./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product53.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_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/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_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/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_e466e667-e8e6-41df-a25d-8d82acbb7aee/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 e91d5c860cfea17112af53939b2fffb1e4c536355098377ab18c754994d1bc2b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:23:30,831 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:23:30,895 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:23:30,900 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:23:30,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:23:30,947 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:23:30,948 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:23:30,948 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:23:30,948 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:23:30,949 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:23:30,949 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:23:30,949 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:23:30,949 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:23:30,949 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:23:30,949 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:23:30,949 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:23:30,949 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:23:30,949 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:23:30,950 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:23:30,950 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:23:30,950 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:23:30,950 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:23:30,950 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:23:30,951 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:23:30,951 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:23:30,953 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:23:30,954 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:23:30,954 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:23:30,954 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:23:30,954 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:23:30,954 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:23:30,954 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:23:30,954 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:23:30,955 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:23:30,955 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:23:30,955 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:23:30,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:23:30,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:23:30,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:23:30,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:23:30,956 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:23:30,956 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:23:30,956 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:23:30,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:23:30,957 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:23:30,957 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:23:30,957 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:23:30,957 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_e466e667-e8e6-41df-a25d-8d82acbb7aee/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 -> e91d5c860cfea17112af53939b2fffb1e4c536355098377ab18c754994d1bc2b [2024-11-14 03:23:31,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:23:31,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:23:31,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:23:31,303 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:23:31,305 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:23:31,307 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c Unable to find full path for "g++" [2024-11-14 03:23:33,220 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:23:33,621 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:23:33,621 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c [2024-11-14 03:23:33,634 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/data/d0e0ae512/c47fcd81805d4847afdb2ab5d13db11d/FLAG21e0440b8 [2024-11-14 03:23:33,806 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/data/d0e0ae512/c47fcd81805d4847afdb2ab5d13db11d [2024-11-14 03:23:33,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:23:33,810 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:23:33,812 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:23:33,812 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:23:33,817 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:23:33,818 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:23:33" (1/1) ... [2024-11-14 03:23:33,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fc48922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:23:33, skipping insertion in model container [2024-11-14 03:23:33,819 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:23:33" (1/1) ... [2024-11-14 03:23:33,850 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:23:34,142 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_e466e667-e8e6-41df-a25d-8d82acbb7aee/sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c[15987,16000] [2024-11-14 03:23:34,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:23:34,188 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:23:34,197 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [49] [2024-11-14 03:23:34,199 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [415] [2024-11-14 03:23:34,200 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [484] [2024-11-14 03:23:34,200 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [717] [2024-11-14 03:23:34,200 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [755] [2024-11-14 03:23:34,200 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [764] [2024-11-14 03:23:34,200 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [868] [2024-11-14 03:23:34,201 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [894] [2024-11-14 03:23:34,285 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_e466e667-e8e6-41df-a25d-8d82acbb7aee/sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c[15987,16000] [2024-11-14 03:23:34,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:23:34,322 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:23:34,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:23:34 WrapperNode [2024-11-14 03:23:34,324 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:23:34,325 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:23:34,326 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:23:34,326 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:23:34,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:23:34" (1/1) ... [2024-11-14 03:23:34,350 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:23:34" (1/1) ... [2024-11-14 03:23:34,393 INFO L138 Inliner]: procedures = 56, calls = 102, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 227 [2024-11-14 03:23:34,393 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:23:34,394 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:23:34,394 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:23:34,394 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:23:34,404 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:23:34" (1/1) ... [2024-11-14 03:23:34,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:23:34" (1/1) ... [2024-11-14 03:23:34,408 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:23:34" (1/1) ... [2024-11-14 03:23:34,408 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:23:34" (1/1) ... [2024-11-14 03:23:34,418 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:23:34" (1/1) ... [2024-11-14 03:23:34,428 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:23:34" (1/1) ... [2024-11-14 03:23:34,429 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:23:34" (1/1) ... [2024-11-14 03:23:34,430 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:23:34" (1/1) ... [2024-11-14 03:23:34,436 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:23:34,436 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:23:34,436 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:23:34,437 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:23:34,442 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:23:34" (1/1) ... [2024-11-14 03:23:34,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:23:34,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:23:34,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:23:34,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:23:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:23:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-14 03:23:34,513 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-14 03:23:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-14 03:23:34,514 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-14 03:23:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-14 03:23:34,514 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-14 03:23:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2024-11-14 03:23:34,514 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2024-11-14 03:23:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-14 03:23:34,514 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-14 03:23:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2024-11-14 03:23:34,514 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2024-11-14 03:23:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2024-11-14 03:23:34,514 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2024-11-14 03:23:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:23:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-14 03:23:34,515 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-14 03:23:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:23:34,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:23:34,610 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:23:34,612 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:23:35,032 INFO L? ?]: Removed 52 outVars from TransFormulas that were not future-live. [2024-11-14 03:23:35,032 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:23:35,167 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:23:35,168 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 03:23:35,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:23:35 BoogieIcfgContainer [2024-11-14 03:23:35,168 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:23:35,172 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:23:35,172 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:23:35,177 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:23:35,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:23:33" (1/3) ... [2024-11-14 03:23:35,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14542230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:23:35, skipping insertion in model container [2024-11-14 03:23:35,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:23:34" (2/3) ... [2024-11-14 