./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product48.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32822928-5076-4f1a-bb37-ae6ceaf6e256/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32822928-5076-4f1a-bb37-ae6ceaf6e256/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_32822928-5076-4f1a-bb37-ae6ceaf6e256/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32822928-5076-4f1a-bb37-ae6ceaf6e256/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product48.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32822928-5076-4f1a-bb37-ae6ceaf6e256/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_32822928-5076-4f1a-bb37-ae6ceaf6e256/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 ae2f7a85a5093ad80fd05f69a7d0bbcf9a510999a9154b6f2d8037f035f00930 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:47:42,146 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:47:42,223 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32822928-5076-4f1a-bb37-ae6ceaf6e256/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-13 23:47:42,234 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:47:42,234 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:47:42,276 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:47:42,277 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:47:42,277 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:47:42,278 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:47:42,278 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:47:42,278 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:47:42,278 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:47:42,278 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:47:42,278 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:47:42,278 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:47:42,278 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:47:42,279 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:47:42,280 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:47:42,280 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:47:42,280 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:47:42,281 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:47:42,281 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:47:42,281 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:47:42,281 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 23:47:42,282 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:47:42,282 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:47:42,282 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:47:42,282 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:47:42,282 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 23:47:42,282 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:47:42,282 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 23:47:42,282 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:47:42,282 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:47:42,282 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 23:47:42,282 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:47:42,283 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:47:42,283 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:47:42,283 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:47:42,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:47:42,283 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:47:42,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:47:42,283 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 23:47:42,283 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:47:42,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:47:42,283 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:47:42,283 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:47:42,284 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:47:42,284 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_32822928-5076-4f1a-bb37-ae6ceaf6e256/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 -> ae2f7a85a5093ad80fd05f69a7d0bbcf9a510999a9154b6f2d8037f035f00930 [2024-11-13 23:47:42,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:47:42,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:47:42,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:47:42,626 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:47:42,627 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:47:42,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32822928-5076-4f1a-bb37-ae6ceaf6e256/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/product-lines/minepump_spec1_product48.cil.c Unable to find full path for "g++" [2024-11-13 23:47:44,728 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:47:45,048 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:47:45,048 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32822928-5076-4f1a-bb37-ae6ceaf6e256/sv-benchmarks/c/product-lines/minepump_spec1_product48.cil.c [2024-11-13 23:47:45,061 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32822928-5076-4f1a-bb37-ae6ceaf6e256/bin/utaipan-verify-sOmjnqqW8E/data/f3d8e568d/fd746852addb4b9586b04355da83e2de/FLAG1900c46b3 [2024-11-13 23:47:45,077 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32822928-5076-4f1a-bb37-ae6ceaf6e256/bin/utaipan-verify-sOmjnqqW8E/data/f3d8e568d/fd746852addb4b9586b04355da83e2de [2024-11-13 23:47:45,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:47:45,081 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:47:45,083 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:47:45,083 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:47:45,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:47:45,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:47:45" (1/1) ... [2024-11-13 23:47:45,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78eef1b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:47:45, skipping insertion in model container [2024-11-13 23:47:45,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:47:45" (1/1) ... [2024-11-13 23:47:45,134 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:47:45,416 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_32822928-5076-4f1a-bb37-ae6ceaf6e256/sv-benchmarks/c/product-lines/minepump_spec1_product48.cil.c[17123,17136] [2024-11-13 23:47:45,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:47:45,446 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:47:45,457 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] [2024-11-13 23:47:45,458 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [150] [2024-11-13 23:47:45,458 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [252] [2024-11-13 23:47:45,458 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [618] [2024-11-13 23:47:45,459 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [646] [2024-11-13 23:47:45,459 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [868] [2024-11-13 23:47:45,459 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [877] [2024-11-13 23:47:45,459 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [946] [2024-11-13 23:47:45,555 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_32822928-5076-4f1a-bb37-ae6ceaf6e256/sv-benchmarks/c/product-lines/minepump_spec1_product48.cil.c[17123,17136] [2024-11-13 23:47:45,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:47:45,594 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:47:45,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:47:45 