./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.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_57af9c7e-e92f-46d9-8887-0e07f9e20760/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57af9c7e-e92f-46d9-8887-0e07f9e20760/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_57af9c7e-e92f-46d9-8887-0e07f9e20760/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57af9c7e-e92f-46d9-8887-0e07f9e20760/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57af9c7e-e92f-46d9-8887-0e07f9e20760/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_57af9c7e-e92f-46d9-8887-0e07f9e20760/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 740290dda5575272bb23cb8f59f476bbd4d0eb4eae1c4b42019e214336dbab38 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:49:52,448 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:49:52,529 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57af9c7e-e92f-46d9-8887-0e07f9e20760/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-13 23:49:52,543 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:49:52,544 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:49:52,593 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:49:52,596 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:49:52,597 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:49:52,598 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:49:52,598 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:49:52,598 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:49:52,599 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:49:52,599 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:49:52,599 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:49:52,601 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:49:52,602 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:49:52,602 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:49:52,602 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:49:52,602 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:49:52,602 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:49:52,603 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:49:52,603 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:49:52,603 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:49:52,603 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 23:49:52,603 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:49:52,603 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:49:52,604 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:49:52,604 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:49:52,604 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 23:49:52,604 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:49:52,604 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 23:49:52,604 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:49:52,604 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:49:52,604 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 23:49:52,604 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:49:52,605 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:49:52,605 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:49:52,605 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:49:52,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:49:52,605 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:49:52,605 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:49:52,605 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 23:49:52,605 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:49:52,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:49:52,607 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:49:52,607 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:49:52,608 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:49:52,608 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_57af9c7e-e92f-46d9-8887-0e07f9e20760/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 -> 740290dda5575272bb23cb8f59f476bbd4d0eb4eae1c4b42019e214336dbab38 [2024-11-13 23:49:52,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:49:52,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:49:52,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:49:52,999 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:49:53,000 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:49:53,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57af9c7e-e92f-46d9-8887-0e07f9e20760/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c Unable to find full path for "g++" [2024-11-13 23:49:55,400 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:49:55,922 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:49:55,922 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57af9c7e-e92f-46d9-8887-0e07f9e20760/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2024-11-13 23:49:55,945 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57af9c7e-e92f-46d9-8887-0e07f9e20760/bin/utaipan-verify-sOmjnqqW8E/data/b9217eb16/b427f6485a294724bf2b7c597933e90b/FLAG134bdaad9 [2024-11-13 23:49:55,970 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57af9c7e-e92f-46d9-8887-0e07f9e20760/bin/utaipan-verify-sOmjnqqW8E/data/b9217eb16/b427f6485a294724bf2b7c597933e90b [2024-11-13 23:49:55,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:49:55,978 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:49:55,980 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:49:55,980 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:49:55,990 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:49:55,992 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:49:55" (1/1) ... [2024-11-13 23:49:55,996 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@459bcff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:55, skipping insertion in model container [2024-11-13 23:49:55,996 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:49:55" (1/1) ... [2024-11-13 23:49:56,053 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:49:56,409 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_57af9c7e-e92f-46d9-8887-0e07f9e20760/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6322,6335] [2024-11-13 23:49:56,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:49:56,523 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:49:56,616 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_57af9c7e-e92f-46d9-8887-0e07f9e20760/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6322,6335] [2024-11-13 23:49:56,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:49:56,685 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:49:56,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:56 WrapperNode [2024-11-13 23:49:56,685 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:49:56,686 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:49:56,687 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:49:56,687 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:49:56,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:56" (1/1) ... [2024-11-13 23:49:56,707 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:56" (1/1) ... [2024-11-13 23:49:56,750 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 578 [2024-11-13 23:49:56,751 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:49:56,751 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:49:56,751 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:49:56,752 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:49:56,761 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:56" (1/1) ... [2024-11-13 23:49:56,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:56" (1/1) ... [2024-11-13 23:49:56,766 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:56" (1/1) ... [2024-11-13 23:49:56,766 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:56" (1/1) ... [2024-11-13 23:49:56,777 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:56" (1/1) ... [2024-11-13 23:49:56,791 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:56" (1/1) ... [2024-11-13 23:49:56,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:56" (1/1) ... [2024-11-13 23:49:56,800 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:56" (1/1) ... [2024-11-13 