old(systemActive)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 110]: Procedure Contract for processEnvironment__wrappee__highWaterSensor Derived contract for procedure processEnvironment__wrappee__highWaterSensor. Requires: ((pumpRunning == switchedOnBeforeTS) && (((((waterLevel <= 2) && (switchedOnBeforeTS == 0)) && (0 != systemActive)) || (((waterLevel <= 0) && (1 <= switchedOnBeforeTS)) && (0 != systemActive))) || (((waterLevel == 1) && (1 <= switchedOnBeforeTS)) && (0 != systemActive)))) Ensures: ((((((\old(pumpRunning) != 0) || (pumpRunning == 0)) || ((1 <= pumpRunning) && (2 == waterLevel))) && ((\old(pumpRunning) < 1) || (pumpRunning == switchedOnBeforeTS))) && ((((((\old(pumpRunning) == 0) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0)) && (0 != systemActive)) || ((((waterLevel == 1) && (switchedOnBeforeTS == \old(pumpRunning))) && (1 <= \old(pumpRunning))) && (0 != systemActive))) || ((((waterLevel <= 0) && (switchedOnBeforeTS == \old(pumpRunning))) && (1 <= \old(pumpRunning))) && (0 != systemActive)))) && ((((((systemActive == \old(systemActive)) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 365]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: (((((((1 <= pumpRunning) && (2 == waterLevel)) && (0 != systemActive)) || ((((pumpRunning == 0) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0)) && (0 != systemActive))) || ((((pumpRunning == 0) && (waterLevel <= 2)) && (1 <= switchedOnBeforeTS)) && (0 != systemActive))) || ((((1 <= pumpRunning) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS)) && (0 != systemActive))) || ((((pumpRunning == 0) && (2 == waterLevel)) || ((pumpRunning == 0) && (waterLevel == 1))) && (0 != systemActive))) Ensures: ((((((((pumpRunning == 0) || (0 < \old(waterLevel))) || (waterLevel < 2)) && ((2 == waterLevel) || (\old(waterLevel) != 2))) && ((2 == waterLevel) || (\old(waterLevel) != 1))) && ((((((((pumpRunning == 0) && (\old(waterLevel) == 2)) || ((pumpRunning == 0) && (\old(waterLevel) == 1))) && (0 != systemActive)) || ((((pumpRunning == 0) && (\old(waterLevel) <= 2)) && (switchedOnBeforeTS == 0)) && (0 != systemActive))) || (((1 <= pumpRunning) && (0 != systemActive)) && (\old(waterLevel) == 2))) || ((((pumpRunning == 0) && (1 <= switchedOnBeforeTS)) && (\old(waterLevel) <= 2)) && (0 != systemActive))) || ((((1 <= pumpRunning) && (\old(waterLevel) <= 2)) && (pumpRunning == switchedOnBeforeTS)) && (0 != systemActive)))) && (waterLevel <= 2)) && ((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 188]: Procedure Contract for isPumpRunning Derived contract for procedure isPumpRunning. Requires: ((((((((pumpRunning == 0) && (waterLevel == 1)) && (0 != systemActive)) || (((1 <= pumpRunning) && (2 == waterLevel)) && (0 != systemActive))) || (((pumpRunning == 0) && (2 == waterLevel)) && (0 != systemActive))) || ((((pumpRunning == 0) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0)) && (0 != systemActive))) || ((((pumpRunning == 0) && (waterLevel <= 2)) && (1 <= switchedOnBeforeTS)) && (0 != systemActive))) || ((((1 <= pumpRunning) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS)) && (0 != systemActive))) Ensures: (((((((((((1 <= pumpRunning) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS)) || ((1 <= pumpRunning) && (2 == waterLevel))) || ((pumpRunning == 0) && (2 == waterLevel))) || (((pumpRunning == 0) && (waterLevel <= 2)) && (1 <= switchedOnBeforeTS))) || ((pumpRunning == 0) && (waterLevel == 1))) || (((pumpRunning == 0) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0))) && (pumpRunning == \result)) && (0 != systemActive)) && (((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) RESULT: Ultimate proved your program to be correct! [2024-11-14 04:20:59,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabf220b-a572-456c-b082-e2e3eaf82450/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