WrapperNode [2024-11-13 23:47:45,595 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:47:45,595 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:47:45,595 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:47:45,596 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:47:45,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:47:45" (1/1) ... [2024-11-13 23:47:45,611 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:47:45" (1/1) ... [2024-11-13 23:47:45,633 INFO L138 Inliner]: procedures = 56, calls = 102, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 190 [2024-11-13 23:47:45,634 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:47:45,634 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:47:45,634 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:47:45,634 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:47:45,644 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:47:45" (1/1) ... [2024-11-13 23:47:45,644 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:47:45" (1/1) ... [2024-11-13 23:47:45,650 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:47:45" (1/1) ... [2024-11-13 23:47:45,651 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:47:45" (1/1) ... [2024-11-13 23:47:45,659 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:47:45" (1/1) ... [2024-11-13 23:47:45,663 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:47:45" (1/1) ... [2024-11-13 23:47:45,667 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:47:45" (1/1) ... [2024-11-13 23:47:45,668 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:47:45" (1/1) ... [2024-11-13 23:47:45,672 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:47:45,673 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:47:45,673 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:47:45,673 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:47:45,674 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:47:45" (1/1) ... [2024-11-13 23:47:45,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:47:45,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32822928-5076-4f1a-bb37-ae6ceaf6e256/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:47:45,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32822928-5076-4f1a-bb37-ae6ceaf6e256/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:47:45,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32822928-5076-4f1a-bb37-ae6ceaf6e256/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:47:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:47:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-13 23:47:45,747 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-13 23:47:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-13 23:47:45,747 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-13 23:47:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-13 23:47:45,748 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-13 23:47:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2024-11-13 23:47:45,748 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2024-11-13 23:47:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-13 23:47:45,749 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-13 23:47:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2024-11-13 23:47:45,750 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2024-11-13 23:47:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2024-11-13 23:47:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2024-11-13 23:47:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2024-11-13 23:47:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2024-11-13 23:47:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 23:47:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-13 23:47:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-13 23:47:45,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:47:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:47:45,856 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:47:45,858 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:47:46,216 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2024-11-13 23:47:46,217 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:47:46,347 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:47:46,347 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 23:47:46,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:47:46 BoogieIcfgContainer [2024-11-13 23:47:46,348 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:47:46,353 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:47:46,353 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:47:46,359 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:47:46,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:47:45" (1/3) ... [2024-11-13 23:47:46,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be417eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:47:46, skipping insertion in model container [2024-11-13 23:47:46,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:47:45" (2/3) ... [2024-11-13 23:47:46,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be417eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:47:46, skipping insertion in model container [2024-11-13 23:47:46,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:47:46" (3/3) ... [2024-11-13 23:47:46,362 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product48.cil.c [2024-11-13 23:47:46,384 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:47:46,388 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG minepump_spec1_product48.cil.c that has 10 procedures, 71 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 23:47:46,453 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:47:46,469 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;@415d8626, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:47:46,470 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 23:47:46,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 53 states have internal predecessors, (62), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-13 23:47:46,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 23:47:46,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:47:46,485 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:47:46,485 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:47:46,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:47:46,492 INFO L85 PathProgramCache]: Analyzing trace with hash -2086499663, now seen corresponding path program 1 times [2024-11-13 23:47:46,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:47:46,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259840154] [2024-11-13 23:47:46,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:47:46,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:47:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:47:46,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:47:46,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:47:46,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259840154] [2024-11-13 23:47:46,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259840154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:47:46,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:47:46,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:47:46,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816726489] [2024-11-13 