./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c --traceabstraction.use.conditional.por.in.concurrent.analysis true --traceabstraction.commutativity.condition.synthesis SUFFICIENT --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ebd41074 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a --traceabstraction.use.conditional.por.in.concurrent.analysis true --traceabstraction.commutativity.condition.synthesis SUFFICIENT --- Real Ultimate output --- This is Ultimate 0.3.0-dev-ebd4107-m [2025-01-23 19:53:10,080 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-23 19:53:10,179 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-01-23 19:53:10,207 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-23 19:53:10,207 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-23 19:53:10,241 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-23 19:53:10,242 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-23 19:53:10,243 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-23 19:53:10,243 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-23 19:53:10,243 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-23 19:53:10,243 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-23 19:53:10,244 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-23 19:53:10,244 INFO L153 SettingsManager]: * Use SBE=true [2025-01-23 19:53:10,244 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-23 19:53:10,244 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-23 19:53:10,244 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-23 19:53:10,244 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-23 19:53:10,244 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-23 19:53:10,244 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-23 19:53:10,245 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-23 19:53:10,245 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-23 19:53:10,245 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-23 19:53:10,245 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-23 19:53:10,245 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-23 19:53:10,245 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-23 19:53:10,245 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-23 19:53:10,245 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-23 19:53:10,246 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-23 19:53:10,246 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-23 19:53:10,246 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-23 19:53:10,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-01-23 19:53:10,246 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-23 19:53:10,246 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-23 19:53:10,246 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-23 19:53:10,246 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-01-23 19:53:10,247 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-23 19:53:10,247 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-23 19:53:10,247 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-01-23 19:53:10,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-23 19:53:10,247 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-23 19:53:10,247 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-01-23 19:53:10,247 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-01-23 19:53:10,247 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-01-23 19:53:10,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-jdk21/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 -> 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use conditional POR in concurrent analysis -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Commutativity condition synthesis -> SUFFICIENT [2025-01-23 19:53:10,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-23 19:53:10,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-23 19:53:10,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-23 19:53:10,553 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-23 19:53:10,553 INFO L274 PluginConnector]: CDTParser initialized [2025-01-23 19:53:10,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c [2025-01-23 19:53:11,875 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/2e226a1af/797f36e852ec44b3ad66bae1c26d081a/FLAG75af7757f [2025-01-23 19:53:12,074 INFO L384 CDTParser]: Found 1 translation units. [2025-01-23 19:53:12,075 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c [2025-01-23 19:53:12,084 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/2e226a1af/797f36e852ec44b3ad66bae1c26d081a/FLAG75af7757f [2025-01-23 19:53:12,102 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/data/2e226a1af/797f36e852ec44b3ad66bae1c26d081a [2025-01-23 19:53:12,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-23 19:53:12,105 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-23 19:53:12,106 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-23 19:53:12,106 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-23 19:53:12,110 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-23 19:53:12,110 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 07:53:12" (1/1) ... [2025-01-23 19:53:12,112 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25219a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:53:12, skipping insertion in model container [2025-01-23 19:53:12,112 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 07:53:12" (1/1) ... [2025-01-23 19:53:12,128 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-23 19:53:12,282 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c[2564,2577] [2025-01-23 19:53:12,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-23 19:53:12,300 INFO L200 MainTranslator]: Completed pre-run [2025-01-23 19:53:12,363 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c[2564,2577] [2025-01-23 19:53:12,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-23 19:53:12,378 INFO L204 MainTranslator]: Completed translation [2025-01-23 19:53:12,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:53:12 WrapperNode [2025-01-23 19:53:12,379 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-23 19:53:12,380 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-23 19:53:12,380 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-23 19:53:12,380 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-23 19:53:12,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:53:12" (1/1) ... [2025-01-23 19:53:12,390 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:53:12" (1/1) ... [2025-01-23 19:53:12,412 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 170 [2025-01-23 19:53:12,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-23 19:53:12,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-23 19:53:12,412 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-23 19:53:12,412 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-23 19:53:12,418 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:53:12" (1/1) ... [2025-01-23 19:53:12,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:53:12" (1/1) ... [2025-01-23 19:53:12,420 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:53:12" (1/1) ... [2025-01-23 19:53:12,420 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:53:12" (1/1) ... [2025-01-23 19:53:12,426 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:53:12" (1/1) ... [2025-01-23 19:53:12,426 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:53:12" (1/1) ... [2025-01-23 19:53:12,432 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:53:12" (1/1) ... [2025-01-23 19:53:12,434 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:53:12" (1/1) ... [2025-01-23 19:53:12,435 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:53:12" (1/1) ... [2025-01-23 19:53:12,437 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-23 19:53:12,437 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-23 19:53:12,437 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-23 19:53:12,437 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-23 19:53:12,438 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:53:12" (1/1) ... [2025-01-23 19:53:12,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-01-23 19:53:12,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:53:12,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2025-01-23 19:53:12,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2025-01-23 19:53:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-23 19:53:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-23 19:53:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-23 19:53:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-23 19:53:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-23 19:53:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-23 19:53:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-23 19:53:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-01-23 19:53:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-01-23 19:53:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-23 19:53:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-23 19:53:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-23 19:53:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-23 19:53:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-23 19:53:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-01-23 19:53:12,497 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-23 19:53:12,606 INFO L234 CfgBuilder]: Building ICFG [2025-01-23 19:53:12,607 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-23 19:53:12,908 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-23 19:53:12,908 INFO L283 CfgBuilder]: Performing block encoding [2025-01-23 19:53:13,167 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-23 19:53:13,167 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-23 19:53:13,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 07:53:13 BoogieIcfgContainer [2025-01-23 19:53:13,168 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-23 19:53:13,171 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-23 19:53:13,171 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-23 19:53:13,175 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-23 19:53:13,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 07:53:12" (1/3) ... [2025-01-23 19:53:13,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4ab59f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 07:53:13, skipping insertion in model container [2025-01-23 19:53:13,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 07:53:12" (2/3) ... [2025-01-23 19:53:13,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4ab59f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 07:53:13, skipping insertion in model container [2025-01-23 19:53:13,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 07:53:13" (3/3) ... [2025-01-23 19:53:13,180 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2025-01-23 19:53:13,189 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-23 19:53:13,190 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-array-sum-alt2.wvr.c that has 4 procedures, 30 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-01-23 19:53:13,190 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-23 19:53:13,240 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-01-23 19:53:13,280 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-23 19:53:13,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-01-23 19:53:13,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:53:13,285 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-01-23 19:53:13,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-01-23 19:53:13,381 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-01-23 19:53:13,394 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-01-23 19:53:13,403 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;@625a5f5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-23 19:53:13,403 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-01-23 19:53:13,850 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:53:13,851 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:53:13,852 INFO L139 ounterexampleChecker]: Examining path program with hash 2059123263, occurence #1 [2025-01-23 19:53:13,852 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-23 19:53:13,852 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:53:13,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:53:13,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1672953982, now seen corresponding path program 1 times [2025-01-23 19:53:13,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:53:13,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453524669] [2025-01-23 19:53:13,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 19:53:13,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:53:13,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-23 19:53:14,002 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-23 19:53:14,002 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:53:14,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:14,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:14,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:53:14,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453524669] [2025-01-23 19:53:14,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453524669] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-23 19:53:14,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-23 19:53:14,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-23 19:53:14,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193633586] [2025-01-23 19:53:14,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-23 19:53:14,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-23 19:53:14,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:53:14,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-23 19:53:14,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-23 19:53:14,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:14,418 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:53:14,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:53:14,419 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:14,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:14,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-23 19:53:14,541 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:53:14,541 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:53:14,541 INFO L139 ounterexampleChecker]: Examining path program with hash 2059123263, occurence #2 [2025-01-23 19:53:14,541 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:53:14,543 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:53:14,543 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:53:14,543 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 3 [2025-01-23 19:53:14,556 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:14,556 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 6 [2025-01-23 19:53:14,557 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:14,557 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 9 [2025-01-23 19:53:14,557 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:14,557 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 22 [2025-01-23 19:53:14,769 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-23 19:53:14,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 40 [2025-01-23 19:53:16,115 WARN L331 ript$VariableManager]: TermVariable |v_thread3Thread1of1ForFork1_~i~2#1_In_1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2025-01-23 19:53:16,115 WARN L331 ript$VariableManager]: TermVariable v_~A~0.offset_In_1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2025-01-23 19:53:16,115 WARN L331 ript$VariableManager]: TermVariable |v_thread2Thread1of1ForFork0_~i~1#1_In_1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2025-01-23 19:53:16,116 WARN L331 ript$VariableManager]: TermVariable v_~A~0.base_In_1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2025-01-23 19:53:16,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:53:16,117 INFO L85 PathProgramCache]: Analyzing trace with hash 629998663, now seen corresponding path program 1 times [2025-01-23 19:53:16,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SMTINTERPOL [2025-01-23 19:53:16,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863586763] [2025-01-23 19:53:16,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 19:53:16,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:53:16,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-23 19:53:16,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-23 19:53:16,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:53:16,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:16,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:16,418 INFO L136 FreeRefinementEngine]: Strategy SMTINTERPOL found an infeasible trace [2025-01-23 19:53:16,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863586763] [2025-01-23 19:53:16,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863586763] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:53:16,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolSpWp [2096372779] [2025-01-23 19:53:16,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 19:53:16,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:53:16,437 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-23 19:53:16,461 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-23 19:53:16,462 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:53:16,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:16,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-23 19:53:16,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:53:16,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:16,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolSpWp [2096372779] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:53:16,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-23 19:53:16,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2025-01-23 19:53:16,609 INFO L195 ounterexampleChecker]: Commutativity condition check failed due to imperfect proof (attempt 1 of 1). [2025-01-23 19:53:16,610 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 32 [2025-01-23 19:53:16,610 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:16,610 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:53:16,610 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:53:16,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:53:16,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1690703641, now seen corresponding path program 1 times [2025-01-23 19:53:16,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:53:16,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482273218] [2025-01-23 19:53:16,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 