./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.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_15ea1f75-6dd1-4f16-afb6-bc968746c7de/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ea1f75-6dd1-4f16-afb6-bc968746c7de/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_15ea1f75-6dd1-4f16-afb6-bc968746c7de/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ea1f75-6dd1-4f16-afb6-bc968746c7de/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ea1f75-6dd1-4f16-afb6-bc968746c7de/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_15ea1f75-6dd1-4f16-afb6-bc968746c7de/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 a79fe9fcfc95192d454ac05616e4d9a71dbf2bcc8b4fd9d21dcef47910a50542 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:58:28,599 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:58:28,715 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ea1f75-6dd1-4f16-afb6-bc968746c7de/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:58:28,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:58:28,730 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:58:28,778 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:58:28,780 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:58:28,780 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:58:28,780 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:58:28,781 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:58:28,781 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:58:28,781 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:58:28,782 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:58:28,783 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:58:28,783 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:58:28,783 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:58:28,783 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:58:28,783 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:58:28,784 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:58:28,784 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:58:28,785 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:58:28,785 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:58:28,785 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:58:28,785 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:58:28,786 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:58:28,786 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:58:28,786 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:58:28,787 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:58:28,787 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:58:28,787 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:58:28,787 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:58:28,787 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:58:28,787 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:58:28,788 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:58:28,788 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:58:28,788 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:58:28,788 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:58:28,789 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:58:28,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:58:28,790 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:58:28,790 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:58:28,790 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:58:28,790 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:58:28,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:58:28,791 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:58:28,791 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:58:28,791 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:58:28,792 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_15ea1f75-6dd1-4f16-afb6-bc968746c7de/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 -> a79fe9fcfc95192d454ac05616e4d9a71dbf2bcc8b4fd9d21dcef47910a50542 [2024-11-14 03:58:29,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:58:29,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:58:29,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:58:29,225 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:58:29,225 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:58:29,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ea1f75-6dd1-4f16-afb6-bc968746c7de/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c Unable to find full path for "g++" [2024-11-14 03:58:31,608 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:58:31,957 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:58:31,957 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ea1f75-6dd1-4f16-afb6-bc968746c7de/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2024-11-14 03:58:31,976 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ea1f75-6dd1-4f16-afb6-bc968746c7de/bin/utaipan-verify-sOmjnqqW8E/data/2dcf2ff31/41e2237e5efe404391b5f9b56bc5fa52/FLAGa2d496fae [2024-11-14 03:58:31,995 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ea1f75-6dd1-4f16-afb6-bc968746c7de/bin/utaipan-verify-sOmjnqqW8E/data/2dcf2ff31/41e2237e5efe404391b5f9b56bc5fa52 [2024-11-14 03:58:31,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:58:32,000 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:58:32,002 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:58:32,002 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:58:32,008 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:58:32,009 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:58:31" (1/1) ... [2024-11-14 03:58:32,010 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fc89b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:32, skipping insertion in model container [2024-11-14 03:58:32,010 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:58:31" (1/1) ... [2024-11-14 03:58:32,035 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:58:32,345 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_15ea1f75-6dd1-4f16-afb6-bc968746c7de/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c[4226,4239] [2024-11-14 03:58:32,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:58:32,387 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:58:32,423 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_15ea1f75-6dd1-4f16-afb6-bc968746c7de/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c[4226,4239] [2024-11-14 03:58:32,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:58:32,448 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:58:32,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:32 WrapperNode [2024-11-14 03:58:32,449 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:58:32,453 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:58:32,454 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:58:32,454 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:58:32,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:32" (1/1) ... [2024-11-14 03:58:32,479 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:32" (1/1) ... [2024-11-14 03:58:32,536 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 301 [2024-11-14 03:58:32,539 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:58:32,540 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:58:32,540 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:58:32,540 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:58:32,554 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:32" (1/1) ... [2024-11-14 03:58:32,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:32" (1/1) ... [2024-11-14 03:58:32,560 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:32" (1/1) ... [2024-11-14 03:58:32,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:32" (1/1) ... [2024-11-14 03:58:32,580 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:32" (1/1) ... [2024-11-14 03:58:32,596 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:32" (1/1) ... [2024-11-14 03:58:32,599 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:32" (1/1) ... [2024-11-14 03:58:32,604 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:32" (1/1) ... [2024-11-14 03:58:32,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:58:32,613 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:58:32,613 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:58:32,613 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:58:32,615 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:32" (1/1) ... [2024-11-14 