03:23:35,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14542230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:23:35, skipping insertion in model container [2024-11-14 03:23:35,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:23:35" (3/3) ... [2024-11-14 03:23:35,180 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product53.cil.c [2024-11-14 03:23:35,198 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:23:35,199 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG minepump_spec4_product53.cil.c that has 9 procedures, 62 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-14 03:23:35,288 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:23:35,301 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;@4239822b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:23:35,302 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:23:35,306 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 48 states have internal predecessors, (55), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 9 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-14 03:23:35,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 03:23:35,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:23:35,314 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:23:35,315 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:23:35,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:23:35,320 INFO L85 PathProgramCache]: Analyzing trace with hash 154359708, now seen corresponding path program 1 times [2024-11-14 03:23:35,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:23:35,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994999524] [2024-11-14 03:23:35,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:23:35,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:23:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:23:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:23:35,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:23:35,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994999524] [2024-11-14 03:23:35,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994999524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:23:35,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:23:35,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:23:35,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017808238] [2024-11-14 03:23:35,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:23:35,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 03:23:35,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:23:35,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 03:23:35,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 03:23:35,544 INFO L87 Difference]: Start difference. First operand has 62 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 48 states have internal predecessors, (55), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 9 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:23:35,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:23:35,627 INFO L93 Difference]: Finished difference Result 122 states and 167 transitions. [2024-11-14 03:23:35,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 03:23:35,630 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-14 03:23:35,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:23:35,641 INFO L225 Difference]: With dead ends: 122 [2024-11-14 03:23:35,642 INFO L226 Difference]: Without dead ends: 57 [2024-11-14 03:23:35,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 03:23:35,649 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:23:35,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:23:35,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-14 03:23:35,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-14 03:23:35,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 44 states have internal predecessors, (47), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 03:23:35,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2024-11-14 03:23:35,703 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 12 [2024-11-14 03:23:35,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:23:35,705 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2024-11-14 03:23:35,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:23:35,705 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2024-11-14 03:23:35,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 03:23:35,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:23:35,708 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:23:35,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:23:35,708 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:23:35,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:23:35,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1269574434, now seen corresponding path program 1 times [2024-11-14 03:23:35,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:23:35,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462517982] [2024-11-14 03:23:35,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:23:35,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:23:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:23:35,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:23:35,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:23:35,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462517982] [2024-11-14 03:23:35,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462517982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:23:35,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:23:35,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:23:35,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570569171] [2024-11-14 03:23:35,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:23:35,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:23:35,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:23:35,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:23:35,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:23:35,863 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:23:35,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:23:35,934 INFO L93 Difference]: Finished difference Result 91 states and 119 transitions. [2024-11-14 03:23:35,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:23:35,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-14 03:23:35,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:23:35,937 INFO L225 Difference]: With dead ends: 91 [2024-11-14 03:23:35,937 INFO L226 Difference]: Without dead ends: 49 [2024-11-14 03:23:35,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:23:35,940 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:23:35,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 87 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:23:35,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-14 03:23:35,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-14 03:23:35,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 39 states have internal predecessors, (41), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 6 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-14 03:23:35,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2024-11-14 03:23:35,955 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 13 [2024-11-14 03:23:35,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:23:35,957 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2024-11-14 03:23:35,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:23:35,957 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2024-11-14 03:23:35,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 03:23:35,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:23:35,958 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:23:35,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 03:23:35,958 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:23:35,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:23:35,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1331423497, now seen corresponding path program 1 times [2024-11-14 03:23:35,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:23:35,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787002459] [2024-11-14 03:23:35,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:23:35,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:23:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:23:36,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:23:36,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:23:36,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787002459] [2024-11-14 03:23:36,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787002459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:23:36,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:23:36,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:23:36,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826035978] [2024-11-14 03:23:36,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:23:36,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:23:36,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:23:36,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:23:36,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:23:36,066 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:23:36,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:23:36,136 INFO L93 Difference]: Finished difference Result 96 states and 125 transitions. [2024-11-14 03:23:36,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:23:36,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-14 03:23:36,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:23:36,139 INFO L225 Difference]: With dead ends: 96 [2024-11-14 03:23:36,140 INFO L226 Difference]: Without dead ends: 49 [2024-11-14 03:23:36,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:23:36,141 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 52 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:23:36,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 46 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:23:36,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-14 03:23:36,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-14 03:23:36,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 39 states have internal predecessors, (40), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 6 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-14 03:23:36,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2024-11-14 03:23:36,158 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 15 [2024-11-14 03:23:36,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:23:36,161 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2024-11-14 03:23:36,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:23:36,161 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2024-11-14 03:23:36,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 03:23:36,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:23:36,163 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:23:36,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:23:36,163 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:23:36,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:23:36,164 INFO L85 PathProgramCache]: Analyzing trace with hash 403153904, now seen corresponding path program 1 times [2024-11-14 03:23:36,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:23:36,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788912607] [2024-11-14 