23:47:46,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:47:46,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 23:47:46,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:47:46,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 23:47:46,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 23:47:46,742 INFO L87 Difference]: Start difference. First operand has 71 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 53 states have internal predecessors, (62), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 23:47:46,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:47:46,831 INFO L93 Difference]: Finished difference Result 140 states and 189 transitions. [2024-11-13 23:47:46,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 23:47:46,834 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-13 23:47:46,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:47:46,844 INFO L225 Difference]: With dead ends: 140 [2024-11-13 23:47:46,845 INFO L226 Difference]: Without dead ends: 66 [2024-11-13 23:47:46,850 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 [2024-11-13 23:47:46,853 INFO L432 NwaCegarLoop]: 73 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, 73 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 [2024-11-13 23:47:46,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:47:46,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-13 23:47:46,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-13 23:47:46,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 49 states have internal predecessors, (54), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-13 23:47:46,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2024-11-13 23:47:46,907 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 85 transitions. Word has length 16 [2024-11-13 23:47:46,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:47:46,909 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 85 transitions. [2024-11-13 23:47:46,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 23:47:46,910 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 85 transitions. [2024-11-13 23:47:46,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 23:47:46,913 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:47:46,913 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:47:46,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 23:47:46,914 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:47:46,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:47:46,915 INFO L85 PathProgramCache]: Analyzing trace with hash 285543387, now seen corresponding path program 1 times [2024-11-13 23:47:46,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:47:46,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424204133] [2024-11-13 23:47:46,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:47:46,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:47:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:47:47,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:47:47,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:47:47,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424204133] [2024-11-13 23:47:47,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424204133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:47:47,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:47:47,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:47:47,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877376138] [2024-11-13 23:47:47,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:47:47,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:47:47,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:47:47,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:47:47,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:47:47,101 INFO L87 Difference]: Start difference. First operand 66 states and 85 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 23:47:47,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:47:47,183 INFO L93 Difference]: Finished difference Result 104 states and 132 transitions. [2024-11-13 23:47:47,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:47:47,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-13 23:47:47,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:47:47,186 INFO L225 Difference]: With dead ends: 104 [2024-11-13 23:47:47,186 INFO L226 Difference]: Without dead ends: 58 [2024-11-13 23:47:47,186 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 [2024-11-13 23:47:47,187 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 14 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:47:47,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 102 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:47:47,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-13 23:47:47,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-13 23:47:47,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 44 states have internal predecessors, (48), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-13 23:47:47,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 74 transitions. [2024-11-13 23:47:47,198 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 74 transitions. Word has length 17 [2024-11-13 23:47:47,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:47:47,199 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 74 transitions. [2024-11-13 23:47:47,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 23:47:47,199 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 74 transitions. [2024-11-13 23:47:47,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 23:47:47,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:47:47,200 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] [2024-11-13 23:47:47,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 23:47:47,201 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:47:47,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:47:47,201 INFO L85 PathProgramCache]: Analyzing trace with hash -82905131, now seen corresponding path program 1 times [2024-11-13 23:47:47,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:47:47,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163437121] [2024-11-13 23:47:47,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:47:47,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:47:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:47:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:47:47,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:47:47,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163437121] [2024-11-13 23:47:47,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163437121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:47:47,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:47:47,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:47:47,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776132364] [2024-11-13 23:47:47,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:47:47,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:47:47,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:47:47,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:47:47,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:47:47,297 INFO L87 Difference]: Start difference. First operand 58 states and 74 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2024-11-13 23:47:47,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:47:47,402 