./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i --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_d26d1b2a-4375-47a6-a1f4-478a1175f6d6/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26d1b2a-4375-47a6-a1f4-478a1175f6d6/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_d26d1b2a-4375-47a6-a1f4-478a1175f6d6/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26d1b2a-4375-47a6-a1f4-478a1175f6d6/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26d1b2a-4375-47a6-a1f4-478a1175f6d6/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_d26d1b2a-4375-47a6-a1f4-478a1175f6d6/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 44a70169ef8abd67c211072db1308f16df00422231dd8f14aa88bc39d0b023bb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:08:51,304 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:08:51,397 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26d1b2a-4375-47a6-a1f4-478a1175f6d6/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 05:08:51,407 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:08:51,407 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:08:51,443 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:08:51,445 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:08:51,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:08:51,446 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:08:51,446 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:08:51,446 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:08:51,447 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:08:51,447 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:08:51,447 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:08:51,447 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:08:51,447 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:08:51,447 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:08:51,447 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:08:51,447 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:08:51,447 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:08:51,448 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:08:51,448 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:08:51,448 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:08:51,448 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:08:51,450 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:08:51,450 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:08:51,450 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:08:51,450 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:08:51,450 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:08:51,450 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:08:51,450 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:08:51,450 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:08:51,450 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:08:51,450 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:08:51,451 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:08:51,451 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:08:51,451 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:08:51,451 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:08:51,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:08:51,452 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:08:51,452 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:08:51,452 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:08:51,452 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:08:51,452 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:08:51,452 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:08:51,452 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:08:51,453 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:08:51,453 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_d26d1b2a-4375-47a6-a1f4-478a1175f6d6/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 -> 44a70169ef8abd67c211072db1308f16df00422231dd8f14aa88bc39d0b023bb [2024-11-14 05:08:51,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:08:51,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:08:51,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:08:51,777 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:08:51,778 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:08:51,779 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26d1b2a-4375-47a6-a1f4-478a1175f6d6/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i Unable to find full path for "g++" [2024-11-14 05:08:53,762 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:08:54,103 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:08:54,103 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26d1b2a-4375-47a6-a1f4-478a1175f6d6/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i [2024-11-14 05:08:54,118 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26d1b2a-4375-47a6-a1f4-478a1175f6d6/bin/utaipan-verify-sOmjnqqW8E/data/6fbcacc67/74ed0b2057bc42f0a68a4fb38266fdd7/FLAG2f2e3d60e [2024-11-14 05:08:54,132 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26d1b2a-4375-47a6-a1f4-478a1175f6d6/bin/utaipan-verify-sOmjnqqW8E/data/6fbcacc67/74ed0b2057bc42f0a68a4fb38266fdd7 [2024-11-14 05:08:54,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:08:54,136 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:08:54,137 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:08:54,137 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:08:54,141 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:08:54,142 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:08:54" (1/1) ... [2024-11-14 05:08:54,142 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@566760fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:54, skipping insertion in model container [2024-11-14 05:08:54,142 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:08:54" (1/1) ... [2024-11-14 05:08:54,187 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:08:54,513 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_d26d1b2a-4375-47a6-a1f4-478a1175f6d6/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i[30843,30856] [2024-11-14 05:08:54,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:08:54,536 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:08:54,582 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_d26d1b2a-4375-47a6-a1f4-478a1175f6d6/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i[30843,30856] [2024-11-14 05:08:54,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:08:54,634 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:08:54,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:54 WrapperNode [2024-11-14 05:08:54,635 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:08:54,636 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:08:54,636 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:08:54,636 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:08:54,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:54" (1/1) ... [2024-11-14 05:08:54,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:54" (1/1) ... [2024-11-14 05:08:54,670 INFO L138 Inliner]: procedures = 167, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2024-11-14 05:08:54,671 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:08:54,671 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:08:54,671 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:08:54,671 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:08:54,678 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:54" (1/1) ... [2024-11-14 05:08:54,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:54" (1/1) ... [2024-11-14 05:08:54,681 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:54" (1/1) ... [2024-11-14 05:08:54,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:54" (1/1) ... [2024-11-14 05:08:54,687 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:54" (1/1) ... [2024-11-14 05:08:54,690 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:54" (1/1) ... [2024-11-14 05:08:54,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:54" (1/1) ... [2024-11-14 05:08:54,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:54" (1/1) ... [2024-11-14 05:08:54,695 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:08:54,696 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:08:54,696 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:08:54,696 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:08:54,697 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:54" (1/1) ... [2024-11-14 05:08:54,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:08:54,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26d1b2a-4375-47a6-a1f4-478a1175f6d6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:08:54,734 