./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b03bd7cf Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-b03bd7c-m [2024-10-28 17:58:23,771 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-28 17:58:23,840 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-10-28 17:58:23,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-28 17:58:23,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-28 17:58:23,868 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-28 17:58:23,869 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-28 17:58:23,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-28 17:58:23,869 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-28 17:58:23,870 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-28 17:58:23,870 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-28 17:58:23,871 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-28 17:58:23,871 INFO L153 SettingsManager]: * Use SBE=true [2024-10-28 17:58:23,871 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-28 17:58:23,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-28 17:58:23,872 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-28 17:58:23,872 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-28 17:58:23,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-28 17:58:23,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-28 17:58:23,873 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-28 17:58:23,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-28 17:58:23,876 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-28 17:58:23,877 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-28 17:58:23,877 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-28 17:58:23,877 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-28 17:58:23,877 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-28 17:58:23,878 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-28 17:58:23,878 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-28 17:58:23,878 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-28 17:58:23,878 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-28 17:58:23,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-28 17:58:23,879 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-28 17:58:23,879 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-28 17:58:23,879 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-28 17:58:23,879 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-28 17:58:23,880 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-10-28 17:58:23,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-28 17:58:23,884 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-28 17:58:23,884 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-10-28 17:58:23,884 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-10-28 17:58:23,885 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-10-28 17:58:23,886 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e [2024-10-28 17:58:24,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-28 17:58:24,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-28 17:58:24,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-28 17:58:24,176 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-28 17:58:24,176 INFO L274 PluginConnector]: CDTParser initialized [2024-10-28 17:58:24,177 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2024-10-28 17:58:25,567 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-28 17:58:25,817 INFO L384 CDTParser]: Found 1 translation units. [2024-10-28 17:58:25,818 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2024-10-28 17:58:25,831 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/feb3ebfc2/acf9af75a43144f4a0cba4dc5a3ae331/FLAGc64131e54 [2024-10-28 17:58:25,848 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/feb3ebfc2/acf9af75a43144f4a0cba4dc5a3ae331 [2024-10-28 17:58:25,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-28 17:58:25,853 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-28 17:58:25,855 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-28 17:58:25,855 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-28 17:58:25,861 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-28 17:58:25,861 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:58:25" (1/1) ... [2024-10-28 17:58:25,862 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b98d7ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:58:25, skipping insertion in model container [2024-10-28 17:58:25,862 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:58:25" (1/1) ... [2024-10-28 17:58:25,911 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-28 17:58:26,266 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i[30176,30189] [2024-10-28 17:58:26,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-28 17:58:26,313 INFO L200 MainTranslator]: Completed pre-run [2024-10-28 17:58:26,355 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i[30176,30189] [2024-10-28 17:58:26,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-28 17:58:26,413 INFO L204 MainTranslator]: Completed translation [2024-10-28 17:58:26,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:58:26 WrapperNode [2024-10-28 17:58:26,414 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-28 17:58:26,415 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-28 17:58:26,415 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-28 17:58:26,415 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-28 17:58:26,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:58:26" (1/1) ... [2024-10-28 17:58:26,439 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:58:26" (1/1) ... [2024-10-28 17:58:26,459 INFO L138 Inliner]: procedures = 171, calls = 42, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 139 [2024-10-28 17:58:26,463 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-28 17:58:26,464 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-28 17:58:26,464 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-28 17:58:26,464 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-28 17:58:26,472 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:58:26" (1/1) ... [2024-10-28 17:58:26,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:58:26" (1/1) ... [2024-10-28 17:58:26,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:58:26" (1/1) ... [2024-10-28 17:58:26,477 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:58:26" (1/1) ... [2024-10-28 17:58:26,490 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:58:26" (1/1) ... [2024-10-28 17:58:26,501 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:58:26" (1/1) ... [2024-10-28 17:58:26,503 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:58:26" (1/1) ... [2024-10-28 17:58:26,505 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:58:26" (1/1) ... [2024-10-28 17:58:26,510 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-28 17:58:26,511 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-28 17:58:26,511 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-28 17:58:26,511 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-28 17:58:26,512 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:58:26" (1/1) ... [2024-10-28 17:58:26,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-28 17:58:26,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-28 17:58:26,551 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-10-28 17:58:26,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-10-28 17:58:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-28 17:58:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-28 17:58:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-28 17:58:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-28 17:58:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-28 17:58:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-28 17:58:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-28 17:58:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-28 17:58:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-28 17:58:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-28 17:58:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-28 17:58:26,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-28 17:58:26,595 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-28 17:58:26,713 INFO L238 CfgBuilder]: Building ICFG [2024-10-28 17:58:26,715 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-28 17:58:26,954 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-28 17:58:26,954 INFO L287 CfgBuilder]: Performing block encoding [2024-10-28 17:58:27,448 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-28 17:58:27,449 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-28 17:58:27,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:58:27 BoogieIcfgContainer [2024-10-28 17:58:27,449 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-28 17:58:27,463 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-28 17:58:27,463 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-28 17:58:27,467 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-28 17:58:27,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:58:25" (1/3) ... [2024-10-28 17:58:27,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62470f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:58:27, skipping insertion in model container [2024-10-28 17:58:27,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:58:26" (2/3) ... [2024-10-28 17:58:27,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62470f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:58:27, skipping insertion in model container [2024-10-28 17:58:27,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:58:27" (3/3) ... [2024-10-28 17:58:27,470 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2024-10-28 17:58:27,486 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-28 17:58:27,486 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-28 17:58:27,487 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-28 17:58:27,525 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-28 17:58:27,579 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:58:27,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-28 17:58:27,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-28 17:58:27,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-10-28 17:58:27,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-10-28 17:58:27,614 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 17:58:27,627 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 17:58:27,634 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:58:27,634 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 17:58:28,000 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:28,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:28,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1930386018, now seen corresponding path program 1 times [2024-10-28 17:58:28,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:28,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166149987] [2024-10-28 17:58:28,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:28,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:58:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-28 17:58:28,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:58:28,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166149987] [2024-10-28 17:58:28,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166149987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:58:28,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:58:28,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 17:58:28,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68365857] [2024-10-28 17:58:28,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:58:28,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 17:58:28,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:58:28,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 17:58:28,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 17:58:28,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:28,330 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:58:28,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:58:28,331 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:28,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:28,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-28 17:58:28,518 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:28,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:28,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1012062788, now seen corresponding path program 1 times [2024-10-28 17:58:28,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:28,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096157659] [2024-10-28 17:58:28,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:28,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:58:28,600 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 17:58:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:58:28,666 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 17:58:28,666 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 17:58:28,668 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 17:58:28,670 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 17:58:28,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-28 17:58:28,677 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-28 17:58:28,680 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 17:58:28,680 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-28 17:58:28,727 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-28 17:58:28,731 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:58:28,733 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 17:58:28,736 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 17:58:28,737 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:58:28,738 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 17:58:29,223 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:29,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:29,224 INFO L85 PathProgramCache]: Analyzing trace with hash 365649528, now seen corresponding path program 1 times [2024-10-28 17:58:29,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:29,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586697396] [2024-10-28 17:58:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:29,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:58:29,295 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-28 17:58:29,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:58:29,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586697396] [2024-10-28 17:58:29,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586697396] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:58:29,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:58:29,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 17:58:29,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180157712] [2024-10-28 17:58:29,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:58:29,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 17:58:29,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:58:29,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 17:58:29,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 17:58:29,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:29,300 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:58:29,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:58:29,300 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:30,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:30,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-28 17:58:30,023 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:30,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:30,025 INFO L85 PathProgramCache]: Analyzing trace with hash -869222787, now seen corresponding path program 1 times [2024-10-28 17:58:30,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:30,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477944204] [2024-10-28 17:58:30,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:30,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:58:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-28 17:58:30,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:58:30,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477944204] [2024-10-28 17:58:30,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477944204] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:58:30,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:58:30,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 17:58:30,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319156239] [2024-10-28 17:58:30,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:58:30,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 17:58:30,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:58:30,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 17:58:30,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 17:58:30,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:30,201 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:58:30,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:58:30,201 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:30,202 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:30,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:30,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:58:30,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-28 17:58:30,374 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:30,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:30,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1447447178, now seen corresponding path program 1 times [2024-10-28 17:58:30,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:30,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154867357] [2024-10-28 17:58:30,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:30,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:58:30,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-28 17:58:30,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:58:30,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154867357] [2024-10-28 17:58:30,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154867357] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:58:30,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:58:30,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-28 17:58:30,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753006949] [2024-10-28 17:58:30,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:58:30,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-28 17:58:30,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:58:30,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-28 17:58:30,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-28 17:58:30,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:30,622 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:58:30,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:58:30,622 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:30,623 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:58:30,623 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:30,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:30,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:58:30,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 17:58:30,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-28 17:58:30,744 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:30,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:30,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2003737737, now seen corresponding path program 1 times [2024-10-28 17:58:30,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:30,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215214340] [2024-10-28 17:58:30,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:30,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:30,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:58:30,782 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 17:58:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:58:30,809 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 17:58:30,809 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 17:58:30,809 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 17:58:30,809 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 17:58:30,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-28 17:58:30,812 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-28 17:58:30,815 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 17:58:30,815 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-28 17:58:30,842 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-28 17:58:30,849 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:58:30,850 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 17:58:30,852 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 17:58:30,852 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:58:30,852 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 17:58:31,516 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:31,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:31,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1478346311, now seen corresponding path program 1 times [2024-10-28 17:58:31,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:31,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609304437] [2024-10-28 17:58:31,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:31,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:58:31,552 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-28 17:58:31,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:58:31,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609304437] [2024-10-28 17:58:31,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609304437] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:58:31,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:58:31,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 17:58:31,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598196814] [2024-10-28 17:58:31,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:58:31,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 17:58:31,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:58:31,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 17:58:31,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 17:58:31,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:31,555 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:58:31,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 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) [2024-10-28 17:58:31,555 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:32,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:32,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-28 17:58:32,836 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:32,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:32,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1585590779, now seen corresponding path program 1 times [2024-10-28 17:58:32,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:32,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555392264] [2024-10-28 17:58:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:32,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:58:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-28 17:58:32,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:58:32,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555392264] [2024-10-28 17:58:32,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555392264] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:58:32,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:58:32,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 17:58:32,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681027547] [2024-10-28 17:58:32,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:58:32,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 17:58:32,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:58:32,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 17:58:32,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 17:58:32,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:32,968 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:58:32,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:58:32,969 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:32,969 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:33,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:33,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:58:33,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-28 