23:49:56,813 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:49:56,814 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:49:56,814 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:49:56,814 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:49:56,815 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:56" (1/1) ... [2024-11-13 23:49:56,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:49:56,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57af9c7e-e92f-46d9-8887-0e07f9e20760/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:49:56,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57af9c7e-e92f-46d9-8887-0e07f9e20760/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:49:56,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57af9c7e-e92f-46d9-8887-0e07f9e20760/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:49:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:49:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 23:49:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:49:56,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:49:57,089 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:49:57,091 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:49:57,995 INFO L? ?]: Removed 52 outVars from TransFormulas that were not future-live. [2024-11-13 23:49:57,995 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:49:58,313 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:49:58,316 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 23:49:58,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:49:58 BoogieIcfgContainer [2024-11-13 23:49:58,317 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:49:58,321 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:49:58,322 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:49:58,330 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:49:58,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:49:55" (1/3) ... [2024-11-13 23:49:58,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3b669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:49:58, skipping insertion in model container [2024-11-13 23:49:58,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:49:56" (2/3) ... [2024-11-13 23:49:58,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3b669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:49:58, skipping insertion in model container [2024-11-13 23:49:58,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:49:58" (3/3) ... [2024-11-13 23:49:58,335 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2024-11-13 23:49:58,356 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:49:58,361 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c that has 1 procedures, 105 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-13 23:49:58,450 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:49:58,469 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;@6ec6c695, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:49:58,469 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 23:49:58,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 103 states have (on average 1.6893203883495145) internal successors, (174), 104 states have internal predecessors, (174), 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 23:49:58,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 23:49:58,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:49:58,484 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:49:58,485 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:49:58,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:49:58,491 INFO L85 PathProgramCache]: Analyzing trace with hash 823361776, now seen corresponding path program 1 times [2024-11-13 23:49:58,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:49:58,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588241677] [2024-11-13 23:49:58,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:49:58,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:49:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:49:59,227 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 23:49:59,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:49:59,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588241677] [2024-11-13 23:49:59,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588241677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:49:59,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:49:59,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:49:59,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700451900] [2024-11-13 23:49:59,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:49:59,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:49:59,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:49:59,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:49:59,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:49:59,278 INFO L87 Difference]: Start difference. First operand has 105 states, 103 states have (on average 1.6893203883495145) internal successors, (174), 104 states have internal predecessors, (174), 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) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 23:49:59,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:49:59,420 INFO L93 Difference]: Finished difference Result 236 states and 371 transitions. [2024-11-13 23:49:59,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:49:59,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) Word has length 47 [2024-11-13 23:49:59,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:49:59,436 INFO L225 Difference]: With dead ends: 236 [2024-11-13 23:49:59,436 INFO L226 Difference]: Without dead ends: 161 [2024-11-13 23:49:59,443 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 23:49:59,449 INFO L432 NwaCegarLoop]: 243 mSDtfsCounter, 130 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:49:59,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 334 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:49:59,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-13 23:49:59,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 159. [2024-11-13 23:49:59,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.4113924050632911) internal successors, (223), 158 states have internal predecessors, (223), 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 23:49:59,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 223 transitions. [2024-11-13 23:49:59,526 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 223 transitions. Word has length 47 [2024-11-13 23:49:59,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:49:59,526 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 223 transitions. [2024-11-13 23:49:59,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 23:49:59,527 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 223 transitions. [2024-11-13 23:49:59,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 23:49:59,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:49:59,531 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:49:59,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 23:49:59,532 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:49:59,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:49:59,532 INFO L85 PathProgramCache]: Analyzing trace with hash -32845527, now seen corresponding path program 1 times [2024-11-13 23:49:59,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:49:59,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213677981] [2024-11-13 23:49:59,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:49:59,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:49:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:49:59,882 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 23:49:59,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:49:59,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213677981] [2024-11-13 23:49:59,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213677981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:49:59,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:49:59,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:49:59,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133949084] [2024-11-13 