INFO L93 Difference]: Finished difference Result 170 states and 219 transitions. [2024-11-13 23:47:47,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:47:47,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 20 [2024-11-13 23:47:47,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:47:47,404 INFO L225 Difference]: With dead ends: 170 [2024-11-13 23:47:47,405 INFO L226 Difference]: Without dead ends: 114 [2024-11-13 23:47:47,405 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 [2024-11-13 23:47:47,406 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 68 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:47:47,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 125 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:47:47,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-13 23:47:47,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2024-11-13 23:47:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 68 states have (on average 1.338235294117647) internal successors, (91), 83 states have internal predecessors, (91), 26 states have call successors, (26), 16 states have call predecessors, (26), 16 states have return successors, (26), 19 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-13 23:47:47,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 143 transitions. [2024-11-13 23:47:47,436 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 143 transitions. Word has length 20 [2024-11-13 23:47:47,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:47:47,436 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 143 transitions. [2024-11-13 23:47:47,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2024-11-13 23:47:47,436 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 143 transitions. [2024-11-13 23:47:47,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 23:47:47,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:47:47,438 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] [2024-11-13 23:47:47,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 23:47:47,443 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:47:47,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:47:47,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1770126837, now seen corresponding path program 1 times [2024-11-13 23:47:47,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:47:47,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556081467] [2024-11-13 23:47:47,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:47:47,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:47:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:47:47,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:47:47,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:47:47,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556081467] [2024-11-13 23:47:47,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556081467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:47:47,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:47:47,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 23:47:47,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928282553] [2024-11-13 23:47:47,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:47:47,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:47:47,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:47:47,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:47:47,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:47:47,666 INFO L87 Difference]: Start difference. First operand 111 states and 143 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 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) [2024-11-13 23:47:47,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:47:47,846 INFO L93 Difference]: Finished difference Result 298 states and 391 transitions. [2024-11-13 23:47:47,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:47:47,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 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 23 [2024-11-13 23:47:47,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:47:47,850 INFO L225 Difference]: With dead ends: 298 [2024-11-13 23:47:47,851 INFO L226 Difference]: Without dead ends: 189 [2024-11-13 23:47:47,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:47:47,856 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 40 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:47:47,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 157 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:47:47,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-13 23:47:47,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2024-11-13 23:47:47,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 121 states have (on average 1.28099173553719) internal successors, (155), 136 states have internal predecessors, (155), 36 states have call successors, (36), 30 states have call predecessors, (36), 30 states have return successors, (44), 33 states have call predecessors, (44), 36 states have call successors, (44) [2024-11-13 23:47:47,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 235 transitions. [2024-11-13 23:47:47,896 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 235 transitions. Word has length 23 [2024-11-13 23:47:47,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:47:47,896 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 235 transitions. [2024-11-13 23:47:47,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 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) [2024-11-13 23:47:47,896 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 235 transitions. [2024-11-13 23:47:47,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 23:47:47,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:47:47,898 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:47:47,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 23:47:47,898 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:47:47,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:47:47,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2096948917, now seen corresponding path program 1 times [2024-11-13 23:47:47,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:47:47,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462017505] [2024-11-13 23:47:47,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:47:47,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:47:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:47:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:47:48,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:47:48,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462017505] [2024-11-13 23:47:48,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462017505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:47:48,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:47:48,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 23:47:48,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405493676] [2024-11-13 23:47:48,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:47:48,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 23:47:48,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:47:48,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 23:47:48,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:47:48,309 INFO L87 Difference]: Start difference. First operand 188 states and 235 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 