17:58:33,211 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:33,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:33,212 INFO L85 PathProgramCache]: Analyzing trace with hash -866675273, now seen corresponding path program 1 times [2024-10-28 17:58:33,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:33,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660002813] [2024-10-28 17:58:33,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:33,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:58:33,477 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-28 17:58:33,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:58:33,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660002813] [2024-10-28 17:58:33,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660002813] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:58:33,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:58:33,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 17:58:33,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858217884] [2024-10-28 17:58:33,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:58:33,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 17:58:33,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:58:33,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 17:58:33,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 17:58:33,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:33,482 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:58:33,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:58:33,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:33,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:58:33,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:33,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:33,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:58:33,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 17:58:33,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-28 17:58:33,759 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:33,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:33,760 INFO L85 PathProgramCache]: Analyzing trace with hash 63505131, now seen corresponding path program 1 times [2024-10-28 17:58:33,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:33,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067132671] [2024-10-28 17:58:33,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:33,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:58:33,813 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 17:58:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:58:33,850 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 17:58:33,850 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 17:58:33,851 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 17:58:33,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 17:58:33,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-28 17:58:33,854 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-28 17:58:33,855 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 17:58:33,855 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-28 17:58:33,882 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-28 17:58:33,885 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:58:33,886 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 17:58:33,886 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 17:58:33,886 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:58:33,887 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 17:58:34,717 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:34,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:34,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1821538686, now seen corresponding path program 1 times [2024-10-28 17:58:34,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:34,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14281912] [2024-10-28 17:58:34,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:34,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:58:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-28 17:58:34,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:58:34,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14281912] [2024-10-28 17:58:34,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14281912] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:58:34,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:58:34,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 17:58:34,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158989312] [2024-10-28 17:58:34,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:58:34,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 17:58:34,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:58:34,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 17:58:34,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 17:58:34,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:34,765 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:58:34,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:58:34,765 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:36,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:36,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-28 17:58:36,783 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:36,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:36,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1943894668, now seen corresponding path program 1 times [2024-10-28 17:58:36,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:36,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591315684] [2024-10-28 17:58:36,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:36,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:58:36,908 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-28 17:58:36,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:58:36,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591315684] [2024-10-28 17:58:36,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591315684] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:58:36,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:58:36,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 17:58:36,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589397455] [2024-10-28 17:58:36,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:58:36,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 17:58:36,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:58:36,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 17:58:36,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 17:58:36,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:36,911 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:58:36,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:58:36,912 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:36,912 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:37,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:37,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:58:37,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-28 17:58:37,253 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:37,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:37,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1439330927, now seen corresponding path program 1 times [2024-10-28 17:58:37,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:37,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54906909] [2024-10-28 17:58:37,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:37,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:58:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-28 17:58:37,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:58:37,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54906909] [2024-10-28 17:58:37,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54906909] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:58:37,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:58:37,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 17:58:37,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768057838] [2024-10-28 17:58:37,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:58:37,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 17:58:37,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:58:37,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 17:58:37,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 17:58:37,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:37,436 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:58:37,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:58:37,436 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:37,436 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:58:37,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:37,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:37,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:58:37,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 17:58:37,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-28 17:58:37,693 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:37,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:37,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1591291863, now seen corresponding path program 1 times [2024-10-28 17:58:37,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:37,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727030125] [2024-10-28 17:58:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:37,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:58:37,744 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 17:58:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:58:37,775 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 17:58:37,776 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 17:58:37,776 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 17:58:37,776 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 17:58:37,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-28 17:58:37,778 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-28 17:58:37,778 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 17:58:37,778 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-28 17:58:37,803 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-10-28 17:58:37,808 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:58:37,809 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 17:58:37,810 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 17:58:37,810 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:58:37,810 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 17:58:38,950 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:38,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:38,950 INFO L85 PathProgramCache]: Analyzing trace with hash 879625336, now seen corresponding path program 1 times [2024-10-28 17:58:38,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:38,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747096205] [2024-10-28 17:58:38,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:38,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:58:39,013 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-28 17:58:39,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:58:39,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747096205] [2024-10-28 17:58:39,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747096205] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:58:39,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:58:39,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 17:58:39,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371370658] [2024-10-28 17:58:39,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:58:39,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 17:58:39,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:58:39,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 17:58:39,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 17:58:39,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:39,015 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:58:39,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 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) [2024-10-28 17:58:39,018 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:41,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:41,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-28 17:58:41,590 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:41,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:41,590 INFO L85 PathProgramCache]: Analyzing trace with hash 2031189548, now seen corresponding path program 1 times [2024-10-28 17:58:41,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:41,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35927422] [2024-10-28 17:58:41,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:41,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:58:41,716 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-28 17:58:41,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:58:41,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35927422] [2024-10-28 17:58:41,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35927422] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:58:41,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:58:41,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 17:58:41,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075765626] [2024-10-28 17:58:41,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:58:41,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 17:58:41,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:58:41,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 17:58:41,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 17:58:41,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:41,720 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:58:41,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:58:41,720 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:41,720 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:42,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:42,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:58:42,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-28 17:58:42,159 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:42,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:42,159 INFO L85 PathProgramCache]: Analyzing trace with hash 777390018, now seen corresponding path program 1 times [2024-10-28 17:58:42,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:42,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870969119] [2024-10-28 17:58:42,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:42,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:58:42,374 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-28 17:58:42,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:58:42,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870969119] [2024-10-28 17:58:42,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870969119] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:58:42,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:58:42,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 17:58:42,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029041626] [2024-10-28 17:58:42,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:58:42,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 17:58:42,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:58:42,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 17:58:42,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 17:58:42,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:42,377 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:58:42,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:58:42,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:42,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:58:42,377 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:42,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:42,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:58:42,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 17:58:42,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-28 17:58:42,820 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:42,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:42,820 INFO L85 PathProgramCache]: Analyzing trace with hash -906193467, now seen corresponding path program 1 times [2024-10-28 17:58:42,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:42,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557138177] [2024-10-28 17:58:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:42,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:58:42,853 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 17:58:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:58:42,881 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 17:58:42,882 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 17:58:42,882 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 17:58:42,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 17:58:42,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-28 17:58:42,884 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-28 17:58:42,884 WARN L244 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 17:58:42,884 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-10-28 17:58:42,912 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-10-28 17:58:42,915 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:58:42,915 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 17:58:42,916 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 17:58:42,916 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:58:42,916 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 17:58:44,293 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:44,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:44,294 INFO L85 PathProgramCache]: Analyzing trace with hash -800722820, now seen corresponding path program 1 times [2024-10-28 17:58:44,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:44,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647200886] [2024-10-28 17:58:44,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:44,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:58:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-28 17:58:44,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:58:44,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647200886] [2024-10-28 17:58:44,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647200886] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:58:44,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:58:44,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 17:58:44,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797766389] [2024-10-28 17:58:44,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:58:44,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 17:58:44,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:58:44,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 17:58:44,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 17:58:44,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:44,364 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:58:44,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:58:44,364 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:47,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:47,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-28 17:58:47,858 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:47,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:47,858 INFO L85 PathProgramCache]: Analyzing trace with hash 338326604, now seen corresponding path program 1 times [2024-10-28 17:58:47,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:47,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103878374] [2024-10-28 17:58:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:47,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:58:47,996 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-28 17:58:47,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:58:47,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103878374] [2024-10-28 17:58:47,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103878374] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:58:47,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:58:47,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 17:58:47,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133101135] [2024-10-28 17:58:47,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:58:47,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 17:58:47,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:58:47,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 17:58:47,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 17:58:47,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:47,999 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:58:47,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:58:47,999 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:48,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:48,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:48,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:58:48,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-28 17:58:48,734 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:48,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:48,734 INFO L85 PathProgramCache]: Analyzing trace with hash 185668449, now seen corresponding path program 1 times [2024-10-28 17:58:48,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:48,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781609978] [2024-10-28 17:58:48,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:48,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:58:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-28 17:58:48,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:58:48,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781609978] [2024-10-28 17:58:48,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781609978] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:58:48,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:58:48,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 17:58:48,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739208964] [2024-10-28 17:58:48,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:58:48,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 17:58:48,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:58:48,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 17:58:48,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 17:58:48,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:48,967 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:58:48,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:58:48,967 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:48,968 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:58:48,968 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:49,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:49,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:58:49,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 17:58:49,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-28 17:58:49,622 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:49,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:49,623 INFO L85 PathProgramCache]: Analyzing trace with hash 2130268730, now seen corresponding path program 1 times [2024-10-28 17:58:49,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:49,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212560876] [2024-10-28 17:58:49,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:49,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:58:49,658 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 17:58:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:58:49,692 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 17:58:49,692 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 17:58:49,693 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 17:58:49,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 17:58:49,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-28 17:58:49,694 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-28 17:58:49,695 WARN L244 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 17:58:49,695 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2024-10-28 17:58:49,759 INFO L143 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2024-10-28 