19:53:16,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:53:16,623 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-01-23 19:53:16,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-01-23 19:53:16,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:53:16,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:16,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:53:16,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482273218] [2025-01-23 19:53:16,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482273218] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:53:16,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527827496] [2025-01-23 19:53:16,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 19:53:16,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:53:16,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:53:16,868 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:53:16,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-23 19:53:16,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-01-23 19:53:16,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-01-23 19:53:16,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:53:16,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:16,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-23 19:53:16,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:53:17,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:17,118 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:53:17,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:17,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527827496] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:53:17,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:53:17,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2025-01-23 19:53:17,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617666869] [2025-01-23 19:53:17,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:53:17,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-23 19:53:17,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:53:17,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-23 19:53:17,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2025-01-23 19:53:17,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:17,250 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:53:17,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 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) [2025-01-23 19:53:17,250 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:17,250 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:17,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:17,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:17,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-23 19:53:17,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,SelfDestructingSolverStorable2,SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:53:17,611 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:53:17,611 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:53:17,611 INFO L139 ounterexampleChecker]: Examining path program with hash 2059123263, occurence #3 [2025-01-23 19:53:17,611 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:53:17,611 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:53:17,611 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:53:17,611 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2025-01-23 19:53:17,611 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:17,611 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 7 [2025-01-23 19:53:17,612 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:17,612 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 10 [2025-01-23 19:53:17,612 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:17,612 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 23 [2025-01-23 19:53:17,769 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-23 19:53:17,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 40 [2025-01-23 19:53:20,166 WARN L331 ript$VariableManager]: TermVariable |v_thread2Thread1of1ForFork0_~i~1#1_In_2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2025-01-23 19:53:20,167 WARN L331 ript$VariableManager]: TermVariable |v_thread3Thread1of1ForFork1_~i~2#1_In_2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2025-01-23 19:53:20,167 WARN L331 ript$VariableManager]: TermVariable v_~A~0.base_In_2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2025-01-23 19:53:20,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:53:20,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2081933317, now seen corresponding path program 1 times [2025-01-23 19:53:20,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SMTINTERPOL [2025-01-23 19:53:20,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227455784] [2025-01-23 19:53:20,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 19:53:20,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:53:20,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-23 19:53:20,196 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-23 19:53:20,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:53:20,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:20,333 INFO L136 FreeRefinementEngine]: Strategy SMTINTERPOL found an infeasible trace [2025-01-23 19:53:20,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227455784] [2025-01-23 19:53:20,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227455784] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:53:20,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolSpWp [550818654] [2025-01-23 19:53:20,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-23 19:53:20,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:53:20,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-23 19:53:20,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-23 19:53:20,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:53:20,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:20,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-23 19:53:20,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:53:20,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:20,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolSpWp [550818654] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:53:20,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-23 19:53:20,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2025-01-23 19:53:20,463 INFO L195 ounterexampleChecker]: Commutativity condition check failed due to imperfect proof (attempt 1 of 1). [2025-01-23 19:53:20,463 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 33 [2025-01-23 19:53:20,463 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:20,463 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:53:20,463 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:53:20,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:53:20,463 INFO L85 PathProgramCache]: Analyzing trace with hash 2054024226, now seen corresponding path program 2 times [2025-01-23 19:53:20,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:53:20,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791845579] [2025-01-23 19:53:20,464 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-23 19:53:20,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:53:20,474 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-01-23 19:53:20,483 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 34 of 36 statements. [2025-01-23 19:53:20,487 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-23 19:53:20,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:20,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-23 19:53:20,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:53:20,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791845579] [2025-01-23 19:53:20,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791845579] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-23 19:53:20,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-23 19:53:20,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-23 19:53:20,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488409497] [2025-01-23 19:53:20,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-23 19:53:20,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-23 19:53:20,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:53:20,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-23 19:53:20,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-01-23 19:53:20,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:20,648 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:53:20,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:53:20,648 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:20,648 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:20,648 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:20,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:20,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:20,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:20,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,SelfDestructingSolverStorable6,SelfDestructingSolverStorable5 [2025-01-23 19:53:20,812 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:53:20,812 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:53:20,812 INFO L139 ounterexampleChecker]: Examining path program with hash 1393858625, occurence #1 [2025-01-23 19:53:20,812 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-23 19:53:20,813 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:53:20,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:53:20,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1677434471, now seen corresponding path program 3 times [2025-01-23 19:53:20,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:53:20,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544750114] [2025-01-23 19:53:20,813 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-23 19:53:20,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:53:20,823 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 3 equivalence classes. [2025-01-23 19:53:20,860 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 42 of 42 statements. [2025-01-23 19:53:20,861 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-23 19:53:20,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:21,095 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:21,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:53:21,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544750114] [2025-01-23 19:53:21,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544750114] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:53:21,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233195308] [2025-01-23 19:53:21,096 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-23 19:53:21,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:53:21,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:53:21,099 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:53:21,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-23 19:53:21,159 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 3 equivalence classes. [2025-01-23 19:53:21,199 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 42 of 42 statements. [2025-01-23 19:53:21,200 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-23 19:53:21,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:21,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-23 19:53:21,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:53:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:21,441 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:53:21,600 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:21,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233195308] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:53:21,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:53:21,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 24 [2025-01-23 19:53:21,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256410488] [2025-01-23 19:53:21,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:53:21,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-23 19:53:21,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:53:21,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-23 19:53:21,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2025-01-23 19:53:21,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:21,602 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:53:21,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.4) internal successors, (110), 24 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:53:21,603 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:21,603 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:21,603 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:21,603 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:53:21,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-23 19:53:21,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:53:21,991 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:53:21,991 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:53:21,991 INFO L139 ounterexampleChecker]: Examining path program with hash 1393858625, occurence #2 [2025-01-23 19:53:21,991 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:53:21,991 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:53:21,992 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:53:21,992 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 5 [2025-01-23 19:53:21,992 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:21,992 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 8 [2025-01-23 19:53:21,992 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:21,992 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 11 [2025-01-23 19:53:21,992 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:21,992 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 39 [2025-01-23 19:53:21,992 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:21,992 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:53:21,992 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:53:21,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:53:21,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1900259842, now seen corresponding path program 4 times [2025-01-23 19:53:21,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:53:21,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359653237] [2025-01-23 19:53:21,993 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-23 19:53:21,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:53:22,006 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-01-23 19:53:22,011 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 32 of 43 statements. [2025-01-23 19:53:22,011 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-23 19:53:22,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:22,101 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-23 19:53:22,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:53:22,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359653237] [2025-01-23 19:53:22,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359653237] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:53:22,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423282715] [2025-01-23 19:53:22,102 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-23 19:53:22,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:53:22,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:53:22,104 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:53:22,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-23 19:53:22,169 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-01-23 19:53:22,184 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 32 of 43 statements. [2025-01-23 19:53:22,184 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-23 19:53:22,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:22,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-23 19:53:22,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:53:22,386 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-23 19:53:22,387 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:53:22,541 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-23 19:53:22,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423282715] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:53:22,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:53:22,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 10] total 23 [2025-01-23 19:53:22,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048127032] [2025-01-23 19:53:22,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:53:22,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-23 19:53:22,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:53:22,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-23 19:53:22,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2025-01-23 19:53:22,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:22,543 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:53:22,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.652173913043478) internal successors, (84), 23 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:53:22,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:22,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:22,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:22,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:53:22,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:23,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:23,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:23,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:23,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:53:23,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-01-23 19:53:23,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-23 19:53:23,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:53:23,764 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:53:23,764 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:53:23,765 INFO L139 ounterexampleChecker]: Examining path program with hash -1262138068, occurence #1 [2025-01-23 19:53:23,765 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-23 19:53:23,765 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:53:23,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:53:23,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1665090649, now seen corresponding path program 5 times [2025-01-23 19:53:23,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:53:23,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129196189] [2025-01-23 19:53:23,765 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-23 19:53:23,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:53:23,776 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 67 statements into 5 equivalence classes. [2025-01-23 