23:49:59,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:49:59,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:49:59,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:49:59,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:49:59,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:49:59,886 INFO L87 Difference]: Start difference. First operand 159 states and 223 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 23:50:00,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:50:00,009 INFO L93 Difference]: Finished difference Result 387 states and 567 transitions. [2024-11-13 23:50:00,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:50:00,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) Word has length 50 [2024-11-13 23:50:00,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:50:00,013 INFO L225 Difference]: With dead ends: 387 [2024-11-13 23:50:00,017 INFO L226 Difference]: Without dead ends: 262 [2024-11-13 23:50:00,018 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 23:50:00,019 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 96 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:50:00,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 279 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:50:00,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-13 23:50:00,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2024-11-13 23:50:00,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.4478764478764479) internal successors, (375), 259 states have internal predecessors, (375), 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 23:50:00,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 375 transitions. [2024-11-13 23:50:00,067 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 375 transitions. Word has length 50 [2024-11-13 23:50:00,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:50:00,067 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 375 transitions. [2024-11-13 23:50:00,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 23:50:00,068 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 375 transitions. [2024-11-13 23:50:00,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 23:50:00,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:50:00,070 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:50:00,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 23:50:00,072 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:50:00,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:50:00,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1031251432, now seen corresponding path program 1 times [2024-11-13 23:50:00,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:50:00,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728101632] [2024-11-13 23:50:00,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:00,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:50:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:00,350 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 23:50:00,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:50:00,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728101632] [2024-11-13 23:50:00,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728101632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:50:00,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:50:00,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:50:00,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551622534] [2024-11-13 23:50:00,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:50:00,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:50:00,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:50:00,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:50:00,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:50:00,353 INFO L87 Difference]: Start difference. First operand 260 states and 375 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 23:50:00,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:50:00,461 INFO L93 Difference]: Finished difference Result 668 states and 989 transitions. [2024-11-13 23:50:00,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:50:00,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) Word has length 53 [2024-11-13 23:50:00,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:50:00,470 INFO L225 Difference]: With dead ends: 668 [2024-11-13 23:50:00,470 INFO L226 Difference]: Without dead ends: 442 [2024-11-13 23:50:00,471 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 23:50:00,474 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 91 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:50:00,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 264 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:50:00,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2024-11-13 23:50:00,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 440. [2024-11-13 23:50:00,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 1.4646924829157175) internal successors, (643), 439 states have internal predecessors, (643), 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 23:50:00,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 643 transitions. [2024-11-13 23:50:00,525 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 643 transitions. Word has length 53 [2024-11-13 23:50:00,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:50:00,525 INFO L471 AbstractCegarLoop]: Abstraction has 440 states and 643 transitions. [2024-11-13 23:50:00,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 23:50:00,526 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 643 transitions. [2024-11-13 23:50:00,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-13 23:50:00,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:50:00,528 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:50:00,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 23:50:00,528 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:50:00,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:50:00,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1293697318, now seen corresponding path program 1 times [2024-11-13 23:50:00,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:50:00,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630484664] [2024-11-13 23:50:00,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:00,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:50:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:00,811 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 23:50:00,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:50:00,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630484664] [2024-11-13 23:50:00,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630484664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:50:00,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:50:00,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:50:00,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137297565] [2024-11-13 23:50:00,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:50:00,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:50:00,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:50:00,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:50:00,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:50:00,818 INFO L87 Difference]: Start difference. First operand 440 states and 643 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 23:50:00,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:50:00,921 INFO L93 Difference]: Finished difference Result 1164 states and 1725 transitions. [2024-11-13 23:50:00,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:50:00,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) Word has length 56 [2024-11-13 23:50:00,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:50:00,929 INFO L225 Difference]: With dead ends: 1164 [2024-11-13 23:50:00,932 INFO L226 Difference]: Without dead ends: 758 [2024-11-13 23:50:00,934 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 23:50:00,935 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 86 