17:58:49,762 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:58:49,763 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 17:58:49,763 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 17:58:49,764 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:58:49,764 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 17:58:51,501 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:51,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:51,502 INFO L85 PathProgramCache]: Analyzing trace with hash -110604795, now seen corresponding path program 1 times [2024-10-28 17:58:51,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:51,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673176711] [2024-10-28 17:58:51,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:51,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:58:51,609 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-10-28 17:58:51,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:58:51,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673176711] [2024-10-28 17:58:51,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673176711] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:58:51,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:58:51,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 17:58:51,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202723530] [2024-10-28 17:58:51,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:58:51,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 17:58:51,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:58:51,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 17:58:51,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 17:58:51,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:51,614 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:58:51,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:58:51,615 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:55,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:55,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-28 17:58:55,880 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:55,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:55,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1877950975, now seen corresponding path program 1 times [2024-10-28 17:58:55,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:55,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367591750] [2024-10-28 17:58:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:55,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:58:56,025 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-28 17:58:56,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:58:56,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367591750] [2024-10-28 17:58:56,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367591750] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:58:56,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:58:56,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 17:58:56,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094327720] [2024-10-28 17:58:56,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:58:56,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 17:58:56,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:58:56,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 17:58:56,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 17:58:56,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:56,029 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:58:56,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:58:56,029 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:56,029 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:56,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:56,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:58:56,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-28 17:58:56,881 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:56,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:56,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1192922157, now seen corresponding path program 1 times [2024-10-28 17:58:56,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:56,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498990550] [2024-10-28 17:58:56,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:56,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:58:57,165 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-28 17:58:57,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:58:57,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498990550] [2024-10-28 17:58:57,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498990550] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:58:57,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:58:57,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 17:58:57,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222785717] [2024-10-28 17:58:57,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:58:57,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 17:58:57,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:58:57,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 17:58:57,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 17:58:57,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:57,169 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:58:57,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:58:57,170 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:57,170 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:58:57,170 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:58,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:58:58,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:58:58,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 17:58:58,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-28 17:58:58,153 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:58:58,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:58:58,154 INFO L85 PathProgramCache]: Analyzing trace with hash -90531698, now seen corresponding path program 1 times [2024-10-28 17:58:58,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:58:58,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182958267] [2024-10-28 17:58:58,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:58:58,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:58:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:58:58,189 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 17:58:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:58:58,228 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 17:58:58,228 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 17:58:58,229 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 17:58:58,229 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 17:58:58,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-28 17:58:58,230 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-28 17:58:58,231 WARN L244 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 17:58:58,231 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2024-10-28 17:58:58,264 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-10-28 17:58:58,266 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:58:58,268 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 17:58:58,268 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 17:58:58,270 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:58:58,270 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 17:59:00,406 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:59:00,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:59:00,407 INFO L85 PathProgramCache]: Analyzing trace with hash 395252154, now seen corresponding path program 1 times [2024-10-28 17:59:00,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:59:00,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197011312] [2024-10-28 17:59:00,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:59:00,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:59:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:59:00,442 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-10-28 17:59:00,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:59:00,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197011312] [2024-10-28 17:59:00,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197011312] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:59:00,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:59:00,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 17:59:00,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841362456] [2024-10-28 17:59:00,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:59:00,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 17:59:00,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:59:00,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 17:59:00,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 17:59:00,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:00,444 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:59:00,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:59:00,444 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:05,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:05,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-28 17:59:05,596 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:59:05,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:59:05,597 INFO L85 PathProgramCache]: Analyzing trace with hash 984839506, now seen corresponding path program 1 times [2024-10-28 17:59:05,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:59:05,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793643207] [2024-10-28 17:59:05,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:59:05,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:59:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:59:05,738 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-10-28 17:59:05,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:59:05,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793643207] [2024-10-28 17:59:05,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793643207] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:59:05,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:59:05,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 17:59:05,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239791133] [2024-10-28 17:59:05,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:59:05,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 17:59:05,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:59:05,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 17:59:05,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 17:59:05,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:05,741 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:59:05,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:59:05,741 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:05,741 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:06,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:06,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:59:06,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-28 17:59:06,716 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:59:06,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:59:06,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1612397318, now seen corresponding path program 1 times [2024-10-28 17:59:06,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:59:06,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653942852] [2024-10-28 17:59:06,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:59:06,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:59:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:59:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-28 17:59:07,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:59:07,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653942852] [2024-10-28 17:59:07,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653942852] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:59:07,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:59:07,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 17:59:07,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043978426] [2024-10-28 17:59:07,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:59:07,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 17:59:07,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:59:07,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 17:59:07,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 17:59:07,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:07,063 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:59:07,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:59:07,063 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:07,063 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:59:07,063 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:08,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:08,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:59:08,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 17:59:08,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-28 17:59:08,266 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:59:08,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:59:08,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2129352300, now seen corresponding path program 1 times [2024-10-28 17:59:08,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:59:08,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771406188] [2024-10-28 17:59:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:59:08,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:59:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:59:08,308 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 17:59:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:59:08,357 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 17:59:08,357 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 17:59:08,357 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 17:59:08,357 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 17:59:08,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-28 17:59:08,359 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-28 17:59:08,359 WARN L244 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 17:59:08,359 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2024-10-28 17:59:08,396 INFO L143 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2024-10-28 17:59:08,398 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:59:08,399 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 17:59:08,399 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 17:59:08,399 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:59:08,399 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 17:59:10,772 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:59:10,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:59:10,773 INFO L85 PathProgramCache]: Analyzing trace with hash 349844606, now seen corresponding path program 1 times [2024-10-28 17:59:10,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:59:10,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580165528] [2024-10-28 17:59:10,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:59:10,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:59:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:59:10,815 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-28 17:59:10,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:59:10,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580165528] [2024-10-28 17:59:10,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580165528] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:59:10,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:59:10,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 17:59:10,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620249305] [2024-10-28 17:59:10,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:59:10,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 17:59:10,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:59:10,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 17:59:10,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 17:59:10,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:10,817 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:59:10,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:59:10,818 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:16,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:16,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-28 17:59:16,982 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:59:16,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:59:16,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1143828210, now seen corresponding path program 1 times [2024-10-28 17:59:16,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:59:16,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864445070] [2024-10-28 17:59:16,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:59:16,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:59:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:59:17,161 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-28 17:59:17,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:59:17,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864445070] [2024-10-28 17:59:17,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864445070] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:59:17,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:59:17,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 17:59:17,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753798983] [2024-10-28 17:59:17,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:59:17,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 17:59:17,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:59:17,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 17:59:17,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 17:59:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:17,164 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:59:17,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:59:17,164 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:17,164 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:18,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:18,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:59:18,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-10-28 17:59:18,439 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:59:18,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:59:18,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1022004980, now seen corresponding path program 1 times [2024-10-28 17:59:18,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:59:18,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488595998] [2024-10-28 17:59:18,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:59:18,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:59:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:59:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-28 17:59:18,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:59:18,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488595998] [2024-10-28 17:59:18,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488595998] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:59:18,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:59:18,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 17:59:18,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506396358] [2024-10-28 17:59:18,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:59:18,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 17:59:18,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:59:18,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 17:59:18,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 17:59:18,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:18,810 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:59:18,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:59:18,810 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:18,810 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:59:18,810 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:59:20,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 17:59:20,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-10-28 17:59:20,153 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:59:20,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:59:20,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1160832398, now seen corresponding path program 1 times [2024-10-28 17:59:20,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:59:20,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127376902] [2024-10-28 17:59:20,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:59:20,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:59:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:59:20,201 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 17:59:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:59:20,250 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 17:59:20,251 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 17:59:20,251 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 17:59:20,251 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 17:59:20,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-10-28 17:59:20,253 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-28 17:59:20,253 WARN L244 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 17:59:20,253 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2024-10-28 17:59:20,288 INFO L143 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2024-10-28 17:59:20,290 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:59:20,291 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 17:59:20,291 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 17:59:20,292 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:59:20,292 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 17:59:23,072 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:59:23,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:59:23,072 INFO L85 PathProgramCache]: Analyzing trace with hash 632960424, now seen corresponding path program 1 times [2024-10-28 17:59:23,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:59:23,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079577096] [2024-10-28 17:59:23,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:59:23,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:59:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:59:23,114 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-10-28 17:59:23,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:59:23,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079577096] [2024-10-28 17:59:23,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079577096] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:59:23,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:59:23,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 17:59:23,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004235473] [2024-10-28 17:59:23,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:59:23,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 17:59:23,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:59:23,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 17:59:23,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 17:59:23,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:23,116 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:59:23,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:59:23,116 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:30,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:30,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-10-28 17:59:30,235 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:59:30,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:59:30,236 INFO L85 PathProgramCache]: Analyzing trace with hash -106544592, now seen corresponding path program 1 times [2024-10-28 17:59:30,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:59:30,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687387458] [2024-10-28 17:59:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:59:30,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:59:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:59:30,402 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-10-28 