03:23:36,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:23:36,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:23:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:23:36,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:23:36,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:23:36,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788912607] [2024-11-14 03:23:36,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788912607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:23:36,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:23:36,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:23:36,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659639486] [2024-11-14 03:23:36,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:23:36,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:23:36,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:23:36,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:23:36,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:23:36,315 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:23:36,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:23:36,431 INFO L93 Difference]: Finished difference Result 130 states and 170 transitions. [2024-11-14 03:23:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:23:36,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-14 03:23:36,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:23:36,436 INFO L225 Difference]: With dead ends: 130 [2024-11-14 03:23:36,436 INFO L226 Difference]: Without dead ends: 83 [2024-11-14 03:23:36,436 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 03:23:36,437 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 37 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:23:36,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 93 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:23:36,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-14 03:23:36,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2024-11-14 03:23:36,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 61 states have internal predecessors, (67), 14 states have call successors, (14), 13 states have call predecessors, (14), 13 states have return successors, (20), 12 states have call predecessors, (20), 14 states have call successors, (20) [2024-11-14 03:23:36,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 101 transitions. [2024-11-14 03:23:36,480 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 101 transitions. Word has length 21 [2024-11-14 03:23:36,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:23:36,480 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 101 transitions. [2024-11-14 03:23:36,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:23:36,480 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 101 transitions. [2024-11-14 03:23:36,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 03:23:36,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:23:36,481 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:23:36,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 03:23:36,482 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:23:36,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:23:36,482 INFO L85 PathProgramCache]: Analyzing trace with hash 266578645, now seen corresponding path program 1 times [2024-11-14 03:23:36,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:23:36,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100340880] [2024-11-14 03:23:36,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:23:36,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:23:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:23:36,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:23:36,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:23:36,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100340880] [2024-11-14 03:23:36,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100340880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:23:36,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:23:36,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:23:36,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143078958] [2024-11-14 03:23:36,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:23:36,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:23:36,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:23:36,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:23:36,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:23:36,863 INFO L87 Difference]: Start difference. First operand 81 states and 101 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:23:37,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:23:37,068 INFO L93 Difference]: Finished difference Result 231 states and 288 transitions. [2024-11-14 03:23:37,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:23:37,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2024-11-14 03:23:37,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:23:37,070 INFO L225 Difference]: With dead ends: 231 [2024-11-14 03:23:37,071 INFO L226 Difference]: Without dead ends: 152 [2024-11-14 03:23:37,071 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 03:23:37,076 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 94 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:23:37,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 139 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:23:37,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-14 03:23:37,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 124. [2024-11-14 03:23:37,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 83 states have (on average 1.2409638554216869) internal successors, (103), 92 states have internal predecessors, (103), 19 states have call successors, (19), 18 states have call predecessors, (19), 21 states have return successors, (28), 19 states have call predecessors, (28), 19 states have call successors, (28) [2024-11-14 03:23:37,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 150 transitions. [2024-11-14 03:23:37,122 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 150 transitions. Word has length 28 [2024-11-14 03:23:37,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:23:37,126 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 150 transitions. [2024-11-14 03:23:37,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:23:37,126 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 150 transitions. [2024-11-14 03:23:37,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 03:23:37,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:23:37,127 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:23:37,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 03:23:37,128 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:23:37,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:23:37,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1270611013, now seen corresponding path program 1 times [2024-11-14 03:23:37,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:23:37,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572173411] [2024-11-14 03:23:37,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:23:37,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:23:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:23:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:23:37,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:23:37,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572173411] [2024-11-14 03:23:37,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572173411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:23:37,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:23:37,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 03:23:37,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032443382] [2024-11-14 03:23:37,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:23:37,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:23:37,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:23:37,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:23:37,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:23:37,487 INFO L87 Difference]: Start difference. First operand 124 states and 150 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:23:37,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:23:37,996 INFO L93 Difference]: Finished difference Result 302 states and 371 transitions. [2024-11-14 03:23:37,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 03:23:37,997 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2024-11-14 03:23:37,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:23:37,999 INFO L225 Difference]: With dead ends: 302 [2024-11-14 03:23:38,002 INFO L226 Difference]: Without dead ends: 213 [2024-11-14 03:23:38,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-14 03:23:38,004 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 156 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:23:38,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 170 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:23:38,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-14 03:23:38,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 200. [2024-11-14 03:23:38,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 134 states have (on average 1.2313432835820894) internal successors, (165), 150 states have internal predecessors, (165), 31 states have call successors, (31), 27 states have call predecessors, (31), 34 states have return successors, (47), 32 states have call predecessors, (47), 31 states have call successors, (47) [2024-11-14 03:23:38,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 243 transitions. [2024-11-14 03:23:38,061 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 243 transitions. Word has length 31 [2024-11-14 03:23:38,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:23:38,062 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 243 transitions. [2024-11-14 03:23:38,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:23:38,062 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 243 transitions. [2024-11-14 03:23:38,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 03:23:38,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:23:38,065 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:23:38,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 03:23:38,065 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:23:38,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:23:38,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1714712180, now seen corresponding path program 1 times [2024-11-14 03:23:38,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:23:38,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242256448] [2024-11-14 03:23:38,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:23:38,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:23:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:23:38,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:23:38,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:23:38,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242256448] [2024-11-14 03:23:38,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242256448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:23:38,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:23:38,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:23:38,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837084511] [2024-11-14 