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:50:00,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 249 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:50:00,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2024-11-13 23:50:00,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 756. [2024-11-13 23:50:00,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 755 states have (on average 1.466225165562914) internal successors, (1107), 755 states have internal predecessors, (1107), 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 23:50:01,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1107 transitions. [2024-11-13 23:50:01,003 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1107 transitions. Word has length 56 [2024-11-13 23:50:01,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:50:01,004 INFO L471 AbstractCegarLoop]: Abstraction has 756 states and 1107 transitions. [2024-11-13 23:50:01,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 23:50:01,005 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1107 transitions. [2024-11-13 23:50:01,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 23:50:01,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:50:01,006 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:50:01,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 23:50:01,007 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:50:01,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:50:01,008 INFO L85 PathProgramCache]: Analyzing trace with hash 386449733, now seen corresponding path program 1 times [2024-11-13 23:50:01,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:50:01,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119324223] [2024-11-13 23:50:01,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:01,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:50:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:01,237 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 23:50:01,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:50:01,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119324223] [2024-11-13 23:50:01,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119324223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:50:01,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:50:01,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:50:01,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401637841] [2024-11-13 23:50:01,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:50:01,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:50:01,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:50:01,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:50:01,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:50:01,245 INFO L87 Difference]: Start difference. First operand 756 states and 1107 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 23:50:01,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:50:01,345 INFO L93 Difference]: Finished difference Result 2024 states and 2981 transitions. [2024-11-13 23:50:01,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:50:01,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) Word has length 59 [2024-11-13 23:50:01,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:50:01,353 INFO L225 Difference]: With dead ends: 2024 [2024-11-13 23:50:01,353 INFO L226 Difference]: Without dead ends: 1302 [2024-11-13 23:50:01,355 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 23:50:01,356 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 81 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:50:01,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 234 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:50:01,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2024-11-13 23:50:01,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1300. [2024-11-13 23:50:01,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1299 states have (on average 1.4557351809083912) internal successors, (1891), 1299 states have internal predecessors, (1891), 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 23:50:01,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1891 transitions. [2024-11-13 23:50:01,445 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1891 transitions. Word has length 59 [2024-11-13 23:50:01,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:50:01,446 INFO L471 AbstractCegarLoop]: Abstraction has 1300 states and 1891 transitions. [2024-11-13 23:50:01,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 23:50:01,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1891 transitions. [2024-11-13 23:50:01,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 23:50:01,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:50:01,449 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:50:01,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 23:50:01,450 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:50:01,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:50:01,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1546034783, now seen corresponding path program 1 times [2024-11-13 23:50:01,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:50:01,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754177466] [2024-11-13 23:50:01,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:01,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:50:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:01,938 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 23:50:01,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:50:01,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754177466] [2024-11-13 23:50:01,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754177466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:50:01,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:50:01,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 23:50:01,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399614686] [2024-11-13 23:50:01,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:50:01,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 23:50:01,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:50:01,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 23:50:01,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:50:01,941 INFO L87 Difference]: Start difference. First operand 1300 states and 1891 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 23:50:02,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:50:02,265 INFO L93 Difference]: Finished difference Result 6590 states and 9576 transitions. [2024-11-13 23:50:02,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 23:50:02,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) Word has length 62 [2024-11-13 23:50:02,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:50:02,295 INFO L225 Difference]: With dead ends: 6590 [2024-11-13 23:50:02,296 INFO L226 Difference]: Without dead ends: 5324 [2024-11-13 23:50:02,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:50:02,305 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 426 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 23:50:02,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 773 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 23:50:02,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5324 states. [2024-11-13 23:50:02,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5324 to 5316. [2024-11-13 23:50:02,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 5315 states have (on average 1.4485418626528692) internal successors, (7699), 5315 states have internal predecessors, (7699), 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 23:50:02,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 7699 transitions. [2024-11-13 23:50:02,586 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 7699 transitions. Word has length 62 [2024-11-13 23:50:02,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:50:02,587 INFO L471 AbstractCegarLoop]: Abstraction has 5316 states and 7699 transitions. [2024-11-13 23:50:02,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 23:50:02,588 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 7699 