19:53:23,828 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 67 of 67 statements. [2025-01-23 19:53:23,828 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-01-23 19:53:23,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:24,074 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 62 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:24,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:53:24,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129196189] [2025-01-23 19:53:24,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129196189] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:53:24,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265453216] [2025-01-23 19:53:24,074 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-23 19:53:24,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:53:24,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:53:24,078 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:53:24,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-23 19:53:24,143 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 67 statements into 5 equivalence classes. [2025-01-23 19:53:24,212 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 67 of 67 statements. [2025-01-23 19:53:24,212 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-01-23 19:53:24,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:24,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-23 19:53:24,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:53:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 62 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:24,431 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:53:24,607 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 62 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:24,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265453216] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:53:24,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:53:24,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2025-01-23 19:53:24,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015499753] [2025-01-23 19:53:24,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:53:24,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-01-23 19:53:24,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:53:24,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-01-23 19:53:24,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2025-01-23 19:53:24,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:24,611 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:53:24,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 26 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:53:24,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:24,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:24,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:24,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:53:24,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 56 states. [2025-01-23 19:53:24,611 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:24,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:24,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:53:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-01-23 19:53:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:53:24,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-23 19:53:24,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-01-23 19:53:24,936 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:53:24,936 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:53:24,936 INFO L139 ounterexampleChecker]: Examining path program with hash -1262138068, occurence #2 [2025-01-23 19:53:24,936 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:53:24,936 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:53:24,936 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:53:24,936 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 7 [2025-01-23 19:53:24,936 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:24,936 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 10 [2025-01-23 19:53:24,936 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:24,937 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 13 [2025-01-23 19:53:24,937 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:24,937 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 65 [2025-01-23 19:53:24,937 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:24,937 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:53:24,937 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:53:24,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:53:24,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1196043193, now seen corresponding path program 6 times [2025-01-23 19:53:24,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:53:24,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411715048] [2025-01-23 19:53:24,937 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-23 19:53:24,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:53:24,952 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 69 statements into 5 equivalence classes. [2025-01-23 19:53:25,053 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 69 of 69 statements. [2025-01-23 19:53:25,053 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-01-23 19:53:25,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:25,420 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 11 proven. 50 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-23 19:53:25,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:53:25,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411715048] [2025-01-23 19:53:25,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411715048] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:53:25,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010416127] [2025-01-23 19:53:25,421 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-23 19:53:25,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:53:25,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:53:25,423 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:53:25,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-23 19:53:25,492 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 69 statements into 5 equivalence classes. [2025-01-23 19:53:25,541 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 69 of 69 statements. [2025-01-23 19:53:25,542 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-01-23 19:53:25,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:25,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-23 19:53:25,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:53:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 35 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-23 19:53:25,900 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:53:26,255 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 61 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-23 19:53:26,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010416127] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:53:26,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:53:26,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 15] total 39 [2025-01-23 19:53:26,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469092825] [2025-01-23 19:53:26,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:53:26,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-01-23 19:53:26,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:53:26,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-01-23 19:53:26,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1254, Unknown=0, NotChecked=0, Total=1482 [2025-01-23 19:53:26,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:26,258 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:53:26,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.076923076923077) internal successors, (159), 39 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:53:26,258 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:26,258 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:26,259 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:26,259 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:53:26,259 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 56 states. [2025-01-23 19:53:26,259 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:53:26,259 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:27,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:27,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:27,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:27,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:53:27,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:53:27,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:53:27,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:53:27,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-23 19:53:27,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-01-23 19:53:27,366 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:53:27,366 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:53:27,366 INFO L139 ounterexampleChecker]: Examining path program with hash -742967039, occurence #1 [2025-01-23 19:53:27,366 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-23 19:53:27,366 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:53:27,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:53:27,367 INFO L85 PathProgramCache]: Analyzing trace with hash 432349158, now seen corresponding path program 7 times [2025-01-23 19:53:27,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:53:27,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012927163] [2025-01-23 19:53:27,367 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-23 19:53:27,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:53:27,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-01-23 19:53:27,387 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-01-23 19:53:27,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:53:27,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:27,707 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 10 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:27,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:53:27,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012927163] [2025-01-23 19:53:27,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012927163] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:53:27,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603044379] [2025-01-23 19:53:27,708 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-23 19:53:27,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:53:27,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:53:27,710 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:53:27,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-23 19:53:27,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-01-23 19:53:27,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-01-23 19:53:27,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:53:27,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:27,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-23 19:53:27,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:53:28,172 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 32 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:28,172 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:53:28,576 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 48 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:28,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603044379] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:53:28,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:53:28,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 46 [2025-01-23 19:53:28,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527388771] [2025-01-23 19:53:28,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:53:28,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-01-23 19:53:28,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:53:28,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-01-23 19:53:28,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=1820, Unknown=0, NotChecked=0, Total=2162 [2025-01-23 19:53:28,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:28,579 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:53:28,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.425531914893617) internal successors, (161), 46 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:53:28,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:28,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:28,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:28,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:53:28,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:53:28,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:53:28,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:53:28,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:29,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:29,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:29,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:29,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:53:29,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:53:29,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:53:29,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:53:29,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:53:29,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-23 19:53:29,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:53:29,288 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:53:29,289 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:53:29,289 INFO L139 ounterexampleChecker]: Examining path program with hash -742967039, occurence #2 [2025-01-23 19:53:29,289 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:53:29,289 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:53:29,289 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:53:29,289 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 9 [2025-01-23 19:53:29,289 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:29,289 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 12 [2025-01-23 19:53:29,289 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:29,289 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 15 [2025-01-23 19:53:29,289 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:29,290 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 75 [2025-01-23 19:53:29,290 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:29,290 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:53:29,290 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:53:29,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:53:29,290 INFO L85 PathProgramCache]: Analyzing trace with hash 403546625, now seen corresponding path program 8 times [2025-01-23 19:53:29,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:53:29,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097545471] [2025-01-23 19:53:29,290 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-23 19:53:29,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:53:29,300 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-01-23 19:53:29,317 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-01-23 19:53:29,317 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-23 19:53:29,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:29,900 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 73 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:29,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:53:29,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097545471] [2025-01-23 19:53:29,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097545471] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:53:29,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156182463] [2025-01-23 19:53:29,901 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-23 19:53:29,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:53:29,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:53:29,904 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:53:29,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-23 19:53:29,983 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-01-23 19:53:30,037 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-01-23 19:53:30,037 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-23 19:53:30,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:30,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-23 19:53:30,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:53:30,535 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 107 proven. 37 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-23 19:53:30,536 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:53:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 116 proven. 