03:23:38,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:23:38,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:23:38,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:23:38,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:23:38,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:23:38,248 INFO L87 Difference]: Start difference. First operand 200 states and 243 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:23:38,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:23:38,407 INFO L93 Difference]: Finished difference Result 399 states and 486 transitions. [2024-11-14 03:23:38,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:23:38,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-14 03:23:38,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:23:38,411 INFO L225 Difference]: With dead ends: 399 [2024-11-14 03:23:38,412 INFO L226 Difference]: Without dead ends: 201 [2024-11-14 03:23:38,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:23:38,417 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 27 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:23:38,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 191 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:23:38,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-14 03:23:38,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2024-11-14 03:23:38,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 133 states have (on average 1.218045112781955) internal successors, (162), 149 states have internal predecessors, (162), 31 states have call successors, (31), 27 states have call predecessors, (31), 34 states have return successors, (47), 32 states have call predecessors, (47), 31 states have call successors, (47) [2024-11-14 03:23:38,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 240 transitions. [2024-11-14 03:23:38,477 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 240 transitions. Word has length 31 [2024-11-14 03:23:38,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:23:38,477 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 240 transitions. [2024-11-14 03:23:38,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:23:38,477 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 240 transitions. [2024-11-14 03:23:38,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-14 03:23:38,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:23:38,480 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:23:38,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 03:23:38,480 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:23:38,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:23:38,480 INFO L85 PathProgramCache]: Analyzing trace with hash -890061413, now seen corresponding path program 1 times [2024-11-14 03:23:38,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:23:38,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193302593] [2024-11-14 03:23:38,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:23:38,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:23:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:23:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 03:23:38,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:23:38,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193302593] [2024-11-14 03:23:38,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193302593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:23:38,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:23:38,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:23:38,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972540625] [2024-11-14 03:23:38,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:23:38,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:23:38,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:23:38,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:23:38,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:23:38,596 INFO L87 Difference]: Start difference. First operand 199 states and 240 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 03:23:38,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:23:38,750 INFO L93 Difference]: Finished difference Result 485 states and 596 transitions. [2024-11-14 03:23:38,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:23:38,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2024-11-14 03:23:38,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:23:38,757 INFO L225 Difference]: With dead ends: 485 [2024-11-14 03:23:38,757 INFO L226 Difference]: Without dead ends: 389 [2024-11-14 03:23:38,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:23:38,758 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 43 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:23:38,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 142 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:23:38,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-11-14 03:23:38,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 377. [2024-11-14 03:23:38,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 258 states have (on average 1.2170542635658914) internal successors, (314), 282 states have internal predecessors, (314), 55 states have call successors, (55), 49 states have call predecessors, (55), 63 states have return successors, (87), 59 states have call predecessors, (87), 55 states have call successors, (87) [2024-11-14 03:23:38,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 456 transitions. [2024-11-14 03:23:38,818 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 456 transitions. Word has length 50 [2024-11-14 03:23:38,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:23:38,818 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 456 transitions. [2024-11-14 03:23:38,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 03:23:38,819 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 456 transitions. [2024-11-14 03:23:38,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-14 03:23:38,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:23:38,821 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:23:38,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 03:23:38,822 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:23:38,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:23:38,822 INFO L85 PathProgramCache]: Analyzing trace with hash -529980590, now seen corresponding path program 1 times [2024-11-14 03:23:38,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:23:38,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858983553] [2024-11-14 03:23:38,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:23:38,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:23:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:23:38,924 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 03:23:38,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:23:38,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858983553] [2024-11-14 03:23:38,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858983553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:23:38,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:23:38,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:23:38,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489526918] [2024-11-14 03:23:38,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:23:38,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:23:38,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:23:38,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:23:38,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:23:38,926 INFO L87 Difference]: Start difference. First operand 377 states and 456 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-14 03:23:39,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:23:39,058 INFO L93 Difference]: Finished difference Result 379 states and 457 transitions. [2024-11-14 03:23:39,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:23:39,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 53 [2024-11-14 03:23:39,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:23:39,063 INFO L225 Difference]: With dead ends: 379 [2024-11-14 03:23:39,063 INFO L226 Difference]: Without dead ends: 377 [2024-11-14 03:23:39,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:23:39,065 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 42 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:23:39,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 140 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:23:39,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-14 03:23:39,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2024-11-14 03:23:39,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 258 states have (on average 1.2015503875968991) internal successors, (310), 282 states have internal predecessors, (310), 55 states have call successors, (55), 49 states have call predecessors, (55), 63 states have return successors, (87), 59 states have call predecessors, (87), 55 states have call successors, (87) [2024-11-14 03:23:39,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 452 transitions. [2024-11-14 03:23:39,126 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 452 transitions. Word has length 53 [2024-11-14 03:23:39,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:23:39,126 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 452 transitions. [2024-11-14 03:23:39,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-14 03:23:39,126 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 452 transitions. [2024-11-14 03:23:39,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-14 03:23:39,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:23:39,128 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:23:39,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-14 03:23:39,129 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:23:39,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:23:39,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1352439094, now seen corresponding path program 1 times [2024-11-14 03:23:39,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:23:39,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140843754] [2024-11-14 03:23:39,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:23:39,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:23:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:23:39,267 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 03:23:39,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:23:39,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140843754] [2024-11-14 03:23:39,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140843754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:23:39,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912675732] [2024-11-14 03:23:39,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:23:39,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:23:39,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:23:39,273 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:23:39,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:23:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:23:39,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:23:39,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:23:39,530 