03:58:32,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:58:32,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ea1f75-6dd1-4f16-afb6-bc968746c7de/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:58:32,680 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ea1f75-6dd1-4f16-afb6-bc968746c7de/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:58:32,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ea1f75-6dd1-4f16-afb6-bc968746c7de/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:58:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:58:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-14 03:58:32,709 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-14 03:58:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-14 03:58:32,709 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-14 03:58:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-14 03:58:32,709 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-14 03:58:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-14 03:58:32,709 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-14 03:58:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:58:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 03:58:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-14 03:58:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-14 03:58:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 03:58:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:58:32,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:58:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 03:58:32,712 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-14 03:58:32,870 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:58:32,873 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:58:33,562 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-14 03:58:33,562 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:58:34,227 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:58:34,229 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-14 03:58:34,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:58:34 BoogieIcfgContainer [2024-11-14 03:58:34,230 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:58:34,233 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:58:34,234 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:58:34,239 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:58:34,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:58:31" (1/3) ... [2024-11-14 03:58:34,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1af414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:58:34, skipping insertion in model container [2024-11-14 03:58:34,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:32" (2/3) ... [2024-11-14 03:58:34,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1af414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:58:34, skipping insertion in model container [2024-11-14 03:58:34,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:58:34" (3/3) ... [2024-11-14 03:58:34,244 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2024-11-14 03:58:34,269 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:58:34,272 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-buffer-mult-alt2.wvr.c that has 5 procedures, 43 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-14 03:58:34,276 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-14 03:58:34,416 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-14 03:58:34,477 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 48 transitions, 124 flow [2024-11-14 03:58:34,946 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3373 states, 3372 states have (on average 4.337188612099644) internal successors, (14625), 3372 states have internal predecessors, (14625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:58:34,988 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:58:35,014 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;@66b7b510, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:58:35,017 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-14 03:58:35,036 INFO L276 IsEmpty]: Start isEmpty. Operand has 3373 states, 3372 states have (on average 4.337188612099644) internal successors, (14625), 3372 states have internal predecessors, (14625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:58:35,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-14 03:58:35,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:58:35,106 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] [2024-11-14 03:58:35,107 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-14 03:58:35,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:58:35,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1770667525, now seen corresponding path program 1 times [2024-11-14 03:58:35,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:58:35,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969467233] [2024-11-14 03:58:35,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:35,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:58:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:36,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:58:36,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:58:36,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969467233] [2024-11-14 03:58:36,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969467233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:58:36,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:58:36,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:58:36,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085312098] [2024-11-14 03:58:36,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:58:36,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:58:36,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:58:36,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:58:36,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:58:36,460 INFO L87 Difference]: Start difference. First operand has 3373 states, 3372 states have (on average 4.337188612099644) internal successors, (14625), 3372 states have internal predecessors, (14625), 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 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:58:37,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:58:37,301 INFO L93 Difference]: Finished difference Result 5706 states and 24700 transitions. [2024-11-14 03:58:37,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:58:37,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 29 [2024-11-14 03:58:37,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:58:37,425 INFO L225 Difference]: With dead ends: 5706 [2024-11-14 03:58:37,425 INFO L226 Difference]: Without dead ends: 4927 [2024-11-14 03:58:37,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:58:37,441 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 117 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:58:37,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 47 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:58:37,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4927 states. [2024-11-14 03:58:37,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4927 to 3891. [2024-11-14 03:58:37,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3891 states, 3890 states have (on average 4.343701799485861) internal successors, (16897), 3890 states have internal predecessors, (16897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:58:37,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3891 states to 3891 states and 16897 transitions. [2024-11-14 03:58:37,952 INFO L78 Accepts]: Start accepts. Automaton has 3891 states and 16897 transitions. Word has length 29 [2024-11-14 03:58:37,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:58:37,954 INFO L471 AbstractCegarLoop]: Abstraction has 3891 states and 16897 transitions. [2024-11-14 03:58:37,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:58:37,956 INFO L276 IsEmpty]: Start isEmpty. Operand 3891 states and 16897 transitions. [2024-11-14 03:58:37,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 03:58:37,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:58:37,982 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] [2024-11-14 03:58:37,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:58:37,982 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-14 03:58:37,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:58:37,984 INFO L85 PathProgramCache]: Analyzing trace with hash -213380308, now seen corresponding path