transitions. [2024-11-13 23:50:02,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-13 23:50:02,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:50:02,591 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:50:02,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 23:50:02,591 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:50:02,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:50:02,592 INFO L85 PathProgramCache]: Analyzing trace with hash 2053885880, now seen corresponding path program 1 times [2024-11-13 23:50:02,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:50:02,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388147717] [2024-11-13 23:50:02,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:02,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:50:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:02,789 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 23:50:02,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:50:02,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388147717] [2024-11-13 23:50:02,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388147717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:50:02,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:50:02,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 23:50:02,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877947890] [2024-11-13 23:50:02,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:50:02,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 23:50:02,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:50:02,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 23:50:02,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:50:02,792 INFO L87 Difference]: Start difference. First operand 5316 states and 7699 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 23:50:03,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:50:03,183 INFO L93 Difference]: Finished difference Result 13642 states and 19855 transitions. [2024-11-13 23:50:03,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:50:03,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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) Word has length 64 [2024-11-13 23:50:03,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:50:03,219 INFO L225 Difference]: With dead ends: 13642 [2024-11-13 23:50:03,219 INFO L226 Difference]: Without dead ends: 8360 [2024-11-13 23:50:03,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:50:03,227 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 562 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 23:50:03,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 135 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 23:50:03,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8360 states. [2024-11-13 23:50:03,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8360 to 8358. [2024-11-13 23:50:03,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8358 states, 8357 states have (on average 1.441306689003231) internal successors, (12045), 8357 states have internal predecessors, (12045), 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 23:50:03,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8358 states to 8358 states and 12045 transitions. [2024-11-13 23:50:03,519 INFO L78 Accepts]: Start accepts. Automaton has 8358 states and 12045 transitions. Word has length 64 [2024-11-13 23:50:03,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:50:03,520 INFO L471 AbstractCegarLoop]: Abstraction has 8358 states and 12045 transitions. [2024-11-13 23:50:03,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 23:50:03,520 INFO L276 IsEmpty]: Start isEmpty. Operand 8358 states and 12045 transitions. [2024-11-13 23:50:03,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-13 23:50:03,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:50:03,522 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:50:03,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 23:50:03,522 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:50:03,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:50:03,522 INFO L85 PathProgramCache]: Analyzing trace with hash -2105320205, now seen corresponding path program 1 times [2024-11-13 23:50:03,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:50:03,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715980263] [2024-11-13 23:50:03,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:03,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:50:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:04,447 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 23:50:04,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:50:04,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715980263] [2024-11-13 23:50:04,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715980263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:50:04,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:50:04,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 23:50:04,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192786417] [2024-11-13 23:50:04,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:50:04,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 23:50:04,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:50:04,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 23:50:04,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-13 23:50:04,449 INFO L87 Difference]: Start difference. First operand 8358 states and 12045 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 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 23:50:04,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:50:04,936 INFO L93 Difference]: Finished difference Result 14430 states and 20834 transitions. [2024-11-13 23:50:04,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 23:50:04,937 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 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) Word has length 64 [2024-11-13 23:50:04,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:50:05,000 INFO L225 Difference]: With dead ends: 14430 [2024-11-13 23:50:05,000 INFO L226 Difference]: Without dead ends: 14428 [2024-11-13 23:50:05,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2024-11-13 23:50:05,006 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 1104 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 23:50:05,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 1470 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 23:50:05,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14428 states. [2024-11-13 23:50:05,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14428 to 8746. [2024-11-13 23:50:05,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8746 states, 8745 states have (on average 1.441852487135506) internal successors, (12609), 8745 states have internal predecessors, (12609), 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 23:50:05,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8746 states to 8746 states and 12609 transitions. [2024-11-13 23:50:05,299 INFO L78 Accepts]: Start accepts. Automaton has 8746 states and 12609 transitions. Word has length 64 [2024-11-13 23:50:05,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:50:05,301 INFO L471 AbstractCegarLoop]: Abstraction has 8746 states and 12609 transitions. [2024-11-13 23:50:05,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 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 23:50:05,301 INFO L276 IsEmpty]: Start isEmpty. Operand 8746 states and 12609 transitions. [2024-11-13 23:50:05,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 23:50:05,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:50:05,303 INFO L215 NwaCegarLoop]: trace histogram [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, 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 23:50:05,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 23:50:05,304 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:50:05,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:50:05,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1777528301, now seen corresponding path program 1 times [2024-11-13 