28 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-23 19:53:31,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156182463] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:53:31,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:53:31,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 19] total 56 [2025-01-23 19:53:31,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607107890] [2025-01-23 19:53:31,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:53:31,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-01-23 19:53:31,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:53:31,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-01-23 19:53:31,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=616, Invalid=2576, Unknown=0, NotChecked=0, Total=3192 [2025-01-23 19:53:31,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:31,008 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:53:31,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.1578947368421053) internal successors, (180), 56 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:53:31,008 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:31,009 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:31,009 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:31,009 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:53:31,009 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:53:31,009 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:53:31,009 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:53:31,009 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:53:31,009 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:53:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:53:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:53:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:53:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:53:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:53:31,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-23 19:53:31,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:53:31,413 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:53:31,413 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:53:31,413 INFO L139 ounterexampleChecker]: Examining path program with hash -742967039, occurence #3 [2025-01-23 19:53:31,413 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:53:31,413 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:53:31,413 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:53:31,413 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 10 [2025-01-23 19:53:31,413 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:31,413 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 13 [2025-01-23 19:53:31,413 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:31,413 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 16 [2025-01-23 19:53:31,414 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:31,414 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 76 [2025-01-23 19:53:31,414 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:31,414 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:53:31,414 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:53:31,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:53:31,414 INFO L85 PathProgramCache]: Analyzing trace with hash -2104483162, now seen corresponding path program 9 times [2025-01-23 19:53:31,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:53:31,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285431798] [2025-01-23 19:53:31,414 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-23 19:53:31,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:53:31,426 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 81 statements into 6 equivalence classes. [2025-01-23 19:53:31,579 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 81 of 81 statements. [2025-01-23 19:53:31,580 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-23 19:53:31,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:32,012 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 21 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:32,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:53:32,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285431798] [2025-01-23 19:53:32,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285431798] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:53:32,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623702490] [2025-01-23 19:53:32,013 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-23 19:53:32,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:53:32,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:53:32,015 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:53:32,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-23 19:53:32,090 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 81 statements into 6 equivalence classes. [2025-01-23 19:53:32,164 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 81 of 81 statements. [2025-01-23 19:53:32,164 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-23 19:53:32,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:32,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-23 19:53:32,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:53:32,716 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 97 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:32,717 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:53:33,369 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 125 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:33,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623702490] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:53:33,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:53:33,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23, 23] total 63 [2025-01-23 19:53:33,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705277843] [2025-01-23 19:53:33,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:53:33,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-01-23 19:53:33,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:53:33,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-01-23 19:53:33,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=670, Invalid=3362, Unknown=0, NotChecked=0, Total=4032 [2025-01-23 19:53:33,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:33,373 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:53:33,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.515625) internal successors, (225), 63 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:53:33,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:33,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:33,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:33,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:53:33,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:53:33,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:53:33,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:53:33,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:53:33,374 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:53:33,374 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:34,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:34,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:34,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:34,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:53:34,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:53:34,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:53:34,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:53:34,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:53:34,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:53:34,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:53:34,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-23 19:53:34,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:53:34,217 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:53:34,217 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:53:34,217 INFO L139 ounterexampleChecker]: Examining path program with hash -742967039, occurence #4 [2025-01-23 19:53:34,217 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:53:34,217 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:53:34,217 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:53:34,217 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 13 [2025-01-23 19:53:34,217 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:34,217 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 16 [2025-01-23 19:53:34,217 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:34,217 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 19 [2025-01-23 19:53:34,217 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:34,217 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 97 [2025-01-23 19:53:34,217 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:34,217 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:53:34,217 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:53:34,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:53:34,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1978748385, now seen corresponding path program 10 times [2025-01-23 19:53:34,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:53:34,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775523137] [2025-01-23 19:53:34,218 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-23 19:53:34,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:53:34,231 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 102 statements into 2 equivalence classes. [2025-01-23 19:53:34,236 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 66 of 102 statements. [2025-01-23 19:53:34,236 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-23 19:53:34,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:34,461 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 177 proven. 61 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-01-23 19:53:34,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:53:34,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775523137] [2025-01-23 19:53:34,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775523137] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:53:34,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024473129] [2025-01-23 19:53:34,462 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-23 19:53:34,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:53:34,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:53:34,464 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:53:34,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-23 19:53:34,548 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 102 statements into 2 equivalence classes. [2025-01-23 19:53:34,569 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 66 of 102 statements. [2025-01-23 19:53:34,569 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-23 19:53:34,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:34,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-23 19:53:34,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:53:35,374 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-01-23 19:53:35,374 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:53:35,873 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 177 proven. 61 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-01-23 19:53:35,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024473129] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:53:35,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:53:35,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 29, 23] total 63 [2025-01-23 19:53:35,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046638585] [2025-01-23 19:53:35,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:53:35,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2025-01-23 19:53:35,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:53:35,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2025-01-23 19:53:35,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=870, Invalid=3036, Unknown=0, NotChecked=0, Total=3906 [2025-01-23 19:53:35,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:35,875 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:53:35,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.0476190476190474) internal successors, (255), 63 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:53:35,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:35,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:35,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:35,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:53:35,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:53:35,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:53:35,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:53:35,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:53:35,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:53:35,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:53:35,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:39,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:39,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:39,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:39,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:53:39,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:53:39,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:53:39,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:53:39,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:53:39,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:53:39,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:53:39,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:53:39,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-23 19:53:39,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-01-23 19:53:39,329 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:53:39,329 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:53:39,329 INFO L139 ounterexampleChecker]: Examining path program with hash -531440874, occurence #1 [2025-01-23 19:53:39,329 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-01-23 19:53:39,329 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:53:39,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:53:39,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2048102593, now seen corresponding path program 11 times [2025-01-23 19:53:39,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:53:39,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709621188] [2025-01-23 19:53:39,330 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-23 19:53:39,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:53:39,347 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 129 statements into 10 equivalence classes. [2025-01-23 19:53:39,566 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 129 of 129 statements. [2025-01-23 19:53:39,566 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-01-23 19:53:39,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:40,341 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 399 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:40,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:53:40,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709621188] [2025-01-23 19:53:40,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709621188] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:53:40,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320845950] [2025-01-23 19:53:40,342 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-23 19:53:40,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:53:40,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:53:40,343 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:53:40,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-23 19:53:40,421 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 129 statements into 10 equivalence classes. [2025-01-23 19:53:40,680 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 129 of 129 statements. [2025-01-23 19:53:40,680 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-01-23 19:53:40,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:40,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-01-23 19:53:40,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:53:41,536 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 363 proven. 90 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-23 19:53:41,536 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:53:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 387 proven. 66 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-23 19:53:42,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320845950] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:53:42,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:53:42,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 33, 33] total 91 [2025-01-23 19:53:42,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648445711] [2025-01-23 19:53:42,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:53:42,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2025-01-23 19:53:42,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:53:42,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2025-01-23 19:53:42,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1673, Invalid=6699, Unknown=0, NotChecked=0, Total=8372 [2025-01-23 19:53:42,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:42,544 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:53:42,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 3.6739130434782608) internal successors, (338), 91 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:53:42,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:42,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:42,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:42,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:53:42,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:53:42,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:53:42,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:53:42,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:53:42,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:53:42,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:53:42,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:53:42,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:53:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:53:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:53:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:53:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:53:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:53:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:53:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:53:42,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:53:42,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-23 19:53:42,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-23 19:53:42,876 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:53:42,876 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:53:42,876 INFO L139 ounterexampleChecker]: Examining path program with hash -531440874, occurence #2 [2025-01-23 19:53:42,876 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:53:42,877 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:53:42,877 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:53:42,877 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 20 [2025-01-23 19:53:42,877 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:42,877 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 23 [2025-01-23 19:53:42,877 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:42,877 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 26 [2025-01-23 19:53:42,877 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:42,877 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 123 [2025-01-23 19:53:42,877 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:53:42,877 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 126 [2025-01-23 19:53:42,877 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:53:42,877 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 129 [2025-01-23 19:53:42,877 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:53:42,877 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 131 [2025-01-23 19:53:42,877 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:42,877 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:53:42,877 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:53:42,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:53:42,877 INFO L85 PathProgramCache]: Analyzing trace with hash 20123418, now seen corresponding path program 12 times [2025-01-23 19:53:42,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:53:42,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703459954] [2025-01-23 19:53:42,878 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-23 19:53:42,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:53:42,894 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 136 statements into 10 equivalence classes. [2025-01-23 19:53:43,246 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 136 of 136 statements. [2025-01-23 19:53:43,248 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-01-23 19:53:43,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:43,956 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 58 proven. 