./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje --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 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:12:11,243 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:12:11,343 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 06:12:11,349 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:12:11,350 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:12:11,377 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:12:11,378 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:12:11,378 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:12:11,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:12:11,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:12:11,380 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:12:11,380 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:12:11,381 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:12:11,381 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:12:11,382 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:12:11,382 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:12:11,382 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:12:11,383 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:12:11,383 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:12:11,384 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:12:11,384 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:12:11,388 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:12:11,389 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:12:11,389 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:12:11,389 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:12:11,390 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:12:11,390 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:12:11,390 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:12:11,391 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:12:11,391 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:12:11,391 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:12:11,393 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:12:11,394 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:12:11,394 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:12:11,394 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:12:11,395 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:12:11,395 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:12:11,395 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:12:11,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:12:11,396 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:12:11,396 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:12:11,397 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:12:11,398 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:12:11,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:12:11,398 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:12:11,399 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:12:11,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:12:11,399 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2024-11-09 06:12:11,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:12:11,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:12:11,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:12:11,664 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:12:11,665 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:12:11,666 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c Unable to find full path for "g++" [2024-11-09 06:12:13,738 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:12:13,941 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:12:13,942 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2024-11-09 06:12:13,950 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/data/ff085c81b/8c28aefca57b4e7a874afee43e7773ee/FLAG569b8cec6 [2024-11-09 06:12:13,966 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/data/ff085c81b/8c28aefca57b4e7a874afee43e7773ee [2024-11-09 06:12:13,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:12:13,970 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:12:13,972 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:12:13,972 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:12:13,978 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:12:13,979 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:12:13" (1/1) ... [2024-11-09 06:12:13,980 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d933dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:13, skipping insertion in model container [2024-11-09 06:12:13,980 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:12:13" (1/1) ... [2024-11-09 06:12:14,008 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:12:14,298 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_43a82d87-3a53-4917-b555-0a1a221a21b1/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3331,3344] [2024-11-09 06:12:14,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:12:14,324 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:12:14,373 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_43a82d87-3a53-4917-b555-0a1a221a21b1/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3331,3344] [2024-11-09 06:12:14,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:12:14,407 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:12:14,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:14 WrapperNode [2024-11-09 06:12:14,407 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:12:14,409 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:12:14,409 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:12:14,409 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:12:14,417 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:14" (1/1) ... [2024-11-09 06:12:14,431 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:14" (1/1) ... [2024-11-09 06:12:14,466 INFO L138 Inliner]: procedures = 24, calls = 29, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 162 [2024-11-09 06:12:14,466 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:12:14,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:12:14,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:12:14,471 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:12:14,483 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:14" (1/1) ... [2024-11-09 06:12:14,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:14" (1/1) ... [2024-11-09 06:12:14,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:14" (1/1) ... [2024-11-09 06:12:14,491 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:14" (1/1) ... [2024-11-09 06:12:14,503 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:14" (1/1) ... [2024-11-09 06:12:14,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:14" (1/1) ... [2024-11-09 06:12:14,509 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:14" (1/1) ... [2024-11-09 06:12:14,510 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:14" (1/1) ... [2024-11-09 06:12:14,513 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:12:14,515 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:12:14,515 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:12:14,515 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:12:14,520 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:14" (1/1) ... [2024-11-09 06:12:14,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:12:14,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:12:14,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:12:14,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:12:14,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:12:14,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 06:12:14,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 06:12:14,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 06:12:14,618 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 06:12:14,619 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 06:12:14,619 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 06:12:14,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:12:14,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 06:12:14,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 06:12:14,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:12:14,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:12:14,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:12:14,623 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 06:12:14,805 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:12:14,808 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:12:15,425 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 06:12:15,425 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:12:15,826 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:12:15,826 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 06:12:15,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:12:15 BoogieIcfgContainer [2024-11-09 06:12:15,827 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:12:15,831 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:12:15,832 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:12:15,837 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:12:15,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:12:13" (1/3) ... [2024-11-09 06:12:15,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1880fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:12:15, skipping insertion in model container [2024-11-09 06:12:15,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:12:14" (2/3) ... [2024-11-09 06:12:15,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1880fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:12:15, skipping insertion in model container [2024-11-09 06:12:15,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:12:15" (3/3) ... [2024-11-09 06:12:15,841 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2024-11-09 06:12:15,862 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:12:15,862 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:12:15,862 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 06:12:16,016 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 06:12:16,058 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 64 transitions, 149 flow [2024-11-09 06:12:16,230 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1254 states, 1253 states have (on average 4.415802075019952) internal successors, (5533), 1253 states have internal predecessors, (5533), 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) [2024-11-09 06:12:16,262 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:12:16,272 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;@7f4661ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:12:16,272 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 06:12:16,279 INFO L276 IsEmpty]: Start isEmpty. Operand has 1254 states, 1253 states have (on average 4.415802075019952) internal successors, (5533), 1253 states have internal predecessors, (5533), 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) [2024-11-09 06:12:16,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 06:12:16,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:16,315 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] [2024-11-09 06:12:16,316 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 1 more)] === [2024-11-09 06:12:16,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:16,324 INFO L85 PathProgramCache]: Analyzing trace with hash 264224385, now seen corresponding path program 1 times [2024-11-09 06:12:16,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:16,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304143718] [2024-11-09 06:12:16,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:16,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:17,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:17,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:17,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304143718] [2024-11-09 06:12:17,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304143718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:17,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:17,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:17,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567333066] [2024-11-09 06:12:17,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:17,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:17,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:17,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:17,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:17,333 INFO L87 Difference]: Start difference. First operand has 1254 states, 1253 states have (on average 4.415802075019952) internal successors, (5533), 1253 states have internal predecessors, (5533), 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 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-09 06:12:17,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:17,801 INFO L93 Difference]: Finished difference Result 1789 states and 7308 transitions. [2024-11-09 06:12:17,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:17,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2024-11-09 06:12:17,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:17,842 INFO L225 Difference]: With dead ends: 1789 [2024-11-09 06:12:17,843 INFO L226 Difference]: Without dead ends: 1764 [2024-11-09 06:12:17,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:17,851 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 69 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:17,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 100 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:12:17,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2024-11-09 06:12:18,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1316. [2024-11-09 06:12:18,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1315 states have (on average 4.344486692015209) internal successors, (5713), 1315 states have internal predecessors, (5713), 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) [2024-11-09 06:12:18,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 5713 transitions. [2024-11-09 06:12:18,052 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 5713 transitions. Word has length 27 [2024-11-09 06:12:18,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:18,053 INFO L471 AbstractCegarLoop]: Abstraction has 1316 states and 5713 transitions. [2024-11-09 06:12:18,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-09 06:12:18,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 5713 transitions. [2024-11-09 06:12:18,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 06:12:18,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:18,063 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] [2024-11-09 06:12:18,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:12:18,064 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 1 more)] === [2024-11-09 06:12:18,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:18,065 INFO L85 PathProgramCache]: Analyzing trace with hash -986216997, now seen corresponding path program 2 times [2024-11-09 06:12:18,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:18,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576542162] [2024-11-09 06:12:18,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:18,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:18,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:18,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:18,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576542162] [2024-11-09 06:12:18,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576542162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:18,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:18,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:18,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984137215] [2024-11-09 06:12:18,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:18,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:18,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:18,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:18,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:18,477 INFO L87 Difference]: Start difference. First operand 1316 states and 5713 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-09 06:12:18,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:18,937 INFO L93 Difference]: Finished difference Result 2089 states and 8507 transitions. [2024-11-09 06:12:18,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:18,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2024-11-09 06:12:18,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:18,958 INFO L225 Difference]: With dead ends: 2089 [2024-11-09 06:12:18,958 INFO L226 Difference]: Without dead ends: 2064 [2024-11-09 06:12:18,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:18,964 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 75 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:18,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 106 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:12:18,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2064 states. [2024-11-09 06:12:19,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2064 to 1336. [2024-11-09 06:12:19,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1335 states have (on average 4.316853932584269) internal successors, (5763), 1335 states have internal predecessors, (5763), 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) [2024-11-09 06:12:19,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 5763 transitions. [2024-11-09 06:12:19,045 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 5763 transitions. Word has length 27 [2024-11-09 06:12:19,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:19,046 INFO L471 AbstractCegarLoop]: Abstraction has 1336 states and 5763 transitions. [2024-11-09 06:12:19,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-09 06:12:19,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 5763 transitions. [2024-11-09 06:12:19,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 06:12:19,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:19,056 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] [2024-11-09 06:12:19,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:12:19,057 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 1 more)] === [2024-11-09 06:12:19,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:19,057 INFO L85 PathProgramCache]: Analyzing trace with hash -256155003, now seen corresponding path program 3 times [2024-11-09 06:12:19,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:19,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209672661] [2024-11-09 06:12:19,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:19,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:19,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:19,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:19,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209672661] [2024-11-09 06:12:19,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209672661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:19,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:19,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:19,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839459670] [2024-11-09 06:12:19,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:19,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:19,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:19,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:19,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:19,344 INFO L87 Difference]: Start difference. First operand 1336 states and 5763 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-09 06:12:19,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:19,720 INFO L93 Difference]: Finished difference Result 1819 states and 7338 transitions. [2024-11-09 06:12:19,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:19,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2024-11-09 06:12:19,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:19,737 INFO L225 Difference]: With dead ends: 1819 [2024-11-09 06:12:19,737 INFO L226 Difference]: Without dead ends: 1794 [2024-11-09 06:12:19,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:19,740 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 68 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:19,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 100 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:12:19,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2024-11-09 06:12:19,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 1360. [2024-11-09 06:12:19,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 4.305371596762325) internal successors, (5851), 1359 states have internal predecessors, (5851), 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) [2024-11-09 06:12:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 5851 transitions. [2024-11-09 06:12:19,819 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 5851 transitions. Word has length 27 [2024-11-09 06:12:19,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:19,820 INFO L471 AbstractCegarLoop]: Abstraction has 1360 states and 5851 transitions. [2024-11-09 06:12:19,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-09 06:12:19,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 5851 transitions. [2024-11-09 06:12:19,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 06:12:19,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:19,826 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] [2024-11-09 06:12:19,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:12:19,827 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 1 more)] === [2024-11-09 06:12:19,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:19,827 INFO L85 PathProgramCache]: Analyzing trace with hash 19543809, now seen corresponding path program 4 times [2024-11-09 06:12:19,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:19,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52982818] [2024-11-09 06:12:19,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:19,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:20,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:20,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:20,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52982818] [2024-11-09 06:12:20,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52982818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:20,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:20,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:20,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44145022] [2024-11-09 06:12:20,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:20,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:20,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:20,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:20,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:20,116 INFO L87 Difference]: Start difference. First operand 1360 states and 5851 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-09 06:12:20,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:20,497 INFO L93 Difference]: Finished difference Result 2029 states and 8225 transitions. [2024-11-09 06:12:20,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:20,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2024-11-09 06:12:20,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:20,515 INFO L225 Difference]: With dead ends: 2029 [2024-11-09 06:12:20,516 INFO L226 Difference]: Without dead ends: 2004 [2024-11-09 06:12:20,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:20,519 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 73 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:20,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 108 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:12:20,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2024-11-09 06:12:20,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1376. [2024-11-09 06:12:20,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1375 states have (on average 4.284363636363636) internal successors, (5891), 1375 states have internal predecessors, (5891), 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) [2024-11-09 06:12:20,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 5891 transitions. [2024-11-09 06:12:20,595 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 5891 transitions. Word has length 27 [2024-11-09 06:12:20,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:20,595 INFO L471 AbstractCegarLoop]: Abstraction has 1376 states and 5891 transitions. [2024-11-09 06:12:20,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-09 06:12:20,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 5891 transitions. [2024-11-09 06:12:20,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 06:12:20,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:20,602 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] [2024-11-09 06:12:20,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 06:12:20,603 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 1 more)] === [2024-11-09 06:12:20,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:20,603 INFO L85 PathProgramCache]: Analyzing trace with hash 936218587, now seen corresponding path program 5 times [2024-11-09 06:12:20,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:20,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989379733] [2024-11-09 06:12:20,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:20,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:20,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:20,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:20,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989379733] [2024-11-09 06:12:20,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989379733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:20,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:20,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:20,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438009224] [2024-11-09 06:12:20,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:20,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:20,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:20,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:20,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:20,854 INFO L87 Difference]: Start difference. First operand 1376 states and 5891 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-09 06:12:21,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:21,305 INFO L93 Difference]: Finished difference Result 2168 states and 8818 transitions. [2024-11-09 06:12:21,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:21,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2024-11-09 06:12:21,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:21,327 INFO L225 Difference]: With dead ends: 2168 [2024-11-09 06:12:21,328 INFO L226 Difference]: Without dead ends: 2143 [2024-11-09 06:12:21,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:21,333 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 74 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:21,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 109 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:12:21,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2024-11-09 06:12:21,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 1392. [2024-11-09 06:12:21,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 4.281092739036664) internal successors, (5955), 1391 states have internal predecessors, (5955), 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) [2024-11-09 06:12:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5955 transitions. [2024-11-09 06:12:21,426 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5955 transitions. Word has length 27 [2024-11-09 06:12:21,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:21,429 INFO L471 AbstractCegarLoop]: Abstraction has 1392 states and 5955 transitions. [2024-11-09 06:12:21,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-09 06:12:21,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5955 transitions. [2024-11-09 06:12:21,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 06:12:21,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:21,438 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:12:21,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 06:12:21,438 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 1 more)] === [2024-11-09 06:12:21,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:21,439 INFO L85 PathProgramCache]: Analyzing trace with hash 645025281, now seen corresponding path program 6 times [2024-11-09 06:12:21,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:21,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477419696] [2024-11-09 06:12:21,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:21,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:21,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:21,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477419696] [2024-11-09 06:12:21,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477419696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:21,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:21,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:21,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717229785] [2024-11-09 06:12:21,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:21,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:21,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:21,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:21,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:21,654 INFO L87 Difference]: Start difference. First operand 1392 states and 5955 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-09 06:12:22,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:22,074 INFO L93 Difference]: Finished difference Result 2228 states and 9060 transitions. [2024-11-09 06:12:22,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:22,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2024-11-09 06:12:22,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:22,094 INFO L225 Difference]: With dead ends: 2228 [2024-11-09 06:12:22,094 INFO L226 Difference]: Without dead ends: 2203 [2024-11-09 06:12:22,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:22,097 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 71 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:22,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 111 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:12:22,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2024-11-09 06:12:22,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 1392. [2024-11-09 06:12:22,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 4.281092739036664) internal successors, (5955), 1391 states have internal predecessors, (5955), 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) [2024-11-09 06:12:22,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5955 transitions. [2024-11-09 06:12:22,195 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5955 transitions. Word has length 27 [2024-11-09 06:12:22,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:22,196 INFO L471 AbstractCegarLoop]: Abstraction has 1392 states and 5955 transitions. [2024-11-09 06:12:22,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-09 06:12:22,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5955 transitions. [2024-11-09 06:12:22,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 06:12:22,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:22,201 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] [2024-11-09 06:12:22,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 06:12:22,202 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 1 more)] === [2024-11-09 06:12:22,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:22,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1088544703, now seen corresponding path program 1 times [2024-11-09 06:12:22,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:22,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978027994] [2024-11-09 06:12:22,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:22,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:22,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:22,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978027994] [2024-11-09 06:12:22,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978027994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:22,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:22,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:22,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460005426] [2024-11-09 06:12:22,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:22,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:22,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:22,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:22,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:22,385 INFO L87 Difference]: Start difference. First operand 1392 states and 5955 transitions. Second operand has 5 states, 5 states have (on average 5.8) 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) [2024-11-09 06:12:22,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:22,840 INFO L93 Difference]: Finished difference Result 2191 states and 8822 transitions. [2024-11-09 06:12:22,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:22,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) 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 [2024-11-09 06:12:22,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:22,869 INFO L225 Difference]: With dead ends: 2191 [2024-11-09 06:12:22,869 INFO L226 Difference]: Without dead ends: 2126 [2024-11-09 06:12:22,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:22,873 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 83 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:22,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 105 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:12:22,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2024-11-09 06:12:22,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1448. [2024-11-09 06:12:22,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 4.255010366275052) internal successors, (6157), 1447 states have internal predecessors, (6157), 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) [2024-11-09 06:12:22,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 6157 transitions. [2024-11-09 06:12:22,981 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 6157 transitions. Word has length 29 [2024-11-09 06:12:22,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:22,982 INFO L471 AbstractCegarLoop]: Abstraction has 1448 states and 6157 transitions. [2024-11-09 06:12:22,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) 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) [2024-11-09 06:12:22,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 6157 transitions. [2024-11-09 06:12:22,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 06:12:22,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:22,989 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] [2024-11-09 06:12:22,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 06:12:22,989 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 1 more)] === [2024-11-09 06:12:22,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:22,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1398688925, now seen corresponding path program 1 times [2024-11-09 06:12:22,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:22,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998793915] [2024-11-09 06:12:22,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:22,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:23,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:23,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:23,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998793915] [2024-11-09 06:12:23,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998793915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:23,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:23,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:23,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766351713] [2024-11-09 06:12:23,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:23,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:23,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:23,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:23,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:23,182 INFO L87 Difference]: Start difference. First operand 1448 states and 6157 transitions. Second operand has 5 states, 5 states have (on average 5.8) 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) [2024-11-09 06:12:23,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:23,551 INFO L93 Difference]: Finished difference Result 1951 states and 7811 transitions. [2024-11-09 06:12:23,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:23,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) 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 [2024-11-09 06:12:23,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:23,564 INFO L225 Difference]: With dead ends: 1951 [2024-11-09 06:12:23,564 INFO L226 Difference]: Without dead ends: 1852 [2024-11-09 06:12:23,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:23,566 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 55 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:23,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 102 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:12:23,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2024-11-09 06:12:23,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1448. [2024-11-09 06:12:23,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 4.245335176226676) internal successors, (6143), 1447 states have internal predecessors, (6143), 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) [2024-11-09 06:12:23,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 6143 transitions. [2024-11-09 06:12:23,655 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 6143 transitions. Word has length 29 [2024-11-09 06:12:23,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:23,655 INFO L471 AbstractCegarLoop]: Abstraction has 1448 states and 6143 transitions. [2024-11-09 06:12:23,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) 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) [2024-11-09 06:12:23,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 6143 transitions. [2024-11-09 06:12:23,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 06:12:23,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:23,661 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] [2024-11-09 06:12:23,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 06:12:23,662 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 1 more)] === [2024-11-09 06:12:23,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:23,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1017931101, now seen corresponding path program 2 times [2024-11-09 06:12:23,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:23,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781324563] [2024-11-09 06:12:23,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:23,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:23,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:23,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:23,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781324563] [2024-11-09 06:12:23,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781324563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:23,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:23,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:12:23,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403253044] [2024-11-09 06:12:23,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:23,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:12:23,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:23,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:12:23,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:12:23,887 INFO L87 Difference]: Start difference. First operand 1448 states and 6143 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 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) [2024-11-09 06:12:24,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:24,453 INFO L93 Difference]: Finished difference Result 3021 states and 12822 transitions. [2024-11-09 06:12:24,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:12:24,454 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 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 [2024-11-09 06:12:24,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:24,471 INFO L225 Difference]: With dead ends: 3021 [2024-11-09 06:12:24,471 INFO L226 Difference]: Without dead ends: 2510 [2024-11-09 06:12:24,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:12:24,474 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 236 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:24,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 34 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:12:24,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2024-11-09 06:12:24,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 2341. [2024-11-09 06:12:24,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2341 states, 2340 states have (on average 4.2585470085470085) internal successors, (9965), 2340 states have internal predecessors, (9965), 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) [2024-11-09 06:12:24,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2341 states to 2341 states and 9965 transitions. [2024-11-09 06:12:24,623 INFO L78 Accepts]: Start accepts. Automaton has 2341 states and 9965 transitions. Word has length 29 [2024-11-09 06:12:24,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:24,623 INFO L471 AbstractCegarLoop]: Abstraction has 2341 states and 9965 transitions. [2024-11-09 06:12:24,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 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) [2024-11-09 06:12:24,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2341 states and 9965 transitions. [2024-11-09 06:12:24,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 06:12:24,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:24,634 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] [2024-11-09 06:12:24,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 06:12:24,634 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 1 more)] === [2024-11-09 06:12:24,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:24,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1699928965, now seen corresponding path program 2 times [2024-11-09 06:12:24,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:24,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211391411] [2024-11-09 06:12:24,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:24,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:24,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:24,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:24,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211391411] [2024-11-09 06:12:24,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211391411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:24,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:24,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:24,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141941251] [2024-11-09 06:12:24,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:24,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:24,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:24,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:24,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:24,784 INFO L87 Difference]: Start difference. First operand 2341 states and 9965 transitions. Second operand has 5 states, 5 states have (on average 5.8) 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) [2024-11-09 06:12:25,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:25,312 INFO L93 Difference]: Finished difference Result 3546 states and 14358 transitions. [2024-11-09 06:12:25,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:25,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) 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 [2024-11-09 06:12:25,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:25,337 INFO L225 Difference]: With dead ends: 3546 [2024-11-09 06:12:25,337 INFO L226 Difference]: Without dead ends: 3477 [2024-11-09 06:12:25,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:25,339 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 79 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:25,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 109 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:12:25,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3477 states. [2024-11-09 06:12:25,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3477 to 2421. [2024-11-09 06:12:25,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2420 states have (on average 4.241735537190083) internal successors, (10265), 2420 states have internal predecessors, (10265), 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) [2024-11-09 06:12:25,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 10265 transitions. [2024-11-09 06:12:25,541 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 10265 transitions. Word has length 29 [2024-11-09 06:12:25,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:25,542 INFO L471 AbstractCegarLoop]: Abstraction has 2421 states and 10265 transitions. [2024-11-09 06:12:25,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) 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) [2024-11-09 06:12:25,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 10265 transitions. [2024-11-09 06:12:25,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 06:12:25,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:25,552 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] [2024-11-09 06:12:25,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 06:12:25,552 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:25,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:25,553 INFO L85 PathProgramCache]: Analyzing trace with hash 197327198, now seen corresponding path program 1 times [2024-11-09 06:12:25,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:25,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994977382] [2024-11-09 06:12:25,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:25,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:25,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:25,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:25,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994977382] [2024-11-09 06:12:25,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994977382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:25,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:25,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:25,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056607010] [2024-11-09 06:12:25,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:25,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:12:25,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:25,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:12:25,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:12:25,766 INFO L87 Difference]: Start difference. First operand 2421 states and 10265 transitions. 