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26d1b2a-4375-47a6-a1f4-478a1175f6d6/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:08:54,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d26d1b2a-4375-47a6-a1f4-478a1175f6d6/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:08:54,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 05:08:54,767 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-14 05:08:54,767 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-14 05:08:54,767 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-14 05:08:54,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:08:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 05:08:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:08:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-14 05:08:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:08:54,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:08:54,771 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 05:08:54,908 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:08:54,909 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:08:55,090 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-14 05:08:55,090 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:08:55,274 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:08:55,275 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 05:08:55,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:08:55 BoogieIcfgContainer [2024-11-14 05:08:55,277 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:08:55,279 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:08:55,280 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:08:55,284 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:08:55,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:08:54" (1/3) ... [2024-11-14 05:08:55,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a20634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:08:55, skipping insertion in model container [2024-11-14 05:08:55,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:08:54" (2/3) ... [2024-11-14 05:08:55,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a20634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:08:55, skipping insertion in model container [2024-11-14 05:08:55,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:08:55" (3/3) ... [2024-11-14 05:08:55,288 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-zero.i [2024-11-14 05:08:55,306 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:08:55,308 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 11_fmaxsymopt-zero.i that has 2 procedures, 17 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-14 05:08:55,309 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-14 05:08:55,383 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-14 05:08:55,422 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 20 transitions, 44 flow [2024-11-14 05:08:55,438 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 61 states, 58 states have (on average 2.0) internal successors, (116), 60 states have internal predecessors, (116), 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 05:08:55,461 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:08:55,473 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;@c67c404, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:08:55,473 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-14 05:08:55,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 58 states have (on average 2.0) internal successors, (116), 60 states have internal predecessors, (116), 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 05:08:55,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 05:08:55,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:08:55,482 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2024-11-14 05:08:55,482 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:08:55,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:08:55,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1114056968, now seen corresponding path program 1 times [2024-11-14 05:08:55,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:08:55,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020984276] [2024-11-14 05:08:55,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:08:55,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:08:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:08:55,600 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 05:08:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:08:55,651 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 05:08:55,652 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 05:08:55,654 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-11-14 05:08:55,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-11-14 05:08:55,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2024-11-14 05:08:55,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:08:55,662 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-14 05:08:55,667 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-14 05:08:55,668 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-14 05:08:55,714 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-14 05:08:55,722 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 35 transitions, 80 flow [2024-11-14 05:08:55,813 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 765 states, 757 states have (on average 3.093791281373844) internal successors, (2342), 764 states have internal predecessors, (2342), 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 05:08:55,815 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:08:55,816 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;@c67c404, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:08:55,816 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-14 05:08:55,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 765 states, 757 states have (on average 3.093791281373844) internal successors, (2342), 764 states have internal predecessors, (2342), 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 05:08:55,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 05:08:55,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:08:55,821 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:08:55,821 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-14 05:08:55,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:08:55,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1870922639, now seen corresponding path program 1 times [2024-11-14 05:08:55,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:08:55,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337854874] [2024-11-14 05:08:55,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:08:55,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:08:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:08:56,103 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 05:08:56,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:08:56,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337854874] [2024-11-14 05:08:56,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337854874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:08:56,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:08:56,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:08:56,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079835138] [2024-11-14 05:08:56,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:08:56,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:08:56,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:08:56,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:08:56,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:08:56,131 INFO L87 Difference]: Start difference. First operand has 765 states, 757 states have (on average 3.093791281373844) internal successors, (2342), 764 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 05:08:56,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:08:56,368 INFO L93 Difference]: Finished difference Result 1492 states and 4635 transitions. [2024-11-14 05:08:56,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:08:56,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2024-11-14 05:08:56,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:08:56,396 INFO L225 Difference]: With dead ends: 1492 [2024-11-14 05:08:56,396 INFO L226 Difference]: Without dead ends: 1074 [2024-11-14 05:08:56,400 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 05:08:56,403 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 26 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:08:56,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 26 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:08:56,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2024-11-14 