263 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2025-01-23 19:53:43,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:53:43,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703459954] [2025-01-23 19:53:43,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703459954] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:53:43,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580141049] [2025-01-23 19:53:43,958 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-23 19:53:43,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:53:43,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:53:43,960 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:53:43,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-23 19:53:44,062 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 136 statements into 10 equivalence classes. [2025-01-23 19:53:44,625 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 136 of 136 statements. [2025-01-23 19:53:44,625 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-01-23 19:53:44,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:44,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-01-23 19:53:44,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:53:45,509 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 399 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2025-01-23 19:53:45,509 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:53:46,125 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 308 proven. 91 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2025-01-23 19:53:46,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580141049] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:53:46,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:53:46,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 38, 30] total 77 [2025-01-23 19:53:46,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627942517] [2025-01-23 19:53:46,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:53:46,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2025-01-23 19:53:46,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:53:46,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2025-01-23 19:53:46,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1093, Invalid=4759, Unknown=0, NotChecked=0, Total=5852 [2025-01-23 19:53:46,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:46,129 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:53:46,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.7662337662337664) internal successors, (290), 77 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:53:46,129 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:46,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:46,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:46,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:53:46,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:53:46,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:53:46,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:53:46,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:53:46,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:53:46,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:53:46,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:53:46,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:53:46,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:49,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:49,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:49,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:49,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:53:49,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:53:49,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:53:49,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:53:49,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:53:49,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:53:49,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:53:49,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:53:49,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:53:49,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2025-01-23 19:53:49,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-23 19:53:49,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-23 19:53:49,750 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:53:49,751 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:53:49,751 INFO L139 ounterexampleChecker]: Examining path program with hash -531440874, occurence #3 [2025-01-23 19:53:49,751 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:53:49,751 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:53:49,751 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:53:49,751 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 20 [2025-01-23 19:53:49,751 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:49,751 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 23 [2025-01-23 19:53:49,751 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:49,751 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 26 [2025-01-23 19:53:49,751 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:49,751 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 168 [2025-01-23 19:53:49,751 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:53:49,751 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 171 [2025-01-23 19:53:49,751 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:53:49,751 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 174 [2025-01-23 19:53:49,751 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:53:49,751 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 177 [2025-01-23 19:53:49,752 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:53:49,752 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 179 [2025-01-23 19:53:49,752 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:49,752 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:53:49,752 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:53:49,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:53:49,752 INFO L85 PathProgramCache]: Analyzing trace with hash -16186871, now seen corresponding path program 13 times [2025-01-23 19:53:49,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:53:49,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931263027] [2025-01-23 19:53:49,752 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-23 19:53:49,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:53:49,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 184 statements into 1 equivalence classes. [2025-01-23 19:53:49,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 184 of 184 statements. [2025-01-23 19:53:49,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:53:49,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 737 proven. 373 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:53,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:53:53,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931263027] [2025-01-23 19:53:53,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931263027] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:53:53,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3105927] [2025-01-23 19:53:53,053 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-23 19:53:53,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:53:53,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:53:53,055 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:53:53,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-23 19:53:53,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 184 statements into 1 equivalence classes. [2025-01-23 19:53:53,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 184 of 184 statements. [2025-01-23 19:53:53,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:53:53,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:53,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-01-23 19:53:53,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:53:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 760 proven. 223 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2025-01-23 19:53:55,289 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:53:57,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 812 proven. 171 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2025-01-23 19:53:57,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3105927] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:53:57,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:53:57,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 41, 41] total 150 [2025-01-23 19:53:57,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345184977] [2025-01-23 19:53:57,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:53:57,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2025-01-23 19:53:57,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:53:57,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2025-01-23 19:53:57,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3166, Invalid=19484, Unknown=0, NotChecked=0, Total=22650 [2025-01-23 19:53:57,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:57,570 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:53:57,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 151 states, 151 states have (on average 2.7549668874172184) internal successors, (416), 150 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:53:57,570 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:57,570 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:57,570 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:57,570 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:53:57,570 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:53:57,570 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:53:57,570 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:53:57,570 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:53:57,570 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:53:57,570 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:53:57,570 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:53:57,570 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:53:57,570 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 127 states. [2025-01-23 19:53:57,570 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:53:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:53:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:53:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:53:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:53:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:53:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:53:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:53:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:53:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:53:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:53:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:53:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:53:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2025-01-23 19:53:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:53:57,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-23 19:53:57,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-23 19:53:57,997 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:53:57,997 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:53:57,997 INFO L139 ounterexampleChecker]: Examining path program with hash -531440874, occurence #4 [2025-01-23 19:53:57,997 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:53:57,997 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:53:57,997 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:53:57,997 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 21 [2025-01-23 19:53:57,997 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:57,997 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 24 [2025-01-23 19:53:57,997 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:57,997 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 27 [2025-01-23 19:53:57,997 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:57,997 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 169 [2025-01-23 19:53:57,997 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:53:57,998 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 172 [2025-01-23 19:53:57,998 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:53:57,998 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 175 [2025-01-23 19:53:57,998 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:53:57,998 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 178 [2025-01-23 19:53:57,998 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:53:57,998 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 180 [2025-01-23 19:53:57,998 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:53:57,998 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:53:57,998 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:53:57,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:53:57,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1199018414, now seen corresponding path program 14 times [2025-01-23 19:53:57,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:53:57,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611560604] [2025-01-23 19:53:57,998 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-23 19:53:57,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:53:58,019 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 185 statements into 2 equivalence classes. [2025-01-23 19:53:58,048 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 185 of 185 statements. [2025-01-23 19:53:58,048 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-23 19:53:58,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:59,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 897 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:53:59,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:53:59,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611560604] [2025-01-23 19:53:59,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611560604] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:53:59,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385447919] [2025-01-23 19:53:59,581 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-23 19:53:59,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:53:59,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:53:59,583 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:53:59,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-23 19:53:59,695 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 185 statements into 2 equivalence classes. [2025-01-23 19:53:59,783 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 185 of 185 statements. [2025-01-23 19:53:59,784 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-23 19:53:59,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:53:59,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-01-23 19:53:59,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:54:01,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 800 proven. 217 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-01-23 19:54:01,354 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:54:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 827 proven. 190 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-01-23 19:54:03,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385447919] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:54:03,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:54:03,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 43, 43] total 124 [2025-01-23 19:54:03,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249864198] [2025-01-23 19:54:03,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:54:03,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2025-01-23 19:54:03,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:54:03,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2025-01-23 19:54:03,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2710, Invalid=12790, Unknown=0, NotChecked=0, Total=15500 [2025-01-23 19:54:03,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:54:03,283 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:54:03,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 3.4) internal successors, (425), 124 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:54:03,283 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:54:03,283 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:54:03,283 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:54:03,283 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:54:03,283 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:54:03,283 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:54:03,283 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:54:03,283 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:54:03,283 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:54:03,283 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:54:03,283 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:54:03,283 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:54:03,284 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 127 states. [2025-01-23 19:54:03,284 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:54:03,284 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:54:03,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:54:03,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:54:03,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:54:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:54:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:54:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:54:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:54:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:54:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:54:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:54:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:54:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:54:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2025-01-23 