17:59:30,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:59:30,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687387458] [2024-10-28 17:59:30,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687387458] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:59:30,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:59:30,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 17:59:30,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746403993] [2024-10-28 17:59:30,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:59:30,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 17:59:30,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:59:30,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 17:59:30,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 17:59:30,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:30,405 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:59:30,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:59:30,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:30,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:31,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:31,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:59:31,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-10-28 17:59:31,633 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:59:31,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:59:31,634 INFO L85 PathProgramCache]: Analyzing trace with hash -624100607, now seen corresponding path program 1 times [2024-10-28 17:59:31,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:59:31,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251353407] [2024-10-28 17:59:31,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:59:31,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:59:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:59:32,086 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-10-28 17:59:32,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:59:32,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251353407] [2024-10-28 17:59:32,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251353407] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:59:32,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:59:32,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 17:59:32,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826383720] [2024-10-28 17:59:32,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:59:32,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 17:59:32,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:59:32,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 17:59:32,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 17:59:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:32,088 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:59:32,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:59:32,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:32,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:59:32,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:33,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:33,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:59:33,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 17:59:33,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-10-28 17:59:33,724 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:59:33,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:59:33,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1892726264, now seen corresponding path program 1 times [2024-10-28 17:59:33,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:59:33,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887434845] [2024-10-28 17:59:33,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:59:33,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:59:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:59:33,765 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 17:59:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:59:33,819 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 17:59:33,819 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 17:59:33,820 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 17:59:33,820 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 17:59:33,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-10-28 17:59:33,822 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-28 17:59:33,822 WARN L244 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 17:59:33,822 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2024-10-28 17:59:33,860 INFO L143 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2024-10-28 17:59:33,863 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:59:33,864 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 17:59:33,864 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 17:59:33,864 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:59:33,865 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 17:59:37,220 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:59:37,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:59:37,220 INFO L85 PathProgramCache]: Analyzing trace with hash -459921997, now seen corresponding path program 1 times [2024-10-28 17:59:37,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:59:37,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134351227] [2024-10-28 17:59:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:59:37,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:59:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:59:37,258 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-10-28 17:59:37,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:59:37,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134351227] [2024-10-28 17:59:37,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134351227] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:59:37,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:59:37,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 17:59:37,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393371962] [2024-10-28 17:59:37,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:59:37,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 17:59:37,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:59:37,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 17:59:37,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 17:59:37,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:37,262 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:59:37,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:59:37,262 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:45,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:45,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-10-28 17:59:45,567 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:59:45,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:59:45,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1073646800, now seen corresponding path program 1 times [2024-10-28 17:59:45,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:59:45,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644842299] [2024-10-28 17:59:45,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:59:45,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:59:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:59:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-10-28 17:59:45,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:59:45,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644842299] [2024-10-28 17:59:45,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644842299] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:59:45,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:59:45,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 17:59:45,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296028305] [2024-10-28 17:59:45,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:59:45,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 17:59:45,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:59:45,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 17:59:45,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 17:59:45,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:45,743 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:59:45,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:59:45,743 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:45,744 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:47,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:47,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:59:47,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-10-28 17:59:47,055 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:59:47,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:59:47,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1278479950, now seen corresponding path program 1 times [2024-10-28 17:59:47,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:59:47,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058070123] [2024-10-28 17:59:47,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:59:47,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:59:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:59:47,359 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-10-28 17:59:47,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:59:47,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058070123] [2024-10-28 17:59:47,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058070123] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:59:47,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:59:47,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 17:59:47,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63147562] [2024-10-28 17:59:47,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:59:47,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 17:59:47,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:59:47,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 17:59:47,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 17:59:47,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:47,361 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:59:47,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:59:47,362 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:47,362 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:59:47,362 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:49,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:49,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 17:59:49,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 17:59:49,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-10-28 17:59:49,555 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:59:49,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:59:49,556 INFO L85 PathProgramCache]: Analyzing trace with hash 663452722, now seen corresponding path program 1 times [2024-10-28 17:59:49,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:59:49,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981375507] [2024-10-28 17:59:49,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:59:49,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:59:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:59:49,616 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 17:59:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 17:59:49,679 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 17:59:49,680 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 17:59:49,680 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 17:59:49,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 17:59:49,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-10-28 17:59:49,683 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-28 17:59:49,683 WARN L244 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 17:59:49,683 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2024-10-28 17:59:49,740 INFO L143 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2024-10-28 17:59:49,745 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:59:49,747 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 17:59:49,747 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 17:59:49,748 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 17:59:49,748 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 17:59:53,646 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 17:59:53,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 17:59:53,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1821160082, now seen corresponding path program 1 times [2024-10-28 17:59:53,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 17:59:53,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070363858] [2024-10-28 17:59:53,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 17:59:53,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 17:59:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 17:59:53,691 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-10-28 17:59:53,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 17:59:53,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070363858] [2024-10-28 17:59:53,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070363858] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 17:59:53,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 17:59:53,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 17:59:53,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668475566] [2024-10-28 17:59:53,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 17:59:53,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 17:59:53,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 17:59:53,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 17:59:53,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 17:59:53,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 17:59:53,693 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 17:59:53,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 17:59:53,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:03,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:03,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-10-28 18:00:03,237 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:00:03,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:00:03,238 INFO L85 PathProgramCache]: Analyzing trace with hash 551637030, now seen corresponding path program 1 times [2024-10-28 18:00:03,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:00:03,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974386166] [2024-10-28 18:00:03,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:00:03,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:00:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:00:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-10-28 18:00:03,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:00:03,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974386166] [2024-10-28 18:00:03,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974386166] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:00:03,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:00:03,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:00:03,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408901816] [2024-10-28 18:00:03,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:00:03,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 18:00:03,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:00:03,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 18:00:03,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 18:00:03,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:03,408 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:00:03,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:00:03,408 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:03,408 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:05,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:05,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:00:05,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-10-28 18:00:05,267 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:00:05,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:00:05,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1941939820, now seen corresponding path program 1 times [2024-10-28 18:00:05,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:00:05,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781398627] [2024-10-28 18:00:05,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:00:05,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:00:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:00:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-10-28 18:00:05,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:00:05,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781398627] [2024-10-28 18:00:05,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781398627] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:00:05,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:00:05,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:00:05,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844591389] [2024-10-28 18:00:05,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:00:05,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 18:00:05,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:00:05,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 18:00:05,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 18:00:05,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:05,594 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:00:05,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:00:05,595 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:05,595 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:00:05,595 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:08,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:08,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:00:08,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 18:00:08,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-10-28 18:00:08,166 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:00:08,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:00:08,167 INFO L85 PathProgramCache]: Analyzing trace with hash -938220435, now seen corresponding path program 1 times [2024-10-28 18:00:08,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:00:08,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165978195] [2024-10-28 18:00:08,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:00:08,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:00:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:00:08,221 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 18:00:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:00:08,294 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 18:00:08,294 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 18:00:08,294 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 18:00:08,295 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 18:00:08,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-10-28 18:00:08,298 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-28 18:00:08,298 WARN L244 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 18:00:08,298 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2024-10-28 18:00:08,355 INFO L143 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2024-10-28 18:00:08,358 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:00:08,359 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 18:00:08,359 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 18:00:08,360 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:00:08,360 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 18:00:13,212 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:00:13,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:00:13,213 INFO L85 PathProgramCache]: Analyzing trace with hash 249420376, now seen corresponding path program 1 times [2024-10-28 18:00:13,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:00:13,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040837886] [2024-10-28 18:00:13,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:00:13,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:00:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:00:13,257 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-10-28 18:00:13,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:00:13,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040837886] [2024-10-28 18:00:13,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040837886] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:00:13,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:00:13,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 18:00:13,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663279639] [2024-10-28 18:00:13,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:00:13,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 18:00:13,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:00:13,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 18:00:13,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 18:00:13,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:13,259 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:00:13,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:00:13,259 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:24,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:24,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-10-28 18:00:24,743 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:00:24,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:00:24,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1594250185, now seen corresponding path program 1 times [2024-10-28 18:00:24,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:00:24,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190383304] [2024-10-28 18:00:24,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:00:24,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:00:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:00:24,908 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-10-28 18:00:24,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:00:24,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190383304] [2024-10-28 18:00:24,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190383304] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:00:24,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:00:24,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:00:24,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772354745] [2024-10-28 18:00:24,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:00:24,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 18:00:24,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:00:24,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 18:00:24,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 18:00:24,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:24,910 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:00:24,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:00:24,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:24,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:26,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:26,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:00:26,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-10-28 18:00:26,703 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:00:26,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:00:26,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1448592950, now seen corresponding path program 1 times [2024-10-28 18:00:26,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:00:26,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733354288] [2024-10-28 18:00:26,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:00:26,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:00:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:00:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-10-28 18:00:27,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:00:27,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733354288] [2024-10-28 18:00:27,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733354288] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:00:27,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:00:27,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:00:27,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664862830] [2024-10-28 