05:08:56,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 615. [2024-11-14 05:08:56,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 611 states have (on average 2.7937806873977085) internal successors, (1707), 614 states have internal predecessors, (1707), 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 05:08:56,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 1707 transitions. [2024-11-14 05:08:56,575 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 1707 transitions. Word has length 7 [2024-11-14 05:08:56,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:08:56,575 INFO L471 AbstractCegarLoop]: Abstraction has 615 states and 1707 transitions. [2024-11-14 05:08:56,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 05:08:56,576 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 1707 transitions. [2024-11-14 05:08:56,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 05:08:56,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:08:56,577 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-14 05:08:56,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 05:08:56,577 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-14 05:08:56,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:08:56,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1947703816, now seen corresponding path program 1 times [2024-11-14 05:08:56,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:08:56,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672265262] [2024-11-14 05:08:56,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:08:56,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:08:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:08:56,595 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 05:08:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:08:56,618 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 05:08:56,618 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 05:08:56,618 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-14 05:08:56,619 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-14 05:08:56,619 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-14 05:08:56,619 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-14 05:08:56,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 05:08:56,619 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-14 05:08:56,620 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-14 05:08:56,620 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-14 05:08:56,665 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-14 05:08:56,671 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 50 transitions, 118 flow [2024-11-14 05:08:57,176 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9253 states, 9234 states have (on average 4.235867446393762) internal successors, (39114), 9252 states have internal predecessors, (39114), 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 05:08:57,179 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:08:57,179 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;@c67c404, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:08:57,179 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-14 05:08:57,230 INFO L276 IsEmpty]: Start isEmpty. Operand has 9253 states, 9234 states have (on average 4.235867446393762) internal successors, (39114), 9252 states have internal predecessors, (39114), 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 05:08:57,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 05:08:57,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:08:57,230 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:08:57,231 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-14 05:08:57,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:08:57,231 INFO L85 PathProgramCache]: Analyzing trace with hash 493568527, now seen corresponding path program 1 times [2024-11-14 05:08:57,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:08:57,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372723787] [2024-11-14 05:08:57,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:08:57,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:08:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:08:57,388 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 05:08:57,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:08:57,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372723787] [2024-11-14 05:08:57,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372723787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:08:57,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:08:57,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:08:57,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763860938] [2024-11-14 05:08:57,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:08:57,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:08:57,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:08:57,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:08:57,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:08:57,429 INFO L87 Difference]: Start difference. First operand has 9253 states, 9234 states have (on average 4.235867446393762) internal successors, (39114), 9252 states have internal predecessors, (39114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 05:08:58,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:08:58,458 INFO L93 Difference]: Finished difference Result 18704 states and 79815 transitions. [2024-11-14 05:08:58,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:08:58,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2024-11-14 05:08:58,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:08:58,759 INFO L225 Difference]: With dead ends: 18704 [2024-11-14 05:08:58,759 INFO L226 Difference]: Without dead ends: 12918 [2024-11-14 05:08:58,777 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 05:08:58,778 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 40 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:08:58,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 41 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:08:58,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12918 states. [2024-11-14 05:08:59,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12918 to 7383. [2024-11-14 05:08:59,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7383 states, 7375 states have (on average 3.8615593220338984) internal successors, (28479), 7382 states have internal predecessors, (28479), 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 05:08:59,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7383 states to 7383 states and 28479 transitions. [2024-11-14 05:08:59,392 INFO L78 Accepts]: Start accepts. Automaton has 7383 states and 28479 transitions. Word has length 7 [2024-11-14 05:08:59,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:08:59,392 INFO L471 AbstractCegarLoop]: Abstraction has 7383 states and 28479 transitions. [2024-11-14 05:08:59,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 05:08:59,393 INFO L276 IsEmpty]: Start isEmpty. Operand 7383 states and 28479 transitions. [2024-11-14 05:08:59,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 05:08:59,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:08:59,394 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:08:59,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 05:08:59,394 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-14 05:08:59,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:08:59,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1624623327, now seen corresponding path program 1 times [2024-11-14 05:08:59,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:08:59,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248691779] [2024-11-14 05:08:59,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:08:59,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:08:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:08:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:08:59,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:08:59,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248691779] [2024-11-14 05:08:59,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248691779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:08:59,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:08:59,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:08:59,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320570261] [2024-11-14 05:08:59,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:08:59,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:08:59,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:08:59,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:08:59,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:08:59,543 