program 1 times [2024-11-14 03:58:37,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:58:37,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951747584] [2024-11-14 03:58:37,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:37,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:58:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:38,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:58:38,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:58:38,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951747584] [2024-11-14 03:58:38,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951747584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:58:38,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:58:38,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:58:38,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127374638] [2024-11-14 03:58:38,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:58:38,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:58:38,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:58:38,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:58:38,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:58:38,523 INFO L87 Difference]: Start difference. First operand 3891 states and 16897 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:58:39,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:58:39,334 INFO L93 Difference]: Finished difference Result 6770 states and 29588 transitions. [2024-11-14 03:58:39,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:58:39,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 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 32 [2024-11-14 03:58:39,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:58:39,412 INFO L225 Difference]: With dead ends: 6770 [2024-11-14 03:58:39,412 INFO L226 Difference]: Without dead ends: 6131 [2024-11-14 03:58:39,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:58:39,423 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 82 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:58:39,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 60 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:58:39,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6131 states. [2024-11-14 03:58:39,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6131 to 4703. [2024-11-14 03:58:39,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4703 states, 4702 states have (on average 4.34857507443641) internal successors, (20447), 4702 states have internal predecessors, (20447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:58:40,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4703 states to 4703 states and 20447 transitions. [2024-11-14 03:58:40,013 INFO L78 Accepts]: Start accepts. Automaton has 4703 states and 20447 transitions. Word has length 32 [2024-11-14 03:58:40,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:58:40,013 INFO L471 AbstractCegarLoop]: Abstraction has 4703 states and 20447 transitions. [2024-11-14 03:58:40,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:58:40,015 INFO L276 IsEmpty]: Start isEmpty. Operand 4703 states and 20447 transitions. [2024-11-14 03:58:40,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 03:58:40,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:58:40,038 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] [2024-11-14 03:58:40,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 03:58:40,039 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-14 03:58:40,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:58:40,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1686913364, now seen corresponding path program 2 times [2024-11-14 03:58:40,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:58:40,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314941723] [2024-11-14 03:58:40,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:40,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:58:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:40,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:58:40,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:58:40,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314941723] [2024-11-14 03:58:40,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314941723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:58:40,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:58:40,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:58:40,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187708701] [2024-11-14 03:58:40,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:58:40,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:58:40,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:58:40,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:58:40,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:58:40,366 INFO L87 Difference]: Start difference. First operand 4703 states and 20447 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:58:41,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:58:41,356 INFO L93 Difference]: Finished difference Result 9826 states and 42755 transitions. [2024-11-14 03:58:41,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:58:41,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2024-11-14 03:58:41,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:58:41,415 INFO L225 Difference]: With dead ends: 9826 [2024-11-14 03:58:41,416 INFO L226 Difference]: Without dead ends: 4704 [2024-11-14 03:58:41,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:58:41,429 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 18 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:58:41,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 51 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:58:41,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4704 states. [2024-11-14 03:58:41,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4704 to 4704. [2024-11-14 03:58:41,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4704 states, 4703 states have (on average 4.347863066128004) internal successors, (20448), 4703 states have internal predecessors, (20448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:58:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4704 states to 4704 states and 20448 transitions. [2024-11-14 03:58:41,928 INFO L78 Accepts]: Start accepts. Automaton has 4704 states and 20448 transitions. Word has length 32 [2024-11-14 03:58:41,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:58:41,929 INFO L471 AbstractCegarLoop]: Abstraction has 4704 states and 20448 transitions. [2024-11-14 03:58:41,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:58:41,930 INFO L276 IsEmpty]: Start isEmpty. Operand 4704 states and 20448 transitions. [2024-11-14 03:58:41,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 03:58:41,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:58:41,955 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] [2024-11-14 03:58:41,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:58:41,956 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-14 03:58:41,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:58:41,956 INFO L85 PathProgramCache]: Analyzing trace with hash 722326222, now seen corresponding path program 1 times [2024-11-14 03:58:41,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:58:41,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815091714] [2024-11-14 03:58:41,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:41,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:58:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:58:42,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:58:42,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815091714] [2024-11-14 03:58:42,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815091714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:58:42,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:58:42,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:58:42,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054907959] [2024-11-14 03:58:42,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:58:42,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:58:42,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:58:42,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:58:42,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:58:42,346 INFO L87 Difference]: Start difference. First operand 4704 states and 20448 