19:54:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:54:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-23 19:54:03,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-23 19:54:03,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:54:03,666 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:54:03,666 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:54:03,666 INFO L139 ounterexampleChecker]: Examining path program with hash -531440874, occurence #5 [2025-01-23 19:54:03,666 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:54:03,666 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:54:03,666 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:03,666 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 22 [2025-01-23 19:54:03,666 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:54:03,666 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 25 [2025-01-23 19:54:03,666 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:54:03,667 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 28 [2025-01-23 19:54:03,667 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:54:03,667 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 170 [2025-01-23 19:54:03,667 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:03,667 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 173 [2025-01-23 19:54:03,667 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:03,667 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 176 [2025-01-23 19:54:03,667 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:03,667 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 179 [2025-01-23 19:54:03,667 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:03,667 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 181 [2025-01-23 19:54:03,667 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:54:03,667 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:54:03,667 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:54:03,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:54:03,668 INFO L85 PathProgramCache]: Analyzing trace with hash 215676585, now seen corresponding path program 15 times [2025-01-23 19:54:03,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:54:03,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728187449] [2025-01-23 19:54:03,668 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-23 19:54:03,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:54:03,688 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 186 statements into 15 equivalence classes. [2025-01-23 19:54:04,924 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 186 of 186 statements. [2025-01-23 19:54:04,925 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-01-23 19:54:04,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:54:06,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 757 proven. 370 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-23 19:54:06,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:54:06,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728187449] [2025-01-23 19:54:06,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728187449] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:54:06,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643788571] [2025-01-23 19:54:06,869 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-23 19:54:06,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:54:06,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:54:06,871 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:54:06,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-23 19:54:06,989 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 186 statements into 15 equivalence classes. [2025-01-23 19:54:08,063 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 186 of 186 statements. [2025-01-23 19:54:08,064 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-01-23 19:54:08,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:54:08,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-01-23 19:54:08,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:54:10,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 835 proven. 292 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-23 19:54:10,694 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:54:13,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 917 proven. 210 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-23 19:54:13,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643788571] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:54:13,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:54:13,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 156 [2025-01-23 19:54:13,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514516463] [2025-01-23 19:54:13,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:54:13,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 157 states [2025-01-23 19:54:13,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:54:13,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2025-01-23 19:54:13,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5450, Invalid=19042, Unknown=0, NotChecked=0, Total=24492 [2025-01-23 19:54:13,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:54:13,558 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:54:13,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 157 states, 157 states have (on average 3.1337579617834397) internal successors, (492), 156 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:54:13,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:54:13,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:54:13,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:54:13,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:54:13,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:54:13,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:54:13,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:54:13,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:54:13,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:54:13,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:54:13,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:54:13,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:54:13,558 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 127 states. [2025-01-23 19:54:13,559 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:54:13,559 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2025-01-23 19:54:13,559 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:54:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:54:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:54:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:54:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:54:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:54:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:54:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:54:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:54:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:54:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:54:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:54:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:54:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2025-01-23 19:54:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:54:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-23 19:54:13,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-23 19:54:13,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-23 19:54:13,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:54:13,952 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:54:13,952 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:54:13,953 INFO L139 ounterexampleChecker]: Examining path program with hash -531440874, occurence #6 [2025-01-23 19:54:13,953 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:54:13,953 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:54:13,953 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:13,953 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 31 [2025-01-23 19:54:13,953 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:54:13,953 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 34 [2025-01-23 19:54:13,953 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:54:13,953 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 37 [2025-01-23 19:54:13,953 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:54:13,953 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 179 [2025-01-23 19:54:13,953 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:13,953 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 182 [2025-01-23 19:54:13,953 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:13,953 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 185 [2025-01-23 19:54:13,953 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:13,953 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 188 [2025-01-23 19:54:13,953 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:13,953 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 190 [2025-01-23 19:54:13,953 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:54:13,954 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:54:13,954 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:54:13,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:54:13,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1349828978, now seen corresponding path program 16 times [2025-01-23 19:54:13,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:54:13,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031271118] [2025-01-23 19:54:13,954 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-23 19:54:13,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:54:13,973 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 195 statements into 2 equivalence classes. [2025-01-23 19:54:13,981 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 116 of 195 statements. [2025-01-23 19:54:13,981 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-23 19:54:13,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:54:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1374 backedges. 793 proven. 146 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2025-01-23 19:54:14,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:54:14,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031271118] [2025-01-23 19:54:14,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031271118] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:54:14,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858649386] [2025-01-23 19:54:14,461 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-23 19:54:14,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:54:14,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:54:14,463 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:54:14,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-23 19:54:14,583 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 195 statements into 2 equivalence classes. [2025-01-23 19:54:14,607 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 116 of 195 statements. [2025-01-23 19:54:14,607 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-23 19:54:14,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:54:14,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-01-23 19:54:14,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:54:16,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1374 backedges. 0 proven. 939 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2025-01-23 19:54:16,336 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:54:17,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1374 backedges. 793 proven. 146 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2025-01-23 19:54:17,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858649386] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:54:17,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:54:17,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 54, 41] total 117 [2025-01-23 19:54:17,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309310422] [2025-01-23 19:54:17,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:54:17,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2025-01-23 19:54:17,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:54:17,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2025-01-23 19:54:17,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2826, Invalid=10746, Unknown=0, NotChecked=0, Total=13572 [2025-01-23 19:54:17,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:54:17,426 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:54:17,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 4.102564102564102) internal successors, (480), 117 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:54:17,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:54:17,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:54:17,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:54:17,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:54:17,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:54:17,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:54:17,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:54:17,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:54:17,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:54:17,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:54:17,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:54:17,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:54:17,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 127 states. [2025-01-23 19:54:17,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:54:17,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2025-01-23 19:54:17,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2025-01-23 19:54:17,426 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:54:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:54:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:54:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:54:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:54:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:54:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:54:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:54:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:54:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:54:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:54:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:54:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:54:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2025-01-23 19:54:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:54:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-23 19:54:23,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-23 19:54:23,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2025-01-23 19:54:23,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-23 19:54:24,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-01-23 19:54:24,012 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:54:24,012 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:54:24,013 INFO L139 ounterexampleChecker]: Examining path program with hash -531440874, occurence #7 [2025-01-23 19:54:24,013 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:54:24,013 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:54:24,013 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:24,013 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 31 [2025-01-23 19:54:24,013 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:54:24,013 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 34 [2025-01-23 19:54:24,013 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:54:24,013 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 37 [2025-01-23 19:54:24,013 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:54:24,013 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 233 [2025-01-23 19:54:24,013 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:24,013 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 236 [2025-01-23 19:54:24,013 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:24,013 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 239 [2025-01-23 19:54:24,013 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:24,013 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 242 [2025-01-23 19:54:24,014 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:24,014 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 245 [2025-01-23 19:54:24,014 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:24,014 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 248 [2025-01-23 19:54:24,014 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:24,014 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 251 [2025-01-23 19:54:24,014 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:24,014 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 254 [2025-01-23 19:54:24,014 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:24,014 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 257 [2025-01-23 19:54:24,014 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:24,014 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 260 [2025-01-23 19:54:24,014 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:24,014 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 263 [2025-01-23 19:54:24,014 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:24,014 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 265 [2025-01-23 19:54:24,014 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:54:24,014 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:54:24,014 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:54:24,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:54:24,015 INFO L85 PathProgramCache]: Analyzing trace with hash -916413262, now seen corresponding path program 17 times [2025-01-23 19:54:24,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:54:24,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078876913] [2025-01-23 19:54:24,015 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-23 19:54:24,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:54:24,039 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 270 statements into 21 equivalence classes. [2025-01-23 19:54:24,862 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) and asserted 270 of 270 statements. [2025-01-23 19:54:24,862 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2025-01-23 19:54:24,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:54:27,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2461 backedges. 