18:00:27,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:00:27,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 18:00:27,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:00:27,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 18:00:27,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 18:00:27,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:27,008 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:00:27,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:00:27,009 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:27,009 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:00:27,009 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:29,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:29,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:00:29,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 18:00:29,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-10-28 18:00:29,813 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:00:29,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:00:29,814 INFO L85 PathProgramCache]: Analyzing trace with hash -2144741697, now seen corresponding path program 1 times [2024-10-28 18:00:29,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:00:29,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110414394] [2024-10-28 18:00:29,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:00:29,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:00:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:00:29,868 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 18:00:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:00:29,941 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 18:00:29,942 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 18:00:29,942 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 18:00:29,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 18:00:29,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-10-28 18:00:29,946 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-28 18:00:29,947 WARN L244 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 18:00:29,947 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2024-10-28 18:00:29,999 INFO L143 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2024-10-28 18:00:30,003 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:00:30,004 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 18:00:30,004 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 18:00:30,004 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:00:30,004 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 18:00:35,449 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:00:35,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:00:35,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1658648284, now seen corresponding path program 1 times [2024-10-28 18:00:35,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:00:35,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259389929] [2024-10-28 18:00:35,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:00:35,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:00:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:00:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-10-28 18:00:35,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:00:35,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259389929] [2024-10-28 18:00:35,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259389929] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:00:35,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:00:35,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 18:00:35,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400061464] [2024-10-28 18:00:35,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:00:35,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 18:00:35,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:00:35,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 18:00:35,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 18:00:35,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:35,644 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:00:35,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:00:35,644 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:48,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:48,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-10-28 18:00:48,813 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:00:48,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:00:48,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1981698158, now seen corresponding path program 1 times [2024-10-28 18:00:48,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:00:48,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538154697] [2024-10-28 18:00:48,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:00:48,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:00:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:00:48,979 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-10-28 18:00:48,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:00:48,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538154697] [2024-10-28 18:00:48,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538154697] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:00:48,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:00:48,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:00:48,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669342357] [2024-10-28 18:00:48,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:00:48,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 18:00:48,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:00:48,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 18:00:48,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 18:00:48,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:48,981 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:00:48,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:00:48,981 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:48,981 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:50,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:00:50,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-10-28 18:00:50,968 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:00:50,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:00:50,968 INFO L85 PathProgramCache]: Analyzing trace with hash 656157126, now seen corresponding path program 1 times [2024-10-28 18:00:50,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:00:50,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852667204] [2024-10-28 18:00:50,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:00:50,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:00:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:00:51,286 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-10-28 18:00:51,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:00:51,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852667204] [2024-10-28 18:00:51,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852667204] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:00:51,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:00:51,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:00:51,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663338673] [2024-10-28 18:00:51,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:00:51,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 18:00:51,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:00:51,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 18:00:51,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 18:00:51,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:51,290 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:00:51,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:00:51,290 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:51,290 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:00:51,290 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:55,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:00:55,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:00:55,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 18:00:55,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-10-28 18:00:55,147 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:00:55,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:00:55,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1105962045, now seen corresponding path program 1 times [2024-10-28 18:00:55,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:00:55,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137498542] [2024-10-28 18:00:55,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:00:55,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:00:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:00:55,211 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 18:00:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:00:55,283 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 18:00:55,283 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 18:00:55,284 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 18:00:55,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 18:00:55,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-10-28 18:00:55,285 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-28 18:00:55,286 WARN L244 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 18:00:55,286 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2024-10-28 18:00:55,346 INFO L143 ThreadInstanceAdder]: Constructed 15 joinOtherThreadTransitions. [2024-10-28 18:00:55,350 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:00:55,351 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 18:00:55,351 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 18:00:55,351 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:00:55,352 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 18:01:01,262 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:01:01,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:01:01,262 INFO L85 PathProgramCache]: Analyzing trace with hash -662157023, now seen corresponding path program 1 times [2024-10-28 18:01:01,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:01:01,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291421483] [2024-10-28 18:01:01,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:01:01,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:01:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:01:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-10-28 18:01:01,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:01:01,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291421483] [2024-10-28 18:01:01,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291421483] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:01:01,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:01:01,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 18:01:01,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296775071] [2024-10-28 18:01:01,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:01:01,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 18:01:01,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:01:01,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 18:01:01,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 18:01:01,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:01,316 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:01:01,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 55.5) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:01:01,317 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:16,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:16,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-10-28 18:01:16,268 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:01:16,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:01:16,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1513464455, now seen corresponding path program 1 times [2024-10-28 18:01:16,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:01:16,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934594898] [2024-10-28 18:01:16,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:01:16,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:01:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:01:16,737 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2024-10-28 18:01:16,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:01:16,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934594898] [2024-10-28 18:01:16,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934594898] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:01:16,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:01:16,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:01:16,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530799961] [2024-10-28 18:01:16,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:01:16,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 18:01:16,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:01:16,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 18:01:16,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 18:01:16,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:16,739 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:01:16,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:01:16,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:16,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:19,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:19,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:01:19,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-10-28 18:01:19,065 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:01:19,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:01:19,066 INFO L85 PathProgramCache]: Analyzing trace with hash 697157259, now seen corresponding path program 2 times [2024-10-28 18:01:19,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:01:19,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885872210] [2024-10-28 18:01:19,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:01:19,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:01:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:01:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2024-10-28 18:01:19,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:01:19,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885872210] [2024-10-28 18:01:19,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885872210] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:01:19,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:01:19,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:01:19,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847464254] [2024-10-28 18:01:19,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:01:19,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 18:01:19,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:01:19,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 18:01:19,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 18:01:19,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:19,436 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:01:19,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:01:19,436 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:19,436 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:01:19,436 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:24,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:24,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:01:24,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 18:01:24,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-10-28 18:01:24,283 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:01:24,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:01:24,283 INFO L85 PathProgramCache]: Analyzing trace with hash -2014114835, now seen corresponding path program 1 times [2024-10-28 18:01:24,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:01:24,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861657130] [2024-10-28 18:01:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:01:24,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:01:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:01:24,341 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 18:01:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:01:24,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 18:01:24,432 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 18:01:24,432 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 18:01:24,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 18:01:24,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-10-28 18:01:24,434 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-10-28 18:01:24,434 WARN L244 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 18:01:24,434 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2024-10-28 18:01:24,496 INFO L143 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2024-10-28 18:01:24,500 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:01:24,501 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 18:01:24,501 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 18:01:24,502 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:01:24,502 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 18:01:31,055 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:01:31,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:01:31,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1203555510, now seen corresponding path program 1 times [2024-10-28 18:01:31,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:01:31,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029078283] [2024-10-28 18:01:31,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:01:31,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:01:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:01:31,104 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-10-28 18:01:31,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:01:31,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029078283] [2024-10-28 18:01:31,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029078283] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:01:31,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:01:31,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 18:01:31,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005066785] [2024-10-28 18:01:31,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:01:31,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 18:01:31,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:01:31,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 18:01:31,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 18:01:31,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:31,106 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:01:31,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 59.0) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:01:31,106 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:47,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:47,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-10-28 18:01:47,781 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:01:47,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:01:47,782 INFO L85 PathProgramCache]: Analyzing trace with hash -667324445, now seen corresponding path program 1 times [2024-10-28 18:01:47,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:01:47,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989211973] [2024-10-28 18:01:47,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:01:47,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:01:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:01:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-10-28 18:01:47,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:01:47,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989211973] [2024-10-28 18:01:47,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989211973] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:01:47,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:01:47,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:01:47,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126892676] [2024-10-28 18:01:47,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:01:47,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 18:01:47,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:01:47,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 18:01:47,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 18:01:47,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:47,963 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:01:47,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:01:47,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:47,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:50,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:50,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:01:50,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-10-28 18:01:50,149 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:01:50,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:01:50,149 INFO L85 PathProgramCache]: Analyzing trace with hash -204966099, now seen corresponding path program 2 times [2024-10-28 18:01:50,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:01:50,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252990218] [2024-10-28 18:01:50,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:01:50,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:01:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:01:50,480 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2024-10-28 18:01:50,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:01:50,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252990218] [2024-10-28 18:01:50,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252990218] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:01:50,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:01:50,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:01:50,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432168419] [2024-10-28 18:01:50,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:01:50,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 18:01:50,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:01:50,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 18:01:50,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 18:01:50,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:50,482 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:01:50,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:01:50,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:50,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:01:50,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:01:55,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:01:55,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 18:01:55,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-10-28 18:01:55,775 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:01:55,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:01:55,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1910554922, now seen corresponding path program 1 times [2024-10-28 18:01:55,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:01:55,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503700412] [2024-10-28 18:01:55,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:01:55,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:01:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:01:55,831 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 18:01:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:01:55,904 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 18:01:55,905 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 18:01:55,905 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 18:01:55,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 18:01:55,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-10-28 18:01:55,907 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-10-28 18:01:55,907 WARN L244 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 18:01:55,907 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2024-10-28 18:01:55,971 INFO L143 ThreadInstanceAdder]: Constructed 17 joinOtherThreadTransitions. [2024-10-28 18:01:55,975 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:01:55,976 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 