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:58:43,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:58:43,366 INFO L93 Difference]: Finished difference Result 8208 states and 35700 transitions. [2024-11-14 03:58:43,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:58:43,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 33 [2024-11-14 03:58:43,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:58:43,445 INFO L225 Difference]: With dead ends: 8208 [2024-11-14 03:58:43,445 INFO L226 Difference]: Without dead ends: 7821 [2024-11-14 03:58:43,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:58:43,453 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 111 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:58:43,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 79 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:58:43,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7821 states. [2024-11-14 03:58:44,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7821 to 4900. [2024-11-14 03:58:44,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4900 states, 4899 states have (on average 4.350683813023066) internal successors, (21314), 4899 states have internal predecessors, (21314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:58:44,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4900 states to 4900 states and 21314 transitions. [2024-11-14 03:58:44,106 INFO L78 Accepts]: Start accepts. Automaton has 4900 states and 21314 transitions. Word has length 33 [2024-11-14 03:58:44,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:58:44,106 INFO L471 AbstractCegarLoop]: Abstraction has 4900 states and 21314 transitions. [2024-11-14 03:58:44,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:58:44,107 INFO L276 IsEmpty]: Start isEmpty. Operand 4900 states and 21314 transitions. [2024-11-14 03:58:44,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-14 03:58:44,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:58:44,131 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] [2024-11-14 03:58:44,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 03:58:44,131 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-14 03:58:44,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:58:44,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2090055451, now seen corresponding path program 1 times [2024-11-14 03:58:44,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:58:44,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879180698] [2024-11-14 03:58:44,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:44,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:58:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:44,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:58:44,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:58:44,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879180698] [2024-11-14 03:58:44,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879180698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:58:44,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:58:44,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:58:44,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941470431] [2024-11-14 03:58:44,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:58:44,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:58:44,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:58:44,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:58:44,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:58:44,323 INFO L87 Difference]: Start difference. First operand 4900 states and 21314 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:58:45,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:58:45,078 INFO L93 Difference]: Finished difference Result 7779 states and 33873 transitions. [2024-11-14 03:58:45,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:58:45,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2024-11-14 03:58:45,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:58:45,129 INFO L225 Difference]: With dead ends: 7779 [2024-11-14 03:58:45,130 INFO L226 Difference]: Without dead ends: 4494 [2024-11-14 03:58:45,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:58:45,141 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:58:45,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 29 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:58:45,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4494 states. [2024-11-14 03:58:45,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4494 to 4494. [2024-11-14 03:58:45,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4494 states, 4493 states have (on average 4.263966169597151) internal successors, (19158), 4493 states have internal predecessors, (19158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:58:45,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4494 states to 4494 states and 19158 transitions. [2024-11-14 03:58:45,824 INFO L78 Accepts]: Start accepts. Automaton has 4494 states and 19158 transitions. Word has length 36 [2024-11-14 03:58:45,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:58:45,825 INFO L471 AbstractCegarLoop]: Abstraction has 4494 states and 19158 transitions. [2024-11-14 03:58:45,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:58:45,825 INFO L276 IsEmpty]: Start isEmpty. Operand 4494 states and 19158 transitions. [2024-11-14 03:58:45,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-14 03:58:45,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:58:45,851 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] [2024-11-14 03:58:45,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 03:58:45,852 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-14 03:58:45,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:58:45,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1001931961, now seen corresponding path program 2 times [2024-11-14 03:58:45,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:58:45,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694691233] [2024-11-14 03:58:45,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:45,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:58:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:47,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:58:47,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:58:47,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694691233] [2024-11-14 03:58:47,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694691233] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:58:47,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929681734] [2024-11-14 03:58:47,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:58:47,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:58:47,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ea1f75-6dd1-4f16-afb6-bc968746c7de/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:58:47,156 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ea1f75-6dd1-4f16-afb6-bc968746c7de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:58:47,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ea1f75-6dd1-4f16-afb6-bc968746c7de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:58:47,444 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 03:58:47,444 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:58:47,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 03:58:47,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:58:47,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-14 03:58:47,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-14 03:58:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:58:47,942 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:58:48,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2024-11-14 03:58:48,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2024-11-14 03:58:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:58:48,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929681734] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:58:48,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [356318216] [2024-11-14 03:58:48,806 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 03:58:48,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:58:48,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-14 03:58:48,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017211743] [2024-11-14 03:58:48,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:58:48,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 