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:23:39,530 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:23:39,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912675732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:23:39,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:23:39,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-14 03:23:39,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187017859] [2024-11-14 03:23:39,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:23:39,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:23:39,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:23:39,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:23:39,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:23:39,532 INFO L87 Difference]: Start difference. First operand 377 states and 452 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-14 03:23:39,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:23:39,671 INFO L93 Difference]: Finished difference Result 570 states and 698 transitions. [2024-11-14 03:23:39,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:23:39,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 57 [2024-11-14 03:23:39,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:23:39,677 INFO L225 Difference]: With dead ends: 570 [2024-11-14 03:23:39,677 INFO L226 Difference]: Without dead ends: 375 [2024-11-14 03:23:39,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:23:39,679 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 30 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:23:39,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 97 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:23:39,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-11-14 03:23:39,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2024-11-14 03:23:39,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 258 states have (on average 1.1705426356589148) internal successors, (302), 280 states have internal predecessors, (302), 53 states have call successors, (53), 49 states have call predecessors, (53), 63 states have return successors, (73), 59 states have call predecessors, (73), 53 states have call successors, (73) [2024-11-14 03:23:39,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 428 transitions. [2024-11-14 03:23:39,756 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 428 transitions. Word has length 57 [2024-11-14 03:23:39,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:23:39,757 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 428 transitions. [2024-11-14 03:23:39,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-14 03:23:39,757 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 428 transitions. [2024-11-14 03:23:39,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-14 03:23:39,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:23:39,758 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:23:39,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 03:23:39,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:23:39,959 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:23:39,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:23:39,960 INFO L85 PathProgramCache]: Analyzing trace with hash -986913445, now seen corresponding path program 1 times [2024-11-14 03:23:39,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:23:39,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272413439] [2024-11-14 03:23:39,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:23:39,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:23:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:23:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:23:40,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:23:40,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272413439] [2024-11-14 03:23:40,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272413439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:23:40,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879250490] [2024-11-14 03:23:40,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:23:40,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:23:40,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:23:40,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:23:40,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:23:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:23:40,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 03:23:40,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:23:41,366 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:23:41,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:23:41,984 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 03:23:41,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879250490] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:23:41,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1175499075] [2024-11-14 03:23:42,007 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2024-11-14 03:23:42,007 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:23:42,011 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:23:42,015 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:23:42,016 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:23:44,761 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 142 for LOIs [2024-11-14 03:23:44,871 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 31 for LOIs [2024-11-14 03:23:45,041 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 41 for LOIs [2024-11-14 03:23:45,176 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 44 for LOIs [2024-11-14 03:23:45,294 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 35 for LOIs [2024-11-14 03:23:45,300 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:23:49,434 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7659#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (<= 0 (+ ~pumpRunning~0 2147483648)) (= ~waterLevel~0 0))' at error location [2024-11-14 03:23:49,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:23:49,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:23:49,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 10] total 29 [2024-11-14 03:23:49,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569752912] [2024-11-14 03:23:49,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:23:49,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-14 03:23:49,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:23:49,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-14 03:23:49,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=2449, Unknown=0, NotChecked=0, Total=2756 [2024-11-14 03:23:49,438 INFO L87 Difference]: Start difference. First operand 375 states and 428 transitions. Second operand has 29 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 25 states have internal predecessors, (100), 12 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 12 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-14 03:23:53,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:23:53,445 INFO L93 Difference]: Finished difference Result 1070 states and 1263 transitions. [2024-11-14 03:23:53,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-14 03:23:53,446 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 25 states have internal predecessors, (100), 12 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 12 states have call predecessors, (19), 11 states have call successors, (19) Word has length 61 [2024-11-14 03:23:53,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:23:53,454 INFO L225 Difference]: With dead ends: 1070 [2024-11-14 03:23:53,455 INFO L226 Difference]: Without dead ends: 883 [2024-11-14 03:23:53,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 151 SyntacticMatches, 10 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5278 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=2057, Invalid=12463, Unknown=0, NotChecked=0, Total=14520 [2024-11-14 03:23:53,463 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 959 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 2645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 03:23:53,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 810 Invalid, 2645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 03:23:53,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2024-11-14 03:23:53,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 567. [2024-11-14 03:23:53,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 397 states have (on average 1.1788413098236776) internal successors, (468), 423 states have internal predecessors, (468), 75 states have call successors, (75), 70 states have call predecessors, (75), 94 states have return successors, (103), 90 states have call predecessors, (103), 75 states have call successors, (103) [2024-11-14 03:23:53,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 646 transitions. [2024-11-14 03:23:53,566 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 646 transitions. Word has length 61 [2024-11-14 03:23:53,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:23:53,567 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 646 transitions. [2024-11-14 03:23:53,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 25 states have internal predecessors, (100), 12 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 12 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-14 03:23:53,567 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 646 transitions. [2024-11-14 03:23:53,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-14 03:23:53,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:23:53,570 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:23:53,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 03:23:53,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-14 03:23:53,774 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:23:53,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:23:53,775 INFO L85 PathProgramCache]: Analyzing trace with hash -417289311, now seen corresponding path program 2 times [2024-11-14 03:23:53,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:23:53,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216719516] [2024-11-14 03:23:53,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:23:53,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:23:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:23:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 03:23:54,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:23:54,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216719516] [2024-11-14 03:23:54,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216719516] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:23:54,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362568814] [2024-11-14 03:23:54,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:23:54,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:23:54,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:23:54,624 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:23:54,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 03:23:54,709 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-14 03:23:54,709 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:23:54,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:23:54,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:23:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-14 