INFO L87 Difference]: Start difference. First operand 7383 states and 28479 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 05:09:00,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:09:00,179 INFO L93 Difference]: Finished difference Result 14115 states and 53955 transitions. [2024-11-14 05:09:00,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:09:00,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 10 [2024-11-14 05:09:00,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:09:00,311 INFO L225 Difference]: With dead ends: 14115 [2024-11-14 05:09:00,311 INFO L226 Difference]: Without dead ends: 12891 [2024-11-14 05:09:00,321 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 05:09:00,323 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 38 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:09:00,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 38 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:09:00,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12891 states. [2024-11-14 05:09:00,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12891 to 7383. [2024-11-14 05:09:00,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7383 states, 7375 states have (on average 3.7785762711864406) internal successors, (27867), 7382 states have internal predecessors, (27867), 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 05:09:00,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7383 states to 7383 states and 27867 transitions. [2024-11-14 05:09:00,940 INFO L78 Accepts]: Start accepts. Automaton has 7383 states and 27867 transitions. Word has length 10 [2024-11-14 05:09:00,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:09:00,941 INFO L471 AbstractCegarLoop]: Abstraction has 7383 states and 27867 transitions. [2024-11-14 05:09:00,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 05:09:00,942 INFO L276 IsEmpty]: Start isEmpty. Operand 7383 states and 27867 transitions. [2024-11-14 05:09:00,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 05:09:00,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:09:00,944 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:09:00,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 05:09:00,944 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-14 05:09:00,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:09:00,945 INFO L85 PathProgramCache]: Analyzing trace with hash -591336885, now seen corresponding path program 1 times [2024-11-14 05:09:00,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:09:00,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594143606] [2024-11-14 05:09:00,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:09:00,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:09:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:09:01,024 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 05:09:01,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:09:01,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594143606] [2024-11-14 05:09:01,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594143606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:09:01,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:09:01,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:09:01,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843018064] [2024-11-14 05:09:01,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:09:01,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:09:01,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:09:01,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:09:01,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:09:01,026 INFO L87 Difference]: Start difference. First operand 7383 states and 27867 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 05:09:01,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:09:01,394 INFO L93 Difference]: Finished difference Result 14148 states and 53409 transitions. [2024-11-14 05:09:01,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:09:01,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2024-11-14 05:09:01,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:09:01,464 INFO L225 Difference]: With dead ends: 14148 [2024-11-14 05:09:01,464 INFO L226 Difference]: Without dead ends: 8613 [2024-11-14 05:09:01,477 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 05:09:01,478 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 31 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:09:01,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 38 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:09:01,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8613 states. [2024-11-14 05:09:01,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8613 to 7998. [2024-11-14 05:09:01,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7998 states, 7990 states have (on average 3.7783479349186484) internal successors, (30189), 7997 states have internal predecessors, (30189), 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 05:09:02,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7998 states to 7998 states and 30189 transitions. [2024-11-14 05:09:02,040 INFO L78 Accepts]: Start accepts. Automaton has 7998 states and 30189 transitions. Word has length 11 [2024-11-14 05:09:02,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:09:02,041 INFO L471 AbstractCegarLoop]: Abstraction has 7998 states and 30189 transitions. [2024-11-14 05:09:02,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 05:09:02,041 INFO L276 IsEmpty]: Start isEmpty. Operand 7998 states and 30189 transitions. [2024-11-14 05:09:02,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 05:09:02,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:09:02,043 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-14 05:09:02,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 05:09:02,043 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-14 05:09:02,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:09:02,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1063546807, now seen corresponding path program 1 times [2024-11-14 05:09:02,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:09:02,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030376988] [2024-11-14 05:09:02,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:09:02,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:09:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:09:02,059 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 05:09:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 05:09:02,188 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 05:09:02,189 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 05:09:02,189 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-14 05:09:02,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-14 05:09:02,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-14 05:09:02,193 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-14 05:09:02,193 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-14 05:09:02,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 05:09:02,194 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-14 05:09:02,194 WARN L247 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-14 05:09:02,194 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-14 05:09:02,244 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-14 05:09:02,250 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 65 transitions, 158 flow [2024-11-14 05:09:05,880 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 111189 states, 111147 states have (on average 5.39589912458276) internal successors, (599738), 111188 states have internal predecessors, (599738), 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 05:09:05,885 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:09:05,885 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;@c67c404, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:09:05,888 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-14 05:09:06,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 111189 states, 111147 states have (on average 5.39589912458276) internal successors, (599738), 111188 states have internal predecessors, (599738), 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 05:09:06,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 05:09:06,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:09:06,151 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:09:06,152 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 05:09:06,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:09:06,152 INFO L85 PathProgramCache]: Analyzing trace with hash -11949442, now seen corresponding path program 1 times [2024-11-14 