23:50:05,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:50:05,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443941763] [2024-11-13 23:50:05,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:05,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:50:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:08,344 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:08,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:50:08,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443941763] [2024-11-13 23:50:08,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443941763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:50:08,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770787169] [2024-11-13 23:50:08,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:50:08,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:50:08,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57af9c7e-e92f-46d9-8887-0e07f9e20760/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:50:08,348 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57af9c7e-e92f-46d9-8887-0e07f9e20760/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:50:08,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57af9c7e-e92f-46d9-8887-0e07f9e20760/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 23:50:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:50:08,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-13 23:50:08,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:50:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:13,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:50:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:50:48,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770787169] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:50:48,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1425566949] [2024-11-13 23:50:48,278 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2024-11-13 23:50:48,279 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:50:48,284 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:50:48,290 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:50:48,290 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:51:43,917 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:52:19,108 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '65146#(and (<= 0 ~mode4~0) (<= ~__return_59613~0 1) (<= ~mode5~0 1) (<= ~mode3~0 1) (exists ((|v_ULTIMATE.start_main_~assert__arg~0#1_50| Int)) (= 0 |v_ULTIMATE.start_main_~assert__arg~0#1_50|)) (<= ~mode4~0 1) (<= 0 ~__return_59613~0) (<= 0 ~mode5~0))' at error location [2024-11-13 23:52:19,108 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:52:19,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:52:19,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 21] total 57 [2024-11-13 23:52:19,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388461790] [2024-11-13 23:52:19,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:52:19,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-13 23:52:19,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:52:19,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-13 23:52:19,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1619, Invalid=11037, Unknown=0, NotChecked=0, Total=12656 [2024-11-13 23:52:19,115 INFO L87 Difference]: Start difference. First operand 8746 states and 12609 transitions. Second operand has 57 states, 57 states have (on average 3.9473684210526314) internal successors, (225), 57 states have internal predecessors, (225), 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 23:58:04,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:58:04,739 INFO L93 Difference]: Finished difference Result 120784 states and 174237 transitions. [2024-11-13 23:58:04,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 449 states. [2024-11-13 23:58:04,740 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.9473684210526314) internal successors, (225), 57 states have internal predecessors, (225), 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) Word has length 76 [2024-11-13 23:58:04,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:58:05,069 INFO L225 Difference]: With dead ends: 120784 [2024-11-13 23:58:05,069 INFO L226 Difference]: Without dead ends: 112100 [2024-11-13 23:58:05,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 552 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144096 ImplicationChecksByTransitivity, 347.2s TimeCoverageRelationStatistics Valid=45111, Invalid=261251, Unknown=0, NotChecked=0, Total=306362 [2024-11-13 23:58:05,147 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 30885 mSDsluCounter, 9163 mSDsCounter, 0 mSdLazyCounter, 11738 mSolverCounterSat, 1370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30885 SdHoareTripleChecker+Valid, 9360 SdHoareTripleChecker+Invalid, 13108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1370 IncrementalHoareTripleChecker+Valid, 11738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time [2024-11-13 23:58:05,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30885 Valid, 9360 Invalid, 13108 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1370 Valid, 11738 Invalid, 0 Unknown, 0 Unchecked, 29.6s Time] [2024-11-13 23:58:05,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112100 states. [2024-11-13 23:58:06,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112100 to 61026. [2024-11-13 23:58:06,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61026 states, 61025 states have (on average 1.405096272019664) internal successors, (85746), 61025 states have internal predecessors, (85746), 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 23:58:07,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61026 states to 61026 states and 85746 transitions. [2024-11-13 23:58:07,095 INFO L78 Accepts]: Start accepts. Automaton has 61026 states and 85746 transitions. Word has length 76 [2024-11-13 23:58:07,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:58:07,096 INFO L471 AbstractCegarLoop]: Abstraction has 61026 states and 85746 transitions. [2024-11-13 23:58:07,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.9473684210526314) internal successors, (225), 57 states have internal predecessors, (225), 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 23:58:07,097 INFO L276 IsEmpty]: Start isEmpty. Operand 61026 states and 85746 transitions. [2024-11-13 23:58:07,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 23:58:07,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:58:07,106 INFO L215 NwaCegarLoop]: trace histogram [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, 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 23:58:07,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57af9c7e-e92f-46d9-8887-0e07f9e20760/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 23:58:07,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57af9c7e-e92f-46d9-8887-0e07f9e20760/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:58:07,308 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:58:07,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:58:07,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1242083260, now seen corresponding path program 1 times [2024-11-13 23:58:07,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:58:07,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255648748] [2024-11-13 23:58:07,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:58:07,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:58:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:58:07,510 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 23:58:07,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:58:07,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255648748] [2024-11-13 23:58:07,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255648748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:58:07,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:58:07,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 23:58:07,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097034720] [2024-11-13 23:58:07,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:58:07,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 