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) [2024-11-09 06:12:26,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:26,368 INFO L93 Difference]: Finished difference Result 4767 states and 20513 transitions. [2024-11-09 06:12:26,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:12:26,369 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 [2024-11-09 06:12:26,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:26,394 INFO L225 Difference]: With dead ends: 4767 [2024-11-09 06:12:26,394 INFO L226 Difference]: Without dead ends: 3938 [2024-11-09 06:12:26,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:12:26,397 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 127 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:26,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 36 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:12:26,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2024-11-09 06:12:26,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3700. [2024-11-09 06:12:26,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3700 states, 3699 states have (on average 4.3076507164098405) internal successors, (15934), 3699 states have internal predecessors, (15934), 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) [2024-11-09 06:12:26,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3700 states to 3700 states and 15934 transitions. [2024-11-09 06:12:26,689 INFO L78 Accepts]: Start accepts. Automaton has 3700 states and 15934 transitions. Word has length 29 [2024-11-09 06:12:26,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:26,690 INFO L471 AbstractCegarLoop]: Abstraction has 3700 states and 15934 transitions. [2024-11-09 06:12:26,690 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) [2024-11-09 06:12:26,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3700 states and 15934 transitions. [2024-11-09 06:12:26,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 06:12:26,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:26,712 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] [2024-11-09 06:12:26,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 06:12:26,712 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:26,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:26,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1027892839, now seen corresponding path program 3 times [2024-11-09 06:12:26,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:26,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170353304] [2024-11-09 06:12:26,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:26,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:26,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:26,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170353304] [2024-11-09 06:12:26,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170353304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:26,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:26,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:26,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491975748] [2024-11-09 06:12:26,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:26,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:26,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:26,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:26,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:26,891 INFO L87 Difference]: Start difference. First operand 3700 states and 15934 transitions. Second operand has 5 states, 5 states have (on average 5.8) 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) [2024-11-09 06:12:27,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:27,332 INFO L93 Difference]: Finished difference Result 4315 states and 17984 transitions. [2024-11-09 06:12:27,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:27,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) 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 [2024-11-09 06:12:27,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:27,361 INFO L225 Difference]: With dead ends: 4315 [2024-11-09 06:12:27,362 INFO L226 Difference]: Without dead ends: 4216 [2024-11-09 06:12:27,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:27,366 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 65 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:27,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 76 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:12:27,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4216 states. [2024-11-09 06:12:27,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4216 to 3700. [2024-11-09 06:12:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3700 states, 3699 states have (on average 4.301162476344958) internal successors, (15910), 3699 states have internal predecessors, (15910), 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) [2024-11-09 06:12:27,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3700 states to 3700 states and 15910 transitions. [2024-11-09 06:12:27,713 INFO L78 Accepts]: Start accepts. Automaton has 3700 states and 15910 transitions. Word has length 29 [2024-11-09 06:12:27,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:27,714 INFO L471 AbstractCegarLoop]: Abstraction has 3700 states and 15910 transitions. [2024-11-09 06:12:27,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) 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) [2024-11-09 06:12:27,715 INFO L276 IsEmpty]: Start isEmpty. Operand 3700 states and 15910 transitions. [2024-11-09 06:12:27,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 06:12:27,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:27,726 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] [2024-11-09 06:12:27,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 06:12:27,727 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:27,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:27,727 INFO L85 PathProgramCache]: Analyzing trace with hash 688377507, now seen corresponding path program 4 times [2024-11-09 06:12:27,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:27,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013473417] [2024-11-09 06:12:27,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:27,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:27,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:27,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:27,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013473417] [2024-11-09 06:12:27,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013473417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:27,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:27,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:27,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018235896] [2024-11-09 06:12:27,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:27,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:27,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:27,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:27,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:27,880 INFO L87 Difference]: Start difference. First operand 3700 states and 15910 transitions. Second operand has 5 states, 5 states have (on average 5.8) 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) [2024-11-09 06:12:28,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:28,463 INFO L93 Difference]: Finished difference Result 4717 states and 19570 transitions. [2024-11-09 06:12:28,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:28,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) 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 [2024-11-09 06:12:28,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:28,492 INFO L225 Difference]: With dead ends: 4717 [2024-11-09 06:12:28,493 INFO L226 Difference]: Without dead ends: 4648 [2024-11-09 06:12:28,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:28,496 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 80 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:28,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 108 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:12:28,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4648 states. [2024-11-09 06:12:28,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4648 to 3764. [2024-11-09 06:12:28,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 4.29178846664895) internal successors, (16150), 3763 states have internal predecessors, (16150), 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) [2024-11-09 06:12:28,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 16150 transitions. [2024-11-09 06:12:28,834 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 16150 transitions. Word has length 29 [2024-11-09 06:12:28,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:28,834 INFO L471 AbstractCegarLoop]: Abstraction has 3764 states and 16150 transitions. [2024-11-09 06:12:28,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) 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) [2024-11-09 06:12:28,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 16150 transitions. [2024-11-09 06:12:28,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 06:12:28,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:28,853 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] [2024-11-09 06:12:28,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 06:12:28,853 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:28,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:28,854 INFO L85 PathProgramCache]: Analyzing trace with hash -710376515, now seen corresponding path program 5 times [2024-11-09 06:12:28,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:28,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426381821] [2024-11-09 06:12:28,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:28,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:29,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:29,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426381821] [2024-11-09 06:12:29,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426381821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:29,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:29,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:29,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277614096] [2024-11-09 06:12:29,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:29,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:29,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:29,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:29,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:29,012 INFO L87 Difference]: Start difference. First operand 3764 states and 16150 transitions. Second operand has 5 states, 5 states have (on average 5.8) 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) [2024-11-09 06:12:29,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:29,692 INFO L93 Difference]: Finished difference Result 5049 states and 20757 transitions. [2024-11-09 06:12:29,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:29,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) 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 [2024-11-09 06:12:29,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:29,744 INFO L225 Difference]: With dead ends: 5049 [2024-11-09 06:12:29,744 INFO L226 Difference]: Without dead ends: 4980 [2024-11-09 06:12:29,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:29,748 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 83 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:29,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 110 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:12:29,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4980 states. [2024-11-09 06:12:30,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4980 to 3764. [2024-11-09 06:12:30,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 4.29178846664895) internal successors, (16150), 3763 states have internal predecessors, (16150), 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) [2024-11-09 06:12:30,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 16150 transitions. [2024-11-09 06:12:30,155 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 16150 transitions. Word has length 29 [2024-11-09 06:12:30,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:30,155 INFO L471 AbstractCegarLoop]: Abstraction has 3764 states and 16150 transitions. [2024-11-09 06:12:30,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) 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) [2024-11-09 06:12:30,156 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 16150 transitions. [2024-11-09 06:12:30,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 06:12:30,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:30,175 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] [2024-11-09 06:12:30,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 06:12:30,175 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:30,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:30,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1001569821, now seen corresponding path program 6 times [2024-11-09 06:12:30,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:30,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689228346] [2024-11-09 06:12:30,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:30,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:30,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:30,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:30,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689228346] [2024-11-09 06:12:30,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689228346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:30,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:30,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:30,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343254236] [2024-11-09 06:12:30,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:30,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:30,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:30,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:30,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:30,359 INFO L87 Difference]: Start difference. First operand 3764 states and 16150 transitions. Second operand has 5 states, 5 states have (on average 5.8) 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) [2024-11-09 06:12:30,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:30,852 INFO L93 Difference]: Finished difference Result 5157 states and 21177 transitions. [2024-11-09 06:12:30,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:30,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) 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 [2024-11-09 06:12:30,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:30,884 INFO L225 Difference]: With dead ends: 5157 [2024-11-09 06:12:30,884 INFO L226 Difference]: Without dead ends: 5088 [2024-11-09 06:12:30,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:30,888 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 78 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:30,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 114 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:12:30,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5088 states. [2024-11-09 06:12:31,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5088 to 3700. [2024-11-09 06:12:31,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3700 states, 3699 states have (on average 4.29683698296837) internal successors, (15894), 3699 states have internal predecessors, (15894), 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) [2024-11-09 06:12:31,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3700 states to 3700 states and 15894 transitions. [2024-11-09 06:12:31,213 INFO L78 Accepts]: Start accepts. Automaton has 3700 states and 15894 transitions. Word has length 29 [2024-11-09 06:12:31,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:31,213 INFO L471 AbstractCegarLoop]: Abstraction has 3700 states and 15894 transitions. [2024-11-09 06:12:31,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) 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) [2024-11-09 06:12:31,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3700 states and 15894 transitions. [2024-11-09 06:12:31,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 06:12:31,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:31,228 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:12:31,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 06:12:31,229 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:31,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:31,230 INFO L85 PathProgramCache]: Analyzing trace with hash 849765530, now seen corresponding path program 1 times [2024-11-09 06:12:31,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:31,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744998041] [2024-11-09 06:12:31,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:31,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:31,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:31,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:31,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744998041] [2024-11-09 06:12:31,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744998041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:31,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:31,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:31,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431752594] [2024-11-09 06:12:31,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:31,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:31,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:31,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:31,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:31,355 INFO L87 Difference]: Start difference. First operand 3700 states and 15894 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:31,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:31,767 INFO L93 Difference]: Finished difference Result 5238 states and 21548 transitions. [2024-11-09 06:12:31,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:12:31,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 31 [2024-11-09 06:12:31,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:31,787 INFO L225 Difference]: With dead ends: 5238 [2024-11-09 06:12:31,787 INFO L226 Difference]: Without dead ends: 3341 [2024-11-09 06:12:31,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:12:31,792 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 61 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:31,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 39 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:12:31,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3341 states. [2024-11-09 06:12:31,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3341 to 2840. [2024-11-09 06:12:31,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2840 states, 2839 states have (on average 4.19196900317013) internal successors, (11901), 2839 states have internal predecessors, (11901), 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) [2024-11-09 06:12:31,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 11901 transitions. [2024-11-09 06:12:31,983 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 11901 transitions. Word has length 31 [2024-11-09 06:12:31,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:31,984 INFO L471 AbstractCegarLoop]: Abstraction has 2840 states and 11901 transitions. [2024-11-09 06:12:31,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:31,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 11901 transitions. [2024-11-09 06:12:31,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 06:12:31,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:31,994 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:12:31,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 06:12:31,994 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:31,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:31,995 INFO L85 PathProgramCache]: Analyzing trace with hash -155036136, now seen corresponding path program 1 times [2024-11-09 06:12:31,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:31,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012468806] [2024-11-09 06:12:31,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:31,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:32,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:32,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:32,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012468806] [2024-11-09 06:12:32,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012468806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:32,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:32,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:12:32,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152887923] [2024-11-09 06:12:32,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:32,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:32,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:32,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:32,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:32,104 INFO L87 Difference]: Start difference. First operand 2840 states and 11901 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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) [2024-11-09 06:12:32,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:32,424 INFO L93 Difference]: Finished difference Result 4120 states and 16549 transitions. [2024-11-09 06:12:32,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:12:32,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2024-11-09 06:12:32,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:32,439 INFO L225 Difference]: With dead ends: 4120 [2024-11-09 06:12:32,439 INFO L226 Difference]: Without dead ends: 2588 [2024-11-09 06:12:32,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:12:32,444 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 64 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:32,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 45 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:12:32,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2024-11-09 06:12:32,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 2135. [2024-11-09 06:12:32,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2135 states, 2134 states have (on average 4.116213683223992) internal successors, (8784), 2134 states have internal predecessors, (8784), 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) [2024-11-09 06:12:32,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 8784 transitions. [2024-11-09 06:12:32,625 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 8784 transitions. Word has length 31 [2024-11-09 06:12:32,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:32,625 INFO L471 AbstractCegarLoop]: Abstraction has 2135 states and 8784 transitions. [2024-11-09 06:12:32,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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) [2024-11-09 06:12:32,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 8784 transitions. [2024-11-09 06:12:32,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 06:12:32,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:32,632 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:12:32,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 06:12:32,633 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:32,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:32,633 INFO L85 PathProgramCache]: Analyzing trace with hash 327054978, now seen corresponding path program 1 times [2024-11-09 06:12:32,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:32,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177104846] [2024-11-09 06:12:32,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:32,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:32,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:12:32,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:32,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177104846] [2024-11-09 06:12:32,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177104846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:32,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:32,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:32,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121186701] [2024-11-09 06:12:32,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:32,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:32,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:32,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:32,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:32,792 INFO L87 Difference]: Start difference. First operand 2135 states and 8784 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:33,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:33,243 INFO L93 Difference]: Finished difference Result 2848 states and 11318 transitions. [2024-11-09 06:12:33,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:33,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 31 [2024-11-09 06:12:33,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:33,253 INFO L225 Difference]: With dead ends: 2848 [2024-11-09 06:12:33,254 INFO L226 Difference]: Without dead ends: 2763 [2024-11-09 06:12:33,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:33,256 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 71 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:33,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 106 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:12:33,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2024-11-09 06:12:33,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2135. [2024-11-09 06:12:33,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2135 states, 2134 states have (on average 4.111527647610122) internal successors, (8774), 2134 states have internal predecessors, (8774), 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) [2024-11-09 06:12:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 8774 transitions. [2024-11-09 06:12:33,397 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 8774 transitions. Word has length 31 [2024-11-09 06:12:33,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:33,398 INFO L471 AbstractCegarLoop]: Abstraction has 2135 states and 8774 transitions. [2024-11-09 06:12:33,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:33,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 8774 transitions. [2024-11-09 06:12:33,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 06:12:33,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:33,404 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:12:33,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 06:12:33,404 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:33,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:33,404 INFO L85 PathProgramCache]: Analyzing trace with hash 29248744, now seen corresponding path program 2 times [2024-11-09 06:12:33,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:33,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27568726] [2024-11-09 06:12:33,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:33,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:33,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:12:33,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:33,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27568726] [2024-11-09 06:12:33,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27568726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:33,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:33,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:33,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243272703] [2024-11-09 06:12:33,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:33,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:33,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:33,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:33,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:33,534 INFO L87 Difference]: Start difference. First operand 2135 states and 8774 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:34,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:34,001 INFO L93 Difference]: Finished difference Result 2842 states and 11279 transitions. [2024-11-09 06:12:34,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:34,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 31 [2024-11-09 06:12:34,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:34,013 INFO L225 Difference]: With dead ends: 2842 [2024-11-09 06:12:34,013 INFO L226 Difference]: Without dead ends: 2777 [2024-11-09 06:12:34,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:34,015 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 87 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:34,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 106 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:12:34,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2024-11-09 06:12:34,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 2135. [2024-11-09 06:12:34,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2135 states, 2134 states have (on average 4.111527647610122) internal successors, (8774), 2134 states have internal predecessors, (8774), 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) [2024-11-09 06:12:34,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 8774 transitions. [2024-11-09 06:12:34,200 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 8774 transitions. Word has length 31 [2024-11-09 06:12:34,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:34,201 INFO L471 AbstractCegarLoop]: Abstraction has 2135 states and 8774 transitions. [2024-11-09 06:12:34,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:34,201 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 8774 transitions. [2024-11-09 06:12:34,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 06:12:34,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:34,208 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:12:34,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 06:12:34,208 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:34,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:34,209 INFO L85 PathProgramCache]: Analyzing trace with hash 304947556, now seen corresponding path program 3 times [2024-11-09 06:12:34,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:34,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084347655] [2024-11-09 06:12:34,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:34,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:34,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:12:34,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:34,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084347655] [2024-11-09 06:12:34,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084347655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:34,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:34,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:34,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952361524] [2024-11-09 06:12:34,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:34,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:34,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:34,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:34,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:34,372 INFO L87 Difference]: Start difference. First operand 2135 states and 8774 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:35,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:35,139 INFO L93 Difference]: Finished difference Result 3428 states and 13672 transitions. [2024-11-09 06:12:35,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:12:35,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 31 [2024-11-09 06:12:35,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:35,155 INFO L225 Difference]: With dead ends: 3428 [2024-11-09 06:12:35,155 INFO L226 Difference]: Without dead ends: 3315 [2024-11-09 06:12:35,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:35,157 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 107 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:35,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 111 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:12:35,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3315 states. [2024-11-09 06:12:35,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3315 to 2167. [2024-11-09 06:12:35,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 2166 states have (on average 4.095106186518929) internal successors, (8870), 2166 states have internal predecessors, (8870), 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) [2024-11-09 06:12:35,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 8870 transitions. [2024-11-09 06:12:35,353 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 8870 transitions. Word has length 31 [2024-11-09 06:12:35,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:35,353 INFO L471 AbstractCegarLoop]: Abstraction has 2167 states and 8870 transitions. [2024-11-09 06:12:35,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:35,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 8870 transitions. [2024-11-09 06:12:35,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 06:12:35,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:35,360 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:12:35,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 06:12:35,361 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:35,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:35,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1164752770, now seen corresponding path program 4 times [2024-11-09 06:12:35,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:35,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799646771] [2024-11-09 06:12:35,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:35,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:12:35,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:35,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799646771] [2024-11-09 06:12:35,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799646771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:35,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:35,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:35,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918962553] [2024-11-09 06:12:35,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:35,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:35,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:35,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:35,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:35,502 INFO L87 Difference]: Start difference. First operand 2167 states and 8870 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:36,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:36,097 INFO L93 Difference]: Finished difference Result 3431 states and 13372 transitions. [2024-11-09 06:12:36,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:12:36,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 31 [2024-11-09 06:12:36,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:36,115 INFO L225 Difference]: With dead ends: 3431 [2024-11-09 06:12:36,115 INFO L226 Difference]: Without dead ends: 3318 [2024-11-09 06:12:36,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:36,118 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 97 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:36,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 113 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:12:36,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3318 states. [2024-11-09 06:12:36,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3318 to 2199. [2024-11-09 06:12:36,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2199 states, 2198 states have (on average 4.082802547770701) internal successors, (8974), 2198 states have internal predecessors, (8974), 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) [2024-11-09 06:12:36,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 8974 transitions. [2024-11-09 06:12:36,339 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 8974 transitions. Word has length 31 [2024-11-09 06:12:36,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:36,339 INFO L471 AbstractCegarLoop]: Abstraction has 2199 states and 8974 transitions. [2024-11-09 06:12:36,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:36,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 8974 transitions. [2024-11-09 06:12:36,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 06:12:36,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:36,346 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:12:36,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 06:12:36,346 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:36,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:36,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1147699292, now seen corresponding path program 5 times [2024-11-09 06:12:36,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:36,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025734153] [2024-11-09 06:12:36,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:36,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:36,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:12:36,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:36,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025734153] [2024-11-09 06:12:36,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025734153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:36,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:36,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:36,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812673520] [2024-11-09 06:12:36,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:36,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:36,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:36,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:36,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:36,480 INFO L87 Difference]: Start difference. First operand 2199 states and 8974 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:36,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:36,884 INFO L93 Difference]: Finished difference Result 2581 states and 10222 transitions. [2024-11-09 06:12:36,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:36,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 31 [2024-11-09 06:12:36,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:36,900 INFO L225 Difference]: With dead ends: 2581 [2024-11-09 06:12:36,900 INFO L226 Difference]: Without dead ends: 2480 [2024-11-09 06:12:36,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:36,902 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 57 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:36,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 69 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:12:36,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2024-11-09 06:12:37,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2183. [2024-11-09 06:12:37,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2183 states, 2182 states have (on average 4.087076076993584) internal successors, (8918), 2182 states have internal predecessors, (8918), 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) [2024-11-09 06:12:37,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 8918 transitions. [2024-11-09 06:12:37,063 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 8918 transitions. Word has length 31 [2024-11-09 06:12:37,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:37,064 INFO L471 AbstractCegarLoop]: Abstraction has 2183 states and 8918 transitions. [2024-11-09 06:12:37,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:37,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 8918 transitions. [2024-11-09 06:12:37,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 06:12:37,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:37,071 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:12:37,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 06:12:37,071 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:37,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:37,072 INFO L85 PathProgramCache]: Analyzing trace with hash 590928282, now seen corresponding path program 1 times [2024-11-09 06:12:37,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:37,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180188493] [2024-11-09 06:12:37,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:37,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:12:37,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:37,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180188493] [2024-11-09 06:12:37,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180188493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:37,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:37,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:37,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190778885] [2024-11-09 06:12:37,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:37,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:37,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:37,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:37,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:37,192 INFO L87 Difference]: Start difference. First operand 2183 states and 8918 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:37,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:37,700 INFO L93 Difference]: Finished difference Result 2780 states and 11022 transitions. [2024-11-09 06:12:37,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:37,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 31 [2024-11-09 06:12:37,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:37,715 INFO L225 Difference]: With dead ends: 2780 [2024-11-09 06:12:37,715 INFO L226 Difference]: Without dead ends: 2723 [2024-11-09 06:12:37,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:37,718 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 88 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:37,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 106 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:12:37,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2024-11-09 06:12:37,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2231. [2024-11-09 06:12:37,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2231 states, 2230 states have (on average 4.076233183856503) internal successors, (9090), 2230 states have internal predecessors, (9090), 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) [2024-11-09 06:12:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 9090 transitions. [2024-11-09 06:12:37,862 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 9090 transitions. Word has length 31 [2024-11-09 06:12:37,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:37,862 INFO L471 AbstractCegarLoop]: Abstraction has 2231 states and 9090 transitions. [2024-11-09 06:12:37,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:37,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 9090 transitions. [2024-11-09 06:12:37,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 06:12:37,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:37,867 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:12:37,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 06:12:37,867 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:37,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:37,867 INFO L85 PathProgramCache]: Analyzing trace with hash -719461772, now seen corresponding path program 2 times [2024-11-09 06:12:37,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:37,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879099210] [2024-11-09 06:12:37,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:37,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:12:38,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:38,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879099210] [2024-11-09 06:12:38,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879099210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:38,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:38,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:38,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113966781] [2024-11-09 06:12:38,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:38,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:38,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:38,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:38,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:38,009 INFO L87 Difference]: Start difference. First operand 2231 states and 9090 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:38,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:38,621 INFO L93 Difference]: Finished difference Result 3614 states and 14253 transitions. [2024-11-09 06:12:38,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:12:38,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 31 [2024-11-09 06:12:38,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:38,641 INFO L225 Difference]: With dead ends: 3614 [2024-11-09 06:12:38,642 INFO L226 Difference]: Without dead ends: 3505 [2024-11-09 06:12:38,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:38,645 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 105 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:38,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 113 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:12:38,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3505 states. [2024-11-09 06:12:38,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3505 to 2263. [2024-11-09 06:12:38,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 4.060123784261715) internal successors, (9184), 2262 states have internal predecessors, (9184), 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) [2024-11-09 06:12:38,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 9184 transitions. [2024-11-09 06:12:38,822 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 9184 transitions. Word has length 31 [2024-11-09 06:12:38,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:38,822 INFO L471 AbstractCegarLoop]: Abstraction has 2263 states and 9184 transitions. [2024-11-09 06:12:38,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:38,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 9184 transitions. [2024-11-09 06:12:38,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 06:12:38,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:38,826 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:12:38,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-09 06:12:38,827 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:38,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:38,827 INFO L85 PathProgramCache]: Analyzing trace with hash -234874658, now seen corresponding path program 3 times [2024-11-09 06:12:38,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:38,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487513141] [2024-11-09 06:12:38,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:38,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:38,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:12:38,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:38,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487513141] [2024-11-09 06:12:38,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487513141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:38,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:38,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:38,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348633118] [2024-11-09 06:12:38,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:38,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:38,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:38,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:38,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:38,952 INFO L87 Difference]: Start difference. First operand 2263 states and 