2026 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:54:27,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:54:27,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078876913] [2025-01-23 19:54:27,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078876913] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:54:27,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651575252] [2025-01-23 19:54:27,586 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-23 19:54:27,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:54:27,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:54:27,588 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:54:27,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-23 19:54:27,743 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 270 statements into 21 equivalence classes. [2025-01-23 19:54:28,684 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) and asserted 270 of 270 statements. [2025-01-23 19:54:28,685 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2025-01-23 19:54:28,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:54:28,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 67 conjuncts are in the unsatisfiable core [2025-01-23 19:54:28,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:54:31,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2461 backedges. 2026 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:54:31,382 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:54:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2461 backedges. 2026 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:54:33,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651575252] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:54:33,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:54:33,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 162 [2025-01-23 19:54:33,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280497726] [2025-01-23 19:54:33,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:54:33,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 163 states [2025-01-23 19:54:33,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:54:33,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2025-01-23 19:54:33,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6126, Invalid=20280, Unknown=0, NotChecked=0, Total=26406 [2025-01-23 19:54:33,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:54:33,531 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:54:33,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 163 states, 163 states have (on average 3.687116564417178) internal successors, (601), 162 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:54:33,532 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:54:33,532 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:54:33,532 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:54:33,532 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:54:33,532 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:54:33,532 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:54:33,532 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:54:33,532 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:54:33,532 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:54:33,532 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:54:33,532 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:54:33,532 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:54:33,533 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 127 states. [2025-01-23 19:54:33,533 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:54:33,533 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2025-01-23 19:54:33,533 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2025-01-23 19:54:33,533 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 210 states. [2025-01-23 19:54:33,533 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:54:33,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:54:33,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:54:33,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:54:33,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:54:33,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:54:33,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:54:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:54:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:54:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:54:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:54:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:54:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:54:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2025-01-23 19:54:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:54:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-23 19:54:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-23 19:54:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2025-01-23 19:54:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-01-23 19:54:33,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-23 19:54:33,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:54:33,933 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:54:33,933 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:54:33,933 INFO L139 ounterexampleChecker]: Examining path program with hash -531440874, occurence #8 [2025-01-23 19:54:33,933 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:54:33,933 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:54:33,933 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:33,933 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 35 [2025-01-23 19:54:33,933 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:54:33,933 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 38 [2025-01-23 19:54:33,933 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:54:33,933 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 41 [2025-01-23 19:54:33,933 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:54:33,933 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 237 [2025-01-23 19:54:33,933 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:33,934 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 240 [2025-01-23 19:54:33,934 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:33,934 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 243 [2025-01-23 19:54:33,934 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:33,934 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 246 [2025-01-23 19:54:33,934 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:33,934 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 249 [2025-01-23 19:54:33,934 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:33,934 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 252 [2025-01-23 19:54:33,934 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:33,934 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 255 [2025-01-23 19:54:33,934 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:33,934 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 258 [2025-01-23 19:54:33,934 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:33,934 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 261 [2025-01-23 19:54:33,934 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:33,934 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 264 [2025-01-23 19:54:33,934 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:33,934 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 267 [2025-01-23 19:54:33,934 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:54:33,934 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 269 [2025-01-23 19:54:33,934 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:54:33,934 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:54:33,934 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:54:33,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:54:33,935 INFO L85 PathProgramCache]: Analyzing trace with hash -322996750, now seen corresponding path program 18 times [2025-01-23 19:54:33,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:54:33,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840126723] [2025-01-23 19:54:33,935 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-23 19:54:33,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:54:33,960 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 274 statements into 21 equivalence classes. [2025-01-23 19:54:35,051 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) and asserted 274 of 274 statements. [2025-01-23 19:54:35,052 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2025-01-23 19:54:35,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:54:38,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2587 backedges. 1618 proven. 793 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2025-01-23 19:54:38,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:54:38,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840126723] [2025-01-23 19:54:38,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840126723] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:54:38,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063595726] [2025-01-23 19:54:38,340 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-23 19:54:38,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:54:38,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:54:38,342 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:54:38,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-23 19:54:38,489 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 274 statements into 21 equivalence classes. [2025-01-23 19:54:51,587 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) and asserted 274 of 274 statements. [2025-01-23 19:54:51,587 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2025-01-23 19:54:51,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:54:51,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 80 conjuncts are in the unsatisfiable core [2025-01-23 19:54:51,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:54:57,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2587 backedges. 1732 proven. 679 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2025-01-23 19:54:57,091 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:55:02,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2587 backedges. 1850 proven. 561 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2025-01-23 19:55:02,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063595726] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:55:02,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:55:02,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78, 78] total 231 [2025-01-23 19:55:02,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299098400] [2025-01-23 19:55:02,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:55:02,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 232 states [2025-01-23 19:55:02,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:55:02,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2025-01-23 19:55:02,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11361, Invalid=42231, Unknown=0, NotChecked=0, Total=53592 [2025-01-23 19:55:02,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:55:02,882 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:55:02,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 232 states, 232 states have (on average 2.9870689655172415) internal successors, (693), 231 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:55:02,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:55:02,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:55:02,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:55:02,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:55:02,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:55:02,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:55:02,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:55:02,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:55:02,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:55:02,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:55:02,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:55:02,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:55:02,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 127 states. [2025-01-23 19:55:02,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:55:02,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2025-01-23 19:55:02,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2025-01-23 19:55:02,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 210 states. [2025-01-23 19:55:02,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2025-01-23 19:55:02,883 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:55:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:55:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:55:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:55:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:55:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:55:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:55:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:55:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:55:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:55:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:55:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:55:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:55:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2025-01-23 19:55:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:55:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-23 19:55:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-23 19:55:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2025-01-23 19:55:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-01-23 19:55:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-01-23 19:55:03,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-01-23 19:55:03,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:55:03,378 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:55:03,378 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:55:03,378 INFO L139 ounterexampleChecker]: Examining path program with hash -531440874, occurence #9 [2025-01-23 19:55:03,378 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:55:03,378 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:55:03,378 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:03,378 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 43 [2025-01-23 19:55:03,378 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:55:03,379 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 46 [2025-01-23 19:55:03,379 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:55:03,379 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 49 [2025-01-23 19:55:03,379 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:55:03,379 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 245 [2025-01-23 19:55:03,379 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:03,379 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 248 [2025-01-23 19:55:03,379 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:03,379 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 251 [2025-01-23 19:55:03,379 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:03,379 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 254 [2025-01-23 19:55:03,379 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:03,379 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 257 [2025-01-23 19:55:03,379 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:03,379 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 260 [2025-01-23 19:55:03,379 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:03,379 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 263 [2025-01-23 19:55:03,379 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:03,379 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 266 [2025-01-23 19:55:03,379 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:03,379 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 269 [2025-01-23 19:55:03,379 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:03,379 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 272 [2025-01-23 19:55:03,379 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:03,379 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 275 [2025-01-23 19:55:03,379 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:03,379 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 277 [2025-01-23 19:55:03,379 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:55:03,379 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:55:03,379 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:55:03,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:55:03,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1964165006, now seen corresponding path program 19 times [2025-01-23 19:55:03,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:55:03,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103771828] [2025-01-23 19:55:03,380 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-23 19:55:03,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:55:03,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 282 statements into 1 equivalence classes. [2025-01-23 19:55:03,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 282 of 282 statements. [2025-01-23 19:55:03,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:55:03,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:55:06,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2887 backedges. 780 proven. 2107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:55:06,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:55:06,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103771828] [2025-01-23 19:55:06,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103771828] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:55:06,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734552626] [2025-01-23 19:55:06,797 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-23 19:55:06,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:55:06,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:55:06,799 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:55:06,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-23 19:55:06,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 282 statements into 1 equivalence classes. [2025-01-23 19:55:07,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 282 of 282 statements. [2025-01-23 19:55:07,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-23 19:55:07,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:55:07,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 1344 conjuncts, 79 conjuncts are in the unsatisfiable core [2025-01-23 19:55:07,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:55:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2887 backedges. 820 proven. 