18:01:55,976 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 18:01:55,977 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:01:55,977 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 18:02:03,378 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:02:03,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:02:03,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1523000410, now seen corresponding path program 1 times [2024-10-28 18:02:03,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:02:03,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803988879] [2024-10-28 18:02:03,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:02:03,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:02:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:02:03,424 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-10-28 18:02:03,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:02:03,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803988879] [2024-10-28 18:02:03,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803988879] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:02:03,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:02:03,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 18:02:03,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681496706] [2024-10-28 18:02:03,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:02:03,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 18:02:03,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:02:03,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 18:02:03,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 18:02:03,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:02:03,426 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:02:03,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 62.5) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:02:03,427 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:02:21,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:02:21,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-10-28 18:02:21,878 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:02:21,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:02:21,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1128041172, now seen corresponding path program 1 times [2024-10-28 18:02:21,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:02:21,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711436638] [2024-10-28 18:02:21,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:02:21,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:02:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:02:22,245 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2024-10-28 18:02:22,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:02:22,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711436638] [2024-10-28 18:02:22,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711436638] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:02:22,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:02:22,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:02:22,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402068091] [2024-10-28 18:02:22,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:02:22,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 18:02:22,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:02:22,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 18:02:22,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 18:02:22,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:02:22,247 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:02:22,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:02:22,247 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:02:22,247 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:02:24,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:02:24,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:02:24,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-10-28 18:02:24,274 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:02:24,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:02:24,274 INFO L85 PathProgramCache]: Analyzing trace with hash -860720326, now seen corresponding path program 2 times [2024-10-28 18:02:24,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:02:24,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069518387] [2024-10-28 18:02:24,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:02:24,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:02:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:02:24,647 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2024-10-28 18:02:24,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:02:24,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069518387] [2024-10-28 18:02:24,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069518387] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:02:24,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:02:24,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:02:24,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404568306] [2024-10-28 18:02:24,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:02:24,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 18:02:24,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:02:24,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 18:02:24,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 18:02:24,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:02:24,649 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:02:24,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:02:24,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:02:24,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:02:24,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:02:30,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:02:30,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:02:30,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 18:02:30,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-10-28 18:02:30,843 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:02:30,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:02:30,843 INFO L85 PathProgramCache]: Analyzing trace with hash 411041443, now seen corresponding path program 1 times [2024-10-28 18:02:30,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:02:30,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660024361] [2024-10-28 18:02:30,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:02:30,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:02:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:02:30,899 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 18:02:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:02:31,159 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 18:02:31,159 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 18:02:31,159 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 18:02:31,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 18:02:31,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-10-28 18:02:31,162 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-10-28 18:02:31,162 WARN L244 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 18:02:31,162 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2024-10-28 18:02:31,236 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-10-28 18:02:31,240 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:02:31,241 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 18:02:31,241 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 18:02:31,242 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:02:31,242 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 18:02:39,303 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:02:39,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:02:39,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1910340696, now seen corresponding path program 1 times [2024-10-28 18:02:39,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:02:39,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346239591] [2024-10-28 18:02:39,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:02:39,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:02:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:02:39,350 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2024-10-28 18:02:39,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:02:39,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346239591] [2024-10-28 18:02:39,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346239591] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:02:39,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:02:39,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 18:02:39,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271163437] [2024-10-28 18:02:39,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:02:39,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 18:02:39,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:02:39,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 18:02:39,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 18:02:39,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:02:39,352 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:02:39,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:02:39,352 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:02:59,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:02:59,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-10-28 18:02:59,709 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:02:59,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:02:59,709 INFO L85 PathProgramCache]: Analyzing trace with hash 737178942, now seen corresponding path program 1 times [2024-10-28 18:02:59,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:02:59,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637069576] [2024-10-28 18:02:59,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:02:59,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:02:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:02:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2024-10-28 18:02:59,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:02:59,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637069576] [2024-10-28 18:02:59,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637069576] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:02:59,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:02:59,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:02:59,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5415244] [2024-10-28 18:02:59,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:02:59,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 18:02:59,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:02:59,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 18:02:59,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 18:02:59,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:02:59,931 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:02:59,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:02:59,931 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:02:59,932 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:03:02,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:03:02,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:03:02,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-10-28 18:03:02,145 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:03:02,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:03:02,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1536158662, now seen corresponding path program 2 times [2024-10-28 18:03:02,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:03:02,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510839498] [2024-10-28 18:03:02,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:03:02,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:03:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:03:02,577 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2024-10-28 18:03:02,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:03:02,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510839498] [2024-10-28 18:03:02,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510839498] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:03:02,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:03:02,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:03:02,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266721997] [2024-10-28 18:03:02,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:03:02,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 18:03:02,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:03:02,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 18:03:02,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 18:03:02,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:03:02,579 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:03:02,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:03:02,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:03:02,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:03:02,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:03:09,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:03:09,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:03:09,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 18:03:09,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-10-28 18:03:09,900 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:03:09,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:03:09,900 INFO L85 PathProgramCache]: Analyzing trace with hash -773401974, now seen corresponding path program 1 times [2024-10-28 18:03:09,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:03:09,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84640796] [2024-10-28 18:03:09,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:03:09,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:03:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:03:09,982 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 18:03:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:03:10,066 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 18:03:10,066 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 18:03:10,066 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 18:03:10,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 18:03:10,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-10-28 18:03:10,068 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-10-28 18:03:10,068 WARN L244 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 18:03:10,069 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2024-10-28 18:03:10,135 INFO L143 ThreadInstanceAdder]: Constructed 19 joinOtherThreadTransitions. [2024-10-28 18:03:10,139 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:03:10,139 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 18:03:10,140 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 18:03:10,140 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:03:10,140 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 18:03:19,455 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:03:19,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:03:19,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1255830111, now seen corresponding path program 1 times [2024-10-28 18:03:19,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:03:19,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494977159] [2024-10-28 18:03:19,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:03:19,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:03:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:03:19,508 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-10-28 18:03:19,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:03:19,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494977159] [2024-10-28 18:03:19,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494977159] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:03:19,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:03:19,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 18:03:19,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485707504] [2024-10-28 18:03:19,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:03:19,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 18:03:19,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:03:19,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 18:03:19,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 18:03:19,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:03:19,511 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:03:19,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:03:19,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:03:42,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:03:42,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-10-28 18:03:42,613 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:03:42,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:03:42,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1744540714, now seen corresponding path program 1 times [2024-10-28 18:03:42,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:03:42,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420088449] [2024-10-28 18:03:42,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:03:42,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:03:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:03:42,864 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-10-28 18:03:42,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:03:42,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420088449] [2024-10-28 18:03:42,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420088449] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:03:42,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:03:42,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:03:42,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174633379] [2024-10-28 18:03:42,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:03:42,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 18:03:42,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:03:42,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 18:03:42,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 18:03:42,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:03:42,866 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:03:42,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:03:42,867 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:03:42,867 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:03:45,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:03:45,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:03:45,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-10-28 18:03:45,198 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:03:45,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:03:45,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2194136, now seen corresponding path program 2 times [2024-10-28 18:03:45,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:03:45,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640141305] [2024-10-28 18:03:45,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:03:45,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:03:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:03:45,603 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2024-10-28 18:03:45,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:03:45,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640141305] [2024-10-28 18:03:45,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640141305] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:03:45,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:03:45,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:03:45,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925878871] [2024-10-28 18:03:45,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:03:45,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 18:03:45,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:03:45,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 18:03:45,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 18:03:45,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:03:45,605 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:03:45,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:03:45,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:03:45,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:03:45,606 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:03:53,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:03:53,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:03:53,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 18:03:53,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-10-28 18:03:53,655 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:03:53,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:03:53,656 INFO L85 PathProgramCache]: Analyzing trace with hash 179042139, now seen corresponding path program 1 times [2024-10-28 18:03:53,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:03:53,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221835166] [2024-10-28 18:03:53,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:03:53,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:03:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:03:53,731 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 18:03:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:03:53,808 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 18:03:53,809 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 18:03:53,809 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 18:03:53,809 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 18:03:53,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-10-28 18:03:53,810 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-10-28 18:03:53,810 WARN L244 ceAbstractionStarter]: 19 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 18:03:53,811 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 20 thread instances. [2024-10-28 18:03:53,872 INFO L143 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2024-10-28 18:03:53,876 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:03:53,877 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 18:03:53,877 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 18:03:53,878 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:03:53,878 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 18:04:04,407 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:04:04,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:04:04,407 INFO L85 PathProgramCache]: Analyzing trace with hash -489696126, now seen corresponding path program 1 times [2024-10-28 18:04:04,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:04:04,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280817284] [2024-10-28 18:04:04,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:04:04,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:04:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:04:04,463 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2024-10-28 18:04:04,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:04:04,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280817284] [2024-10-28 18:04:04,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280817284] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:04:04,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:04:04,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 18:04:04,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962698376] [2024-10-28 18:04:04,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:04:04,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 18:04:04,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:04:04,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 18:04:04,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 18:04:04,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:04:04,464 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:04:04,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:04:04,465 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:04:30,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:04:30,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-10-28 18:04:30,024 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:04:30,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:04:30,024 INFO L85 PathProgramCache]: Analyzing trace with hash -281763725, now seen corresponding path program 1 times [2024-10-28 18:04:30,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:04:30,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992058198] [2024-10-28 18:04:30,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:04:30,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:04:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:04:30,288 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-10-28 18:04:30,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:04:30,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992058198] [2024-10-28 18:04:30,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992058198] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:04:30,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:04:30,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:04:30,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926089067] [2024-10-28 18:04:30,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:04:30,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 18:04:30,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:04:30,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 18:04:30,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 18:04:30,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:04:30,290 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:04:30,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:04:30,290 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:04:30,290 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:04:32,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:04:32,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:04:32,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-10-28 18:04:32,707 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:04:32,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:04:32,707 INFO L85 PathProgramCache]: Analyzing trace with hash -959957007, now seen corresponding path program 2 times [2024-10-28 18:04:32,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:04:32,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303995544] [2024-10-28 18:04:32,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:04:32,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:04:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:04:33,160 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-10-28 18:04:33,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:04:33,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303995544] [2024-10-28 18:04:33,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303995544] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:04:33,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:04:33,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:04:33,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045088410] [2024-10-28 18:04:33,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:04:33,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 18:04:33,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:04:33,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 18:04:33,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 18:04:33,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:04:33,163 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:04:33,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.5) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:04:33,163 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:04:33,163 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:04:33,163 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:04:42,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:04:42,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:04:42,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 18:04:42,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-10-28 18:04:42,506 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:04:42,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:04:42,507 INFO L85 PathProgramCache]: Analyzing trace with hash 986007020, now seen corresponding path program 1 times [2024-10-28 18:04:42,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:04:42,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966745209] [2024-10-28 18:04:42,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:04:42,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:04:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:04:42,584 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 18:04:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:04:42,705 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 18:04:42,705 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 18:04:42,706 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 18:04:42,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 18:04:42,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-10-28 18:04:42,710 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-10-28 18:04:42,710 WARN L244 ceAbstractionStarter]: 20 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 18:04:42,710 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 21 thread instances. [2024-10-28 18:04:42,799 INFO L143 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2024-10-28 18:04:42,804 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:04:42,807 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 18:04:42,807 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 18:04:42,808 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:04:42,808 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 18:04:54,034 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:04:54,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:04:54,034 INFO L85 PathProgramCache]: Analyzing trace with hash 723498072, now seen corresponding path program 1 times [2024-10-28 18:04:54,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:04:54,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84452358] [2024-10-28 18:04:54,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:04:54,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:04:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:04:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2024-10-28 18:04:54,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:04:54,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84452358] [2024-10-28 18:04:54,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84452358] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:04:54,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:04:54,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 18:04:54,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227642001] [2024-10-28 18:04:54,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:04:54,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 18:04:54,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:04:54,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 18:04:54,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 18:04:54,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:04:54,098 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:04:54,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:04:54,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:05:22,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:05:22,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-10-28 18:05:22,345 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:05:22,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:05:22,345 INFO L85 PathProgramCache]: Analyzing trace with hash -654351885, now seen corresponding path program 1 times [2024-10-28 18:05:22,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:05:22,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805632753] [2024-10-28 18:05:22,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:05:22,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:05:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:05:22,644 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2024-10-28 18:05:22,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:05:22,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805632753] [2024-10-28 18:05:22,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805632753] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:05:22,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:05:22,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:05:22,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126425137] [2024-10-28 18:05:22,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:05:22,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 18:05:22,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:05:22,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 18:05:22,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 18:05:22,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:05:22,646 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:05:22,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:05:22,646 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:05:22,646 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:05:25,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:05:25,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:05:25,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-10-28 18:05:25,041 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:05:25,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:05:25,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1899726941, now seen corresponding path program 2 times [2024-10-28 18:05:25,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:05:25,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450869542] [2024-10-28 18:05:25,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:05:25,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:05:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:05:25,530 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2024-10-28 18:05:25,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:05:25,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450869542] [2024-10-28 18:05:25,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450869542] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:05:25,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:05:25,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:05:25,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575377132] [2024-10-28 18:05:25,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:05:25,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 18:05:25,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:05:25,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 18:05:25,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 18:05:25,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:05:25,533 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:05:25,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:05:25,534 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:05:25,534 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:05:25,534 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:05:36,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:05:36,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:05:36,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 18:05:36,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-10-28 18:05:36,011 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:05:36,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:05:36,011 INFO L85 PathProgramCache]: Analyzing trace with hash 737289458, now seen corresponding path program 1 times [2024-10-28 18:05:36,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:05:36,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439991499] [2024-10-28 18:05:36,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:05:36,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:05:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:05:36,098 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 18:05:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:05:36,378 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 18:05:36,379 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 18:05:36,379 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 18:05:36,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 18:05:36,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-10-28 18:05:36,381 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-10-28 18:05:36,382 WARN L244 ceAbstractionStarter]: 21 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 18:05:36,382 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 22 thread instances. [2024-10-28 18:05:36,466 INFO L143 ThreadInstanceAdder]: Constructed 22 joinOtherThreadTransitions. [2024-10-28 18:05:36,470 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:05:36,471 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 18:05:36,472 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 18:05:36,472 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:05:36,472 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 18:05:48,663 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:05:48,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:05:48,663 INFO L85 PathProgramCache]: Analyzing trace with hash 313419344, now seen corresponding path program 1 times [2024-10-28 18:05:48,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:05:48,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574428615] [2024-10-28 18:05:48,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:05:48,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:05:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:05:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2024-10-28 18:05:48,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:05:48,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574428615] [2024-10-28 18:05:48,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574428615] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:05:48,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:05:48,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 18:05:48,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002369545] [2024-10-28 18:05:48,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:05:48,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 18:05:48,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:05:48,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 18:05:48,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 18:05:48,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:05:48,740 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:05:48,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.0) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:05:48,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:06:19,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:06:19,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-10-28 18:06:19,206 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:06:19,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:06:19,207 INFO L85 PathProgramCache]: Analyzing trace with hash 822036081, now seen corresponding path program 1 times [2024-10-28 18:06:19,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:06:19,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019157732] [2024-10-28 18:06:19,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:06:19,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:06:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:06:19,678 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-10-28 18:06:19,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:06:19,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019157732] [2024-10-28 18:06:19,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019157732] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:06:19,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:06:19,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:06:19,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499246042] [2024-10-28 18:06:19,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:06:19,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 18:06:19,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:06:19,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 18:06:19,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 18:06:19,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:06:19,680 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:06:19,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:06:19,680 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:06:19,680 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:06:22,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:06:22,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:06:22,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-10-28 18:06:22,025 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:06:22,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:06:22,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1018743459, now seen corresponding path program 2 times [2024-10-28 18:06:22,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:06:22,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890155953] [2024-10-28 18:06:22,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:06:22,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:06:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:06:22,823 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2024-10-28 18:06:22,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:06:22,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890155953] [2024-10-28 18:06:22,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890155953] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:06:22,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:06:22,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:06:22,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361843013] [2024-10-28 18:06:22,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:06:22,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 18:06:22,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:06:22,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 18:06:22,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 18:06:22,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:06:22,825 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:06:22,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:06:22,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:06:22,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:06:22,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:06:33,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:06:33,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:06:33,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 18:06:33,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-10-28 18:06:33,980 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:06:33,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:06:33,980 INFO L85 PathProgramCache]: Analyzing trace with hash -328361102, now seen corresponding path program 1 times [2024-10-28 18:06:33,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:06:33,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658377803] [2024-10-28 18:06:33,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:06:33,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:06:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:06:34,068 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 18:06:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:06:34,210 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 18:06:34,210 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 18:06:34,210 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 18:06:34,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 18:06:34,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-10-28 18:06:34,213 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-10-28 18:06:34,214 WARN L244 ceAbstractionStarter]: 22 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 18:06:34,214 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 23 thread instances. [2024-10-28 18:06:34,308 INFO L143 ThreadInstanceAdder]: Constructed 23 joinOtherThreadTransitions. [2024-10-28 18:06:34,313 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:06:34,314 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 18:06:34,315 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 18:06:34,316 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:06:34,316 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 18:06:47,740 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:06:47,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:06:47,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1370191723, now seen corresponding path program 1 times [2024-10-28 18:06:47,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:06:47,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877759492] [2024-10-28 18:06:47,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:06:47,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:06:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:06:47,808 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2024-10-28 18:06:47,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:06:47,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877759492] [2024-10-28 18:06:47,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877759492] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:06:47,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:06:47,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 18:06:47,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532624219] [2024-10-28 18:06:47,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:06:47,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 18:06:47,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:06:47,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 18:06:47,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 18:06:47,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:06:47,810 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:06:47,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:06:47,810 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:07:21,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:07:21,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-10-28 18:07:21,051 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:07:21,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:07:21,052 INFO L85 PathProgramCache]: Analyzing trace with hash 340458014, now seen corresponding path program 1 times [2024-10-28 18:07:21,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:07:21,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248140064] [2024-10-28 18:07:21,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:07:21,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:07:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:07:21,345 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2024-10-28 18:07:21,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:07:21,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248140064] [2024-10-28 18:07:21,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248140064] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:07:21,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:07:21,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:07:21,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004777445] [2024-10-28 18:07:21,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:07:21,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 18:07:21,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:07:21,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 18:07:21,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 18:07:21,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:07:21,347 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:07:21,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:07:21,347 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:07:21,347 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:07:23,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:07:23,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:07:23,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-10-28 18:07:23,762 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:07:23,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:07:23,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1413779854, now seen corresponding path program 