23:47:48,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:47:48,602 INFO L93 Difference]: Finished difference Result 540 states and 680 transitions. [2024-11-13 23:47:48,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 23:47:48,603 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2024-11-13 23:47:48,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:47:48,607 INFO L225 Difference]: With dead ends: 540 [2024-11-13 23:47:48,607 INFO L226 Difference]: Without dead ends: 354 [2024-11-13 23:47:48,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:47:48,609 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 108 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 23:47:48,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 235 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 23:47:48,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-13 23:47:48,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 312. [2024-11-13 23:47:48,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 209 states have (on average 1.277511961722488) internal successors, (267), 227 states have internal predecessors, (267), 51 states have call successors, (51), 47 states have call predecessors, (51), 51 states have return successors, (63), 51 states have call predecessors, (63), 51 states have call successors, (63) [2024-11-13 23:47:48,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 381 transitions. [2024-11-13 23:47:48,667 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 381 transitions. Word has length 36 [2024-11-13 23:47:48,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:47:48,667 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 381 transitions. [2024-11-13 23:47:48,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 23:47:48,668 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 381 transitions. [2024-11-13 23:47:48,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 23:47:48,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:47:48,670 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:47:48,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 23:47:48,670 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:47:48,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:47:48,671 INFO L85 PathProgramCache]: Analyzing trace with hash 490911538, now seen corresponding path program 1 times [2024-11-13 23:47:48,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:47:48,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748323648] [2024-11-13 23:47:48,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:47:48,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:47:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:47:48,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 23:47:48,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:47:48,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748323648] [2024-11-13 23:47:48,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748323648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:47:48,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:47:48,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 23:47:48,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775270096] [2024-11-13 23:47:48,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:47:48,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 23:47:48,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:47:48,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 23:47:48,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:47:48,824 INFO L87 Difference]: Start difference. First operand 312 states and 381 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 23:47:49,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:47:49,091 INFO L93 Difference]: Finished difference Result 914 states and 1138 transitions. [2024-11-13 23:47:49,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 23:47:49,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2024-11-13 23:47:49,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:47:49,098 INFO L225 Difference]: With dead ends: 914 [2024-11-13 23:47:49,098 INFO L226 Difference]: Without dead ends: 604 [2024-11-13 23:47:49,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-13 23:47:49,100 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 49 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:47:49,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 257 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:47:49,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-11-13 23:47:49,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 588. [2024-11-13 23:47:49,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 399 states have (on average 1.2606516290726817) internal successors, (503), 426 states have internal predecessors, (503), 94 states have call successors, (94), 86 states have call predecessors, (94), 94 states have return successors, (118), 94 states have call predecessors, (118), 94 states have call successors, (118) [2024-11-13 23:47:49,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 715 transitions. [2024-11-13 23:47:49,206 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 715 transitions. Word has length 39 [2024-11-13 23:47:49,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:47:49,207 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 715 transitions. [2024-11-13 23:47:49,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 23:47:49,207 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 715 transitions. [2024-11-13 23:47:49,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 23:47:49,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:47:49,213 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:47:49,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 23:47:49,213 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:47:49,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:47:49,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1229496136, now seen corresponding path program 1 times [2024-11-13 23:47:49,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:47:49,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133268119] [2024-11-13 23:47:49,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:47:49,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:47:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:47:49,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:47:49,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:47:49,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133268119] [2024-11-13 23:47:49,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133268119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:47:49,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:47:49,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-13 23:47:49,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426587957] [2024-11-13 23:47:49,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:47:49,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 23:47:49,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:47:49,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 23:47:49,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-13 23:47:49,647 INFO L87 Difference]: Start difference. First operand 588 states and 715 transitions. Second operand has 13 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 