03:58:48,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:58:48,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 03:58:48,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-14 03:58:48,811 INFO L87 Difference]: Start difference. First operand 4494 states and 19158 transitions. Second operand has 18 states, 18 states have (on average 4.0) internal successors, (72), 17 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) [2024-11-14 03:58:53,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:58:53,452 INFO L93 Difference]: Finished difference Result 19995 states and 85545 transitions. [2024-11-14 03:58:53,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-14 03:58:53,453 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 17 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 36 [2024-11-14 03:58:53,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:58:53,623 INFO L225 Difference]: With dead ends: 19995 [2024-11-14 03:58:53,623 INFO L226 Difference]: Without dead ends: 16917 [2024-11-14 03:58:53,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2024-11-14 03:58:53,637 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 416 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:58:53,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 459 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 03:58:53,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16917 states. [2024-11-14 03:58:55,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16917 to 11542. [2024-11-14 03:58:55,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11542 states, 11541 states have (on average 4.276752447794818) internal successors, (49358), 11541 states have internal predecessors, (49358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:58:55,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11542 states to 11542 states and 49358 transitions. [2024-11-14 03:58:55,877 INFO L78 Accepts]: Start accepts. Automaton has 11542 states and 49358 transitions. Word has length 36 [2024-11-14 03:58:55,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:58:55,878 INFO L471 AbstractCegarLoop]: Abstraction has 11542 states and 49358 transitions. [2024-11-14 03:58:55,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 17 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) [2024-11-14 03:58:55,879 INFO L276 IsEmpty]: Start isEmpty. Operand 11542 states and 49358 transitions. [2024-11-14 03:58:55,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 03:58:55,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:58:55,931 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:58:55,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ea1f75-6dd1-4f16-afb6-bc968746c7de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 03:58:56,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ea1f75-6dd1-4f16-afb6-bc968746c7de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:58:56,136 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-14 03:58:56,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:58:56,137 INFO L85 PathProgramCache]: Analyzing trace with hash 215275023, now seen corresponding path program 1 times [2024-11-14 03:58:56,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:58:56,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650356173] [2024-11-14 03:58:56,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:56,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:58:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:58:57,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:58:57,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650356173] [2024-11-14 03:58:57,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650356173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:58:57,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436678115] [2024-11-14 03:58:57,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:57,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:58:57,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ea1f75-6dd1-4f16-afb6-bc968746c7de/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:58:57,701 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ea1f75-6dd1-4f16-afb6-bc968746c7de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:58:57,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ea1f75-6dd1-4f16-afb6-bc968746c7de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:58:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:57,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 03:58:57,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:58:58,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-14 03:58:58,135 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:58:58,135 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:58:58,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:58:58,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-11-14 03:58:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:58:58,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436678115] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:58:58,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [49719651] [2024-11-14 03:58:58,345 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 03:58:58,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:58:58,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2024-11-14 03:58:58,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013519112] [2024-11-14 03:58:58,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:58:58,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-14 03:58:58,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:58:58,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-14 03:58:58,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-11-14 03:58:58,350 INFO L87 Difference]: Start difference. First operand 11542 states and 49358 transitions. Second operand has 15 states, 15 states have (on average 4.8) internal successors, (72), 14 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) [2024-11-14 03:59:03,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:03,140 INFO L93 Difference]: Finished difference Result 20131 states and 86062 transitions. [2024-11-14 03:59:03,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 03:59:03,141 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 14 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 38 [2024-11-14 03:59:03,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:03,338 INFO L225 Difference]: With dead ends: 20131 [2024-11-14 03:59:03,338 INFO L226 Difference]: Without dead ends: 20072 [2024-11-14 03:59:03,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-14 03:59:03,351 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 245 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:59:03,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 326 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:59:03,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20072 states. [2024-11-14 03:59:05,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20072 to 10534. [2024-11-14 03:59:05,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10534 states, 10533 states have (on average 4.302952625083072) internal successors, (45323), 10533 states have internal predecessors, (45323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:59:05,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10534 states to 10534 states and 45323 transitions. [2024-11-14 03:59:05,334 INFO L78 Accepts]: Start accepts. Automaton has 10534 states and 45323 transitions. Word has length 38 [2024-11-14 03:59:05,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:05,335 INFO L471 AbstractCegarLoop]: Abstraction has 10534 states and 45323 transitions. [2024-11-14 03:59:05,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 14 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) [2024-11-14 03:59:05,335 INFO L276 IsEmpty]: Start isEmpty. Operand 10534 states and 45323 transitions. [2024-11-14 03:59:05,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-14 03:59:05,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:05,375 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] [2024-11-14 03:59:05,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ea1f75-6dd1-4f16-afb6-bc968746c7de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 03:59:05,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15ea1f75-6dd1-4f16-afb6-bc968746c7de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-14 03:59:05,576 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-14 