03:23:54,805 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:23:54,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362568814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:23:54,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:23:54,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [18] total 21 [2024-11-14 03:23:54,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702271747] [2024-11-14 03:23:54,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:23:54,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:23:54,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:23:54,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:23:54,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-14 03:23:54,807 INFO L87 Difference]: Start difference. First operand 567 states and 646 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-14 03:23:54,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:23:54,959 INFO L93 Difference]: Finished difference Result 1105 states and 1275 transitions. [2024-11-14 03:23:54,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:23:54,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 79 [2024-11-14 03:23:54,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:23:54,965 INFO L225 Difference]: With dead ends: 1105 [2024-11-14 03:23:54,966 INFO L226 Difference]: Without dead ends: 601 [2024-11-14 03:23:54,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2024-11-14 03:23:54,970 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 18 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:23:54,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 209 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:23:54,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2024-11-14 03:23:55,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 563. [2024-11-14 03:23:55,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 393 states have (on average 1.1603053435114503) internal successors, (456), 419 states have internal predecessors, (456), 75 states have call successors, (75), 70 states have call predecessors, (75), 94 states have return successors, (103), 90 states have call predecessors, (103), 75 states have call successors, (103) [2024-11-14 03:23:55,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 634 transitions. [2024-11-14 03:23:55,047 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 634 transitions. Word has length 79 [2024-11-14 03:23:55,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:23:55,048 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 634 transitions. [2024-11-14 03:23:55,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-14 03:23:55,048 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 634 transitions. [2024-11-14 03:23:55,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-14 03:23:55,050 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:23:55,050 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:23:55,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 03:23:55,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-14 03:23:55,251 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:23:55,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:23:55,251 INFO L85 PathProgramCache]: Analyzing trace with hash 852440769, now seen corresponding path program 1 times [2024-11-14 03:23:55,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:23:55,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522969037] [2024-11-14 03:23:55,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:23:55,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:23:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:23:55,448 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 19 proven. 26 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-14 03:23:55,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:23:55,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522969037] [2024-11-14 03:23:55,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522969037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:23:55,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572336021] [2024-11-14 03:23:55,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:23:55,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:23:55,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:23:55,451 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:23:55,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 03:23:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:23:55,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-14 03:23:55,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:23:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 61 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 03:23:56,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:23:56,839 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 64 proven. 23 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-14 03:23:56,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572336021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:23:56,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2146480415] [2024-11-14 03:23:56,843 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2024-11-14 03:23:56,844 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:23:56,844 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:23:56,844 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:23:56,845 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:23:59,351 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 167 for LOIs [2024-11-14 03:23:59,513 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 35 for LOIs [2024-11-14 03:23:59,688 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 44 for LOIs [2024-11-14 03:23:59,806 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 47 for LOIs [2024-11-14 03:23:59,885 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 3 for LOIs [2024-11-14 03:23:59,887 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 35 for LOIs [2024-11-14 03:23:59,893 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 39 for LOIs [2024-11-14 03:23:59,899 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:24:07,373 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13599#(and (<= ~methaneLevelCritical~0 1) (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (<= 0 ~methaneLevelCritical~0) (<= 0 (+ ~pumpRunning~0 2147483648)) (= ~waterLevel~0 0))' at error location [2024-11-14 03:24:07,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:24:07,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:24:07,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 13] total 28 [2024-11-14 03:24:07,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139297574] [2024-11-14 03:24:07,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:24:07,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-14 03:24:07,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:24:07,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-14 03:24:07,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=450, Invalid=3210, Unknown=0, NotChecked=0, Total=3660 [2024-11-14 03:24:07,377 INFO L87 Difference]: Start difference. First operand 563 states and 634 transitions. Second operand has 28 states, 26 states have (on average 5.769230769230769) internal successors, (150), 27 states have internal predecessors, (150), 14 states have call successors, (29), 9 states have call predecessors, (29), 12 states have return successors, (30), 15 states have call predecessors, (30), 14 states have call successors, (30) [2024-11-14 03:24:09,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:24:09,776 INFO L93 Difference]: Finished difference Result 860 states and 979 transitions. [2024-11-14 03:24:09,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-14 03:24:09,777 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 5.769230769230769) internal successors, (150), 27 states have internal predecessors, (150), 14 states have call successors, (29), 9 states have call predecessors, (29), 12 states have return successors, (30), 15 states have call predecessors, (30), 14 states have call successors, (30) Word has length 109 [2024-11-14 03:24:09,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:24:09,778 INFO L225 Difference]: With dead ends: 860 [2024-11-14 03:24:09,778 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 03:24:09,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 277 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=1234, Invalid=7886, Unknown=0, NotChecked=0, Total=9120 [2024-11-14 03:24:09,784 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 519 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:24:09,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 252 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 03:24:09,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 03:24:09,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 03:24:09,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:24:09,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 03:24:09,787 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 109 [2024-11-14 03:24:09,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:24:09,787 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 03:24:09,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 5.769230769230769) internal successors, (150), 27 states have internal predecessors, (150), 14 states have call successors, (29), 9 states have call predecessors, (29), 12 states have return successors, (30), 15 states have call predecessors, (30), 14 states have call successors, (30) [2024-11-14 03:24:09,787 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 03:24:09,787 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 03:24:09,790 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 03:24:09,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 03:24:09,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-14 03:24:09,998 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:24:09,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-14 03:24:15,232 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 03:24:15,259 WARN L162 FloydHoareUtils]: Requires clause for deactivatePump contained old-variable. Original clause: (and (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1)) (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |old(~pumpRunning~0)| 1)) (.cse2 (= ~pumpRunning~0 1))) (or (and .cse0 .cse1 (= ~waterLevel~0 1) .cse2) (and (= 2 ~waterLevel~0) .cse0 .cse1 .cse2)))) Eliminated clause: (and (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1)) (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= ~pumpRunning~0 1))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and .cse0 (= ~waterLevel~0 1) .cse1)))) [2024-11-14 03:24:15,276 WARN L162 FloydHoareUtils]: Requires clause for changeMethaneLevel contained old-variable. Original clause: (let ((.cse2 (= |old(~methaneLevelCritical~0)| 0)) (.cse6 (= |old(~methaneLevelCritical~0)| 1))) (and (let ((.cse3 (<= 2 ~waterLevel~0)) (.cse1 (= 2 ~waterLevel~0)) (.cse7 (= ~pumpRunning~0 1)) (.cse0 (= ~pumpRunning~0 0)) (.cse4 (= 1 ~systemActive~0)) (.cse5 (= ~waterLevel~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse2 .cse4 .cse5) (and .cse1 .cse6 .cse4 .cse7) (and .cse0 .cse1 .cse6 .cse3 .cse4) (and .cse1 .cse2 .cse4 .cse7) (and .cse0 .cse6 .cse4 .cse5))) (or (not .cse2) (= ~methaneLevelCritical~0 0)) (or (= ~methaneLevelCritical~0 1) (not .cse6)))) Eliminated clause: (exists ((|old(~methaneLevelCritical~0)| Int)) (let ((.cse2 (= |old(~methaneLevelCritical~0)| 0)) (.cse5 (= |old(~methaneLevelCritical~0)| 1))) (and (let ((.cse6 (= ~pumpRunning~0 1)) (.cse4 (= ~waterLevel~0 1)) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= 2 ~waterLevel~0)) (.cse3 (= 1 ~systemActive~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse2 .cse3 .cse4) (and .cse1 .cse5 .cse3 .cse6) (and .cse1 .cse2 .cse3 .cse6) (and .cse0 .cse5 .cse3 .cse4) (and .cse0 .cse1 .cse5 .cse3))) (or (not .cse2) (= ~methaneLevelCritical~0 0)) (or (= ~methaneLevelCritical~0 1) (not .cse5))))) [2024-11-14 03:24:15,285 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-14 03:24:15,295 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse3 (= |old(~waterLevel~0)| 2)) (.cse4 (= |old(~waterLevel~0)| 1)) (.cse1 (= ~pumpRunning~0 0)) (.cse7 (= 1 ~systemActive~0)) (.cse0 (= |old(~pumpRunning~0)| 0)) (.cse8 (= |old(~pumpRunning~0)| 1)) (.cse2 (= 2 ~waterLevel~0))) (and (or (not .cse0) (and .cse1 .cse2) (not .cse3)) (let ((.cse6 (= ~methaneLevelCritical~0 0)) (.cse5 (= ~methaneLevelCritical~0 1))) (or (and .cse4 .cse5) (and .cse6 .cse7 .cse0 .cse3) (and .cse6 .cse7 .cse8 .cse3) (and .cse4 .cse6) (and .cse7 .cse8 .cse5 .cse3) (and .cse7 .cse0 .cse5 .cse3))) (or (not .cse4) (and .cse1 .cse7 .cse0 (= ~waterLevel~0 1))) (or (not .cse8) (and .cse2 (= ~pumpRunning~0 1))))) Eliminated clause: (exists ((|old(~pumpRunning~0)| Int) (|old(~waterLevel~0)| Int)) (let ((.cse3 (= |old(~waterLevel~0)| 2)) (.cse4 (= |old(~waterLevel~0)| 1)) (.cse1 (= ~pumpRunning~0 0)) (.cse7 (= 1 ~systemActive~0)) (.cse0 (= |old(~pumpRunning~0)| 0)) (.cse8 (= |old(~pumpRunning~0)| 1)) (.cse2 (= 2 ~waterLevel~0))) (and (or (not .cse0) (and .cse1 .cse2) (not .cse3)) (let ((.cse6 (= ~methaneLevelCritical~0 0)) (.cse5 (= ~methaneLevelCritical~0 1))) (or (and .cse4 .cse5) (and .cse6 .cse7 .cse0 .cse3) (and .cse6 .cse7 .cse8 .cse3) (and .cse4 .cse6) (and .cse7 .cse8 .cse5 .cse3) (and .cse7 .cse0 .cse5 .cse3))) (or (not .cse4) (and .cse1 .cse7 .cse0 (= ~waterLevel~0 1))) (or (not .cse8) (and .cse2 (= ~pumpRunning~0 1)))))) [2024-11-14 03:24:15,304 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-14 03:24:15,314 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__highWaterSensor contained old-variable. Original clause: (and (= ~pumpRunning~0 0) (let ((.cse0 (= 2 ~waterLevel~0)) (.cse4 (= ~methaneLevelCritical~0 0)) (.cse5 (<= ~waterLevel~0 1)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |old(~pumpRunning~0)| 0)) (.cse3 (= ~methaneLevelCritical~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse1 .cse2) (and .cse4 .cse5 .cse1 .cse2) (and .cse5 .cse1 .cse2 .cse3)))) Eliminated clause: (and (= ~pumpRunning~0 0) (let ((.cse2 (= ~methaneLevelCritical~0 1)) (.cse3 (<= ~waterLevel~0 1)) (.cse0 (= 2 ~waterLevel~0)) (.cse4 (= ~methaneLevelCritical~0 0)) (.cse1 (= 1 ~systemActive~0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse1 .cse2) (and .cse4 .cse3 .cse1) (and .cse0 .cse4 .cse1)))) [2024-11-14 03:24:15,329 WARN L162 FloydHoareUtils]: Requires clause for waterRise contained old-variable. Original clause: (let ((.cse5 (= ~pumpRunning~0 0)) (.cse3 (= ~pumpRunning~0 1))) (and (let ((.cse2 (= |old(~waterLevel~0)| 2)) (.cse1 (= ~methaneLevelCritical~0 1)) (.cse6 (= |old(~waterLevel~0)| 1)) (.cse4 (= ~methaneLevelCritical~0 0)) (.cse0 (= 1 ~systemActive~0)) (.cse7 (<= 1 |old(~waterLevel~0)|))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse0 .cse2 .cse3) (and .cse5 .cse6 .cse0 .cse1 .cse7) (and .cse5 .cse6 .cse4 .cse0 .cse7))) (or (not .cse5) (= ~waterLevel~0 1)) (or (= 2 ~waterLevel~0) (not .cse3)))) Eliminated clause: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse4 (= ~pumpRunning~0 1))) (and (or (not .cse0) (= ~waterLevel~0 1)) (let ((.cse3 (= ~methaneLevelCritical~0 0)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= ~methaneLevelCritical~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse1) (and .cse3 .cse1 .cse4) (and .cse1 .cse2 .cse4))) (or (= 2 ~waterLevel~0) (not .cse4)))) [2024-11-14 03:24:15,344 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__lowWaterSensor contained old-variable. Original clause: (let ((.cse2 (= |old(~pumpRunning~0)| 0)) (.cse6 (= ~pumpRunning~0 0))) (and (or (and (= |old(~pumpRunning~0)| 1) (= ~pumpRunning~0 1)) (< |old(~pumpRunning~0)| 1)) (let ((.cse0 (= 2 ~waterLevel~0)) (.cse5 (<= ~waterLevel~0 1)) (.cse3 (= ~methaneLevelCritical~0 1)) (.cse4 (= ~methaneLevelCritical~0 0)) (.cse1 (= 1 ~systemActive~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse1 .cse2) (and .cse4 .cse5 .cse1 .cse2) (and .cse5 .cse1 .cse2 .cse3) (and .cse4 .cse1 (<= ~waterLevel~0 2) (<= 1 |old(~pumpRunning~0)|)))) (or (not .cse2) .cse6) (or .cse6 (<= 1 ~waterLevel~0)))) Eliminated clause: (let ((.cse6 (= ~pumpRunning~0 0))) (and (exists ((|old(~pumpRunning~0)| Int)) (let ((.cse2 (= |old(~pumpRunning~0)| 0))) (and (or (and (= |old(~pumpRunning~0)| 1) (= ~pumpRunning~0 1)) (< |old(~pumpRunning~0)| 1)) (let ((.cse0 (= 2 ~waterLevel~0)) (.cse5 (<= ~waterLevel~0 1)) (.cse3 (= ~methaneLevelCritical~0 1)) (.cse4 (= ~methaneLevelCritical~0 0)) (.cse1 (= 1 ~systemActive~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse1 .cse2) (and .cse4 .cse5 .cse1 .cse2) (and .cse5 .cse1 .cse2 .cse3) (and .cse4 .cse1 (<= ~waterLevel~0 2) (<= 1 |old(~pumpRunning~0)|)))) (or (not .cse2) .cse6)))) (or .cse6 (< 0 ~waterLevel~0)))) [2024-11-14 03:24:15,351 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-14 03:24:15,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 03:24:15 BoogieIcfgContainer [2024-11-14 03:24:15,352 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 03:24:15,353 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 03:24:15,353 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 03:24:15,353 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 03:24:15,354 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:23:35" (3/4) ... [2024-11-14 03:24:15,357 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 03:24:15,360 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2024-11-14 03:24:15,360 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-14 03:24:15,360 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-14 03:24:15,360 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-14 03:24:15,361 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-14 03:24:15,361 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2024-11-14 03:24:15,361 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-14 03:24:15,361 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__lowWaterSensor [2024-11-14 03:24:15,367 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 45 nodes and edges [2024-11-14 03:24:15,368 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-14 03:24:15,368 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-14 03:24:15,369 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 03:24:15,369 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 03:24:15,395 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\old(pumpRunning) != 0) || ((pumpRunning == 0) && (2 == waterLevel))) || (\old(waterLevel) != 2)) && (((((((\old(waterLevel) == 1) && (methaneLevelCritical == 1)) || ((((methaneLevelCritical == 0) && (1 == systemActive)) && (\old(pumpRunning) == 0)) && (\old(waterLevel) == 2))) || ((((methaneLevelCritical == 0) && (1 == systemActive)) && (\old(pumpRunning) == 1)) && (\old(waterLevel) == 2))) || ((\old(waterLevel) == 1) && (methaneLevelCritical == 0))) || ((((1 == systemActive) && (\old(pumpRunning) == 1)) && (methaneLevelCritical == 1)) && (\old(waterLevel) == 2))) || ((((1 == systemActive) && (\old(pumpRunning) == 0)) && (methaneLevelCritical == 1)) && (\old(waterLevel) == 2)))) && ((\old(waterLevel) != 1) || ((((pumpRunning == 0) && (1 == systemActive)) && (\old(pumpRunning) == 0)) && (waterLevel == 1)))) && ((\old(pumpRunning) != 1) || ((2 == waterLevel) && (pumpRunning == 1)))) [2024-11-14 03:24:15,421 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\old(pumpRunning) != 0) || ((pumpRunning == 0) && (2 == waterLevel))) || (\old(waterLevel) != 2)) && (((((((\old(waterLevel) == 1) && (methaneLevelCritical == 1)) || ((((methaneLevelCritical == 0) && (1 == systemActive)) && (\old(pumpRunning) == 0)) && (\old(waterLevel) == 2))) || ((((methaneLevelCritical == 0) && (1 == systemActive)) && (\old(pumpRunning) == 1)) && (\old(waterLevel) == 2))) || ((\old(waterLevel) == 1) && (methaneLevelCritical == 0))) || ((((1 == systemActive) && (\old(pumpRunning) == 1)) && (methaneLevelCritical == 1)) && (\old(waterLevel) == 2))) || ((((1 == systemActive) && (\old(pumpRunning) == 0)) && (methaneLevelCritical == 1)) && (\old(waterLevel) == 2)))) && ((\old(waterLevel) != 1) || ((((pumpRunning == 0) && (1 == systemActive)) && (\old(pumpRunning) == 0)) && (waterLevel == 1)))) && ((\old(pumpRunning) != 1) || ((2 == waterLevel) && (pumpRunning == 1)))) [2024-11-14 03:24:15,466 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 03:24:15,466 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-14 03:24:15,466 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 03:24:15,467 INFO L158 Benchmark]: Toolchain (without parser) took 41656.89ms. Allocated memory was 117.4MB in the beginning and 746.6MB in the end (delta: 629.1MB). Free memory was 93.5MB in the beginning and 485.1MB in the end (delta: -391.6MB). Peak memory consumption was 232.4MB. Max. memory is 16.1GB. [2024-11-14 03:24:15,467 INFO L158 Benchmark]: CDTParser took 1.11ms. Allocated memory is still 167.8MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:24:15,467 INFO L158 Benchmark]: CACSL2BoogieTranslator took 512.71ms. Allocated memory is still 117.4MB. Free memory was 93.5MB in the beginning and 74.6MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 03:24:15,467 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.41ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 72.5MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:24:15,468 INFO L158 Benchmark]: Boogie Preprocessor took 41.67ms. Allocated memory is still 117.4MB. Free memory was 72.5MB in the beginning and 71.3MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:24:15,468 INFO L158 Benchmark]: RCFGBuilder took 731.92ms. Allocated memory is still 117.4MB. Free memory was 71.3MB in the beginning and 42.6MB in the end (delta: 28.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 03:24:15,468 INFO L158 Benchmark]: TraceAbstraction took 40180.94ms. Allocated memory was 117.4MB in the beginning and 746.6MB in the end (delta: 629.1MB). Free memory was 42.3MB in the beginning and 493.5MB in the end (delta: -451.2MB). Peak memory consumption was 402.3MB. Max. memory is 16.1GB. [2024-11-14 03:24:15,469 INFO L158 Benchmark]: Witness Printer took 113.08ms. Allocated memory is still 746.6MB. Free memory was 493.5MB in the beginning and 485.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:24:15,470 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.11ms. Allocated memory is still 167.8MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 512.71ms. Allocated memory is still 117.4MB. Free memory was 93.5MB in the beginning and 74.6MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.41ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 72.5MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.67ms. Allocated memory is still 117.4MB. Free memory was 72.5MB in the beginning and 71.3MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 731.92ms. Allocated memory is still 117.4MB. Free memory was 71.3MB in the beginning and 42.6MB in the end (delta: 28.