9184 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:39,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:39,464 INFO L93 Difference]: Finished difference Result 2882 states and 11300 transitions. [2024-11-09 06:12:39,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:39,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 31 [2024-11-09 06:12:39,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:39,482 INFO L225 Difference]: With dead ends: 2882 [2024-11-09 06:12:39,482 INFO L226 Difference]: Without dead ends: 2825 [2024-11-09 06:12:39,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:39,485 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 79 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:39,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 109 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:12:39,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2024-11-09 06:12:39,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2263. [2024-11-09 06:12:39,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 4.060123784261715) internal successors, (9184), 2262 states have internal predecessors, (9184), 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) [2024-11-09 06:12:39,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 9184 transitions. [2024-11-09 06:12:39,645 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 9184 transitions. Word has length 31 [2024-11-09 06:12:39,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:39,645 INFO L471 AbstractCegarLoop]: Abstraction has 2263 states and 9184 transitions. [2024-11-09 06:12:39,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:39,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 9184 transitions. [2024-11-09 06:12:39,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 06:12:39,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:39,650 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:12:39,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-09 06:12:39,671 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:39,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:39,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1648762368, now seen corresponding path program 4 times [2024-11-09 06:12:39,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:39,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834069774] [2024-11-09 06:12:39,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:39,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:39,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:12:39,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:39,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834069774] [2024-11-09 06:12:39,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834069774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:39,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:39,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:39,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600252728] [2024-11-09 06:12:39,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:39,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:39,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:39,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:39,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:39,795 INFO L87 Difference]: Start difference. First operand 2263 states and 9184 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:40,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:40,348 INFO L93 Difference]: Finished difference Result 2795 states and 11041 transitions. [2024-11-09 06:12:40,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:40,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 31 [2024-11-09 06:12:40,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:40,358 INFO L225 Difference]: With dead ends: 2795 [2024-11-09 06:12:40,358 INFO L226 Difference]: Without dead ends: 2722 [2024-11-09 06:12:40,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:40,360 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 66 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:40,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 106 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:12:40,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2722 states. [2024-11-09 06:12:40,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2722 to 2263. [2024-11-09 06:12:40,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 4.05658709106985) internal successors, (9176), 2262 states have internal predecessors, (9176), 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) [2024-11-09 06:12:40,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 9176 transitions. [2024-11-09 06:12:40,571 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 9176 transitions. Word has length 31 [2024-11-09 06:12:40,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:40,571 INFO L471 AbstractCegarLoop]: Abstraction has 2263 states and 9176 transitions. [2024-11-09 06:12:40,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:40,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 9176 transitions. [2024-11-09 06:12:40,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 06:12:40,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:40,578 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:12:40,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-09 06:12:40,579 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:40,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:40,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2104928346, now seen corresponding path program 5 times [2024-11-09 06:12:40,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:40,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658946469] [2024-11-09 06:12:40,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:40,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:40,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:12:40,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:40,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658946469] [2024-11-09 06:12:40,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658946469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:40,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:40,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:40,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324691020] [2024-11-09 06:12:40,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:40,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:40,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:40,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:40,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:40,711 INFO L87 Difference]: Start difference. First operand 2263 states and 9176 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:41,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:41,189 INFO L93 Difference]: Finished difference Result 2710 states and 10588 transitions. [2024-11-09 06:12:41,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:41,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 31 [2024-11-09 06:12:41,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:41,204 INFO L225 Difference]: With dead ends: 2710 [2024-11-09 06:12:41,204 INFO L226 Difference]: Without dead ends: 2637 [2024-11-09 06:12:41,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:41,206 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 58 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:41,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 101 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:12:41,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2024-11-09 06:12:41,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 2279. [2024-11-09 06:12:41,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 2278 states have (on average 4.0421422300263385) internal successors, (9208), 2278 states have internal predecessors, (9208), 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) [2024-11-09 06:12:41,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 9208 transitions. [2024-11-09 06:12:41,407 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 9208 transitions. Word has length 31 [2024-11-09 06:12:41,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:41,407 INFO L471 AbstractCegarLoop]: Abstraction has 2279 states and 9208 transitions. [2024-11-09 06:12:41,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:41,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 9208 transitions. [2024-11-09 06:12:41,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 06:12:41,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:41,412 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:12:41,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-09 06:12:41,412 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:41,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:41,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1451538624, now seen corresponding path program 6 times [2024-11-09 06:12:41,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:41,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786530965] [2024-11-09 06:12:41,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:41,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:41,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:12:41,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:41,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786530965] [2024-11-09 06:12:41,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786530965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:41,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:41,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:41,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887225967] [2024-11-09 06:12:41,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:41,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:41,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:41,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:41,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:41,533 INFO L87 Difference]: Start difference. First operand 2279 states and 9208 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:42,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:42,490 INFO L93 Difference]: Finished difference Result 3905 states and 15333 transitions. [2024-11-09 06:12:42,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:12:42,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 31 [2024-11-09 06:12:42,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:42,507 INFO L225 Difference]: With dead ends: 3905 [2024-11-09 06:12:42,507 INFO L226 Difference]: Without dead ends: 3780 [2024-11-09 06:12:42,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:42,509 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 100 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:42,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 120 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:12:42,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3780 states. [2024-11-09 06:12:42,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3780 to 2263. [2024-11-09 06:12:42,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 4.0495137046861185) internal successors, (9160), 2262 states have internal predecessors, (9160), 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) [2024-11-09 06:12:42,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 9160 transitions. [2024-11-09 06:12:42,813 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 9160 transitions. Word has length 31 [2024-11-09 06:12:42,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:42,813 INFO L471 AbstractCegarLoop]: Abstraction has 2263 states and 9160 transitions. [2024-11-09 06:12:42,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-09 06:12:42,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 9160 transitions. [2024-11-09 06:12:42,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 06:12:42,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:42,819 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] [2024-11-09 06:12:42,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-09 06:12:42,820 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:42,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:42,820 INFO L85 PathProgramCache]: Analyzing trace with hash -2007836410, now seen corresponding path program 1 times [2024-11-09 06:12:42,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:42,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847415373] [2024-11-09 06:12:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:42,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:12:42,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:42,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847415373] [2024-11-09 06:12:42,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847415373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:42,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:42,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:12:42,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095236966] [2024-11-09 06:12:42,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:42,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:12:42,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:42,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:12:42,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:12:42,899 INFO L87 Difference]: Start difference. First operand 2263 states and 9160 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2024-11-09 06:12:43,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:43,458 INFO L93 Difference]: Finished difference Result 3383 states and 13135 transitions. [2024-11-09 06:12:43,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:43,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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 [2024-11-09 06:12:43,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:43,473 INFO L225 Difference]: With dead ends: 3383 [2024-11-09 06:12:43,473 INFO L226 Difference]: Without dead ends: 2964 [2024-11-09 06:12:43,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:43,480 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 85 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:43,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 85 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:12:43,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2024-11-09 06:12:43,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2263. [2024-11-09 06:12:43,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 4.039787798408488) internal successors, (9138), 2262 states have internal predecessors, (9138), 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) [2024-11-09 06:12:43,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 9138 transitions. [2024-11-09 06:12:43,667 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 9138 transitions. Word has length 33 [2024-11-09 06:12:43,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:43,668 INFO L471 AbstractCegarLoop]: Abstraction has 2263 states and 9138 transitions. [2024-11-09 06:12:43,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2024-11-09 06:12:43,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 9138 transitions. [2024-11-09 06:12:43,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 06:12:43,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:43,675 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] [2024-11-09 06:12:43,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-09 06:12:43,675 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:43,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:43,676 INFO L85 PathProgramCache]: Analyzing trace with hash 843926410, now seen corresponding path program 2 times [2024-11-09 06:12:43,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:43,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300367295] [2024-11-09 06:12:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:43,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:43,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:12:43,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:43,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300367295] [2024-11-09 06:12:43,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300367295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:43,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:43,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:12:43,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865742063] [2024-11-09 06:12:43,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:43,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:12:43,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:43,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:12:43,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:12:43,755 INFO L87 Difference]: Start difference. First operand 2263 states and 9138 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2024-11-09 06:12:44,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:44,393 INFO L93 Difference]: Finished difference Result 3361 states and 13052 transitions. [2024-11-09 06:12:44,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:44,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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 [2024-11-09 06:12:44,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:44,409 INFO L225 Difference]: With dead ends: 3361 [2024-11-09 06:12:44,409 INFO L226 Difference]: Without dead ends: 2936 [2024-11-09 06:12:44,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:44,411 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 90 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:44,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 84 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:12:44,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2024-11-09 06:12:44,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 2231. [2024-11-09 06:12:44,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2231 states, 2230 states have (on average 4.04932735426009) internal successors, (9030), 2230 states have internal predecessors, (9030), 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) [2024-11-09 06:12:44,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 9030 transitions. [2024-11-09 06:12:44,635 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 9030 transitions. Word has length 33 [2024-11-09 06:12:44,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:44,635 INFO L471 AbstractCegarLoop]: Abstraction has 2231 states and 9030 transitions. [2024-11-09 06:12:44,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2024-11-09 06:12:44,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 9030 transitions. [2024-11-09 06:12:44,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 06:12:44,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:44,639 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] [2024-11-09 06:12:44,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-09 06:12:44,640 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:44,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:44,640 INFO L85 PathProgramCache]: Analyzing trace with hash 422986762, now seen corresponding path program 3 times [2024-11-09 06:12:44,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:44,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800086322] [2024-11-09 06:12:44,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:44,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:44,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:12:44,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:44,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800086322] [2024-11-09 06:12:44,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800086322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:44,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:44,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:44,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56107405] [2024-11-09 06:12:44,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:44,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:44,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:44,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:44,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:44,730 INFO L87 Difference]: Start difference. First operand 2231 states and 9030 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) [2024-11-09 06:12:45,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:45,202 INFO L93 Difference]: Finished difference Result 2820 states and 11073 transitions. [2024-11-09 06:12:45,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:45,202 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 [2024-11-09 06:12:45,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:45,212 INFO L225 Difference]: With dead ends: 2820 [2024-11-09 06:12:45,212 INFO L226 Difference]: Without dead ends: 2545 [2024-11-09 06:12:45,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:45,214 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 79 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:45,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 106 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:12:45,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2024-11-09 06:12:45,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 2175. [2024-11-09 06:12:45,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2175 states, 2174 states have (on average 4.027598896044158) internal successors, (8756), 2174 states have internal predecessors, (8756), 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) [2024-11-09 06:12:45,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 8756 transitions. [2024-11-09 06:12:45,348 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 8756 transitions. Word has length 33 [2024-11-09 06:12:45,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:45,348 INFO L471 AbstractCegarLoop]: Abstraction has 2175 states and 8756 transitions. [2024-11-09 06:12:45,348 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) [2024-11-09 06:12:45,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 8756 transitions. [2024-11-09 06:12:45,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 06:12:45,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:45,352 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] [2024-11-09 06:12:45,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-09 06:12:45,353 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:45,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:45,353 INFO L85 PathProgramCache]: Analyzing trace with hash 83471430, now seen corresponding path program 4 times [2024-11-09 06:12:45,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:45,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703590764] [2024-11-09 06:12:45,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:45,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:45,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:12:45,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:45,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703590764] [2024-11-09 06:12:45,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703590764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:45,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:45,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:45,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063537299] [2024-11-09 06:12:45,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:45,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:45,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:45,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:45,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:45,455 INFO L87 Difference]: Start difference. First operand 2175 states and 8756 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) [2024-11-09 06:12:46,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:46,044 INFO L93 Difference]: Finished difference Result 3354 states and 13409 transitions. [2024-11-09 06:12:46,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:12:46,045 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 [2024-11-09 06:12:46,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:46,054 INFO L225 Difference]: With dead ends: 3354 [2024-11-09 06:12:46,054 INFO L226 Difference]: Without dead ends: 2949 [2024-11-09 06:12:46,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:46,056 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 112 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:46,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 102 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:12:46,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2024-11-09 06:12:46,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 2167. [2024-11-09 06:12:46,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 2166 states have (on average 4.0794090489381345) internal successors, (8836), 2166 states have internal predecessors, (8836), 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) [2024-11-09 06:12:46,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 8836 transitions. [2024-11-09 06:12:46,201 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 8836 transitions. Word has length 33 [2024-11-09 06:12:46,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:46,201 INFO L471 AbstractCegarLoop]: Abstraction has 2167 states and 8836 transitions. [2024-11-09 06:12:46,201 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) [2024-11-09 06:12:46,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 8836 transitions. [2024-11-09 06:12:46,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 06:12:46,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:46,207 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] [2024-11-09 06:12:46,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-09 06:12:46,208 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:46,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:46,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1157774402, now seen corresponding path program 5 times [2024-11-09 06:12:46,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:46,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607953640] [2024-11-09 06:12:46,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:46,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:46,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:12:46,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:46,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607953640] [2024-11-09 06:12:46,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607953640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:46,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:46,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:46,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609843227] [2024-11-09 06:12:46,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:46,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:46,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:46,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:46,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:46,312 INFO L87 Difference]: Start difference. First operand 2167 states and 8836 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) [2024-11-09 06:12:46,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:46,926 INFO L93 Difference]: Finished difference Result 2815 states and 11278 transitions. [2024-11-09 06:12:46,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:12:46,926 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 [2024-11-09 06:12:46,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:46,941 INFO L225 Difference]: With dead ends: 2815 [2024-11-09 06:12:46,941 INFO L226 Difference]: Without dead ends: 2482 [2024-11-09 06:12:46,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:46,944 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 111 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:46,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 99 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:12:46,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2024-11-09 06:12:47,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 1879. [2024-11-09 06:12:47,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1879 states, 1878 states have (on average 4.014909478168264) internal successors, (7540), 1878 states have internal predecessors, (7540), 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) [2024-11-09 06:12:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 7540 transitions. [2024-11-09 06:12:47,148 INFO L78 Accepts]: Start accepts. Automaton has 1879 states and 7540 transitions. Word has length 33 [2024-11-09 06:12:47,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:47,148 INFO L471 AbstractCegarLoop]: Abstraction has 1879 states and 7540 transitions. [2024-11-09 06:12:47,148 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) [2024-11-09 06:12:47,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 7540 transitions. [2024-11-09 06:12:47,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 06:12:47,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:47,153 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] [2024-11-09 06:12:47,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-09 06:12:47,154 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:47,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:47,154 INFO L85 PathProgramCache]: Analyzing trace with hash -498774586, now seen corresponding path program 6 times [2024-11-09 06:12:47,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:47,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649303626] [2024-11-09 06:12:47,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:47,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:47,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:12:47,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:47,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649303626] [2024-11-09 06:12:47,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649303626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:47,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:47,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:47,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97761670] [2024-11-09 06:12:47,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:47,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:47,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:47,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:47,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:47,248 INFO L87 Difference]: Start difference. First operand 1879 states and 7540 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) [2024-11-09 06:12:47,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:47,665 INFO L93 Difference]: Finished difference Result 2297 states and 8995 transitions. [2024-11-09 06:12:47,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:47,665 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 [2024-11-09 06:12:47,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:47,675 INFO L225 Difference]: With dead ends: 2297 [2024-11-09 06:12:47,675 INFO L226 Difference]: Without dead ends: 1962 [2024-11-09 06:12:47,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:12:47,677 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 71 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:47,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 100 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:12:47,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2024-11-09 06:12:47,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1753. [2024-11-09 06:12:47,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1752 states have (on average 4.068493150684931) internal successors, (7128), 1752 states have internal predecessors, (7128), 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) [2024-11-09 06:12:47,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 7128 transitions. [2024-11-09 06:12:47,801 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 7128 transitions. Word has length 33 [2024-11-09 06:12:47,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:47,801 INFO L471 AbstractCegarLoop]: Abstraction has 1753 states and 7128 transitions. [2024-11-09 06:12:47,802 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) [2024-11-09 06:12:47,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 7128 transitions. [2024-11-09 06:12:47,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 06:12:47,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:47,807 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] [2024-11-09 06:12:47,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-09 06:12:47,807 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:47,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:47,808 INFO L85 PathProgramCache]: Analyzing trace with hash -968856516, now seen corresponding path program 1 times [2024-11-09 06:12:47,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:47,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424409763] [2024-11-09 06:12:47,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:47,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:48,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:48,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:48,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424409763] [2024-11-09 06:12:48,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424409763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:12:48,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660150953] [2024-11-09 06:12:48,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:48,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:12:48,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:12:48,073 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:12:48,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:12:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:48,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 06:12:48,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:12:48,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:48,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:12:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:49,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660150953] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:12:49,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:12:49,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 22 [2024-11-09 06:12:49,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836631648] [2024-11-09 06:12:49,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:49,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:12:49,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:49,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:12:49,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2024-11-09 06:12:49,118 INFO L87 Difference]: Start difference. First operand 1753 states and 7128 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2024-11-09 06:12:50,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:50,474 INFO L93 Difference]: Finished difference Result 5038 states and 20279 transitions. [2024-11-09 06:12:50,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 06:12:50,475 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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 [2024-11-09 06:12:50,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:50,499 INFO L225 Difference]: With dead ends: 5038 [2024-11-09 06:12:50,500 INFO L226 Difference]: Without dead ends: 4882 [2024-11-09 06:12:50,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2024-11-09 06:12:50,503 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 927 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:50,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 20 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:12:50,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4882 states. [2024-11-09 06:12:50,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4882 to 2415. [2024-11-09 06:12:50,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2414 states have (on average 3.92046396023198) internal successors, (9464), 2414 states have internal predecessors, (9464), 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) [2024-11-09 06:12:50,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 9464 transitions. [2024-11-09 06:12:50,792 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 9464 transitions. Word has length 33 [2024-11-09 06:12:50,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:50,792 INFO L471 AbstractCegarLoop]: Abstraction has 2415 states and 9464 transitions. [2024-11-09 06:12:50,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2024-11-09 06:12:50,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 9464 transitions. [2024-11-09 06:12:50,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 06:12:50,797 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:50,797 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] [2024-11-09 06:12:50,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:12:50,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:12:50,997 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:50,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:50,998 INFO L85 PathProgramCache]: Analyzing trace with hash -560630494, now seen corresponding path program 2 times [2024-11-09 06:12:50,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:50,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480866876] [2024-11-09 06:12:50,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:50,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:51,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:51,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:51,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480866876] [2024-11-09 06:12:51,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480866876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:12:51,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351799012] [2024-11-09 06:12:51,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:12:51,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:12:51,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:12:51,226 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:12:51,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:12:51,359 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 06:12:51,359 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:12:51,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 06:12:51,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:12:51,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:12:51,688 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:12:51,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351799012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:51,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:12:51,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 17 [2024-11-09 06:12:51,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819689814] [2024-11-09 06:12:51,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:51,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:12:51,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:51,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:12:51,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:12:51,690 INFO L87 Difference]: Start difference. First operand 2415 states and 9464 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2024-11-09 06:12:53,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:53,183 INFO L93 Difference]: Finished difference Result 5401 states and 22098 transitions. [2024-11-09 06:12:53,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 06:12:53,183 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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 [2024-11-09 06:12:53,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:53,211 INFO L225 Difference]: With dead ends: 5401 [2024-11-09 06:12:53,211 INFO L226 Difference]: Without dead ends: 5245 [2024-11-09 06:12:53,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2024-11-09 06:12:53,215 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 411 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:53,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 36 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:12:53,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5245 states. [2024-11-09 06:12:53,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5245 to 3257. [2024-11-09 06:12:53,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3257 states, 3256 states have (on average 4.083538083538084) internal successors, (13296), 3256 states have internal predecessors, (13296), 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) [2024-11-09 06:12:53,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3257 states to 3257 states and 13296 transitions. [2024-11-09 06:12:53,644 INFO L78 Accepts]: Start accepts. Automaton has 3257 states and 13296 transitions. Word has length 33 [2024-11-09 06:12:53,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:53,644 INFO L471 AbstractCegarLoop]: Abstraction has 3257 states and 13296 transitions. [2024-11-09 06:12:53,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2024-11-09 06:12:53,645 INFO L276 IsEmpty]: Start isEmpty. Operand 3257 states and 13296 transitions. [2024-11-09 06:12:53,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 06:12:53,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:53,652 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] [2024-11-09 06:12:53,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:12:53,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:12:53,853 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:53,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:53,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1921080994, now seen corresponding path program 3 times [2024-11-09 06:12:53,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:53,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901279425] [2024-11-09 06:12:53,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:53,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:54,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:54,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901279425] [2024-11-09 06:12:54,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901279425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:12:54,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298942874] [2024-11-09 06:12:54,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 06:12:54,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:12:54,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:12:54,083 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:12:54,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:12:54,215 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 06:12:54,215 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:12:54,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 06:12:54,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:12:54,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:12:54,257 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:12:54,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298942874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:54,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:12:54,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2024-11-09 06:12:54,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262433979] [2024-11-09 06:12:54,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:54,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:12:54,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:54,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:12:54,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:12:54,260 INFO L87 Difference]: Start difference. First operand 3257 states and 13296 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2024-11-09 06:12:55,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:55,432 INFO L93 Difference]: Finished difference Result 4225 states and 16798 transitions. [2024-11-09 06:12:55,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:55,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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 [2024-11-09 06:12:55,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:55,446 INFO L225 Difference]: With dead ends: 4225 [2024-11-09 06:12:55,446 INFO L226 Difference]: Without dead ends: 3603 [2024-11-09 06:12:55,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:12:55,449 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 73 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:55,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 80 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:12:55,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3603 states. [2024-11-09 06:12:55,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3603 to 3189. [2024-11-09 06:12:55,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3189 states, 3188 states have (on average 4.026976160602258) internal successors, (12838), 3188 states have internal predecessors, (12838), 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) [2024-11-09 06:12:55,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3189 states to 3189 states and 12838 transitions. [2024-11-09 06:12:55,748 INFO L78 Accepts]: Start accepts. Automaton has 3189 states and 12838 transitions. Word has length 33 [2024-11-09 06:12:55,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:55,748 INFO L471 AbstractCegarLoop]: Abstraction has 3189 states and 12838 transitions. [2024-11-09 06:12:55,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2024-11-09 06:12:55,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3189 states and 12838 transitions. [2024-11-09 06:12:55,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 06:12:55,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:55,755 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] [2024-11-09 06:12:55,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 06:12:55,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-09 06:12:55,956 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:55,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:55,956 INFO L85 PathProgramCache]: Analyzing trace with hash 522326972, now seen corresponding path program 4 times [2024-11-09 06:12:55,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:55,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985228941] [2024-11-09 06:12:55,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:55,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:56,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:56,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:56,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985228941] [2024-11-09 06:12:56,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985228941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:12:56,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998978321] [2024-11-09 06:12:56,198 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 06:12:56,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:12:56,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:12:56,201 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:12:56,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 06:12:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:56,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:12:56,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:12:56,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:56,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:12:57,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:12:57,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998978321] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:12:57,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:12:57,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 22 [2024-11-09 06:12:57,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528307514] [2024-11-09 06:12:57,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:57,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:12:57,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:57,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:12:57,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2024-11-09 06:12:57,006 INFO L87 Difference]: Start difference. First operand 3189 states and 12838 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2024-11-09 06:12:58,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:58,484 INFO L93 Difference]: Finished difference Result 6580 states and 27086 transitions. [2024-11-09 06:12:58,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 06:12:58,485 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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 [2024-11-09 06:12:58,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:58,509 INFO L225 Difference]: With dead ends: 6580 [2024-11-09 06:12:58,509 INFO L226 Difference]: Without dead ends: 6324 [2024-11-09 06:12:58,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2024-11-09 06:12:58,513 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 814 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:58,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 38 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:12:58,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6324 states. [2024-11-09 06:12:58,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6324 to 3007. [2024-11-09 06:12:58,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 3006 states have (on average 4.024617431803061) internal successors, (12098), 3006 states have internal predecessors, (12098), 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) [2024-11-09 06:12:58,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 12098 transitions. [2024-11-09 06:12:58,870 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 12098 transitions. Word has length 33 [2024-11-09 06:12:58,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:58,870 INFO L471 AbstractCegarLoop]: Abstraction has 3007 states and 12098 transitions. [2024-11-09 06:12:58,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 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) [2024-11-09 06:12:58,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 12098 transitions. [2024-11-09 06:12:58,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 06:12:58,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:58,876 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] [2024-11-09 06:12:58,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 06:12:59,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-09 06:12:59,077 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:12:59,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:59,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1493475500, now seen corresponding path program 5 times [2024-11-09 06:12:59,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:59,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445650018] [2024-11-09 06:12:59,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:59,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:59,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:12:59,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:59,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445650018] [2024-11-09 06:12:59,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445650018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:59,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:59,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:12:59,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252397321] [2024-11-09 06:12:59,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:59,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:12:59,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:59,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:12:59,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:12:59,188 INFO L87 Difference]: Start difference. First operand 3007 states and 12098 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) [2024-11-09 06:12:59,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:59,994 INFO L93 Difference]: Finished difference Result 3925 states and 15335 transitions. [2024-11-09 06:12:59,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:12:59,994 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 [2024-11-09 06:12:59,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:13:00,006 INFO L225 Difference]: With dead ends: 3925 [2024-11-09 06:13:00,006 INFO L226 Difference]: Without dead ends: 3443 [2024-11-09 06:13:00,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:13:00,008 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 78 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:13:00,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 83 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:13:00,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3443 states. [2024-11-09 06:13:00,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3443 to 2807. [2024-11-09 06:13:00,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2807 states, 2806 states have (on average 4.083392729864576) internal successors, (11458), 2806 states have internal predecessors, (11458), 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) [2024-11-09 06:13:00,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 11458 transitions. [2024-11-09 06:13:00,306 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 11458 transitions. Word has length 33 [2024-11-09 06:13:00,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:13:00,307 INFO L471 AbstractCegarLoop]: Abstraction has 2807 states and 11458 transitions. [2024-11-09 06:13:00,307 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) [2024-11-09 06:13:00,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 11458 transitions. [2024-11-09 06:13:00,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 06:13:00,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:13:00,312 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] [2024-11-09 06:13:00,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-09 06:13:00,312 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:13:00,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:13:00,312 INFO L85 PathProgramCache]: Analyzing trace with hash 167192348, now seen corresponding path program 6 times [2024-11-09 06:13:00,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:13:00,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931704100] [2024-11-09 06:13:00,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:13:00,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:13:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:00,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:13:00,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:13:00,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931704100] [2024-11-09 06:13:00,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931704100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:13:00,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157949025] [2024-11-09 06:13:00,523 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 06:13:00,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:13:00,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:13:00,525 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:13:00,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 06:13:00,623 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 06:13:00,624 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:13:00,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 06:13:00,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:13:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:00,663 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:13:00,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157949025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:13:00,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:13:00,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2024-11-09 06:13:00,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297327916] [2024-11-09 06:13:00,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:13:00,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:13:00,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:13:00,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:13:00,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:13:00,665 INFO L87 Difference]: Start difference. First operand 2807 states and 11458 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2024-11-09 06:13:01,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:13:01,609 INFO L93 Difference]: Finished difference Result 4303 states and 17369 transitions. [2024-11-09 06:13:01,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:13:01,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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 [2024-11-09 06:13:01,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:13:01,624 INFO L225 Difference]: With dead ends: 4303 [2024-11-09 06:13:01,624 INFO L226 Difference]: Without dead ends: 3471 [2024-11-09 06:13:01,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:13:01,627 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 85 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:13:01,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 66 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:13:01,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3471 states. [2024-11-09 06:13:01,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3471 to 2901. [2024-11-09 06:13:01,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2901 states, 2900 states have (on average 4.086206896551724) internal successors, (11850), 2900 states have internal predecessors, (11850), 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) [2024-11-09 06:13:01,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2901 states to 2901 states and 11850 transitions. [2024-11-09 06:13:01,971 INFO L78 Accepts]: Start accepts. Automaton has 2901 states and 11850 transitions. Word has length 33 [2024-11-09 06:13:01,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:13:01,971 INFO L471 AbstractCegarLoop]: Abstraction has 2901 states and 11850 transitions. [2024-11-09 06:13:01,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2024-11-09 06:13:01,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2901 states and 11850 transitions. [2024-11-09 06:13:01,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 06:13:01,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:13:01,977 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] [2024-11-09 06:13:01,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 06:13:02,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-09 06:13:02,178 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:13:02,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:13:02,178 INFO L85 PathProgramCache]: Analyzing trace with hash -454765292, now seen corresponding path program 7 times [2024-11-09 06:13:02,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:13:02,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361376931] [2024-11-09 06:13:02,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:13:02,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:13:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:02,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:02,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:13:02,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361376931] [2024-11-09 06:13:02,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361376931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:13:02,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:13:02,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:13:02,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332342059] [2024-11-09 06:13:02,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:13:02,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:13:02,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:13:02,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:13:02,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:13:02,257 INFO L87 Difference]: Start difference. First operand 2901 states and 11850 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2024-11-09 06:13:03,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:13:03,139 INFO L93 Difference]: Finished difference Result 3673 states and 14626 transitions. [2024-11-09 06:13:03,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:13:03,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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 [2024-11-09 06:13:03,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:13:03,154 INFO L225 Difference]: With dead ends: 3673 [2024-11-09 06:13:03,154 INFO L226 Difference]: Without dead ends: 3183 [2024-11-09 06:13:03,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:13:03,157 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 70 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:13:03,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 65 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:13:03,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2024-11-09 06:13:03,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 2901. [2024-11-09 06:13:03,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2901 states, 2900 states have (on average 4.048965517241379) internal successors, (11742), 2900 states have internal predecessors, (11742), 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) [2024-11-09 06:13:03,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2901 states to 2901 states and 11742 transitions. [2024-11-09 06:13:03,545 INFO L78 Accepts]: Start accepts. Automaton has 2901 states and 11742 transitions. Word has length 33 [2024-11-09 06:13:03,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:13:03,546 INFO L471 AbstractCegarLoop]: Abstraction has 2901 states and 11742 transitions. [2024-11-09 06:13:03,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2024-11-09 06:13:03,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2901 states and 11742 transitions. [2024-11-09 06:13:03,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 06:13:03,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:13:03,551 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] [2024-11-09 06:13:03,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-09 06:13:03,552 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:13:03,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:13:03,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1108155014, now seen corresponding path program 8 times [2024-11-09 06:13:03,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:13:03,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005727742] [2024-11-09 06:13:03,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:13:03,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:13:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:03,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:03,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:13:03,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005727742] [2024-11-09 06:13:03,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005727742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:13:03,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:13:03,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:13:03,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973052840] [2024-11-09 06:13:03,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:13:03,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:13:03,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:13:03,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:13:03,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:13:03,638 INFO L87 Difference]: Start difference. First operand 2901 states and 11742 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2024-11-09 06:13:04,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:13:04,205 INFO L93 Difference]: Finished difference Result 3183 states and 12741 transitions. [2024-11-09 06:13:04,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:13:04,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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 [2024-11-09 06:13:04,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:13:04,218 INFO L225 Difference]: With dead ends: 3183 [2024-11-09 06:13:04,218 INFO L226 Difference]: Without dead ends: 2496 [2024-11-09 06:13:04,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:13:04,222 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 77 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:13:04,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 43 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:13:04,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2024-11-09 06:13:04,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2226. [2024-11-09 06:13:04,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2226 states, 2225 states have (on average 4.051685393258427) internal successors, (9015), 2225 states have internal predecessors, (9015), 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) [2024-11-09 06:13:04,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 9015 transitions. [2024-11-09 06:13:04,549 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 9015 transitions. Word has length 33 [2024-11-09 06:13:04,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:13:04,549 INFO L471 AbstractCegarLoop]: Abstraction has 2226 states and 9015 transitions. [2024-11-09 06:13:04,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2024-11-09 06:13:04,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 9015 transitions. [2024-11-09 06:13:04,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 06:13:04,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:13:04,553 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] [2024-11-09 06:13:04,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-09 06:13:04,553 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:13:04,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:13:04,554 INFO L85 PathProgramCache]: Analyzing trace with hash -825353861, now seen corresponding path program 1 times [2024-11-09 06:13:04,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:13:04,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280525335] [2024-11-09 06:13:04,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:13:04,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:13:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:04,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:13:04,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:13:04,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280525335] [2024-11-09 06:13:04,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280525335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:13:04,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938014957] [2024-11-09 06:13:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:13:04,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:13:04,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:13:04,760 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:13:04,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 06:13:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:04,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:13:04,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:13:05,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:13:05,014 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:13:05,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:13:05,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938014957] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:13:05,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:13:05,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 6] total 15 [2024-11-09 06:13:05,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448646210] [2024-11-09 06:13:05,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:13:05,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:13:05,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:13:05,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:13:05,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-09 06:13:05,146 INFO L87 Difference]: Start difference. First operand 2226 states and 9015 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 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) [2024-11-09 06:13:05,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:13:05,874 INFO L93 Difference]: Finished difference Result 3614 states and 14305 transitions. [2024-11-09 06:13:05,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:13:05,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 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 37 [2024-11-09 06:13:05,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:13:05,888 INFO L225 Difference]: With dead ends: 3614 [2024-11-09 06:13:05,888 INFO L226 Difference]: Without dead ends: 2762 [2024-11-09 06:13:05,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:13:05,890 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 130 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:13:05,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 22 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:13:05,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2024-11-09 06:13:06,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 2470. [2024-11-09 06:13:06,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2470 states, 2469 states have (on average 3.9461320372620494) internal successors, (9743), 2469 states have internal predecessors, (9743), 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) [2024-11-09 06:13:06,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 9743 transitions. [2024-11-09 06:13:06,273 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 9743 transitions. Word has length 37 [2024-11-09 06:13:06,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:13:06,273 INFO L471 AbstractCegarLoop]: Abstraction has 2470 states and 9743 transitions. [2024-11-09 06:13:06,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 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) [2024-11-09 06:13:06,274 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 9743 transitions. [2024-11-09 06:13:06,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 06:13:06,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:13:06,281 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] [2024-11-09 06:13:06,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 06:13:06,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:13:06,482 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:13:06,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:13:06,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1996260269, now seen corresponding path program 1 times [2024-11-09 06:13:06,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:13:06,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765904347] [2024-11-09 06:13:06,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:13:06,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:13:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:06,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:06,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:13:06,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765904347] [2024-11-09 06:13:06,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765904347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:13:06,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051309828] [2024-11-09 06:13:06,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:13:06,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:13:06,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:13:06,772 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:13:06,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 06:13:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:06,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 06:13:06,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:13:07,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:07,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:13:07,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:07,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051309828] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:13:07,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:13:07,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 22 [2024-11-09 06:13:07,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677983661] [2024-11-09 06:13:07,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:13:07,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:13:07,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:13:07,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:13:07,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2024-11-09 06:13:07,604 INFO L87 Difference]: Start difference. First operand 2470 states and 9743 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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) [2024-11-09 06:13:09,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:13:09,148 INFO L93 Difference]: Finished difference Result 5238 states and 20421 transitions. [2024-11-09 06:13:09,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 06:13:09,149 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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 [2024-11-09 06:13:09,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:13:09,171 INFO L225 Difference]: With dead ends: 5238 [2024-11-09 06:13:09,171 INFO L226 Difference]: Without dead ends: 5070 [2024-11-09 06:13:09,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2024-11-09 06:13:09,173 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 666 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:13:09,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 20 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:13:09,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5070 states. [2024-11-09 06:13:09,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5070 to 2566. [2024-11-09 06:13:09,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 2565 states have (on average 3.932553606237817) internal successors, (10087), 2565 states have internal predecessors, (10087), 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) [2024-11-09 06:13:09,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 10087 transitions. [2024-11-09 06:13:09,622 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 10087 transitions. Word has length 39 [2024-11-09 06:13:09,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:13:09,623 INFO L471 AbstractCegarLoop]: Abstraction has 2566 states and 10087 transitions. [2024-11-09 06:13:09,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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) [2024-11-09 06:13:09,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 10087 transitions. [2024-11-09 06:13:09,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 06:13:09,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:13:09,628 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] [2024-11-09 06:13:09,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 06:13:09,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:13:09,829 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:13:09,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:13:09,829 INFO L85 PathProgramCache]: Analyzing trace with hash 6992851, now seen corresponding path program 2 times [2024-11-09 06:13:09,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:13:09,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087643094] [2024-11-09 06:13:09,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:13:09,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:13:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:10,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:10,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:13:10,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087643094] [2024-11-09 06:13:10,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087643094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:13:10,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054570998] [2024-11-09 06:13:10,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:13:10,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:13:10,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:13:10,058 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:13:10,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 06:13:10,187 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 06:13:10,187 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:13:10,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:13:10,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:13:10,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:13:10,572 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:13:10,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054570998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:13:10,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:13:10,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2024-11-09 06:13:10,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349117069] [2024-11-09 06:13:10,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:13:10,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:13:10,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:13:10,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:13:10,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:13:10,574 INFO L87 Difference]: Start difference. First operand 2566 states and 10087 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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) [2024-11-09 06:13:12,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:13:12,764 INFO L93 Difference]: Finished difference Result 6437 states and 27125 transitions. [2024-11-09 06:13:12,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 06:13:12,765 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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 [2024-11-09 06:13:12,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:13:12,787 INFO L225 Difference]: With dead ends: 6437 [2024-11-09 06:13:12,787 INFO L226 Difference]: Without dead ends: 6145 [2024-11-09 06:13:12,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2024-11-09 06:13:12,790 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 231 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:13:12,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 61 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:13:12,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6145 states. [2024-11-09 06:13:13,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6145 to 2867. [2024-11-09 06:13:13,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2867 states, 2866 states have (on average 3.9881367759944175) internal successors, (11430), 2866 states have internal predecessors, (11430), 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) [2024-11-09 06:13:13,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 11430 transitions. [2024-11-09 06:13:13,356 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 11430 transitions. Word has length 39 [2024-11-09 06:13:13,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:13:13,356 INFO L471 AbstractCegarLoop]: Abstraction has 2867 states and 11430 transitions. [2024-11-09 06:13:13,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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) [2024-11-09 06:13:13,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 11430 transitions. [2024-11-09 06:13:13,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 06:13:13,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:13:13,362 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] [2024-11-09 06:13:13,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 06:13:13,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-09 06:13:13,563 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:13:13,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:13:13,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1959877399, now seen corresponding path program 3 times [2024-11-09 06:13:13,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:13:13,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418346312] [2024-11-09 06:13:13,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:13:13,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:13:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:13,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:13:13,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418346312] [2024-11-09 06:13:13,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418346312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:13:13,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949379966] [2024-11-09 06:13:13,825 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 06:13:13,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:13:13,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:13:13,827 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:13:13,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 06:13:13,944 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 06:13:13,944 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:13:13,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 06:13:13,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:13:14,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:13:14,310 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:13:14,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949379966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:13:14,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:13:14,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 18 [2024-11-09 06:13:14,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245499139] [2024-11-09 06:13:14,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:13:14,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:13:14,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:13:14,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:13:14,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2024-11-09 06:13:14,312 INFO L87 Difference]: Start difference. First operand 2867 states and 11430 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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) [2024-11-09 06:13:17,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:13:17,008 INFO L93 Difference]: Finished difference Result 5831 states and 24140 transitions. [2024-11-09 06:13:17,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 06:13:17,008 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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 [2024-11-09 06:13:17,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:13:17,030 INFO L225 Difference]: With dead ends: 5831 [2024-11-09 06:13:17,030 INFO L226 Difference]: Without dead ends: 5711 [2024-11-09 06:13:17,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2024-11-09 06:13:17,033 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 182 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:13:17,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 116 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 06:13:17,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5711 states. [2024-11-09 06:13:17,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5711 to 3277. [2024-11-09 06:13:17,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3277 states, 3276 states have (on average 4.0186202686202686) internal successors, (13165), 3276 states have internal predecessors, (13165), 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) [2024-11-09 06:13:17,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3277 states to 3277 states and 13165 transitions. [2024-11-09 06:13:17,728 INFO L78 Accepts]: Start accepts. Automaton has 3277 states and 13165 transitions. Word has length 39 [2024-11-09 06:13:17,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:13:17,728 INFO L471 AbstractCegarLoop]: Abstraction has 3277 states and 13165 transitions. [2024-11-09 06:13:17,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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) [2024-11-09 06:13:17,729 INFO L276 IsEmpty]: Start isEmpty. Operand 3277 states and 13165 transitions. [2024-11-09 06:13:17,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 06:13:17,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:13:17,737 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] [2024-11-09 06:13:17,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 06:13:17,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:13:17,937 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:13:17,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:13:17,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1377810631, now seen corresponding path program 4 times [2024-11-09 06:13:17,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:13:17,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129012265] [2024-11-09 06:13:17,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:13:17,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:13:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:18,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:18,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:13:18,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129012265] [2024-11-09 06:13:18,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129012265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:13:18,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104796360] [2024-11-09 06:13:18,172 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 06:13:18,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:13:18,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:13:18,174 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:13:18,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 06:13:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:18,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:13:18,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:13:18,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:18,547 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:13:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:18,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104796360] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:13:18,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:13:18,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 22 [2024-11-09 06:13:18,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619078084] [2024-11-09 06:13:18,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:13:18,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:13:18,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:13:18,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:13:18,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2024-11-09 06:13:18,810 INFO L87 Difference]: Start difference. First operand 3277 states and 13165 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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) [2024-11-09 06:13:21,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:13:21,637 INFO L93 Difference]: Finished difference Result 7178 states and 28845 transitions. [2024-11-09 06:13:21,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 06:13:21,637 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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 [2024-11-09 06:13:21,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:13:21,661 INFO L225 Difference]: With dead ends: 7178 [2024-11-09 06:13:21,661 INFO L226 Difference]: Without dead ends: 6998 [2024-11-09 06:13:21,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=237, Invalid=755, Unknown=0, NotChecked=0, Total=992 [2024-11-09 06:13:21,663 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 558 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:13:21,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 32 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:13:21,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6998 states. [2024-11-09 06:13:22,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6998 to 3766. [2024-11-09 06:13:22,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3766 states, 3765 states have (on average 4.161752988047809) internal successors, (15669), 3765 states have internal predecessors, (15669), 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) [2024-11-09 06:13:22,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 15669 transitions. [2024-11-09 06:13:22,502 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 15669 transitions. Word has length 39 [2024-11-09 06:13:22,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:13:22,502 INFO L471 AbstractCegarLoop]: Abstraction has 3766 states and 15669 transitions. [2024-11-09 06:13:22,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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) [2024-11-09 06:13:22,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 15669 transitions. [2024-11-09 06:13:22,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 06:13:22,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:13:22,514 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] [2024-11-09 06:13:22,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 06:13:22,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:13:22,716 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:13:22,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:13:22,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1583249543, now seen corresponding path program 5 times [2024-11-09 06:13:22,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:13:22,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826053234] [2024-11-09 06:13:22,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:13:22,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:13:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:22,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:22,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:13:22,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826053234] [2024-11-09 06:13:22,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826053234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:13:22,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929473229] [2024-11-09 06:13:22,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:13:22,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:13:22,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:13:22,982 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:13:22,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 06:13:23,105 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 06:13:23,106 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:13:23,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 06:13:23,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:13:23,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:13:23,451 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:13:23,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929473229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:13:23,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:13:23,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2024-11-09 06:13:23,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369755351] [2024-11-09 06:13:23,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:13:23,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:13:23,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:13:23,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:13:23,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:13:23,454 INFO L87 Difference]: Start difference. First operand 3766 states and 15669 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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) [2024-11-09 06:13:26,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:13:26,555 INFO L93 Difference]: Finished difference Result 8449 states and 36358 transitions. [2024-11-09 06:13:26,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 06:13:26,555 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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 [2024-11-09 06:13:26,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:13:26,613 INFO L225 Difference]: With dead ends: 8449 [2024-11-09 06:13:26,613 INFO L226 Difference]: Without dead ends: 8223 [2024-11-09 06:13:26,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2024-11-09 06:13:26,619 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 236 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:13:26,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 51 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:13:26,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8223 states. [2024-11-09 06:13:27,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8223 to 4216. [2024-11-09 06:13:27,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4216 states, 4215 states have (on average 4.2355871886121) internal successors, (17853), 4215 states have internal predecessors, (17853), 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) [2024-11-09 06:13:27,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4216 states to 4216 states and 17853 transitions. [2024-11-09 06:13:27,704 INFO L78 Accepts]: Start accepts. Automaton has 4216 states and 17853 transitions. Word has length 39 [2024-11-09 06:13:27,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:13:27,705 INFO L471 AbstractCegarLoop]: Abstraction has 4216 states and 17853 transitions. [2024-11-09 06:13:27,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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) [2024-11-09 06:13:27,705 INFO L276 IsEmpty]: Start isEmpty. Operand 4216 states and 17853 transitions. [2024-11-09 06:13:27,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 06:13:27,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:13:27,715 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] [2024-11-09 06:13:27,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 06:13:27,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-09 06:13:27,915 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:13:27,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:13:27,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1410897287, now seen corresponding path program 6 times [2024-11-09 06:13:27,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:13:27,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144122251] [2024-11-09 06:13:27,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:13:27,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:13:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:28,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:28,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:13:28,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144122251] [2024-11-09 06:13:28,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144122251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:13:28,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480587704] [2024-11-09 06:13:28,158 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 06:13:28,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:13:28,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:13:28,160 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:13:28,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 06:13:28,289 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 06:13:28,289 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:13:28,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 06:13:28,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:13:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:13:28,662 