23:47:50,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:47:50,968 INFO L93 Difference]: Finished difference Result 1165 states and 1535 transitions. [2024-11-13 23:47:50,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 23:47:50,969 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 42 [2024-11-13 23:47:50,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:47:50,976 INFO L225 Difference]: With dead ends: 1165 [2024-11-13 23:47:50,976 INFO L226 Difference]: Without dead ends: 925 [2024-11-13 23:47:50,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 23:47:50,979 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 341 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:47:50,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 278 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 23:47:50,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2024-11-13 23:47:51,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 755. [2024-11-13 23:47:51,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 513 states have (on average 1.263157894736842) internal successors, (648), 547 states have internal predecessors, (648), 122 states have call successors, (122), 104 states have call predecessors, (122), 119 states have return successors, (167), 124 states have call predecessors, (167), 122 states have call successors, (167) [2024-11-13 23:47:51,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 937 transitions. [2024-11-13 23:47:51,123 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 937 transitions. Word has length 42 [2024-11-13 23:47:51,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:47:51,123 INFO L471 AbstractCegarLoop]: Abstraction has 755 states and 937 transitions. [2024-11-13 23:47:51,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 23:47:51,124 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 937 transitions. [2024-11-13 23:47:51,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-13 23:47:51,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:47:51,131 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:47:51,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 23:47:51,132 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:47:51,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:47:51,132 INFO L85 PathProgramCache]: Analyzing trace with hash -363702808, now seen corresponding path program 1 times [2024-11-13 23:47:51,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:47:51,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050282651] [2024-11-13 23:47:51,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:47:51,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:47:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:47:51,213 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:47:51,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:47:51,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050282651] [2024-11-13 23:47:51,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050282651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:47:51,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:47:51,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 23:47:51,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246267278] [2024-11-13 23:47:51,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:47:51,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:47:51,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:47:51,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:47:51,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:47:51,215 INFO L87 Difference]: Start difference. First operand 755 states and 937 transitions. Second operand has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 23:47:51,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:47:51,435 INFO L93 Difference]: Finished difference Result 1224 states and 1517 transitions. [2024-11-13 23:47:51,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:47:51,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 64 [2024-11-13 23:47:51,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:47:51,440 INFO L225 Difference]: With dead ends: 1224 [2024-11-13 23:47:51,440 INFO L226 Difference]: Without dead ends: 471 [2024-11-13 23:47:51,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:47:51,443 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 92 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:47:51,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 126 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:47:51,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2024-11-13 23:47:51,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 463. [2024-11-13 23:47:51,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 320 states have (on average 1.25) internal successors, (400), 341 states have internal predecessors, (400), 72 states have call successors, (72), 63 states have call predecessors, (72), 70 states have return successors, (91), 73 states have call predecessors, (91), 72 states have call successors, (91) [2024-11-13 23:47:51,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 563 transitions. [2024-11-13 23:47:51,522 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 563 transitions. Word has length 64 [2024-11-13 23:47:51,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:47:51,523 INFO L471 AbstractCegarLoop]: Abstraction has 463 states and 563 transitions. [2024-11-13 23:47:51,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 23:47:51,523 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 563 transitions. [2024-11-13 23:47:51,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-13 23:47:51,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:47:51,526 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:47:51,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 23:47:51,526 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:47:51,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:47:51,527 INFO L85 PathProgramCache]: Analyzing trace with hash 777054500, now seen corresponding path program 1 times [2024-11-13 23:47:51,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:47:51,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174730949] [2024-11-13 23:47:51,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:47:51,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:47:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:47:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-13 23:47:51,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:47:51,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174730949] [2024-11-13 23:47:51,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174730949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:47:51,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:47:51,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 23:47:51,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477067704] [2024-11-13 23:47:51,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:47:51,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 23:47:51,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:47:51,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 23:47:51,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-13 23:47:51,751 INFO L87 Difference]: Start difference. First operand 463 states and 563 transitions. Second operand has 10 