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 40180.94ms. Allocated memory was 117.4MB in the beginning and 746.6MB in the end (delta: 629.1MB). Free memory was 42.3MB in the beginning and 493.5MB in the end (delta: -451.2MB). Peak memory consumption was 402.3MB. Max. memory is 16.1GB. * Witness Printer took 113.08ms. Allocated memory is still 746.6MB. Free memory was 493.5MB in the beginning and 485.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [49] - GenericResultAtLocation [Line: 415]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [415] - GenericResultAtLocation [Line: 484]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [484] - GenericResultAtLocation [Line: 717]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [717] - GenericResultAtLocation [Line: 755]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [755] - GenericResultAtLocation [Line: 764]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [764] - GenericResultAtLocation [Line: 868]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [868] - GenericResultAtLocation [Line: 894]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [894] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 760]: 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 9 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 34.7s, OverallIterations: 13, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2005 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1984 mSDsluCounter, 2438 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1709 mSDsCounter, 974 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4066 IncrementalHoareTripleChecker+Invalid, 5040 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 974 mSolverCounterUnsat, 729 mSDtfsCounter, 4066 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 871 GetRequests, 590 SyntacticMatches, 14 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8068 ImplicationChecksByTransitivity, 16.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=567occurred in iteration=11, InterpolantAutomatonStates: 162, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 411 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 866 NumberOfCodeBlocks, 815 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1017 ConstructedInterpolants, 0 QuantifiedInterpolants, 3274 SizeOfPredicates, 14 NumberOfNonLiveVariables, 966 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 19 InterpolantComputations, 11 PerfectInterpolantSequences, 403/577 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: 906]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 430]: Loop Invariant Derived loop invariant: ((((((((pumpRunning == 0) && (methaneLevelCritical == 0)) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1)) || (((((2 == waterLevel) && (1 == systemActive)) && (methaneLevelCritical == 1)) && (splverifierCounter == 0)) && (pumpRunning == 1))) || (((((pumpRunning == 0) && (1 == systemActive)) && (methaneLevelCritical == 1)) && (splverifierCounter == 0)) && (waterLevel == 1))) || (((((2 == waterLevel) && (methaneLevelCritical == 0)) && (1 == systemActive)) && (splverifierCounter == 0)) && (pumpRunning == 1))) - InvariantResult [Line: 429]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 498]: Location Invariant Derived location invariant: ((((((\old(pumpRunning) != 0) || ((pumpRunning == 0) && (2 == waterLevel))) || (\old(waterLevel) != 2)) && (((((((\old(waterLevel) == 1) && (methaneLevelCritical == 1)) || ((((methaneLevelCritical == 0) && (1 == systemActive)) && (\old(pumpRunning) == 0)) && (\old(waterLevel) == 2))) || ((((methaneLevelCritical == 0) && (1 == systemActive)) && (\old(pumpRunning) == 1)) && (\old(waterLevel) == 2))) || ((\old(waterLevel) == 1) && (methaneLevelCritical == 0))) || ((((1 == systemActive) && (\old(pumpRunning) == 1)) && (methaneLevelCritical == 1)) && (\old(waterLevel) == 2))) || ((((1 == systemActive) && (\old(pumpRunning) == 0)) && (methaneLevelCritical == 1)) && (\old(waterLevel) == 2)))) && ((\old(waterLevel) != 1) || ((((pumpRunning == 0) && (1 == systemActive)) && (\old(pumpRunning) == 0)) && (waterLevel == 1)))) && ((\old(pumpRunning) != 1) || ((2 == waterLevel) && (pumpRunning == 1)))) - ProcedureContractResult [Line: 615]: Procedure Contract for deactivatePump Derived contract for procedure deactivatePump. Requires: (((methaneLevelCritical == 0) || (methaneLevelCritical == 1)) && ((((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == 1)) || (((1 == systemActive) && (waterLevel == 1)) && (pumpRunning == 1)))) Ensures: (((((pumpRunning == 0) && ((((\old(pumpRunning) == 1) && (methaneLevelCritical == 1)) && (waterLevel <= 2)) || (((methaneLevelCritical == 0) && (\old(pumpRunning) == 1)) && (waterLevel <= 2)))) && (1 == systemActive)) && (1 <= waterLevel)) && (((((head == \old(head)) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 522]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: (((((pumpRunning == 0) && (waterLevel <= 1)) && (1 == systemActive)) && (methaneLevelCritical == 1)) || ((((pumpRunning == 0) && (methaneLevelCritical == 0)) && (waterLevel <= 1)) && (1 == systemActive))) Ensures: ((((((pumpRunning == 0) && (waterLevel <= 1)) && (1 == systemActive)) && (methaneLevelCritical == 1)) || ((((pumpRunning == 0) && (methaneLevelCritical == 0)) && (waterLevel <= 1)) && (1 == systemActive))) && ((((((head == \old(head)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 792]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Ensures: (((((methaneLevelCritical == 0) || (\old(methaneLevelCritical) != 1)) && ((\old(methaneLevelCritical) != 0) || (methaneLevelCritical == 1))) && (((((((((pumpRunning == 0) && (2 == waterLevel)) && (\old(methaneLevelCritical) == 0)) && (1 == systemActive)) || ((((pumpRunning == 0) && (\old(methaneLevelCritical) == 0)) && (1 == systemActive)) && (waterLevel == 1))) || ((((2 == waterLevel) && (\old(methaneLevelCritical) == 1)) && (1 == systemActive)) && (pumpRunning == 1))) || ((((2 == waterLevel) && (\old(methaneLevelCritical) == 0)) && (1 == systemActive)) && (pumpRunning == 1))) || ((((pumpRunning == 0) && (\old(methaneLevelCritical) == 1)) && (1 == systemActive)) && (waterLevel == 1))) || ((((pumpRunning == 0) && (2 == waterLevel)) && (\old(methaneLevelCritical) == 1)) && (1 == systemActive)))) && (((((head == \old(head)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 896]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((head == \old(head)) && (systemActive == \old(systemActive))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 498]: Procedure Contract for timeShift Derived contract for procedure timeShift. Ensures: ((((((\old(pumpRunning) < 1) || (((pumpRunning == 0) && (\old(waterLevel) == ((long long) waterLevel + 1))) && (1 == systemActive))) && (((((((((\old(waterLevel) == 1) && (methaneLevelCritical == 0)) && (1 == systemActive)) && (\old(pumpRunning) == 0)) || (((\old(pumpRunning) == 1) && (methaneLevelCritical == 1)) && (\old(waterLevel) == 2))) || ((((methaneLevelCritical == 0) && (1 == systemActive)) && (\old(pumpRunning) == 0)) && (\old(waterLevel) == 2))) || (((methaneLevelCritical == 0) && (\old(pumpRunning) == 1)) && (\old(waterLevel) == 2))) || ((((\old(waterLevel) == 1) && (1 == systemActive)) && (\old(pumpRunning) == 0)) && (methaneLevelCritical == 1))) || ((((1 == systemActive) && (\old(pumpRunning) == 0)) && (methaneLevelCritical == 1)) && (\old(waterLevel) == 2)))) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 2)) || ((2 == waterLevel) && (pumpRunning == 1)))) && ((\old(waterLevel) != 1) || ((pumpRunning == 0) && (waterLevel == 1)))) && ((((head == \old(head)) && (systemActive == \old(systemActive))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 530]: Procedure Contract for processEnvironment__wrappee__highWaterSensor Derived contract for procedure processEnvironment__wrappee__highWaterSensor. Requires: ((pumpRunning == 0) && ((((((2 == waterLevel) && (1 == systemActive)) && (methaneLevelCritical == 1)) || (((waterLevel <= 1) && (1 == systemActive)) && (methaneLevelCritical == 1))) || (((methaneLevelCritical == 0) && (waterLevel <= 1)) && (1 == systemActive))) || (((2 == waterLevel) && (methaneLevelCritical == 0)) && (1 == systemActive)))) Ensures: ((((((((((2 == waterLevel) && (1 == systemActive)) && (\old(pumpRunning) == 0)) && (methaneLevelCritical == 1)) || ((((2 == waterLevel) && (methaneLevelCritical == 0)) && (1 == systemActive)) && (\old(pumpRunning) == 0))) || ((((methaneLevelCritical == 0) && (waterLevel <= 1)) && (1 == systemActive)) && (\old(pumpRunning) == 0))) || ((((waterLevel <= 1) && (1 == systemActive)) && (\old(pumpRunning) == 0)) && (methaneLevelCritical == 1))) && ((waterLevel < 2) || (pumpRunning == 1))) && ((pumpRunning == 0) || (1 < waterLevel))) && (((((head == \old(head)) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 780]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: ((((pumpRunning != 0) || (waterLevel == 1)) && ((((((pumpRunning == 0) && (1 == systemActive)) && (methaneLevelCritical == 1)) || (((pumpRunning == 0) && (methaneLevelCritical == 0)) && (1 == systemActive))) || (((methaneLevelCritical == 0) && (1 == systemActive)) && (pumpRunning == 1))) || (((1 == systemActive) && (methaneLevelCritical == 1)) && (pumpRunning == 1)))) && ((2 == waterLevel) || (pumpRunning != 1))) Ensures: (((2 == waterLevel) && (((((((1 == systemActive) && (methaneLevelCritical == 1)) && (\old(waterLevel) == 2)) && (pumpRunning == 1)) || ((((methaneLevelCritical == 0) && (1 == systemActive)) && (\old(waterLevel) == 2)) && (pumpRunning == 1))) || ((((pumpRunning == 0) && (\old(waterLevel) == 1)) && (methaneLevelCritical == 0)) && (1 == systemActive))) || ((((pumpRunning == 0) && (\old(waterLevel) == 1)) && (1 == systemActive)) && (methaneLevelCritical == 1)))) && (((((head == \old(head)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 556]: Procedure Contract for processEnvironment__wrappee__lowWaterSensor Derived contract for procedure processEnvironment__wrappee__lowWaterSensor. Requires: ((pumpRunning == 0) || (0 < waterLevel)) Ensures: ((((((((((((2 == waterLevel) && (1 == systemActive)) && (\old(pumpRunning) == 0)) && (methaneLevelCritical == 1)) || (((((methaneLevelCritical == 0) && ((2 == waterLevel) || (waterLevel == 1))) && (1 == systemActive)) && (\old(pumpRunning) == 1)) && (waterLevel <= 2))) || ((((2 == waterLevel) && (methaneLevelCritical == 0)) && (1 == systemActive)) && (\old(pumpRunning) == 0))) || ((((methaneLevelCritical == 0) && (waterLevel <= 1)) && (1 == systemActive)) && (\old(pumpRunning) == 0))) || ((((waterLevel <= 1) && (1 == systemActive)) && (\old(pumpRunning) == 0)) && (methaneLevelCritical == 1))) && ((pumpRunning == 0) || (\old(pumpRunning) < 1))) && (((\old(pumpRunning) != 0) || (waterLevel < 2)) || (pumpRunning == 1))) && ((pumpRunning == 0) || (1 < waterLevel))) && (((((head == \old(head)) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) RESULT: Ultimate proved your program to be correct! [2024-11-14 03:24:15,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e466e667-e8e6-41df-a25d-8d82acbb7aee/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