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:13:28,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480587704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:13:28,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:13:28,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 18 [2024-11-09 06:13:28,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137068522] [2024-11-09 06:13:28,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:13:28,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:13:28,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:13:28,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:13:28,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-09 06:13:28,664 INFO L87 Difference]: Start difference. First operand 4216 states and 17853 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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) [2024-11-09 06:13:31,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:13:31,780 INFO L93 Difference]: Finished difference Result 7347 states and 32268 transitions. [2024-11-09 06:13:31,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 06:13:31,781 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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 [2024-11-09 06:13:31,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:13:31,813 INFO L225 Difference]: With dead ends: 7347 [2024-11-09 06:13:31,813 INFO L226 Difference]: Without dead ends: 7234 [2024-11-09 06:13:31,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2024-11-09 06:13:31,815 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 149 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:13:31,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 124 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:13:31,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7234 states. [2024-11-09 06:13:32,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7234 to 4456. [2024-11-09 06:13:33,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4456 states, 4455 states have (on average 4.224242424242425) internal successors, (18819), 4455 states have internal predecessors, (18819), 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) [2024-11-09 06:13:33,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 18819 transitions. [2024-11-09 06:13:33,037 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 18819 transitions. Word has length 39 [2024-11-09 06:13:33,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:13:33,037 INFO L471 AbstractCegarLoop]: Abstraction has 4456 states and 18819 transitions. [2024-11-09 06:13:33,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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) [2024-11-09 06:13:33,038 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 18819 transitions. [2024-11-09 06:13:33,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 06:13:33,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:13:33,048 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] [2024-11-09 06:13:33,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 06:13:33,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-09 06:13:33,249 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:13:33,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:13:33,249 INFO L85 PathProgramCache]: Analyzing trace with hash -2027685477, now seen corresponding path program 7 times [2024-11-09 06:13:33,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:13:33,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090918517] [2024-11-09 06:13:33,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:13:33,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:13:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:33,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:33,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:13:33,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090918517] [2024-11-09 06:13:33,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090918517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:13:33,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456857134] [2024-11-09 06:13:33,543 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 06:13:33,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:13:33,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:13:33,544 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:13:33,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 06:13:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:33,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:13:33,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:13:33,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:33,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:13:34,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:34,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456857134] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:13:34,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:13:34,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 22 [2024-11-09 06:13:34,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479912225] [2024-11-09 06:13:34,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:13:34,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:13:34,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:13:34,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:13:34,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2024-11-09 06:13:34,407 INFO L87 Difference]: Start difference. First operand 4456 states and 18819 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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) [2024-11-09 06:13:37,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:13:37,226 INFO L93 Difference]: Finished difference Result 7238 states and 29592 transitions. [2024-11-09 06:13:37,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 06:13:37,226 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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 [2024-11-09 06:13:37,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:13:37,254 INFO L225 Difference]: With dead ends: 7238 [2024-11-09 06:13:37,254 INFO L226 Difference]: Without dead ends: 6979 [2024-11-09 06:13:37,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2024-11-09 06:13:37,257 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 561 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:13:37,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 46 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:13:37,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6979 states. [2024-11-09 06:13:38,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6979 to 4279. [2024-11-09 06:13:38,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4279 states, 4278 states have (on average 4.171341748480598) internal successors, (17845), 4278 states have internal predecessors, (17845), 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) [2024-11-09 06:13:38,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4279 states to 4279 states and 17845 transitions. [2024-11-09 06:13:38,314 INFO L78 Accepts]: Start accepts. Automaton has 4279 states and 17845 transitions. Word has length 39 [2024-11-09 06:13:38,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:13:38,315 INFO L471 AbstractCegarLoop]: Abstraction has 4279 states and 17845 transitions. [2024-11-09 06:13:38,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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) [2024-11-09 06:13:38,315 INFO L276 IsEmpty]: Start isEmpty. Operand 4279 states and 17845 transitions. [2024-11-09 06:13:38,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 06:13:38,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:13:38,323 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] [2024-11-09 06:13:38,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 06:13:38,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-09 06:13:38,523 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:13:38,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:13:38,524 INFO L85 PathProgramCache]: Analyzing trace with hash 813524585, now seen corresponding path program 8 times [2024-11-09 06:13:38,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:13:38,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295260761] [2024-11-09 06:13:38,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:13:38,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:13:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:38,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:13:38,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295260761] [2024-11-09 06:13:38,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295260761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:13:38,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020578739] [2024-11-09 06:13:38,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:13:38,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:13:38,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:13:38,737 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:13:38,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 06:13:38,854 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 06:13:38,855 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:13:38,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:13:38,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:13:39,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:13:39,188 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:13:39,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020578739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:13:39,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:13:39,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2024-11-09 06:13:39,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350952083] [2024-11-09 06:13:39,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:13:39,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:13:39,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:13:39,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:13:39,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:13:39,190 INFO L87 Difference]: Start difference. First operand 4279 states and 17845 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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) [2024-11-09 06:13:42,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:13:42,569 INFO L93 Difference]: Finished difference Result 8464 states and 36005 transitions. [2024-11-09 06:13:42,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 06:13:42,570 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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 [2024-11-09 06:13:42,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:13:42,616 INFO L225 Difference]: With dead ends: 8464 [2024-11-09 06:13:42,616 INFO L226 Difference]: Without dead ends: 7901 [2024-11-09 06:13:42,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2024-11-09 06:13:42,620 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 214 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:13:42,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 66 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:13:42,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7901 states. [2024-11-09 06:13:43,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7901 to 4191. [2024-11-09 06:13:43,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 4190 states have (on average 4.1305489260143196) internal successors, (17307), 4190 states have internal predecessors, (17307), 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) [2024-11-09 06:13:43,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 17307 transitions. [2024-11-09 06:13:43,656 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 17307 transitions. Word has length 39 [2024-11-09 06:13:43,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:13:43,656 INFO L471 AbstractCegarLoop]: Abstraction has 4191 states and 17307 transitions. [2024-11-09 06:13:43,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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) [2024-11-09 06:13:43,657 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 17307 transitions. [2024-11-09 06:13:43,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 06:13:43,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:13:43,664 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] [2024-11-09 06:13:43,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 06:13:43,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:13:43,865 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:13:43,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:13:43,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1657404879, now seen corresponding path program 9 times [2024-11-09 06:13:43,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:13:43,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917662726] [2024-11-09 06:13:43,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:13:43,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:13:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:44,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:44,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:13:44,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917662726] [2024-11-09 06:13:44,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917662726] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:13:44,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677496759] [2024-11-09 06:13:44,125 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 06:13:44,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:13:44,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:13:44,126 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:13:44,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 06:13:44,255 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 06:13:44,255 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:13:44,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 06:13:44,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:13:44,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:13:44,596 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:13:44,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677496759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:13:44,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:13:44,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 18 [2024-11-09 06:13:44,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326459990] [2024-11-09 06:13:44,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:13:44,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:13:44,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:13:44,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:13:44,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-09 06:13:44,598 INFO L87 Difference]: Start difference. First operand 4191 states and 17307 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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) [2024-11-09 06:13:48,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:13:48,276 INFO L93 Difference]: Finished difference Result 7481 states and 31738 transitions. [2024-11-09 06:13:48,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 06:13:48,276 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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 [2024-11-09 06:13:48,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:13:48,304 INFO L225 Difference]: With dead ends: 7481 [2024-11-09 06:13:48,304 INFO L226 Difference]: Without dead ends: 7361 [2024-11-09 06:13:48,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2024-11-09 06:13:48,307 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 180 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:13:48,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 138 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:13:48,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7361 states. [2024-11-09 06:13:49,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7361 to 4657. [2024-11-09 06:13:49,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4657 states, 4656 states have (on average 4.201460481099656) internal successors, (19562), 4656 states have internal predecessors, (19562), 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) [2024-11-09 06:13:49,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4657 states to 4657 states and 19562 transitions. [2024-11-09 06:13:49,548 INFO L78 Accepts]: Start accepts. Automaton has 4657 states and 19562 transitions. Word has length 39 [2024-11-09 06:13:49,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:13:49,549 INFO L471 AbstractCegarLoop]: Abstraction has 4657 states and 19562 transitions. [2024-11-09 06:13:49,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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) [2024-11-09 06:13:49,549 INFO L276 IsEmpty]: Start isEmpty. Operand 4657 states and 19562 transitions. [2024-11-09 06:13:49,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 06:13:49,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:13:49,558 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] [2024-11-09 06:13:49,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 06:13:49,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:13:49,759 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:13:49,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:13:49,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1680283151, now seen corresponding path program 10 times [2024-11-09 06:13:49,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:13:49,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279665564] [2024-11-09 06:13:49,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:13:49,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:13:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:49,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:49,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:13:49,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279665564] [2024-11-09 06:13:49,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279665564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:13:49,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159946832] [2024-11-09 06:13:49,983 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 06:13:49,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:13:49,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:13:49,985 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:13:49,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 06:13:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:50,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:13:50,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:13:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:50,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:13:50,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:50,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159946832] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:13:50,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:13:50,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 22 [2024-11-09 06:13:50,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795596833] [2024-11-09 06:13:50,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:13:50,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:13:50,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:13:50,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:13:50,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2024-11-09 06:13:50,679 INFO L87 Difference]: Start difference. First operand 4657 states and 19562 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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) [2024-11-09 06:13:53,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:13:53,538 INFO L93 Difference]: Finished difference Result 6951 states and 28325 transitions. [2024-11-09 06:13:53,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 06:13:53,538 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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 [2024-11-09 06:13:53,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:13:53,563 INFO L225 Difference]: With dead ends: 6951 [2024-11-09 06:13:53,563 INFO L226 Difference]: Without dead ends: 6771 [2024-11-09 06:13:53,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=238, Invalid=754, Unknown=0, NotChecked=0, Total=992 [2024-11-09 06:13:53,566 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 564 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:13:53,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 34 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:13:53,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6771 states. [2024-11-09 06:13:54,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6771 to 4865. [2024-11-09 06:13:54,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4865 states, 4864 states have (on average 4.227590460526316) internal successors, (20563), 4864 states have internal predecessors, (20563), 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) [2024-11-09 06:13:54,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4865 states to 4865 states and 20563 transitions. [2024-11-09 06:13:54,798 INFO L78 Accepts]: Start accepts. Automaton has 4865 states and 20563 transitions. Word has length 39 [2024-11-09 06:13:54,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:13:54,798 INFO L471 AbstractCegarLoop]: Abstraction has 4865 states and 20563 transitions. [2024-11-09 06:13:54,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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) [2024-11-09 06:13:54,798 INFO L276 IsEmpty]: Start isEmpty. Operand 4865 states and 20563 transitions. [2024-11-09 06:13:54,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 06:13:54,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:13:54,807 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] [2024-11-09 06:13:54,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 06:13:55,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:13:55,008 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:13:55,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:13:55,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1885722063, now seen corresponding path program 11 times [2024-11-09 06:13:55,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:13:55,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210614807] [2024-11-09 06:13:55,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:13:55,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:13:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:13:55,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:13:55,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:13:55,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210614807] [2024-11-09 06:13:55,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210614807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:13:55,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017979789] [2024-11-09 06:13:55,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:13:55,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:13:55,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:13:55,202 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:13:55,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 06:13:55,321 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 06:13:55,321 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:13:55,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 06:13:55,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:13:55,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:13:55,593 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:13:55,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017979789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:13:55,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:13:55,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2024-11-09 06:13:55,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275183159] [2024-11-09 06:13:55,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:13:55,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:13:55,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:13:55,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:13:55,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:13:55,594 INFO L87 Difference]: Start difference. First operand 4865 states and 20563 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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) [2024-11-09 06:13:59,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:13:59,488 INFO L93 Difference]: Finished difference Result 9523 states and 40709 transitions. [2024-11-09 06:13:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 06:13:59,489 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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 [2024-11-09 06:13:59,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:13:59,521 INFO L225 Difference]: With dead ends: 9523 [2024-11-09 06:13:59,521 INFO L226 Difference]: Without dead ends: 9297 [2024-11-09 06:13:59,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2024-11-09 06:13:59,523 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 215 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:13:59,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 60 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:13:59,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9297 states. [2024-11-09 06:14:00,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9297 to 5093. [2024-11-09 06:14:00,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 5092 states have (on average 4.264925373134329) internal successors, (21717), 5092 states have internal predecessors, (21717), 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) [2024-11-09 06:14:00,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 21717 transitions. [2024-11-09 06:14:00,864 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 21717 transitions. Word has length 39 [2024-11-09 06:14:00,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:14:00,864 INFO L471 AbstractCegarLoop]: Abstraction has 5093 states and 21717 transitions. [2024-11-09 06:14:00,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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) [2024-11-09 06:14:00,864 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 21717 transitions. [2024-11-09 06:14:00,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 06:14:00,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:14:00,873 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] [2024-11-09 06:14:00,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-09 06:14:01,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:14:01,074 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:14:01,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:14:01,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1713369807, now seen corresponding path program 12 times [2024-11-09 06:14:01,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:14:01,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289772090] [2024-11-09 06:14:01,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:01,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:14:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:01,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:14:01,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:14:01,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289772090] [2024-11-09 06:14:01,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289772090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:14:01,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691117497] [2024-11-09 06:14:01,298 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 06:14:01,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:14:01,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:14:01,300 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:14:01,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 06:14:01,422 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 06:14:01,423 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:14:01,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 06:14:01,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:14:01,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:14:01,718 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:14:01,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691117497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:14:01,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:14:01,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 18 [2024-11-09 06:14:01,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900373177] [2024-11-09 06:14:01,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:14:01,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:14:01,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:14:01,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:14:01,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2024-11-09 06:14:01,720 INFO L87 Difference]: Start difference. First operand 5093 states and 21717 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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) [2024-11-09 06:14:05,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:14:05,463 INFO L93 Difference]: Finished difference Result 8218 states and 36041 transitions. [2024-11-09 06:14:05,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 06:14:05,464 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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 [2024-11-09 06:14:05,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:14:05,496 INFO L225 Difference]: With dead ends: 8218 [2024-11-09 06:14:05,496 INFO L226 Difference]: Without dead ends: 8105 [2024-11-09 06:14:05,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-09 06:14:05,498 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 152 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:14:05,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 126 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:14:05,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8105 states. [2024-11-09 06:14:06,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8105 to 5377. [2024-11-09 06:14:06,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5377 states, 5376 states have (on average 4.30078125) internal successors, (23121), 5376 states have internal predecessors, (23121), 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) [2024-11-09 06:14:06,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5377 states to 5377 states and 23121 transitions. [2024-11-09 06:14:06,935 INFO L78 Accepts]: Start accepts. Automaton has 5377 states and 23121 transitions. Word has length 39 [2024-11-09 06:14:06,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:14:06,935 INFO L471 AbstractCegarLoop]: Abstraction has 5377 states and 23121 transitions. [2024-11-09 06:14:06,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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) [2024-11-09 06:14:06,936 INFO L276 IsEmpty]: Start isEmpty. Operand 5377 states and 23121 transitions. [2024-11-09 06:14:06,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 06:14:06,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:14:06,945 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] [2024-11-09 06:14:06,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 06:14:07,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:14:07,146 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:14:07,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:14:07,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1964809299, now seen corresponding path program 13 times [2024-11-09 06:14:07,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:14:07,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41473710] [2024-11-09 06:14:07,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:07,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:14:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:14:07,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:14:07,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41473710] [2024-11-09 06:14:07,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41473710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:14:07,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570376782] [2024-11-09 06:14:07,328 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 06:14:07,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:14:07,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:14:07,330 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:14:07,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 06:14:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:07,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:14:07,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:14:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:14:07,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:14:08,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:14:08,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570376782] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:14:08,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:14:08,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 22 [2024-11-09 06:14:08,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010670391] [2024-11-09 06:14:08,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:14:08,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:14:08,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:14:08,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:14:08,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-11-09 06:14:08,099 INFO L87 Difference]: Start difference. First operand 5377 states and 23121 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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) [2024-11-09 06:14:11,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:14:11,309 INFO L93 Difference]: Finished difference Result 7176 states and 29485 transitions. [2024-11-09 06:14:11,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 06:14:11,310 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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 [2024-11-09 06:14:11,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:14:11,336 INFO L225 Difference]: With dead ends: 7176 [2024-11-09 06:14:11,336 INFO L226 Difference]: Without dead ends: 6865 [2024-11-09 06:14:11,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2024-11-09 06:14:11,339 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 563 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:14:11,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 48 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:14:11,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6865 states. [2024-11-09 06:14:12,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6865 to 4000. [2024-11-09 06:14:12,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4000 states, 3999 states have (on average 4.112278069517379) internal successors, (16445), 3999 states have internal predecessors, (16445), 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) [2024-11-09 06:14:12,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4000 states to 4000 states and 16445 transitions. [2024-11-09 06:14:12,384 INFO L78 Accepts]: Start accepts. Automaton has 4000 states and 16445 transitions. Word has length 39 [2024-11-09 06:14:12,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:14:12,385 INFO L471 AbstractCegarLoop]: Abstraction has 4000 states and 16445 transitions. [2024-11-09 06:14:12,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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) [2024-11-09 06:14:12,385 INFO L276 IsEmpty]: Start isEmpty. Operand 4000 states and 16445 transitions. [2024-11-09 06:14:12,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 06:14:12,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:14:12,391 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] [2024-11-09 06:14:12,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 06:14:12,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-09 06:14:12,592 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:14:12,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:14:12,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1371611943, now seen corresponding path program 14 times [2024-11-09 06:14:12,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:14:12,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626625962] [2024-11-09 06:14:12,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:12,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:14:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:12,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:14:12,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:14:12,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626625962] [2024-11-09 06:14:12,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626625962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:14:12,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044587233] [2024-11-09 06:14:12,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:14:12,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:14:12,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:14:12,849 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:14:12,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 06:14:12,971 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 06:14:12,971 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:14:12,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 06:14:12,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:14:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:14:13,217 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:14:13,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044587233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:14:13,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:14:13,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2024-11-09 06:14:13,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403647690] [2024-11-09 06:14:13,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:14:13,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:14:13,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:14:13,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:14:13,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:14:13,219 INFO L87 Difference]: Start difference. First operand 4000 states and 16445 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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) [2024-11-09 06:14:16,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:14:16,588 INFO L93 Difference]: Finished difference Result 7372 states and 29934 transitions. [2024-11-09 06:14:16,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 06:14:16,588 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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 [2024-11-09 06:14:16,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:14:16,610 INFO L225 Difference]: With dead ends: 7372 [2024-11-09 06:14:16,611 INFO L226 Difference]: Without dead ends: 6940 [2024-11-09 06:14:16,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2024-11-09 06:14:16,613 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 200 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:14:16,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 56 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:14:16,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6940 states. [2024-11-09 06:14:17,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6940 to 3844. [2024-11-09 06:14:17,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3844 states, 3843 states have (on average 4.0710382513661205) internal successors, (15645), 3843 states have internal predecessors, (15645), 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) [2024-11-09 06:14:17,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 15645 transitions. [2024-11-09 06:14:17,625 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 15645 transitions. Word has length 39 [2024-11-09 06:14:17,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:14:17,625 INFO L471 AbstractCegarLoop]: Abstraction has 3844 states and 15645 transitions. [2024-11-09 06:14:17,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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) [2024-11-09 06:14:17,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 15645 transitions. [2024-11-09 06:14:17,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 06:14:17,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:14:17,632 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] [2024-11-09 06:14:17,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-09 06:14:17,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-09 06:14:17,833 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:14:17,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:14:17,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1997815441, now seen corresponding path program 15 times [2024-11-09 06:14:17,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:14:17,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567028476] [2024-11-09 06:14:17,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:17,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:14:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:18,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:14:18,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:14:18,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567028476] [2024-11-09 06:14:18,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567028476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:14:18,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048406131] [2024-11-09 06:14:18,009 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 06:14:18,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:14:18,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:14:18,010 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:14:18,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 06:14:18,138 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 06:14:18,138 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:14:18,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 06:14:18,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:14:18,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:14:18,387 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:14:18,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048406131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:14:18,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:14:18,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2024-11-09 06:14:18,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693114442] [2024-11-09 06:14:18,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:14:18,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:14:18,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:14:18,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:14:18,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:14:18,389 INFO L87 Difference]: Start difference. First operand 3844 states and 15645 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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) [2024-11-09 06:14:21,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:14:21,874 INFO L93 Difference]: Finished difference Result 6770 states and 28031 transitions. [2024-11-09 06:14:21,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 06:14:21,875 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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 [2024-11-09 06:14:21,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:14:21,897 INFO L225 Difference]: With dead ends: 6770 [2024-11-09 06:14:21,897 INFO L226 Difference]: Without dead ends: 5977 [2024-11-09 06:14:21,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2024-11-09 06:14:21,900 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 192 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:14:21,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 125 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:14:21,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5977 states. [2024-11-09 06:14:23,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5977 to 4414. [2024-11-09 06:14:23,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4414 states, 4413 states have (on average 4.1404939950147295) internal successors, (18272), 4413 states have internal predecessors, (18272), 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) [2024-11-09 06:14:23,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4414 states to 4414 states and 18272 transitions. [2024-11-09 06:14:23,236 INFO L78 Accepts]: Start accepts. Automaton has 4414 states and 18272 transitions. Word has length 39 [2024-11-09 06:14:23,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:14:23,237 INFO L471 AbstractCegarLoop]: Abstraction has 4414 states and 18272 transitions. [2024-11-09 06:14:23,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 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) [2024-11-09 06:14:23,237 INFO L276 IsEmpty]: Start isEmpty. Operand 4414 states and 18272 transitions. [2024-11-09 06:14:23,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 06:14:23,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:14:23,244 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] [2024-11-09 06:14:23,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-09 06:14:23,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-09 06:14:23,445 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:14:23,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:14:23,445 INFO L85 PathProgramCache]: Analyzing trace with hash -173231911, now seen corresponding path program 16 times [2024-11-09 06:14:23,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:14:23,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189969682] [2024-11-09 06:14:23,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:23,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:14:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:23,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:14:23,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:14:23,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189969682] [2024-11-09 06:14:23,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189969682] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:14:23,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285098170] [2024-11-09 06:14:23,591 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 06:14:23,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:14:23,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:14:23,592 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:14:23,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 06:14:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:23,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:14:23,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:14:23,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:14:23,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:14:24,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:14:24,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285098170] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:14:24,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:14:24,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 21 [2024-11-09 06:14:24,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091065482] [2024-11-09 06:14:24,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:14:24,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:14:24,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:14:24,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:14:24,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-11-09 06:14:24,209 INFO L87 Difference]: Start difference. First operand 4414 states and 18272 