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-13 23:47:52,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:47:52,211 INFO L93 Difference]: Finished difference Result 948 states and 1184 transitions. [2024-11-13 23:47:52,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 23:47:52,212 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) Word has length 79 [2024-11-13 23:47:52,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:47:52,214 INFO L225 Difference]: With dead ends: 948 [2024-11-13 23:47:52,214 INFO L226 Difference]: Without dead ends: 0 [2024-11-13 23:47:52,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-13 23:47:52,219 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 57 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:47:52,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 339 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:47:52,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-13 23:47:52,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-13 23:47:52,221 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) [2024-11-13 23:47:52,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-13 23:47:52,222 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2024-11-13 23:47:52,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:47:52,223 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 23:47:52,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-13 23:47:52,223 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-13 23:47:52,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-13 23:47:52,226 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 23:47:52,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 23:47:52,230 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:47:52,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-13 23:47:56,735 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 23:47:56,763 WARN L162 FloydHoareUtils]: Requires clause for deactivatePump contained old-variable. Original clause: (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or (= 1 ~systemActive~0) (and (not (= ~waterLevel~0 1)) (not (= 0 ~systemActive~0))))) Eliminated clause: (or (= 1 ~systemActive~0) (and (not (= ~waterLevel~0 1)) (not (= 0 ~systemActive~0)))) [2024-11-13 23:47:56,779 WARN L162 FloydHoareUtils]: Requires clause for changeMethaneLevel contained old-variable. Original clause: (and (or (not (= |old(~methaneLevelCritical~0)| 0)) (= ~methaneLevelCritical~0 0)) (or (= 1 ~systemActive~0) (and (= ~pumpRunning~0 0) (= 0 ~systemActive~0)))) Eliminated clause: (or (= 1 ~systemActive~0) (and (= ~pumpRunning~0 0) (= 0 ~systemActive~0))) [2024-11-13 23:47:56,785 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse0 (= 0 ~systemActive~0))) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or (= ~pumpRunning~0 0) (not .cse0)) (or (= 1 ~systemActive~0) .cse0) (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) (= ~waterLevel~0 1)))) Eliminated clause: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (= ~pumpRunning~0 0) (not .cse0)) (or (= 1 ~systemActive~0) .cse0))) [2024-11-13 23:47:56,803 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__methaneQuery contained old-variable. Original clause: (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 1 ~systemActive~0) (or (= ~methaneLevelCritical~0 0) (= |old(~pumpRunning~0)| 0))) Eliminated clause: (and (= 1 ~systemActive~0) (or (= ~pumpRunning~0 0) (= ~methaneLevelCritical~0 0))) [2024-11-13 23:47:56,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 11:47:56 BoogieIcfgContainer [2024-11-13 23:47:56,809 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 23:47:56,809 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 23:47:56,810 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 23:47:56,810 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 23:47:56,811 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:47:46" (3/4) ... [2024-11-13 23:47:56,813 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 23:47:56,818 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2024-11-13 23:47:56,818 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-13 23:47:56,818 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-13 23:47:56,818 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-13 23:47:56,819 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-13 23:47:56,819 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2024-11-13 23:47:56,819 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-13 23:47:56,819 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2024-11-13 23:47:56,819 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2024-11-13 23:47:56,825 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2024-11-13 23:47:56,826 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-13 23:47:56,826 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-13 23:47:56,827 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 23:47:56,827 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 23:47:56,856 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((pumpRunning == \old(pumpRunning)) && ((pumpRunning == 0) || (0 != systemActive))) && ((1 == systemActive) || (0 == systemActive))) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) [2024-11-13 23:47:56,887 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((pumpRunning == \old(pumpRunning)) && ((pumpRunning == 0) || (0 != systemActive))) && ((1 == systemActive) || (0 == systemActive))) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) [2024-11-13 23:47:56,934 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32822928-5076-4f1a-bb37-ae6ceaf6e256/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-13 23:47:56,934 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32822928-5076-4f1a-bb37-ae6ceaf6e256/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-13 23:47:56,935 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 23:47:56,936 INFO L158 Benchmark]: Toolchain (without parser) took 11854.58ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 93.1MB in the beginning and 132.4MB in the end (delta: -39.3MB). Peak memory consumption was 191.5MB. Max. memory is 16.1GB. [2024-11-13 23:47:56,936 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 167.8MB. Free memory is still 103.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 23:47:56,936 INFO L158 Benchmark]: CACSL2BoogieTranslator took 512.42ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 74.2MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 23:47:56,937 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.28ms. Allocated memory is still 117.4MB. Free memory was 74.2MB in the beginning and 72.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 23:47:56,937 INFO L158 Benchmark]: Boogie Preprocessor took 38.50ms. Allocated memory is still 117.4MB. Free memory was 72.5MB in the beginning and 71.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 23:47:56,937 INFO L158 Benchmark]: RCFGBuilder took 674.75ms. Allocated memory is still 117.4MB. Free memory was 71.2MB in the beginning and 45.7MB in the end (delta: 25.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-13 23:47:56,938 INFO L158 Benchmark]: TraceAbstraction took 10455.94ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 45.3MB in the beginning and 139.7MB in the end (delta: -94.4MB). Peak memory consumption was 158.4MB. Max. memory is 16.1GB. [2024-11-13 23:47:56,938 INFO L158 Benchmark]: Witness Printer took 125.23ms. Allocated memory is still 352.3MB. Free memory was 139.7MB in the beginning and 132.4MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 23:47:56,940 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 167.8MB. Free memory is still 103.