2 times [2024-10-28 18:07:23,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:07:23,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651607692] [2024-10-28 18:07:23,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:07:23,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:07:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:07:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2024-10-28 18:07:24,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:07:24,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651607692] [2024-10-28 18:07:24,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651607692] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:07:24,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:07:24,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:07:24,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042461868] [2024-10-28 18:07:24,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:07:24,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 18:07:24,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:07:24,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 18:07:24,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 18:07:24,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:07:24,373 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:07:24,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.0) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:07:24,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:07:24,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:07:24,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:07:36,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:07:36,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:07:36,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 18:07:36,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-10-28 18:07:36,812 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:07:36,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:07:36,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2055796744, now seen corresponding path program 1 times [2024-10-28 18:07:36,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:07:36,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476321443] [2024-10-28 18:07:36,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:07:36,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:07:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:07:36,900 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 18:07:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:07:37,060 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 18:07:37,060 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 18:07:37,060 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 18:07:37,061 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 18:07:37,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-10-28 18:07:37,064 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-10-28 18:07:37,067 WARN L244 ceAbstractionStarter]: 23 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 18:07:37,067 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 24 thread instances. [2024-10-28 18:07:37,162 INFO L143 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2024-10-28 18:07:37,167 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:07:37,168 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 18:07:37,168 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 18:07:37,169 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:07:37,169 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 18:07:51,533 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:07:51,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:07:51,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1266906374, now seen corresponding path program 1 times [2024-10-28 18:07:51,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:07:51,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294898088] [2024-10-28 18:07:51,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:07:51,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:07:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:07:51,611 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2024-10-28 18:07:51,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:07:51,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294898088] [2024-10-28 18:07:51,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294898088] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:07:51,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:07:51,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 18:07:51,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375950057] [2024-10-28 18:07:51,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:07:51,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 18:07:51,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:07:51,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 18:07:51,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 18:07:51,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:07:51,613 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:07:51,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 87.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:07:51,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:08:27,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:08:27,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-10-28 18:08:27,931 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:08:27,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:08:27,931 INFO L85 PathProgramCache]: Analyzing trace with hash -200559804, now seen corresponding path program 1 times [2024-10-28 18:08:27,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:08:27,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223770099] [2024-10-28 18:08:27,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:08:27,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:08:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:08:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2024-10-28 18:08:28,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:08:28,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223770099] [2024-10-28 18:08:28,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223770099] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:08:28,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:08:28,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:08:28,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182484674] [2024-10-28 18:08:28,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:08:28,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 18:08:28,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:08:28,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 18:08:28,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 18:08:28,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:08:28,262 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:08:28,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:08:28,262 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:08:28,262 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:08:30,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:08:30,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:08:30,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-10-28 18:08:30,862 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:08:30,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:08:30,863 INFO L85 PathProgramCache]: Analyzing trace with hash 768676180, now seen corresponding path program 2 times [2024-10-28 18:08:30,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:08:30,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940087456] [2024-10-28 18:08:30,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:08:30,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:08:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:08:31,394 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2024-10-28 18:08:31,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:08:31,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940087456] [2024-10-28 18:08:31,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940087456] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:08:31,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:08:31,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:08:31,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797052880] [2024-10-28 18:08:31,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:08:31,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 18:08:31,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:08:31,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 18:08:31,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 18:08:31,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:08:31,396 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:08:31,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:08:31,396 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:08:31,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:08:31,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:08:45,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:08:45,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:08:45,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 18:08:45,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-10-28 18:08:45,418 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:08:45,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:08:45,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1414647549, now seen corresponding path program 1 times [2024-10-28 18:08:45,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:08:45,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144840459] [2024-10-28 18:08:45,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:08:45,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:08:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:08:45,510 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 18:08:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:08:45,843 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 18:08:45,843 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 18:08:45,843 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 18:08:45,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 18:08:45,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-10-28 18:08:45,846 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-10-28 18:08:45,846 WARN L244 ceAbstractionStarter]: 24 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 18:08:45,846 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 25 thread instances. [2024-10-28 18:08:45,926 INFO L143 ThreadInstanceAdder]: Constructed 25 joinOtherThreadTransitions. [2024-10-28 18:08:45,930 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:08:45,931 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 18:08:45,932 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 18:08:45,932 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:08:45,932 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 18:09:01,328 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:09:01,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:09:01,329 INFO L85 PathProgramCache]: Analyzing trace with hash 568470662, now seen corresponding path program 1 times [2024-10-28 18:09:01,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:09:01,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693048026] [2024-10-28 18:09:01,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:09:01,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:09:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:09:01,400 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2024-10-28 18:09:01,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:09:01,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693048026] [2024-10-28 18:09:01,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693048026] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:09:01,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:09:01,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 18:09:01,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418457341] [2024-10-28 18:09:01,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:09:01,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 18:09:01,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:09:01,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 18:09:01,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 18:09:01,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:09:01,402 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:09:01,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:09:01,402 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:09:39,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:09:39,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-10-28 18:09:39,855 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:09:39,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:09:39,856 INFO L85 PathProgramCache]: Analyzing trace with hash -225789738, now seen corresponding path program 1 times [2024-10-28 18:09:39,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:09:39,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60378808] [2024-10-28 18:09:39,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:09:39,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:09:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:09:40,174 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2024-10-28 18:09:40,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:09:40,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60378808] [2024-10-28 18:09:40,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60378808] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:09:40,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:09:40,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:09:40,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714023276] [2024-10-28 18:09:40,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:09:40,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 18:09:40,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:09:40,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 18:09:40,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 18:09:40,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:09:40,176 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:09:40,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:09:40,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:09:40,176 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:09:42,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:09:42,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:09:42,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-10-28 18:09:42,743 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:09:42,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:09:42,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1623271674, now seen corresponding path program 2 times [2024-10-28 18:09:42,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:09:42,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242353195] [2024-10-28 18:09:42,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:09:42,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:09:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:09:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2024-10-28 18:09:43,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:09:43,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242353195] [2024-10-28 18:09:43,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242353195] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:09:43,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:09:43,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:09:43,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599052237] [2024-10-28 18:09:43,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:09:43,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 18:09:43,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:09:43,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 18:09:43,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 18:09:43,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:09:43,326 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:09:43,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:09:43,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:09:43,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:09:43,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:09:57,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:09:57,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:09:57,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-28 18:09:57,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-10-28 18:09:57,985 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:09:57,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:09:57,986 INFO L85 PathProgramCache]: Analyzing trace with hash -2124667041, now seen corresponding path program 1 times [2024-10-28 18:09:57,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:09:57,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110154857] [2024-10-28 18:09:57,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:09:57,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:09:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:09:58,084 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-28 18:09:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-28 18:09:58,230 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-28 18:09:58,230 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-28 18:09:58,230 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-10-28 18:09:58,230 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-28 18:09:58,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-10-28 18:09:58,233 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-10-28 18:09:58,233 WARN L244 ceAbstractionStarter]: 25 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-28 18:09:58,233 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 26 thread instances. [2024-10-28 18:09:58,457 INFO L143 ThreadInstanceAdder]: Constructed 26 joinOtherThreadTransitions. [2024-10-28 18:09:58,463 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:09:58,465 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-28 18:09:58,465 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-28 18:09:58,465 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=PARTIAL_ORDER_FA, 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;@558973b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-28 18:09:58,466 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-28 18:10:15,093 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:10:15,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:10:15,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1338964716, now seen corresponding path program 1 times [2024-10-28 18:10:15,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:10:15,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543318616] [2024-10-28 18:10:15,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:10:15,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:10:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:10:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-10-28 18:10:15,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:10:15,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543318616] [2024-10-28 18:10:15,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543318616] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:10:15,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:10:15,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-28 18:10:15,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495746155] [2024-10-28 18:10:15,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:10:15,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-28 18:10:15,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:10:15,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-28 18:10:15,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-28 18:10:15,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:10:15,182 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:10:15,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 94.0) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:10:15,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:10:56,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:10:56,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-10-28 18:10:56,234 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:10:56,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:10:56,234 INFO L85 PathProgramCache]: Analyzing trace with hash 813798047, now seen corresponding path program 1 times [2024-10-28 18:10:56,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:10:56,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857693848] [2024-10-28 18:10:56,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:10:56,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:10:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:10:56,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2024-10-28 18:10:56,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:10:56,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857693848] [2024-10-28 18:10:56,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857693848] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:10:56,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:10:56,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:10:56,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267114230] [2024-10-28 18:10:56,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:10:56,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-28 18:10:56,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:10:56,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-28 18:10:56,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-28 18:10:56,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:10:56,718 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:10:56,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:10:56,718 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:10:56,719 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:10:59,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:10:59,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:10:59,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-10-28 18:10:59,137 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-28 18:10:59,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-28 18:10:59,137 INFO L85 PathProgramCache]: Analyzing trace with hash 520272431, now seen corresponding path program 2 times [2024-10-28 18:10:59,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-28 18:10:59,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819988128] [2024-10-28 18:10:59,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-28 18:10:59,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-28 18:10:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-28 18:10:59,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 877 trivial. 0 not checked. [2024-10-28 18:10:59,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-28 18:10:59,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819988128] [2024-10-28 18:10:59,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819988128] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-28 18:10:59,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-28 18:10:59,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-28 18:10:59,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605364729] [2024-10-28 18:10:59,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-28 18:10:59,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-28 18:10:59,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-28 18:10:59,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-28 18:10:59,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-28 18:10:59,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:10:59,851 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-28 18:10:59,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.5) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-28 18:10:59,851 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-28 18:10:59,851 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-28 18:10:59,851 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. Killed by 15