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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) [2024-11-09 06:14:26,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:14:26,744 INFO L93 Difference]: Finished difference Result 5609 states and 22498 transitions. [2024-11-09 06:14:26,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 06:14:26,745 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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 [2024-11-09 06:14:26,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:14:26,763 INFO L225 Difference]: With dead ends: 5609 [2024-11-09 06:14:26,763 INFO L226 Difference]: Without dead ends: 4733 [2024-11-09 06:14:26,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=184, Invalid=686, Unknown=0, NotChecked=0, Total=870 [2024-11-09 06:14:26,766 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 400 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:14:26,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 45 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:14:26,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4733 states. [2024-11-09 06:14:27,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4733 to 3070. [2024-11-09 06:14:27,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3070 states, 3069 states have (on average 4.0667970022808735) internal successors, (12481), 3069 states have internal predecessors, (12481), 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) [2024-11-09 06:14:27,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3070 states to 3070 states and 12481 transitions. [2024-11-09 06:14:27,663 INFO L78 Accepts]: Start accepts. Automaton has 3070 states and 12481 transitions. Word has length 39 [2024-11-09 06:14:27,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:14:27,664 INFO L471 AbstractCegarLoop]: Abstraction has 3070 states and 12481 transitions. [2024-11-09 06:14:27,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 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) [2024-11-09 06:14:27,664 INFO L276 IsEmpty]: Start isEmpty. Operand 3070 states and 12481 transitions. [2024-11-09 06:14:27,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 06:14:27,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:14:27,669 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] [2024-11-09 06:14:27,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-09 06:14:27,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-09 06:14:27,869 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:14:27,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:14:27,870 INFO L85 PathProgramCache]: Analyzing trace with hash 277536923, now seen corresponding path program 1 times [2024-11-09 06:14:27,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:14:27,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620854342] [2024-11-09 06:14:27,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:27,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:14:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:27,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:14:27,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:14:27,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620854342] [2024-11-09 06:14:27,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620854342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:14:27,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:14:27,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:14:27,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238905177] [2024-11-09 06:14:27,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:14:27,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:14:27,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:14:27,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:14:27,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:14:27,945 INFO L87 Difference]: Start difference. First operand 3070 states and 12481 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2024-11-09 06:14:29,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:14:29,518 INFO L93 Difference]: Finished difference Result 4617 states and 18270 transitions. [2024-11-09 06:14:29,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:14:29,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 41 [2024-11-09 06:14:29,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:14:29,534 INFO L225 Difference]: With dead ends: 4617 [2024-11-09 06:14:29,534 INFO L226 Difference]: Without dead ends: 3073 [2024-11-09 06:14:29,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:14:29,537 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 32 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:14:29,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 32 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:14:29,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2024-11-09 06:14:30,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 3073. [2024-11-09 06:14:30,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3073 states, 3072 states have (on average 4.0634765625) internal successors, (12483), 3072 states have internal predecessors, (12483), 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) [2024-11-09 06:14:30,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3073 states to 3073 states and 12483 transitions. [2024-11-09 06:14:30,423 INFO L78 Accepts]: Start accepts. Automaton has 3073 states and 12483 transitions. Word has length 41 [2024-11-09 06:14:30,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:14:30,424 INFO L471 AbstractCegarLoop]: Abstraction has 3073 states and 12483 transitions. [2024-11-09 06:14:30,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2024-11-09 06:14:30,424 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 12483 transitions. [2024-11-09 06:14:30,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 06:14:30,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:14:30,429 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] [2024-11-09 06:14:30,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-11-09 06:14:30,429 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:14:30,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:14:30,430 INFO L85 PathProgramCache]: Analyzing trace with hash -429777500, now seen corresponding path program 1 times [2024-11-09 06:14:30,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:14:30,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475426447] [2024-11-09 06:14:30,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:30,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:14:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:30,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:14:30,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:14:30,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475426447] [2024-11-09 06:14:30,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475426447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:14:30,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346553416] [2024-11-09 06:14:30,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:30,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:14:30,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:14:30,601 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:14:30,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 06:14:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:30,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:14:30,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:14:30,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:14:30,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:14:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:14:31,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346553416] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:14:31,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:14:31,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 6] total 18 [2024-11-09 06:14:31,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275076944] [2024-11-09 06:14:31,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:14:31,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:14:31,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:14:31,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:14:31,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:14:31,009 INFO L87 Difference]: Start difference. First operand 3073 states and 12483 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 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) [2024-11-09 06:14:32,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:14:32,669 INFO L93 Difference]: Finished difference Result 4098 states and 16378 transitions. [2024-11-09 06:14:32,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:14:32,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 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 41 [2024-11-09 06:14:32,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:14:32,687 INFO L225 Difference]: With dead ends: 4098 [2024-11-09 06:14:32,687 INFO L226 Difference]: Without dead ends: 3420 [2024-11-09 06:14:32,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2024-11-09 06:14:32,690 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 49 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:14:32,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 26 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:14:32,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3420 states. [2024-11-09 06:14:33,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3420 to 2930. [2024-11-09 06:14:33,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2930 states, 2929 states have (on average 3.901672925913281) internal successors, (11428), 2929 states have internal predecessors, (11428), 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) [2024-11-09 06:14:33,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 11428 transitions. [2024-11-09 06:14:33,553 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 11428 transitions. Word has length 41 [2024-11-09 06:14:33,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:14:33,554 INFO L471 AbstractCegarLoop]: Abstraction has 2930 states and 11428 transitions. [2024-11-09 06:14:33,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 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) [2024-11-09 06:14:33,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 11428 transitions. [2024-11-09 06:14:33,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 06:14:33,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:14:33,558 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:14:33,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-09 06:14:33,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2024-11-09 06:14:33,759 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:14:33,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:14:33,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1372292958, now seen corresponding path program 1 times [2024-11-09 06:14:33,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:14:33,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049902227] [2024-11-09 06:14:33,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:33,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:14:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:33,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:14:33,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:14:33,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049902227] [2024-11-09 06:14:33,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049902227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:14:33,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267104743] [2024-11-09 06:14:33,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:33,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:14:33,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:14:33,907 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:14:33,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 06:14:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:34,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:14:34,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:14:34,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:14:34,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:14:34,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:14:34,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267104743] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:14:34,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:14:34,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 7] total 16 [2024-11-09 06:14:34,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660445406] [2024-11-09 06:14:34,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:14:34,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:14:34,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:14:34,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:14:34,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2024-11-09 06:14:34,210 INFO L87 Difference]: Start difference. First operand 2930 states and 11428 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2024-11-09 06:14:35,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:14:35,814 INFO L93 Difference]: Finished difference Result 4457 states and 16971 transitions. [2024-11-09 06:14:35,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:14:35,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 43 [2024-11-09 06:14:35,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:14:35,831 INFO L225 Difference]: With dead ends: 4457 [2024-11-09 06:14:35,831 INFO L226 Difference]: Without dead ends: 3342 [2024-11-09 06:14:35,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:14:35,834 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 95 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:14:35,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 26 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:14:35,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3342 states. [2024-11-09 06:14:36,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3342 to 2800. [2024-11-09 06:14:36,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2800 states, 2799 states have (on average 3.7041800643086815) internal successors, (10368), 2799 states have internal predecessors, (10368), 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) [2024-11-09 06:14:36,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2800 states to 2800 states and 10368 transitions. [2024-11-09 06:14:36,754 INFO L78 Accepts]: Start accepts. Automaton has 2800 states and 10368 transitions. Word has length 43 [2024-11-09 06:14:36,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:14:36,754 INFO L471 AbstractCegarLoop]: Abstraction has 2800 states and 10368 transitions. [2024-11-09 06:14:36,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2024-11-09 06:14:36,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2800 states and 10368 transitions. [2024-11-09 06:14:36,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:14:36,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:14:36,759 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:14:36,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-09 06:14:36,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2024-11-09 06:14:36,959 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:14:36,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:14:36,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1001813089, now seen corresponding path program 1 times [2024-11-09 06:14:36,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:14:36,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798167528] [2024-11-09 06:14:36,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:36,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:14:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:14:38,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:14:38,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798167528] [2024-11-09 06:14:38,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798167528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:14:38,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685277296] [2024-11-09 06:14:38,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:38,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:14:38,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:14:38,392 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:14:38,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 06:14:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:38,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 06:14:38,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:14:40,546 INFO L349 Elim1Store]: treesize reduction 3, result has 98.3 percent of original size [2024-11-09 06:14:40,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 151 treesize of output 256 [2024-11-09 06:14:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:14:41,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:14:42,064 INFO L349 Elim1Store]: treesize reduction 4, result has 98.0 percent of original size [2024-11-09 06:14:42,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 52 treesize of output 212 [2024-11-09 06:14:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:14:51,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685277296] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:14:51,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:14:51,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [20, 17] total 45 [2024-11-09 06:14:51,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343178256] [2024-11-09 06:14:51,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:14:51,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 06:14:51,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:14:51,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 06:14:51,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1810, Unknown=0, NotChecked=0, Total=1980 [2024-11-09 06:14:51,664 INFO L87 Difference]: Start difference. First operand 2800 states and 10368 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-09 06:14:56,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:14:56,784 INFO L93 Difference]: Finished difference Result 5530 states and 20502 transitions. [2024-11-09 06:14:56,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 06:14:56,785 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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 45 [2024-11-09 06:14:56,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:14:56,803 INFO L225 Difference]: With dead ends: 5530 [2024-11-09 06:14:56,803 INFO L226 Difference]: Without dead ends: 5494 [2024-11-09 06:14:56,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1061 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=390, Invalid=3642, Unknown=0, NotChecked=0, Total=4032 [2024-11-09 06:14:56,805 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 356 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:14:56,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 128 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1232 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 06:14:56,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5494 states. [2024-11-09 06:14:57,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5494 to 3222. [2024-11-09 06:14:57,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3222 states, 3221 states have (on average 3.6429680223533065) internal successors, (11734), 3221 states have internal predecessors, (11734), 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) [2024-11-09 06:14:57,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 11734 transitions. [2024-11-09 06:14:57,896 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 11734 transitions. Word has length 45 [2024-11-09 06:14:57,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:14:57,896 INFO L471 AbstractCegarLoop]: Abstraction has 3222 states and 11734 transitions. [2024-11-09 06:14:57,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-09 06:14:57,896 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 11734 transitions. [2024-11-09 06:14:57,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:14:57,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:14:57,901 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:14:57,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-09 06:14:58,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:14:58,101 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:14:58,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:14:58,102 INFO L85 PathProgramCache]: Analyzing trace with hash -117113339, now seen corresponding path program 2 times [2024-11-09 06:14:58,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:14:58,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139798257] [2024-11-09 06:14:58,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:14:58,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:14:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:59,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:14:59,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:14:59,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139798257] [2024-11-09 06:14:59,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139798257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:14:59,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960571966] [2024-11-09 06:14:59,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:14:59,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:14:59,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:14:59,365 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:14:59,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 06:14:59,521 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 06:14:59,521 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:14:59,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 06:14:59,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:15:00,520 INFO L349 Elim1Store]: treesize reduction 3, result has 98.3 percent of original size [2024-11-09 06:15:00,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 151 treesize of output 256 [2024-11-09 06:15:01,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:15:01,337 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:15:01,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960571966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:15:01,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:15:01,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [20] total 31 [2024-11-09 06:15:01,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913711211] [2024-11-09 06:15:01,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:15:01,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 06:15:01,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:15:01,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 06:15:01,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=837, Unknown=0, NotChecked=0, Total=930 [2024-11-09 06:15:01,339 INFO L87 Difference]: Start difference. First operand 3222 states and 11734 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-09 06:15:05,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:15:05,740 INFO L93 Difference]: Finished difference Result 5142 states and 18715 transitions. [2024-11-09 06:15:05,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 06:15:05,740 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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 45 [2024-11-09 06:15:05,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:15:05,759 INFO L225 Difference]: With dead ends: 5142 [2024-11-09 06:15:05,759 INFO L226 Difference]: Without dead ends: 5094 [2024-11-09 06:15:05,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=241, Invalid=1651, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 06:15:05,761 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 180 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:15:05,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 155 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 06:15:05,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5094 states. [2024-11-09 06:15:06,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5094 to 3276. [2024-11-09 06:15:06,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3276 states, 3275 states have (on average 3.635114503816794) internal successors, (11905), 3275 states have internal predecessors, (11905), 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) [2024-11-09 06:15:06,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3276 states to 3276 states and 11905 transitions. [2024-11-09 06:15:06,825 INFO L78 Accepts]: Start accepts. Automaton has 3276 states and 11905 transitions. Word has length 45 [2024-11-09 06:15:06,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:15:06,825 INFO L471 AbstractCegarLoop]: Abstraction has 3276 states and 11905 transitions. [2024-11-09 06:15:06,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-09 06:15:06,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3276 states and 11905 transitions. [2024-11-09 06:15:06,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:15:06,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:15:06,830 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:15:06,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-09 06:15:07,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-11-09 06:15:07,031 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:15:07,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:15:07,031 INFO L85 PathProgramCache]: Analyzing trace with hash 238242105, now seen corresponding path program 3 times [2024-11-09 06:15:07,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:15:07,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672490948] [2024-11-09 06:15:07,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:15:07,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:15:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:15:08,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:15:08,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:15:08,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672490948] [2024-11-09 06:15:08,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672490948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:15:08,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417798480] [2024-11-09 06:15:08,335 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 06:15:08,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:15:08,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:15:08,336 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:15:08,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 06:15:08,478 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 06:15:08,479 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:15:08,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 06:15:08,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:15:09,831 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:15:09,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 187 treesize of output 211 [2024-11-09 06:15:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:15:10,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:15:11,315 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-11-09 06:15:11,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 211 [2024-11-09 06:15:23,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:15:23,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417798480] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:15:23,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:15:23,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [22, 18] total 49 [2024-11-09 06:15:23,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408098308] [2024-11-09 06:15:23,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:15:23,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 06:15:23,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:15:23,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 06:15:23,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2148, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 06:15:23,555 INFO L87 Difference]: Start difference. First operand 3276 states and 11905 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-09 06:15:28,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:15:28,956 INFO L93 Difference]: Finished difference Result 5636 states and 20884 transitions. [2024-11-09 06:15:28,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 06:15:28,957 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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 45 [2024-11-09 06:15:28,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:15:28,977 INFO L225 Difference]: With dead ends: 5636 [2024-11-09 06:15:28,977 INFO L226 Difference]: Without dead ends: 5603 [2024-11-09 06:15:28,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1312 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=373, Invalid=3787, Unknown=0, NotChecked=0, Total=4160 [2024-11-09 06:15:28,979 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 336 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:15:28,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 113 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 06:15:28,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5603 states. [2024-11-09 06:15:30,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5603 to 3376. [2024-11-09 06:15:30,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3376 states, 3375 states have (on average 3.6317037037037037) internal successors, (12257), 3375 states have internal predecessors, (12257), 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) [2024-11-09 06:15:30,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 12257 transitions. [2024-11-09 06:15:30,161 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 12257 transitions. Word has length 45 [2024-11-09 06:15:30,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:15:30,161 INFO L471 AbstractCegarLoop]: Abstraction has 3376 states and 12257 transitions. [2024-11-09 06:15:30,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-09 06:15:30,162 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 12257 transitions. [2024-11-09 06:15:30,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:15:30,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:15:30,167 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:15:30,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-09 06:15:30,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-11-09 06:15:30,367 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:15:30,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:15:30,368 INFO L85 PathProgramCache]: Analyzing trace with hash 253085783, now seen corresponding path program 4 times [2024-11-09 06:15:30,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:15:30,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679895814] [2024-11-09 06:15:30,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:15:30,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:15:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:15:31,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:15:31,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:15:31,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679895814] [2024-11-09 06:15:31,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679895814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:15:31,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488337791] [2024-11-09 06:15:31,882 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 06:15:31,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:15:31,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:15:31,883 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:15:31,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-09 06:15:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:15:32,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 06:15:32,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:15:33,334 INFO L349 Elim1Store]: treesize reduction 3, result has 98.3 percent of original size [2024-11-09 06:15:33,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 175 treesize of output 264 [2024-11-09 06:15:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:15:33,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:15:34,884 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-11-09 06:15:34,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 211 [2024-11-09 06:15:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:15:41,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488337791] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:15:41,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:15:41,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [20, 18] total 47 [2024-11-09 06:15:41,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676695078] [2024-11-09 06:15:41,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:15:41,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 06:15:41,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:15:41,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 06:15:41,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1961, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 06:15:41,690 INFO L87 Difference]: Start difference. First operand 3376 states and 12257 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:15:48,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:15:48,242 INFO L93 Difference]: Finished difference Result 5815 states and 21580 transitions. [2024-11-09 06:15:48,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 06:15:48,242 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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 45 [2024-11-09 06:15:48,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:15:48,261 INFO L225 Difference]: With dead ends: 5815 [2024-11-09 06:15:48,261 INFO L226 Difference]: Without dead ends: 5764 [2024-11-09 06:15:48,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1407 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=439, Invalid=3983, Unknown=0, NotChecked=0, Total=4422 [2024-11-09 06:15:48,263 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 388 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:15:48,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 109 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 06:15:48,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5764 states. [2024-11-09 06:15:49,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5764 to 3424. [2024-11-09 06:15:49,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3424 states, 3423 states have (on average 3.638036809815951) internal successors, (12453), 3423 states have internal predecessors, (12453), 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) [2024-11-09 06:15:49,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 12453 transitions. [2024-11-09 06:15:49,437 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 12453 transitions. Word has length 45 [2024-11-09 06:15:49,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:15:49,437 INFO L471 AbstractCegarLoop]: Abstraction has 3424 states and 12453 transitions. [2024-11-09 06:15:49,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:15:49,438 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 12453 transitions. [2024-11-09 06:15:49,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:15:49,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:15:49,443 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:15:49,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-09 06:15:49,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-11-09 06:15:49,643 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:15:49,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:15:49,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1706932387, now seen corresponding path program 5 times [2024-11-09 06:15:49,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:15:49,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917038164] [2024-11-09 06:15:49,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:15:49,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:15:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:15:50,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:15:50,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:15:50,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917038164] [2024-11-09 06:15:50,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917038164] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:15:50,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617750500] [2024-11-09 06:15:50,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:15:50,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:15:50,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:15:50,790 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:15:50,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-09 06:15:50,935 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 06:15:50,935 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:15:50,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 06:15:50,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:15:51,697 INFO L349 Elim1Store]: treesize reduction 3, result has 98.3 percent of original size [2024-11-09 06:15:51,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 175 treesize of output 264 [2024-11-09 06:15:52,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:15:52,235 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:15:52,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617750500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:15:52,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:15:52,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [19] total 31 [2024-11-09 06:15:52,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28589563] [2024-11-09 06:15:52,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:15:52,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 06:15:52,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:15:52,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 06:15:52,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=827, Unknown=0, NotChecked=0, Total=930 [2024-11-09 06:15:52,236 INFO L87 Difference]: Start difference. First operand 3424 states and 12453 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:15:56,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:15:56,288 INFO L93 Difference]: Finished difference Result 5063 states and 18884 transitions. [2024-11-09 06:15:56,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 06:15:56,288 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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 45 [2024-11-09 06:15:56,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:15:56,306 INFO L225 Difference]: With dead ends: 5063 [2024-11-09 06:15:56,306 INFO L226 Difference]: Without dead ends: 5015 [2024-11-09 06:15:56,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=238, Invalid=1654, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 06:15:56,307 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 151 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:15:56,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 169 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 06:15:56,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5015 states. [2024-11-09 06:15:57,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5015 to 3538. [2024-11-09 06:15:57,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3537 states have (on average 3.652813118461973) internal successors, (12920), 3537 states have internal predecessors, (12920), 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) [2024-11-09 06:15:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 12920 transitions. [2024-11-09 06:15:57,563 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 12920 transitions. Word has length 45 [2024-11-09 06:15:57,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:15:57,564 INFO L471 AbstractCegarLoop]: Abstraction has 3538 states and 12920 transitions. [2024-11-09 06:15:57,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:15:57,564 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 12920 transitions. [2024-11-09 06:15:57,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:15:57,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:15:57,569 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:15:57,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-09 06:15:57,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-11-09 06:15:57,770 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:15:57,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:15:57,770 INFO L85 PathProgramCache]: Analyzing trace with hash -2107311069, now seen corresponding path program 6 times [2024-11-09 06:15:57,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:15:57,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395686280] [2024-11-09 06:15:57,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:15:57,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:15:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:15:59,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:15:59,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:15:59,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395686280] [2024-11-09 06:15:59,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395686280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:15:59,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108984534] [2024-11-09 06:15:59,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 06:15:59,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:15:59,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:15:59,354 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:15:59,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-09 06:15:59,508 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 06:15:59,508 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:15:59,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-09 06:15:59,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:16:00,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:16:00,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 139 treesize of output 195 [2024-11-09 06:16:01,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:16:01,132 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:16:01,878 INFO L349 Elim1Store]: treesize reduction 4, result has 98.0 percent of original size [2024-11-09 06:16:01,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 52 treesize of output 212 [2024-11-09 06:16:12,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:16:12,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108984534] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:16:12,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:16:12,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [22, 17] total 47 [2024-11-09 06:16:12,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047618741] [2024-11-09 06:16:12,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:16:12,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:16:12,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:16:12,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:16:12,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1971, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 06:16:12,049 INFO L87 Difference]: Start difference. First operand 3538 states and 12920 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 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) [2024-11-09 06:16:18,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:16:18,257 INFO L93 Difference]: Finished difference Result 5877 states and 21770 transitions. [2024-11-09 06:16:18,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 06:16:18,257 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 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 45 [2024-11-09 06:16:18,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:16:18,276 INFO L225 Difference]: With dead ends: 5877 [2024-11-09 06:16:18,276 INFO L226 Difference]: Without dead ends: 5826 [2024-11-09 06:16:18,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=392, Invalid=3898, Unknown=0, NotChecked=0, Total=4290 [2024-11-09 06:16:18,280 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 353 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:16:18,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 95 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 06:16:18,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5826 states. [2024-11-09 06:16:19,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5826 to 3462. [2024-11-09 06:16:19,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3462 states, 3461 states have (on average 3.650967928344409) internal successors, (12636), 3461 states have internal predecessors, (12636), 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) [2024-11-09 06:16:19,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 12636 transitions. [2024-11-09 06:16:19,509 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 12636 transitions. Word has length 45 [2024-11-09 06:16:19,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:16:19,510 INFO L471 AbstractCegarLoop]: Abstraction has 3462 states and 12636 transitions. [2024-11-09 06:16:19,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 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) [2024-11-09 06:16:19,510 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 12636 transitions. [2024-11-09 06:16:19,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:16:19,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:16:19,515 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:16:19,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-09 06:16:19,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-11-09 06:16:19,716 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:16:19,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:16:19,716 INFO L85 PathProgramCache]: Analyzing trace with hash 227638057, now seen corresponding path program 7 times [2024-11-09 06:16:19,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:16:19,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93842760] [2024-11-09 06:16:19,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:16:19,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:16:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:16:20,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:16:20,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:16:20,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93842760] [2024-11-09 06:16:20,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93842760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:16:20,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561546263] [2024-11-09 06:16:20,967 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 06:16:20,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:16:20,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:16:20,968 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:16:20,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-09 06:16:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:16:21,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 06:16:21,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:16:22,266 INFO L349 Elim1Store]: treesize reduction 3, result has 98.3 percent of original size [2024-11-09 06:16:22,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 175 treesize of output 264 [2024-11-09 06:16:23,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:16:23,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:16:24,118 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-11-09 06:16:24,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 211 [2024-11-09 06:16:30,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:16:30,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561546263] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:16:30,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:16:30,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [22, 