03:59:05,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:05,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1608055226, now seen corresponding path program 1 times [2024-11-14 03:59:05,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:05,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538046500] [2024-11-14 03:59:05,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:05,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:05,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 03:59:05,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:05,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538046500] [2024-11-14 03:59:05,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538046500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:59:05,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:59:05,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:59:05,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515375328] [2024-11-14 03:59:05,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:59:05,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:59:05,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:05,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:59:05,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:59:05,751 INFO L87 Difference]: Start difference. First operand 10534 states and 45323 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:59:09,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:09,196 INFO L93 Difference]: Finished difference Result 17861 states and 77112 transitions. [2024-11-14 03:59:09,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:59:09,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-11-14 03:59:09,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:09,301 INFO L225 Difference]: With dead ends: 17861 [2024-11-14 03:59:09,301 INFO L226 Difference]: Without dead ends: 13407 [2024-11-14 03:59:09,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:59:09,319 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 5 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:59:09,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 29 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:59:09,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13407 states. [2024-11-14 03:59:12,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13407 to 12951. [2024-11-14 03:59:12,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12951 states, 12950 states have (on average 4.242702702702703) internal successors, (54943), 12950 states have internal predecessors, (54943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:59:12,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12951 states to 12951 states and 54943 transitions. [2024-11-14 03:59:12,787 INFO L78 Accepts]: Start accepts. Automaton has 12951 states and 54943 transitions. Word has length 39 [2024-11-14 03:59:12,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:12,788 INFO L471 AbstractCegarLoop]: Abstraction has 12951 states and 54943 transitions. [2024-11-14 03:59:12,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:59:12,788 INFO L276 IsEmpty]: Start isEmpty. Operand 12951 states and 54943 transitions. [2024-11-14 03:59:12,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-14 03:59:12,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:12,848 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 03:59:12,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 03:59:12,849 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-14 03:59:12,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:12,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1777660236, now seen corresponding path program 3 times [2024-11-14 03:59:12,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:12,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403464678] [2024-11-14 03:59:12,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:12,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:13,058 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:59:13,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:13,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403464678] [2024-11-14 03:59:13,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403464678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:59:13,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:59:13,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:59:13,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562504742] [2024-11-14 03:59:13,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:59:13,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:59:13,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:13,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:59:13,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:59:13,062 INFO L87 Difference]: Start difference. First operand 12951 states and 54943 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:59:18,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:18,724 INFO L93 Difference]: Finished difference Result 28864 states and 123630 transitions. [2024-11-14 03:59:18,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:59:18,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 40 [2024-11-14 03:59:18,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:18,898 INFO L225 Difference]: With dead ends: 28864 [2024-11-14 03:59:18,898 INFO L226 Difference]: Without dead ends: 25182 [2024-11-14 03:59:18,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:59:18,916 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 75 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:59:18,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 42 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:59:18,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25182 states. [2024-11-14 03:59:22,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25182 to 22605. [2024-11-14 03:59:22,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22605 states, 22604 states have (on average 4.353963900194656) internal successors, (98417), 22604 states have internal predecessors, (98417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:59:22,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22605 states to 22605 states and 98417 transitions. [2024-11-14 03:59:22,642 INFO L78 Accepts]: Start accepts. Automaton has 22605 states and 98417 transitions. Word has length 40 [2024-11-14 03:59:22,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:22,643 INFO L471 AbstractCegarLoop]: Abstraction has 22605 states and 98417 transitions. [2024-11-14 03:59:22,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:59:22,643 INFO L276 IsEmpty]: Start isEmpty. Operand 22605 states and 98417 transitions. [2024-11-14 03:59:22,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-14 03:59:22,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:22,698 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] [2024-11-14 03:59:22,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-14 03:59:22,698 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-14 03:59:22,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:22,698 INFO L85 PathProgramCache]: Analyzing trace with hash -207582647, now seen corresponding path program 1 times [2024-11-14 03:59:22,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:22,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774266044] [2024-11-14 03:59:22,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:22,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:22,865 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:59:22,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:22,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774266044] [2024-11-14 03:59:22,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774266044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:59:22,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:59:22,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:59:22,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734707964] [2024-11-14 03:59:22,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:59:22,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:59:22,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:22,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:59:22,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:59:22,867 INFO L87 Difference]: Start difference. First operand 22605 states and 98417 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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)