05:09:06,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:09:06,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497134348] [2024-11-14 05:09:06,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:09:06,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:09:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:09:06,255 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 05:09:06,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:09:06,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497134348] [2024-11-14 05:09:06,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497134348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:09:06,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:09:06,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:09:06,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37536342] [2024-11-14 05:09:06,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:09:06,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:09:06,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:09:06,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:09:06,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:09:06,452 INFO L87 Difference]: Start difference. First operand has 111189 states, 111147 states have (on average 5.39589912458276) internal successors, (599738), 111188 states have internal predecessors, (599738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 05:09:13,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:09:13,085 INFO L93 Difference]: Finished difference Result 231568 states and 1258123 transitions. [2024-11-14 05:09:13,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:09:13,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2024-11-14 05:09:13,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:09:15,182 INFO L225 Difference]: With dead ends: 231568 [2024-11-14 05:09:15,182 INFO L226 Difference]: Without dead ends: 155046 [2024-11-14 05:09:15,334 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 05:09:15,335 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 54 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:09:15,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 56 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:09:15,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155046 states. [2024-11-14 05:09:20,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155046 to 88599. [2024-11-14 05:09:20,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88599 states, 88583 states have (on average 4.941433457886953) internal successors, (437727), 88598 states have internal predecessors, (437727), 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 05:09:21,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88599 states to 88599 states and 437727 transitions. [2024-11-14 05:09:22,864 INFO L78 Accepts]: Start accepts. Automaton has 88599 states and 437727 transitions. Word has length 7 [2024-11-14 05:09:22,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:09:22,865 INFO L471 AbstractCegarLoop]: Abstraction has 88599 states and 437727 transitions. [2024-11-14 05:09:22,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 05:09:22,865 INFO L276 IsEmpty]: Start isEmpty. Operand 88599 states and 437727 transitions. [2024-11-14 05:09:22,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 05:09:22,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:09:22,866 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:09:22,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 05:09:22,866 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 05:09:22,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:09:22,867 INFO L85 PathProgramCache]: Analyzing trace with hash -46730689, now seen corresponding path program 1 times [2024-11-14 05:09:22,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:09:22,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262949170] [2024-11-14 05:09:22,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:09:22,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:09:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:09:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:09:22,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:09:22,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262949170] [2024-11-14 05:09:22,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262949170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:09:22,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:09:22,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:09:22,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061392068] [2024-11-14 05:09:22,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:09:22,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:09:22,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:09:22,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:09:22,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:09:22,944 INFO L87 Difference]: Start difference. First operand 88599 states and 437727 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 05:09:26,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:09:26,785 INFO L93 Difference]: Finished difference Result 169779 states and 832143 transitions. [2024-11-14 05:09:26,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:09:26,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 10 [2024-11-14 05:09:26,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:09:28,987 INFO L225 Difference]: With dead ends: 169779 [2024-11-14 05:09:28,987 INFO L226 Difference]: Without dead ends: 155019 [2024-11-14 05:09:29,044 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 05:09:29,045 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 52 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:09:29,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 53 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:09:29,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155019 states. [2024-11-14 05:09:33,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155019 to 88599. [2024-11-14 05:09:33,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88599 states, 88583 states have (on average 4.858121761511803) internal successors, (430347), 88598 states have internal predecessors, (430347), 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 05:09:34,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88599 states to 88599 states and 430347 transitions. [2024-11-14 05:09:35,088 INFO L78 Accepts]: Start accepts. Automaton has 88599 states and 430347 transitions. Word has length 10 [2024-11-14 05:09:35,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:09:35,088 INFO L471 AbstractCegarLoop]: Abstraction has 88599 states and 430347 transitions. [2024-11-14 05:09:35,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 05:09:35,088 INFO L276 IsEmpty]: Start isEmpty. Operand 88599 states and 430347 transitions. [2024-11-14 05:09:35,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 05:09:35,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:09:35,089 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:09:35,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-14 05:09:35,089 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-14 05:09:35,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:09:35,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1600954106, now seen corresponding path program 1 times [2024-11-14 05:09:35,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:09:35,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402998879] [2024-11-14 05:09:35,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:09:35,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:09:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:09:35,151 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 05:09:35,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:09:35,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402998879] [2024-11-14 05:09:35,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402998879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:09:35,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:09:35,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:09:35,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874530639] [2024-11-14 05:09:35,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:09:35,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:09:35,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:09:35,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:09:35,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:09:35,154 INFO L87 Difference]: Start difference. First operand 88599 states and 430347 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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)