17] total 49 [2024-11-09 06:16:30,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022146593] [2024-11-09 06:16:30,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:16:30,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 06:16:30,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:16:30,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 06:16:30,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=2124, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 06:16:30,493 INFO L87 Difference]: Start difference. First operand 3462 states and 12636 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:16:32,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:16:41,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:16:43,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:16:48,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:16:50,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:16:52,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:16:54,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:16:56,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:16:58,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:17:00,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:17:03,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:17:05,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:17:07,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:17:09,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:17:11,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:17:13,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:17:15,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:17:18,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:17:20,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:17:25,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:17:27,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:17:30,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:17:32,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:17:34,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:17:37,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:17:39,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:17:41,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:17:43,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:17:44,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:17:44,619 INFO L93 Difference]: Finished difference Result 5755 states and 21407 transitions. [2024-11-09 06:17:44,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 06:17:44,620 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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 45 [2024-11-09 06:17:44,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:17:44,639 INFO L225 Difference]: With dead ends: 5755 [2024-11-09 06:17:44,639 INFO L226 Difference]: Without dead ends: 5722 [2024-11-09 06:17:44,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1612 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=458, Invalid=4368, Unknown=4, NotChecked=0, Total=4830 [2024-11-09 06:17:44,641 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 298 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 30 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:17:44,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 120 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1282 Invalid, 28 Unknown, 0 Unchecked, 60.4s Time] [2024-11-09 06:17:44,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5722 states. [2024-11-09 06:17:45,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5722 to 3494. [2024-11-09 06:17:45,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3494 states, 3493 states have (on average 3.654165473804752) internal successors, (12764), 3493 states have internal predecessors, (12764), 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) [2024-11-09 06:17:45,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3494 states to 3494 states and 12764 transitions. [2024-11-09 06:17:45,922 INFO L78 Accepts]: Start accepts. Automaton has 3494 states and 12764 transitions. Word has length 45 [2024-11-09 06:17:45,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:17:45,923 INFO L471 AbstractCegarLoop]: Abstraction has 3494 states and 12764 transitions. [2024-11-09 06:17:45,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:17:45,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3494 states and 12764 transitions. [2024-11-09 06:17:45,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:17:45,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:17:45,928 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:17:45,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-09 06:17:46,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-11-09 06:17:46,128 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:17:46,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:17:46,129 INFO L85 PathProgramCache]: Analyzing trace with hash 242481735, now seen corresponding path program 8 times [2024-11-09 06:17:46,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:17:46,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569809239] [2024-11-09 06:17:46,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:17:46,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:17:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:17:48,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:17:48,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:17:48,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569809239] [2024-11-09 06:17:48,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569809239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:17:48,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125591483] [2024-11-09 06:17:48,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:17:48,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:17:48,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:17:48,067 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:17:48,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-09 06:17:48,211 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 06:17:48,211 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:17:48,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 06:17:48,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:17:49,149 INFO L349 Elim1Store]: treesize reduction 3, result has 98.3 percent of original size [2024-11-09 06:17:49,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 175 treesize of output 264 [2024-11-09 06:17:49,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:17:49,866 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:17:49,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125591483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:17:49,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:17:49,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [22] total 34 [2024-11-09 06:17:49,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783135767] [2024-11-09 06:17:49,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:17:49,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 06:17:49,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:17:49,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 06:17:49,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 06:17:49,867 INFO L87 Difference]: Start difference. First operand 3494 states and 12764 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:17:54,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:17:54,819 INFO L93 Difference]: Finished difference Result 5191 states and 19354 transitions. [2024-11-09 06:17:54,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 06:17:54,820 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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 45 [2024-11-09 06:17:54,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:17:54,839 INFO L225 Difference]: With dead ends: 5191 [2024-11-09 06:17:54,839 INFO L226 Difference]: Without dead ends: 5139 [2024-11-09 06:17:54,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=275, Invalid=2077, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 06:17:54,841 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 124 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:17:54,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 170 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 06:17:54,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5139 states. [2024-11-09 06:17:56,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5139 to 3526. [2024-11-09 06:17:56,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3525 states have (on average 3.6459574468085107) internal successors, (12852), 3525 states have internal predecessors, (12852), 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) [2024-11-09 06:17:56,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 12852 transitions. [2024-11-09 06:17:56,168 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 12852 transitions. Word has length 45 [2024-11-09 06:17:56,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:17:56,169 INFO L471 AbstractCegarLoop]: Abstraction has 3526 states and 12852 transitions. [2024-11-09 06:17:56,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:17:56,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 12852 transitions. [2024-11-09 06:17:56,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:17:56,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:17:56,174 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:17:56,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-09 06:17:56,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-11-09 06:17:56,374 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:17:56,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:17:56,375 INFO L85 PathProgramCache]: Analyzing trace with hash 13896527, now seen corresponding path program 9 times [2024-11-09 06:17:56,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:17:56,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171921646] [2024-11-09 06:17:56,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:17:56,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:17:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:17:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:17:57,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:17:57,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171921646] [2024-11-09 06:17:57,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171921646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:17:57,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815461100] [2024-11-09 06:17:57,451 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 06:17:57,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:17:57,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:17:57,452 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:17:57,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-09 06:17:57,601 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 06:17:57,601 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:17:57,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 06:17:57,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:17:58,953 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:17:58,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 187 treesize of output 211 [2024-11-09 06:17:59,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:17:59,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:18:00,635 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-11-09 06:18:00,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 211 [2024-11-09 06:18:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:18:09,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815461100] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:18:09,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:18:09,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19, 18] total 46 [2024-11-09 06:18:09,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183864116] [2024-11-09 06:18:09,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:09,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 06:18:09,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:09,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 06:18:09,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2024-11-09 06:18:09,344 INFO L87 Difference]: Start difference. First operand 3526 states and 12852 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-09 06:18:16,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:16,336 INFO L93 Difference]: Finished difference Result 5710 states and 21225 transitions. [2024-11-09 06:18:16,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 06:18:16,337 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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 45 [2024-11-09 06:18:16,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:16,356 INFO L225 Difference]: With dead ends: 5710 [2024-11-09 06:18:16,356 INFO L226 Difference]: Without dead ends: 5670 [2024-11-09 06:18:16,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1445 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=432, Invalid=3858, Unknown=0, NotChecked=0, Total=4290 [2024-11-09 06:18:16,357 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 363 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:16,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 115 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 06:18:16,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5670 states. [2024-11-09 06:18:17,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5670 to 3538. [2024-11-09 06:18:17,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3537 states have (on average 3.643765903307888) internal successors, (12888), 3537 states have internal predecessors, (12888), 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) [2024-11-09 06:18:17,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 12888 transitions. [2024-11-09 06:18:17,686 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 12888 transitions. Word has length 45 [2024-11-09 06:18:17,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:17,686 INFO L471 AbstractCegarLoop]: Abstraction has 3538 states and 12888 transitions. [2024-11-09 06:18:17,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-09 06:18:17,686 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 12888 transitions. [2024-11-09 06:18:17,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:18:17,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:17,691 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:17,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-09 06:18:17,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:17,892 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:18:17,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:17,892 INFO L85 PathProgramCache]: Analyzing trace with hash 542159979, now seen corresponding path program 10 times [2024-11-09 06:18:17,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:18:17,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732685260] [2024-11-09 06:18:17,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:17,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:18:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:19,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:19,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:18:19,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732685260] [2024-11-09 06:18:19,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732685260] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:18:19,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78658447] [2024-11-09 06:18:19,455 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 06:18:19,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:18:19,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:18:19,456 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:18:19,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-09 06:18:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:19,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 06:18:19,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:21,126 INFO L349 Elim1Store]: treesize reduction 3, result has 98.3 percent of original size [2024-11-09 06:18:21,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 151 treesize of output 256 [2024-11-09 06:18:21,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:18:21,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:18:23,026 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-11-09 06:18:23,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 211 [2024-11-09 06:18:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:18:31,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78658447] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:18:31,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:18:31,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [21, 16] total 46 [2024-11-09 06:18:31,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492707452] [2024-11-09 06:18:31,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:31,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 06:18:31,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:18:31,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 06:18:31,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1878, Unknown=0, NotChecked=0, Total=2070 [2024-11-09 06:18:31,734 INFO L87 Difference]: Start difference. First operand 3538 states and 12888 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-09 06:18:38,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:18:40,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:18:42,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:18:45,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:18:52,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:18:54,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:18:56,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:18:58,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:00,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:02,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:04,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:06,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:08,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:10,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:13,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:15,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:17,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:19,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:21,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:23,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:25,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:27,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:30,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:32,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:34,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:36,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:38,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:40,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:42,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:45,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:47,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:49,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:52,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:54,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:56,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:19:58,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:20:00,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:20:01,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:01,973 INFO L93 Difference]: Finished difference Result 5734 states and 21430 transitions. [2024-11-09 06:20:01,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 06:20:01,973 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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 45 [2024-11-09 06:20:01,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:01,997 INFO L225 Difference]: With dead ends: 5734 [2024-11-09 06:20:01,997 INFO L226 Difference]: Without dead ends: 5701 [2024-11-09 06:20:01,999 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=380, Invalid=3523, Unknown=3, NotChecked=0, Total=3906 [2024-11-09 06:20:01,999 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 247 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 26 mSolverCounterUnsat, 37 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 37 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:01,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 151 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1242 Invalid, 37 Unknown, 0 Unchecked, 78.2s Time] [2024-11-09 06:20:02,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5701 states. [2024-11-09 06:20:03,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5701 to 3526. [2024-11-09 06:20:03,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3525 states have (on average 3.641418439716312) internal successors, (12836), 3525 states have internal predecessors, (12836), 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) [2024-11-09 06:20:03,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 12836 transitions. [2024-11-09 06:20:03,527 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 12836 transitions. Word has length 45 [2024-11-09 06:20:03,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:03,527 INFO L471 AbstractCegarLoop]: Abstraction has 3526 states and 12836 transitions. [2024-11-09 06:20:03,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-09 06:20:03,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 12836 transitions. [2024-11-09 06:20:03,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:20:03,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:03,533 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:20:03,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-09 06:20:03,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:20:03,734 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:20:03,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:03,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1348163683, now seen corresponding path program 11 times [2024-11-09 06:20:03,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:20:03,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351720747] [2024-11-09 06:20:03,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:03,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:20:05,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:20:05,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351720747] [2024-11-09 06:20:05,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351720747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:20:05,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327799915] [2024-11-09 06:20:05,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:20:05,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:20:05,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:20:05,195 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:20:05,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-09 06:20:05,352 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 06:20:05,352 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:20:05,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 06:20:05,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:20:06,507 INFO L349 Elim1Store]: treesize reduction 3, result has 98.3 percent of original size [2024-11-09 06:20:06,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 175 treesize of output 264 [2024-11-09 06:20:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:20:07,438 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:20:07,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327799915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:20:07,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:20:07,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [21] total 33 [2024-11-09 06:20:07,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414006104] [2024-11-09 06:20:07,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:20:07,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 06:20:07,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:20:07,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 06:20:07,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=949, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 06:20:07,440 INFO L87 Difference]: Start difference. First operand 3526 states and 12836 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:20:13,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:13,467 INFO L93 Difference]: Finished difference Result 5163 states and 19130 transitions. [2024-11-09 06:20:13,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 06:20:13,467 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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 45 [2024-11-09 06:20:13,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:13,485 INFO L225 Difference]: With dead ends: 5163 [2024-11-09 06:20:13,485 INFO L226 Difference]: Without dead ends: 5111 [2024-11-09 06:20:13,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=300, Invalid=2150, Unknown=0, NotChecked=0, Total=2450 [2024-11-09 06:20:13,486 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 142 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:13,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 137 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 06:20:13,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5111 states. [2024-11-09 06:20:14,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5111 to 3510. [2024-11-09 06:20:14,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 3509 states have (on average 3.6312339697919636) internal successors, (12742), 3509 states have internal predecessors, (12742), 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) [2024-11-09 06:20:14,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 12742 transitions. [2024-11-09 06:20:14,814 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 12742 transitions. Word has length 45 [2024-11-09 06:20:14,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:14,815 INFO L471 AbstractCegarLoop]: Abstraction has 3510 states and 12742 transitions. [2024-11-09 06:20:14,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:20:14,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 12742 transitions. [2024-11-09 06:20:14,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:20:14,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:14,820 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:20:14,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-09 06:20:15,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:20:15,023 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:20:15,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:15,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1293335777, now seen corresponding path program 12 times [2024-11-09 06:20:15,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:20:15,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094882261] [2024-11-09 06:20:15,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:15,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:20:16,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:20:16,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094882261] [2024-11-09 06:20:16,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094882261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:20:16,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704989318] [2024-11-09 06:20:16,483 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 06:20:16,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:20:16,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:20:16,484 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:20:16,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-09 06:20:16,639 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 06:20:16,639 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:20:16,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-09 06:20:16,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:20:19,401 INFO L349 Elim1Store]: treesize reduction 4, result has 96.7 percent of original size [2024-11-09 06:20:19,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 199 treesize of output 211 [2024-11-09 06:20:19,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:20:19,820 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:20:20,937 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-11-09 06:20:20,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 211 [2024-11-09 06:20:32,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:20:32,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704989318] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:20:32,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:20:32,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [20, 19] total 49 [2024-11-09 06:20:32,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906037663] [2024-11-09 06:20:32,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:20:32,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 06:20:32,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:20:32,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 06:20:32,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2136, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 06:20:32,363 INFO L87 Difference]: Start difference. First operand 3510 states and 12742 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:20:38,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:38,909 INFO L93 Difference]: Finished difference Result 6058 states and 22090 transitions. [2024-11-09 06:20:38,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 06:20:38,910 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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 45 [2024-11-09 06:20:38,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:38,930 INFO L225 Difference]: With dead ends: 6058 [2024-11-09 06:20:38,930 INFO L226 Difference]: Without dead ends: 6022 [2024-11-09 06:20:38,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=342, Invalid=3690, Unknown=0, NotChecked=0, Total=4032 [2024-11-09 06:20:38,932 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 381 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:38,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 106 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 06:20:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6022 states. [2024-11-09 06:20:40,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6022 to 3538. [2024-11-09 06:20:40,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3537 states have (on average 3.625106022052587) internal successors, (12822), 3537 states have internal predecessors, (12822), 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) [2024-11-09 06:20:40,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 12822 transitions. [2024-11-09 06:20:40,326 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 12822 transitions. Word has length 45 [2024-11-09 06:20:40,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:40,327 INFO L471 AbstractCegarLoop]: Abstraction has 3538 states and 12822 transitions. [2024-11-09 06:20:40,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:20:40,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 12822 transitions. [2024-11-09 06:20:40,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:20:40,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:40,332 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:20:40,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-09 06:20:40,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:20:40,533 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:20:40,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:40,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1181438947, now seen corresponding path program 13 times [2024-11-09 06:20:40,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:20:40,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419568855] [2024-11-09 06:20:40,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:40,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:20:41,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:20:41,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419568855] [2024-11-09 06:20:41,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419568855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:20:41,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275065984] [2024-11-09 06:20:41,989 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 06:20:41,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:20:41,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:20:41,990 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:20:41,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-09 06:20:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:42,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 06:20:42,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:20:44,068 INFO L349 Elim1Store]: treesize reduction 3, result has 98.3 percent of original size [2024-11-09 06:20:44,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 151 treesize of output 256 [2024-11-09 06:20:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:20:44,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:20:46,083 INFO L349 Elim1Store]: treesize reduction 4, result has 98.0 percent of original size [2024-11-09 06:20:46,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 52 treesize of output 212 [2024-11-09 06:20:57,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:20:57,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275065984] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:20:57,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:20:57,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [20, 17] total 45 [2024-11-09 06:20:57,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202004988] [2024-11-09 06:20:57,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:20:57,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 06:20:57,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:20:57,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 06:20:57,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1796, Unknown=0, NotChecked=0, Total=1980 [2024-11-09 06:20:57,245 INFO L87 Difference]: Start difference. First operand 3538 states and 12822 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-09 06:21:04,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:21:04,618 INFO L93 Difference]: Finished difference Result 5950 states and 21775 transitions. [2024-11-09 06:21:04,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 06:21:04,619 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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 45 [2024-11-09 06:21:04,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:21:04,642 INFO L225 Difference]: With dead ends: 5950 [2024-11-09 06:21:04,642 INFO L226 Difference]: Without dead ends: 5915 [2024-11-09 06:21:04,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=357, Invalid=3549, Unknown=0, NotChecked=0, Total=3906 [2024-11-09 06:21:04,644 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 399 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:21:04,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 82 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 06:21:04,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5915 states. [2024-11-09 06:21:06,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5915 to 3573. [2024-11-09 06:21:06,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3573 states, 3572 states have (on average 3.620380739081747) internal successors, (12932), 3572 states have internal predecessors, (12932), 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) [2024-11-09 06:21:06,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 12932 transitions. [2024-11-09 06:21:06,099 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 12932 transitions. Word has length 45 [2024-11-09 06:21:06,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:21:06,100 INFO L471 AbstractCegarLoop]: Abstraction has 3573 states and 12932 transitions. [2024-11-09 06:21:06,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-09 06:21:06,100 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 12932 transitions. [2024-11-09 06:21:06,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:21:06,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:21:06,105 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:21:06,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-09 06:21:06,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:21:06,306 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:21:06,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:21:06,306 INFO L85 PathProgramCache]: Analyzing trace with hash 364189637, now seen corresponding path program 14 times [2024-11-09 06:21:06,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:21:06,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16226533] [2024-11-09 06:21:06,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:21:06,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:21:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:21:07,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:21:07,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:21:07,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16226533] [2024-11-09 06:21:07,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16226533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:21:07,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639276964] [2024-11-09 06:21:07,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:21:07,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:21:07,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:21:07,683 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:21:07,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-09 06:21:07,836 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 06:21:07,836 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:21:07,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 06:21:07,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:21:09,522 INFO L349 Elim1Store]: treesize reduction 3, result has 98.3 percent of original size [2024-11-09 06:21:09,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 175 treesize of output 264 [2024-11-09 06:21:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:21:10,372 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:21:10,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639276964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:21:10,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:21:10,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [22] total 34 [2024-11-09 06:21:10,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801985071] [2024-11-09 06:21:10,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:21:10,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 06:21:10,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:21:10,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 06:21:10,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 06:21:10,374 INFO L87 Difference]: Start difference. First operand 3573 states and 12932 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:21:18,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:21:18,609 INFO L93 Difference]: Finished difference Result 5852 states and 21115 transitions. [2024-11-09 06:21:18,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 06:21:18,609 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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 45 [2024-11-09 06:21:18,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:21:18,629 INFO L225 Difference]: With dead ends: 5852 [2024-11-09 06:21:18,629 INFO L226 Difference]: Without dead ends: 5790 [2024-11-09 06:21:18,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=259, Invalid=1997, Unknown=0, NotChecked=0, Total=2256 [2024-11-09 06:21:18,630 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 180 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:21:18,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 195 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 06:21:18,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5790 states. [2024-11-09 06:21:20,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5790 to 3667. [2024-11-09 06:21:20,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3667 states, 3666 states have (on average 3.6104746317512273) internal successors, (13236), 3666 states have internal predecessors, (13236), 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) [2024-11-09 06:21:20,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3667 states to 3667 states and 13236 transitions. [2024-11-09 06:21:20,098 INFO L78 Accepts]: Start accepts. Automaton has 3667 states and 13236 transitions. Word has length 45 [2024-11-09 06:21:20,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:21:20,099 INFO L471 AbstractCegarLoop]: Abstraction has 3667 states and 13236 transitions. [2024-11-09 06:21:20,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:21:20,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3667 states and 13236 transitions. [2024-11-09 06:21:20,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:21:20,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:21:20,105 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:21:20,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-09 06:21:20,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:21:20,306 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:21:20,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:21:20,306 INFO L85 PathProgramCache]: Analyzing trace with hash 788345145, now seen corresponding path program 15 times [2024-11-09 06:21:20,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:21:20,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300744732] [2024-11-09 06:21:20,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:21:20,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:21:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:21:21,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:21:21,614 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:21:21,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300744732] [2024-11-09 06:21:21,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300744732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:21:21,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579648587] [2024-11-09 06:21:21,614 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 06:21:21,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:21:21,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:21:21,615 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:21:21,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-09 06:21:21,778 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 06:21:21,778 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:21:21,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 06:21:21,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:21:23,609 INFO L349 Elim1Store]: treesize reduction 4, result has 96.7 percent of original size [2024-11-09 06:21:23,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 151 treesize of output 195 [2024-11-09 06:21:24,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:21:24,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:21:25,953 INFO L349 Elim1Store]: treesize reduction 4, result has 98.0 percent of original size [2024-11-09 06:21:25,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 52 treesize of output 212 [2024-11-09 06:21:34,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:21:34,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579648587] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:21:34,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:21:34,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19, 18] total 46 [2024-11-09 06:21:34,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687012126] [2024-11-09 06:21:34,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:21:34,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 06:21:34,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:21:34,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 06:21:34,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1881, Unknown=0, NotChecked=0, Total=2070 [2024-11-09 06:21:34,743 INFO L87 Difference]: Start difference. First operand 3667 states and 13236 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-09 06:21:43,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:21:43,918 INFO L93 Difference]: Finished difference Result 6012 states and 21993 transitions. [2024-11-09 06:21:43,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 06:21:43,919 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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 45 [2024-11-09 06:21:43,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:21:43,939 INFO L225 Difference]: With dead ends: 6012 [2024-11-09 06:21:43,939 INFO L226 Difference]: Without dead ends: 5979 [2024-11-09 06:21:43,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1508 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=409, Invalid=4147, Unknown=0, NotChecked=0, Total=4556 [2024-11-09 06:21:43,941 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 310 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:21:43,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 114 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 06:21:43,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5979 states. [2024-11-09 06:21:45,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5979 to 3681. [2024-11-09 06:21:45,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 3680 states have (on average 3.611141304347826) internal successors, (13289), 3680 states have internal predecessors, (13289), 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) [2024-11-09 06:21:45,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 13289 transitions. [2024-11-09 06:21:45,396 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 13289 transitions. Word has length 45 [2024-11-09 06:21:45,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:21:45,397 INFO L471 AbstractCegarLoop]: Abstraction has 3681 states and 13289 transitions. [2024-11-09 06:21:45,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-09 06:21:45,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 13289 transitions. [2024-11-09 06:21:45,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:21:45,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:21:45,402 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:21:45,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-09 06:21:45,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2024-11-09 06:21:45,603 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:21:45,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:21:45,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1223420311, now seen corresponding path program 16 times [2024-11-09 06:21:45,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:21:45,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737045016] [2024-11-09 06:21:45,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:21:45,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:21:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:21:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:21:47,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:21:47,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737045016] [2024-11-09 06:21:47,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737045016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:21:47,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454942609] [2024-11-09 06:21:47,337 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 