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 512.42ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 74.2MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.28ms. Allocated memory is still 117.4MB. Free memory was 74.2MB in the beginning and 72.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.50ms. Allocated memory is still 117.4MB. Free memory was 72.5MB in the beginning and 71.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 674.75ms. Allocated memory is still 117.4MB. Free memory was 71.2MB in the beginning and 45.7MB in the end (delta: 25.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 10455.94ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 45.3MB in the beginning and 139.7MB in the end (delta: -94.4MB). Peak memory consumption was 158.4MB. Max. memory is 16.1GB. * Witness Printer took 125.23ms. Allocated memory is still 352.3MB. Free memory was 139.7MB in the beginning and 132.4MB in the end (delta: 7.3MB). 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,"Environment.i","") [49] - GenericResultAtLocation [Line: 150]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [150] - GenericResultAtLocation [Line: 252]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [252] - GenericResultAtLocation [Line: 618]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [618] - GenericResultAtLocation [Line: 646]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [646] - GenericResultAtLocation [Line: 868]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [868] - GenericResultAtLocation [Line: 877]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [877] - GenericResultAtLocation [Line: 946]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [946] * 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: 873]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.8s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 785 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 769 mSDsluCounter, 1692 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1126 mSDsCounter, 270 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1160 IncrementalHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 270 mSolverCounterUnsat, 566 mSDtfsCounter, 1160 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=755occurred in iteration=7, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 240 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 336 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 327 ConstructedInterpolants, 0 QuantifiedInterpolants, 649 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 63/63 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: 163]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 888]: Loop Invariant Derived loop invariant: (((((pumpRunning == 0) && (1 == systemActive)) && (splverifierCounter == 0)) || (((pumpRunning == 0) && (splverifierCounter == 0)) && (0 == systemActive))) || (((methaneLevelCritical == 0) && (1 == systemActive)) && (splverifierCounter == 0))) - InvariantResult [Line: 887]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 654]: Location Invariant Derived location invariant: ((((pumpRunning == \old(pumpRunning)) && ((pumpRunning == 0) || (0 != systemActive))) && ((1 == systemActive) || (0 == systemActive))) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) - ProcedureContractResult [Line: 762]: Procedure Contract for deactivatePump Derived contract for procedure deactivatePump. Requires: ((1 == systemActive) || ((waterLevel != 1) && (0 != systemActive))) Ensures: (((pumpRunning == 0) && ((1 == systemActive) || ((waterLevel != 1) && (0 != systemActive)))) && (((((waterLevel == \old(waterLevel)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 678]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: (((methaneLevelCritical == 0) && (1 == systemActive)) || ((pumpRunning == 0) && (1 == systemActive))) Ensures: ((((methaneLevelCritical == 0) && (1 == systemActive)) || ((pumpRunning == 0) && (1 == systemActive))) && ((((((waterLevel == \old(waterLevel)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 83]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Requires: ((1 == systemActive) || ((pumpRunning == 0) && (0 == systemActive))) Ensures: (((1 == systemActive) || ((pumpRunning == 0) && (0 == systemActive))) && (((((waterLevel == \old(waterLevel)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 654]: Procedure Contract for timeShift Derived contract for procedure timeShift. Requires: (((pumpRunning == 0) || (0 != systemActive)) && ((1 == systemActive) || (0 == systemActive))) Ensures: ((((((1 == systemActive) || ((\old(pumpRunning) == 0) && (0 == systemActive))) && (((pumpRunning == 0) || ((pumpRunning == \old(pumpRunning)) && (methaneLevelCritical == 0))) || (((waterLevel != 1) && (methaneLevelCritical == 0)) && (1 == systemActive)))) && (((pumpRunning == \old(pumpRunning)) || (methaneLevelCritical != 0)) || ((waterLevel != 1) && (1 == systemActive)))) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) && ((((methaneLevelCritical == \old(methaneLevelCritical)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 153]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((methaneLevelCritical == \old(methaneLevelCritical)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 95]: Procedure Contract for isMethaneLevelCritical Derived contract for procedure isMethaneLevelCritical. Requires: ((1 == systemActive) || ((pumpRunning == 0) && (0 == systemActive))) Ensures: (((\result == methaneLevelCritical) && ((1 == systemActive) || ((pumpRunning == 0) && (0 == systemActive)))) && ((((((waterLevel == \old(waterLevel)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 71]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: (((1 == systemActive) && ((pumpRunning == 0) || (methaneLevelCritical == 0))) || ((pumpRunning == 0) && (0 == systemActive))) Ensures: ((((1 == systemActive) && ((pumpRunning == 0) || (methaneLevelCritical == 0))) || ((pumpRunning == 0) && (0 == systemActive))) && (((((methaneLevelCritical == \old(methaneLevelCritical)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 686]: Procedure Contract for processEnvironment__wrappee__methaneQuery Derived contract for procedure processEnvironment__wrappee__methaneQuery. Requires: ((1 == systemActive) && ((pumpRunning == 0) || (methaneLevelCritical == 0))) Ensures: ((((pumpRunning == \old(pumpRunning)) || ((waterLevel != 1) && (methaneLevelCritical == 0))) && (((1 == systemActive) && (\old(pumpRunning) == 0)) || ((methaneLevelCritical == 0) && (1 == systemActive)))) && (((((waterLevel == \old(waterLevel)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 770]: Procedure Contract for isMethaneAlarm Derived contract for procedure isMethaneAlarm. Requires: (1 == systemActive) Ensures: (((1 == systemActive) && (\result == methaneLevelCritical)) && ((((((waterLevel == \old(waterLevel)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) RESULT: Ultimate proved your program to be correct! [2024-11-13 23:47:56,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32822928-5076-4f1a-bb37-ae6ceaf6e256/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