23:58:07,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:58:07,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 23:58:07,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:58:07,513 INFO L87 Difference]: Start difference. First operand 61026 states and 85746 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 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 23:58:08,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:58:08,875 INFO L93 Difference]: Finished difference Result 152577 states and 215637 transitions. [2024-11-13 23:58:08,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:58:08,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 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) Word has length 76 [2024-11-13 23:58:08,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:58:09,025 INFO L225 Difference]: With dead ends: 152577 [2024-11-13 23:58:09,025 INFO L226 Difference]: Without dead ends: 91637 [2024-11-13 23:58:09,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:58:09,065 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 543 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 23:58:09,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 145 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 23:58:09,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91637 states. [2024-11-13 23:58:10,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91637 to 91635. [2024-11-13 23:58:11,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91635 states, 91634 states have (on average 1.4045769037693432) internal successors, (128707), 91634 states have internal predecessors, (128707), 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 23:58:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91635 states to 91635 states and 128707 transitions. [2024-11-13 23:58:11,558 INFO L78 Accepts]: Start accepts. Automaton has 91635 states and 128707 transitions. Word has length 76 [2024-11-13 23:58:11,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:58:11,558 INFO L471 AbstractCegarLoop]: Abstraction has 91635 states and 128707 transitions. [2024-11-13 23:58:11,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 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 23:58:11,558 INFO L276 IsEmpty]: Start isEmpty. Operand 91635 states and 128707 transitions. [2024-11-13 23:58:11,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 23:58:11,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:58:11,566 INFO L215 NwaCegarLoop]: trace histogram [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, 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 23:58:11,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 23:58:11,566 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:58:11,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:58:11,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1399031127, now seen corresponding path program 1 times [2024-11-13 23:58:11,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:58:11,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931506575] [2024-11-13 23:58:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:58:11,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:58:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:58:13,973 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:58:13,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:58:13,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931506575] [2024-11-13 23:58:13,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931506575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:58:13,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276944015] [2024-11-13 23:58:13,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:58:13,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:58:13,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57af9c7e-e92f-46d9-8887-0e07f9e20760/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:58:13,976 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57af9c7e-e92f-46d9-8887-0e07f9e20760/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:58:13,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57af9c7e-e92f-46d9-8887-0e07f9e20760/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 23:58:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:58:14,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-13 23:58:14,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:58:17,534 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:58:17,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:58:48,292 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 23:58:48,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276944015] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:58:48,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [786543797] [2024-11-13 23:58:48,296 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2024-11-13 23:58:48,296 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:58:48,296 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:58:48,296 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:58:48,297 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:59:03,191 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:59:40,662 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '492620#(and (<= ~__return_59613~0 1) (<= ~mode5~0 1) (exists ((|v_ULTIMATE.start_main_~assert__arg~0#1_64| Int)) (= 0 |v_ULTIMATE.start_main_~assert__arg~0#1_64|)) (<= 0 ~__return_59613~0) (<= 0 ~mode5~0))' at error location [2024-11-13 23:59:40,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:59:40,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:59:40,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 20] total 55 [2024-11-13 23:59:40,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255307962] [2024-11-13 23:59:40,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:59:40,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-13 23:59:40,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:59:40,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-13 23:59:40,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1644, Invalid=10566, Unknown=0, NotChecked=0, Total=12210 [2024-11-13 23:59:40,681 INFO L87 Difference]: Start difference. First operand 91635 states and 128707 transitions. Second operand has 55 states, 55 states have (on average 4.090909090909091) internal successors, (225), 55 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 00:03:29,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 00:03:29,691 INFO L93 Difference]: Finished difference Result 420431 states and 596971 transitions. [2024-11-14 00:03:29,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2024-11-14 00:03:29,697 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 4.090909090909091) internal successors, (225), 55 states have internal predecessors, (225), 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) Word has length 76 [2024-11-14 00:03:29,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 00:03:31,312 INFO L225 Difference]: With dead ends: 420431 [2024-11-14 00:03:31,312 INFO L226 Difference]: Without dead ends: 328838 [2024-11-14 00:03:31,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 331 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50330 ImplicationChecksByTransitivity, 241.8s TimeCoverageRelationStatistics Valid=14759, Invalid=95797, Unknown=0, NotChecked=0, Total=110556 [2024-11-14 00:03:31,775 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 11081 mSDsluCounter, 9081 mSDsCounter, 0 mSdLazyCounter, 11641 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11081 SdHoareTripleChecker+Valid, 9314 SdHoareTripleChecker+Invalid, 12175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 11641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2024-11-14 00:03:31,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11081 Valid, 9314 Invalid, 12175 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [534 Valid, 11641 Invalid, 0 Unknown, 0 Unchecked, 24.7s Time] [2024-11-14 00:03:32,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328838 states.