06:21:47,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:21:47,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:21:47,339 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:21:47,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-09 06:21:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:21:47,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 06:21:47,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:21:48,985 INFO L349 Elim1Store]: treesize reduction 3, result has 98.3 percent of original size [2024-11-09 06:21:48,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 151 treesize of output 256 [2024-11-09 06:21:49,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:21:49,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:21:51,544 INFO L349 Elim1Store]: treesize reduction 4, result has 98.0 percent of original size [2024-11-09 06:21:51,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 52 treesize of output 212 [2024-11-09 06:21:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:21:55,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454942609] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:21:55,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:21:55,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [20, 17] total 45 [2024-11-09 06:21:55,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037549611] [2024-11-09 06:21:55,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:21:55,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 06:21:55,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:21:55,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 06:21:55,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1795, Unknown=0, NotChecked=0, Total=1980 [2024-11-09 06:21:55,761 INFO L87 Difference]: Start difference. First operand 3681 states and 13289 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-09 06:22:05,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:05,435 INFO L93 Difference]: Finished difference Result 6003 states and 21967 transitions. [2024-11-09 06:22:05,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 06:22:05,435 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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 45 [2024-11-09 06:22:05,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:05,456 INFO L225 Difference]: With dead ends: 6003 [2024-11-09 06:22:05,456 INFO L226 Difference]: Without dead ends: 5964 [2024-11-09 06:22:05,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=416, Invalid=4006, Unknown=0, NotChecked=0, Total=4422 [2024-11-09 06:22:05,458 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 340 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:05,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 103 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 06:22:05,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5964 states. [2024-11-09 06:22:06,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5964 to 3681. [2024-11-09 06:22:06,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 3680 states have (on average 3.6105978260869565) internal successors, (13287), 3680 states have internal predecessors, (13287), 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) [2024-11-09 06:22:06,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 13287 transitions. [2024-11-09 06:22:06,985 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 13287 transitions. Word has length 45 [2024-11-09 06:22:06,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:06,985 INFO L471 AbstractCegarLoop]: Abstraction has 3681 states and 13287 transitions. [2024-11-09 06:22:06,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-09 06:22:06,986 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 13287 transitions. [2024-11-09 06:22:06,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:22:06,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:06,991 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:22:07,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-09 06:22:07,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:22:07,192 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:22:07,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:07,192 INFO L85 PathProgramCache]: Analyzing trace with hash -2011215337, now seen corresponding path program 17 times [2024-11-09 06:22:07,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:22:07,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100000152] [2024-11-09 06:22:07,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:07,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:09,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:22:09,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:22:09,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100000152] [2024-11-09 06:22:09,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100000152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:22:09,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081282020] [2024-11-09 06:22:09,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:22:09,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:22:09,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:22:09,017 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:22:09,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-09 06:22:09,183 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 06:22:09,183 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:22:09,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 06:22:09,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:22:10,452 INFO L349 Elim1Store]: treesize reduction 3, result has 98.3 percent of original size [2024-11-09 06:22:10,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 175 treesize of output 264 [2024-11-09 06:22:11,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:22:11,285 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:22:11,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081282020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:22:11,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:22:11,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [20] total 32 [2024-11-09 06:22:11,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124710459] [2024-11-09 06:22:11,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:22:11,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 06:22:11,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:22:11,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 06:22:11,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2024-11-09 06:22:11,287 INFO L87 Difference]: Start difference. First operand 3681 states and 13287 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:22:17,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:17,600 INFO L93 Difference]: Finished difference Result 5660 states and 20758 transitions. [2024-11-09 06:22:17,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 06:22:17,601 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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 45 [2024-11-09 06:22:17,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:17,620 INFO L225 Difference]: With dead ends: 5660 [2024-11-09 06:22:17,620 INFO L226 Difference]: Without dead ends: 5595 [2024-11-09 06:22:17,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=201, Invalid=1605, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 06:22:17,622 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 144 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:17,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 191 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 06:22:17,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2024-11-09 06:22:19,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 3693. [2024-11-09 06:22:19,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 3692 states have (on average 3.6145720476706393) internal successors, (13345), 3692 states have internal predecessors, (13345), 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) [2024-11-09 06:22:19,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 13345 transitions. [2024-11-09 06:22:19,178 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 13345 transitions. Word has length 45 [2024-11-09 06:22:19,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:19,178 INFO L471 AbstractCegarLoop]: Abstraction has 3693 states and 13345 transitions. [2024-11-09 06:22:19,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:22:19,178 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 13345 transitions. [2024-11-09 06:22:19,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:22:19,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:19,184 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:22:19,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-11-09 06:22:19,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:22:19,384 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:22:19,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:19,384 INFO L85 PathProgramCache]: Analyzing trace with hash 221507259, now seen corresponding path program 18 times [2024-11-09 06:22:19,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:22:19,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787190863] [2024-11-09 06:22:19,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:19,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:22:20,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:22:20,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787190863] [2024-11-09 06:22:20,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787190863] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:22:20,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029566047] [2024-11-09 06:22:20,694 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 06:22:20,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:22:20,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:22:20,696 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:22:20,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-09 06:22:20,860 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 06:22:20,861 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:22:20,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-09 06:22:20,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:22:22,485 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:22:22,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 211 treesize of output 219 [2024-11-09 06:22:23,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:22:23,408 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:22:25,016 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-11-09 06:22:25,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 211 [2024-11-09 06:22:34,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:22:34,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029566047] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:22:34,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:22:34,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [20, 19] total 49 [2024-11-09 06:22:34,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677977992] [2024-11-09 06:22:34,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:22:34,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 06:22:34,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:22:34,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 06:22:34,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2131, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 06:22:34,762 INFO L87 Difference]: Start difference. First operand 3693 states and 13345 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:22:42,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:42,766 INFO L93 Difference]: Finished difference Result 5753 states and 21306 transitions. [2024-11-09 06:22:42,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 06:22:42,767 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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 45 [2024-11-09 06:22:42,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:42,787 INFO L225 Difference]: With dead ends: 5753 [2024-11-09 06:22:42,787 INFO L226 Difference]: Without dead ends: 5710 [2024-11-09 06:22:42,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1483 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=411, Invalid=4145, Unknown=0, NotChecked=0, Total=4556 [2024-11-09 06:22:42,789 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 344 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:42,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 104 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 06:22:42,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5710 states. [2024-11-09 06:22:44,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5710 to 3695. [2024-11-09 06:22:44,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3695 states, 3694 states have (on average 3.6123443421765025) internal successors, (13344), 3694 states have internal predecessors, (13344), 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) [2024-11-09 06:22:44,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3695 states to 3695 states and 13344 transitions. [2024-11-09 06:22:44,332 INFO L78 Accepts]: Start accepts. Automaton has 3695 states and 13344 transitions. Word has length 45 [2024-11-09 06:22:44,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:44,332 INFO L471 AbstractCegarLoop]: Abstraction has 3695 states and 13344 transitions. [2024-11-09 06:22:44,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:22:44,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3695 states and 13344 transitions. [2024-11-09 06:22:44,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:22:44,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:44,338 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:22:44,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-11-09 06:22:44,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:22:44,538 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:22:44,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:44,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1601379929, now seen corresponding path program 19 times [2024-11-09 06:22:44,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:22:44,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004867285] [2024-11-09 06:22:44,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:44,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:46,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:22:46,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:22:46,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004867285] [2024-11-09 06:22:46,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004867285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:22:46,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338792808] [2024-11-09 06:22:46,053 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 06:22:46,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:22:46,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:22:46,055 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:22:46,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-09 06:22:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:46,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 06:22:46,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:22:47,682 INFO L349 Elim1Store]: treesize reduction 3, result has 98.3 percent of original size [2024-11-09 06:22:47,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 175 treesize of output 264 [2024-11-09 06:22:48,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:22:48,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:22:50,307 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-11-09 06:22:50,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 211 [2024-11-09 06:23:01,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:23:01,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338792808] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:23:01,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:23:01,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [22, 18] total 49 [2024-11-09 06:23:01,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488022055] [2024-11-09 06:23:01,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:23:01,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 06:23:01,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:23:01,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 06:23:01,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=2129, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 06:23:01,427 INFO L87 Difference]: Start difference. First operand 3695 states and 13344 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:23:10,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:23:10,560 INFO L93 Difference]: Finished difference Result 5853 states and 21704 transitions. [2024-11-09 06:23:10,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 06:23:10,561 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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 45 [2024-11-09 06:23:10,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:23:10,581 INFO L225 Difference]: With dead ends: 5853 [2024-11-09 06:23:10,581 INFO L226 Difference]: Without dead ends: 5818 [2024-11-09 06:23:10,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1495 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=400, Invalid=4022, Unknown=0, NotChecked=0, Total=4422 [2024-11-09 06:23:10,583 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 339 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:23:10,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 114 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 06:23:10,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5818 states. [2024-11-09 06:23:12,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5818 to 3711. [2024-11-09 06:23:12,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3711 states, 3710 states have (on average 3.615633423180593) internal successors, (13414), 3710 states have internal predecessors, (13414), 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) [2024-11-09 06:23:12,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3711 states to 3711 states and 13414 transitions. [2024-11-09 06:23:12,223 INFO L78 Accepts]: Start accepts. Automaton has 3711 states and 13414 transitions. Word has length 45 [2024-11-09 06:23:12,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:23:12,223 INFO L471 AbstractCegarLoop]: Abstraction has 3711 states and 13414 transitions. [2024-11-09 06:23:12,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:23:12,223 INFO L276 IsEmpty]: Start isEmpty. Operand 3711 states and 13414 transitions. [2024-11-09 06:23:12,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:23:12,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:23:12,229 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:23:12,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-09 06:23:12,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:12,429 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:23:12,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:23:12,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2091159109, now seen corresponding path program 20 times [2024-11-09 06:23:12,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:23:12,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520376746] [2024-11-09 06:23:12,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:12,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:23:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:13,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:23:13,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:23:13,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520376746] [2024-11-09 06:23:13,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520376746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:23:13,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755193849] [2024-11-09 06:23:13,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:23:13,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:13,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:23:13,587 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:23:13,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-09 06:23:13,750 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 06:23:13,750 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:23:13,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 06:23:13,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:23:14,887 INFO L349 Elim1Store]: treesize reduction 3, result has 98.3 percent of original size [2024-11-09 06:23:14,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 175 treesize of output 264 [2024-11-09 06:23:16,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:23:16,000 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:23:16,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755193849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:23:16,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:23:16,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [19] total 31 [2024-11-09 06:23:16,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751543717] [2024-11-09 06:23:16,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:23:16,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 06:23:16,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:23:16,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 06:23:16,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2024-11-09 06:23:16,002 INFO L87 Difference]: Start difference. First operand 3711 states and 13414 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:23:21,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:23:21,115 INFO L93 Difference]: Finished difference Result 5316 states and 19685 transitions. [2024-11-09 06:23:21,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 06:23:21,115 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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 45 [2024-11-09 06:23:21,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:23:21,136 INFO L225 Difference]: With dead ends: 5316 [2024-11-09 06:23:21,136 INFO L226 Difference]: Without dead ends: 5273 [2024-11-09 06:23:21,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=191, Invalid=1369, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 06:23:21,138 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 125 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:23:21,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 132 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 06:23:21,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5273 states. [2024-11-09 06:23:22,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5273 to 3713. [2024-11-09 06:23:22,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3713 states, 3712 states have (on average 3.6155711206896552) internal successors, (13421), 3712 states have internal predecessors, (13421), 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) [2024-11-09 06:23:22,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 13421 transitions. [2024-11-09 06:23:22,863 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 13421 transitions. Word has length 45 [2024-11-09 06:23:22,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:23:22,864 INFO L471 AbstractCegarLoop]: Abstraction has 3713 states and 13421 transitions. [2024-11-09 06:23:22,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:23:22,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 13421 transitions. [2024-11-09 06:23:22,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:23:22,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:23:22,870 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:23:22,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-09 06:23:23,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:23,071 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:23:23,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:23:23,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1685109475, now seen corresponding path program 21 times [2024-11-09 06:23:23,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:23:23,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717702621] [2024-11-09 06:23:23,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:23,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:23:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:24,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:23:24,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:23:24,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717702621] [2024-11-09 06:23:24,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717702621] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:23:24,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541928488] [2024-11-09 06:23:24,827 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 06:23:24,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:24,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:23:24,829 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:23:24,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-09 06:23:25,004 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 06:23:25,004 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:23:25,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 06:23:25,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:23:26,754 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:23:26,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 187 treesize of output 211 [2024-11-09 06:23:27,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:23:27,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:23:29,185 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-11-09 06:23:29,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 211 [2024-11-09 06:23:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:23:40,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541928488] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:23:40,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:23:40,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [20, 18] total 47 [2024-11-09 06:23:40,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745625000] [2024-11-09 06:23:40,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:23:40,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 06:23:40,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:23:40,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 06:23:40,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1968, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 06:23:40,917 INFO L87 Difference]: Start difference. First operand 3713 states and 13421 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-09 06:23:50,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:23:50,159 INFO L93 Difference]: Finished difference Result 6099 states and 22269 transitions. [2024-11-09 06:23:50,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 06:23:50,160 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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 45 [2024-11-09 06:23:50,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:23:50,182 INFO L225 Difference]: With dead ends: 6099 [2024-11-09 06:23:50,182 INFO L226 Difference]: Without dead ends: 6066 [2024-11-09 06:23:50,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1343 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=372, Invalid=4050, Unknown=0, NotChecked=0, Total=4422 [2024-11-09 06:23:50,184 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 316 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:23:50,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 109 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 06:23:50,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6066 states. [2024-11-09 06:23:51,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6066 to 3717. [2024-11-09 06:23:51,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3717 states, 3716 states have (on average 3.613832077502691) internal successors, (13429), 3716 states have internal predecessors, (13429), 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) [2024-11-09 06:23:51,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3717 states to 3717 states and 13429 transitions. [2024-11-09 06:23:51,848 INFO L78 Accepts]: Start accepts. Automaton has 3717 states and 13429 transitions. Word has length 45 [2024-11-09 06:23:51,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:23:51,848 INFO L471 AbstractCegarLoop]: Abstraction has 3717 states and 13429 transitions. [2024-11-09 06:23:51,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-09 06:23:51,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3717 states and 13429 transitions. [2024-11-09 06:23:51,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:23:51,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:23:51,854 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:23:51,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-11-09 06:23:52,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:52,054 INFO L396 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:23:52,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:23:52,055 INFO L85 PathProgramCache]: Analyzing trace with hash -53262045, now seen corresponding path program 22 times [2024-11-09 06:23:52,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:23:52,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240111858] [2024-11-09 06:23:52,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:52,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:23:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:53,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:23:53,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:23:53,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240111858] [2024-11-09 06:23:53,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240111858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:23:53,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450625629] [2024-11-09 06:23:53,262 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 06:23:53,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:53,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:23:53,263 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:23:53,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-09 06:23:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:53,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 06:23:53,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:23:54,985 INFO L349 Elim1Store]: treesize reduction 3, result has 98.3 percent of original size [2024-11-09 06:23:54,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 175 treesize of output 264 [2024-11-09 06:23:55,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:23:55,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:24:01,476 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-11-09 06:24:01,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 211 [2024-11-09 06:24:12,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:24:12,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450625629] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:24:12,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:24:12,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [19, 18] total 46 [2024-11-09 06:24:12,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126456143] [2024-11-09 06:24:12,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:24:12,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 06:24:12,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:24:12,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 06:24:12,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1873, Unknown=2, NotChecked=0, Total=2070 [2024-11-09 06:24:12,052 INFO L87 Difference]: Start difference. First operand 3717 states and 13429 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:24:17,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:24:19,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:24:21,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:24:23,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:24:25,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:24:27,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:24:29,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:24:34,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:24:37,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:24:39,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:24:41,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:24:43,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:24:45,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:24:47,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:24:49,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:24:52,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:24:54,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:24:56,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:24:58,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:25:00,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:25:02,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:25:05,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:25:07,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:25:09,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:25:11,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 06:25:16,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:25:16,389 INFO L93 Difference]: Finished difference Result 6100 states and 22363 transitions. [2024-11-09 06:25:16,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 06:25:16,389 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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 45 [2024-11-09 06:25:16,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:25:16,412 INFO L225 Difference]: With dead ends: 6100 [2024-11-09 06:25:16,412 INFO L226 Difference]: Without dead ends: 6060 [2024-11-09 06:25:16,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=434, Invalid=4393, Unknown=3, NotChecked=0, Total=4830 [2024-11-09 06:25:16,414 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 362 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 26 mSolverCounterUnsat, 25 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 25 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:25:16,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 97 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1525 Invalid, 25 Unknown, 0 Unchecked, 54.6s Time] [2024-11-09 06:25:16,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6060 states. [2024-11-09 06:25:18,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6060 to 3729. [2024-11-09 06:25:18,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3729 states, 3728 states have (on average 3.614538626609442) internal successors, (13475), 3728 states have internal predecessors, (13475), 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) [2024-11-09 06:25:18,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3729 states to 3729 states and 13475 transitions. [2024-11-09 06:25:18,084 INFO L78 Accepts]: Start accepts. Automaton has 3729 states and 13475 transitions. Word has length 45 [2024-11-09 06:25:18,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:25:18,084 INFO L471 AbstractCegarLoop]: Abstraction has 3729 states and 13475 transitions. [2024-11-09 06:25:18,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:25:18,085 INFO L276 IsEmpty]: Start isEmpty. Operand 3729 states and 13475 transitions. [2024-11-09 06:25:18,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:25:18,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:25:18,090 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:25:18,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-09 06:25:18,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:25:18,291 INFO L396 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:25:18,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:25:18,291 INFO L85 PathProgramCache]: Analyzing trace with hash 2004650497, now seen corresponding path program 23 times [2024-11-09 06:25:18,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:25:18,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112947425] [2024-11-09 06:25:18,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:25:18,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:25:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:25:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:25:19,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:25:19,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112947425] [2024-11-09 06:25:19,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112947425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:25:19,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572207876] [2024-11-09 06:25:19,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:25:19,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:25:19,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:25:19,901 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:25:19,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-09 06:25:20,067 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 06:25:20,067 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:25:20,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 06:25:20,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:25:21,073 INFO L349 Elim1Store]: treesize reduction 3, result has 98.3 percent of original size [2024-11-09 06:25:21,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 151 treesize of output 256 [2024-11-09 06:25:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:25:21,996 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:25:21,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572207876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:25:21,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:25:21,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [20] total 31 [2024-11-09 06:25:21,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863930131] [2024-11-09 06:25:21,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:25:21,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 06:25:21,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:25:21,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 06:25:21,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2024-11-09 06:25:21,997 INFO L87 Difference]: Start difference. First operand 3729 states and 13475 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-09 06:25:28,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:25:28,082 INFO L93 Difference]: Finished difference Result 5573 states and 20278 transitions. [2024-11-09 06:25:28,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 06:25:28,083 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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 45 [2024-11-09 06:25:28,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:25:28,103 INFO L225 Difference]: With dead ends: 5573 [2024-11-09 06:25:28,103 INFO L226 Difference]: Without dead ends: 5502 [2024-11-09 06:25:28,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=198, Invalid=1442, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 06:25:28,104 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 131 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:25:28,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 112 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 06:25:28,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5502 states. [2024-11-09 06:25:29,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5502 to 3627. [2024-11-09 06:25:29,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 3626 states have (on average 3.6144511858797572) internal successors, (13106), 3626 states have internal predecessors, (13106), 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) [2024-11-09 06:25:29,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 13106 transitions. [2024-11-09 06:25:29,697 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 13106 transitions. Word has length 45 [2024-11-09 06:25:29,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:25:29,698 INFO L471 AbstractCegarLoop]: Abstraction has 3627 states and 13106 transitions. [2024-11-09 06:25:29,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 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) [2024-11-09 06:25:29,698 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 13106 transitions. [2024-11-09 06:25:29,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:25:29,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:25:29,704 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:25:29,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-11-09 06:25:29,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2024-11-09 06:25:29,904 INFO L396 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:25:29,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:25:29,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1002737445, now seen corresponding path program 24 times [2024-11-09 06:25:29,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:25:29,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000077811] [2024-11-09 06:25:29,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:25:29,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:25:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:25:31,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:25:31,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:25:31,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000077811] [2024-11-09 06:25:31,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000077811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:25:31,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939657735] [2024-11-09 06:25:31,560 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 06:25:31,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:25:31,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:25:31,561 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:25:31,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-09 06:25:31,743 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 06:25:31,744 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:25:31,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-09 06:25:31,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:25:33,596 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:25:33,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 211 treesize of output 219 [2024-11-09 06:25:34,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:25:34,495 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:25:36,229 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-11-09 06:25:36,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 211 [2024-11-09 06:25:50,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:25:50,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939657735] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 06:25:50,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 06:25:50,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [21, 19] total 50 [2024-11-09 06:25:50,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013340353] [2024-11-09 06:25:50,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:25:50,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 06:25:50,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:25:50,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 06:25:50,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=2223, Unknown=0, NotChecked=0, Total=2450 [2024-11-09 06:25:50,341 INFO L87 Difference]: Start difference. First operand 3627 states and 13106 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:25:59,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:25:59,337 INFO L93 Difference]: Finished difference Result 5672 states and 21031 transitions. [2024-11-09 06:25:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 06:25:59,338 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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 45 [2024-11-09 06:25:59,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:25:59,357 INFO L225 Difference]: With dead ends: 5672 [2024-11-09 06:25:59,357 INFO L226 Difference]: Without dead ends: 5637 [2024-11-09 06:25:59,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1489 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=397, Invalid=4159, Unknown=0, NotChecked=0, Total=4556 [2024-11-09 06:25:59,359 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 317 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:25:59,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 109 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 06:25:59,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5637 states. [2024-11-09 06:26:00,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5637 to 3611. [2024-11-09 06:26:00,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3611 states, 3610 states have (on average 3.6110803324099723) internal successors, (13036), 3610 states have internal predecessors, (13036), 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) [2024-11-09 06:26:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3611 states to 3611 states and 13036 transitions. [2024-11-09 06:26:00,999 INFO L78 Accepts]: Start accepts. Automaton has 3611 states and 13036 transitions. Word has length 45 [2024-11-09 06:26:00,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:26:00,999 INFO L471 AbstractCegarLoop]: Abstraction has 3611 states and 13036 transitions. [2024-11-09 06:26:01,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2024-11-09 06:26:01,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3611 states and 13036 transitions. [2024-11-09 06:26:01,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 06:26:01,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:26:01,005 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:26:01,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-11-09 06:26:01,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:26:01,205 INFO L396 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 06:26:01,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:26:01,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1605165703, now seen corresponding path program 25 times [2024-11-09 06:26:01,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:26:01,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794042971] [2024-11-09 06:26:01,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:26:01,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:26:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:26:03,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:26:03,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:26:03,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794042971] [2024-11-09 06:26:03,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794042971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:26:03,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031124544] [2024-11-09 06:26:03,112 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 06:26:03,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:26:03,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:26:03,113 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:26:03,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43a82d87-3a53-4917-b555-0a1a221a21b1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-09 06:26:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:26:03,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 06:26:03,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:26:04,927 INFO L349 Elim1Store]: treesize reduction 3, result has 98.3 percent of original size [2024-11-09 06:26:04,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 175 treesize of output 264 [2024-11-09 06:26:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:26:05,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:26:11,531 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-11-09 06:26:11,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 211