2067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:55:09,784 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:55:12,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2887 backedges. 861 proven. 2026 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:55:12,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734552626] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:55:12,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:55:12,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77, 77] total 202 [2025-01-23 19:55:12,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555803702] [2025-01-23 19:55:12,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:55:12,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2025-01-23 19:55:12,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:55:12,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2025-01-23 19:55:12,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9802, Invalid=31204, Unknown=0, NotChecked=0, Total=41006 [2025-01-23 19:55:12,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:55:12,798 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:55:12,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 3.3300492610837438) internal successors, (676), 202 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:55:12,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:55:12,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:55:12,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:55:12,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:55:12,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:55:12,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:55:12,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:55:12,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:55:12,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:55:12,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:55:12,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:55:12,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:55:12,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 127 states. [2025-01-23 19:55:12,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:55:12,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2025-01-23 19:55:12,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2025-01-23 19:55:12,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 210 states. [2025-01-23 19:55:12,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2025-01-23 19:55:12,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2025-01-23 19:55:12,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:55:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:55:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:55:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:55:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:55:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:55:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:55:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:55:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:55:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:55:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:55:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:55:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:55:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2025-01-23 19:55:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:55:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-23 19:55:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-23 19:55:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2025-01-23 19:55:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-01-23 19:55:15,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-01-23 19:55:15,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2025-01-23 19:55:15,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-01-23 19:55:15,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-01-23 19:55:15,520 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:55:15,520 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:55:15,520 INFO L139 ounterexampleChecker]: Examining path program with hash -531440874, occurence #10 [2025-01-23 19:55:15,520 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:55:15,520 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:55:15,520 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:15,520 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 43 [2025-01-23 19:55:15,520 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:55:15,520 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 46 [2025-01-23 19:55:15,520 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:55:15,520 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 49 [2025-01-23 19:55:15,520 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:55:15,521 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 425 [2025-01-23 19:55:15,521 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:15,521 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 428 [2025-01-23 19:55:15,521 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:15,521 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 431 [2025-01-23 19:55:15,521 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:15,521 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 434 [2025-01-23 19:55:15,521 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:15,521 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 437 [2025-01-23 19:55:15,521 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:15,521 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 440 [2025-01-23 19:55:15,521 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:15,521 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 443 [2025-01-23 19:55:15,521 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:15,521 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 446 [2025-01-23 19:55:15,521 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:15,521 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 449 [2025-01-23 19:55:15,521 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:15,521 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 452 [2025-01-23 19:55:15,521 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:15,521 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 455 [2025-01-23 19:55:15,521 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:15,522 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 457 [2025-01-23 19:55:15,522 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:55:15,522 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:55:15,522 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:55:15,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:55:15,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1109890382, now seen corresponding path program 20 times [2025-01-23 19:55:15,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:55:15,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985150410] [2025-01-23 19:55:15,522 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-23 19:55:15,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:55:15,575 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 462 statements into 2 equivalence classes. [2025-01-23 19:55:15,682 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 462 of 462 statements. [2025-01-23 19:55:15,682 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-23 19:55:15,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:55:32,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8337 backedges. 6884 proven. 1453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:55:32,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:55:32,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985150410] [2025-01-23 19:55:32,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985150410] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:55:32,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463779941] [2025-01-23 19:55:32,079 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-23 19:55:32,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:55:32,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:55:32,082 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:55:32,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-23 19:55:32,290 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 462 statements into 2 equivalence classes. [2025-01-23 19:55:32,482 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 462 of 462 statements. [2025-01-23 19:55:32,482 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-23 19:55:32,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:55:32,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 2004 conjuncts, 89 conjuncts are in the unsatisfiable core [2025-01-23 19:55:32,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:55:41,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8337 backedges. 5530 proven. 921 refuted. 0 times theorem prover too weak. 1886 trivial. 0 not checked. [2025-01-23 19:55:41,319 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:55:51,683 INFO L134 CoverageAnalysis]: Checked inductivity of 8337 backedges. 5590 proven. 861 refuted. 0 times theorem prover too weak. 1886 trivial. 0 not checked. [2025-01-23 19:55:51,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463779941] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:55:51,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:55:51,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [180, 87, 87] total 350 [2025-01-23 19:55:51,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639623831] [2025-01-23 19:55:51,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:55:51,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 351 states [2025-01-23 19:55:51,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:55:51,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 351 interpolants. [2025-01-23 19:55:51,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17608, Invalid=105242, Unknown=0, NotChecked=0, Total=122850 [2025-01-23 19:55:51,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:55:51,692 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:55:51,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 351 states, 351 states have (on average 2.6894586894586894) internal successors, (944), 350 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:55:51,692 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:55:51,692 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:55:51,692 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:55:51,692 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:55:51,692 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:55:51,692 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:55:51,692 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:55:51,692 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:55:51,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:55:51,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:55:51,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:55:51,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:55:51,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 127 states. [2025-01-23 19:55:51,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:55:51,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2025-01-23 19:55:51,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2025-01-23 19:55:51,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 210 states. [2025-01-23 19:55:51,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2025-01-23 19:55:51,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2025-01-23 19:55:51,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 87 states. [2025-01-23 19:55:51,693 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:55:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:55:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:55:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:55:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:55:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:55:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:55:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:55:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:55:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:55:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:55:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:55:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:55:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2025-01-23 19:55:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:55:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-23 19:55:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-23 19:55:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2025-01-23 19:55:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-01-23 19:55:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-01-23 19:55:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2025-01-23 19:55:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-01-23 19:55:52,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-01-23 19:55:52,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:55:52,283 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:55:52,283 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:55:52,284 INFO L139 ounterexampleChecker]: Examining path program with hash -531440874, occurence #11 [2025-01-23 19:55:52,284 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:55:52,284 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:55:52,284 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:52,284 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 44 [2025-01-23 19:55:52,284 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:55:52,284 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 47 [2025-01-23 19:55:52,284 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:55:52,284 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 50 [2025-01-23 19:55:52,284 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:55:52,284 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 426 [2025-01-23 19:55:52,284 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:52,284 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 429 [2025-01-23 19:55:52,284 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:52,284 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 432 [2025-01-23 19:55:52,284 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:52,284 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 435 [2025-01-23 19:55:52,284 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:52,284 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 438 [2025-01-23 19:55:52,284 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:52,285 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 441 [2025-01-23 19:55:52,285 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:52,285 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 444 [2025-01-23 19:55:52,285 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:52,285 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 447 [2025-01-23 19:55:52,285 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:52,285 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 450 [2025-01-23 19:55:52,285 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:52,285 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 453 [2025-01-23 19:55:52,285 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:52,285 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 456 [2025-01-23 19:55:52,285 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:55:52,285 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 458 [2025-01-23 19:55:52,285 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:55:52,285 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:55:52,285 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:55:52,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:55:52,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1840062313, now seen corresponding path program 21 times [2025-01-23 19:55:52,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:55:52,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479399318] [2025-01-23 19:55:52,286 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-23 19:55:52,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:55:52,319 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 463 statements into 41 equivalence classes. [2025-01-23 19:56:35,182 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) and asserted 463 of 463 statements. [2025-01-23 19:56:35,182 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2025-01-23 19:56:35,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:56:40,693 INFO L134 CoverageAnalysis]: Checked inductivity of 8379 backedges. 7356 proven. 1023 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:56:40,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:56:40,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479399318] [2025-01-23 19:56:40,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479399318] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:56:40,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588270079] [2025-01-23 19:56:40,694 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-23 19:56:40,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:56:40,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:56:40,695 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:56:40,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-23 19:56:40,908 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 463 statements into 41 equivalence classes. [2025-01-23 19:57:20,576 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) and asserted 463 of 463 statements. [2025-01-23 19:57:20,576 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2025-01-23 19:57:20,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:57:20,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 2013 conjuncts, 91 conjuncts are in the unsatisfiable core [2025-01-23 19:57:20,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:57:26,563 INFO L134 CoverageAnalysis]: Checked inductivity of 8379 backedges. 6480 proven. 1723 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2025-01-23 19:57:26,563 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:57:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 8379 backedges. 7300 proven. 903 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2025-01-23 19:57:34,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588270079] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:57:34,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:57:34,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 89, 89] total 272 [2025-01-23 19:57:34,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707465340] [2025-01-23 19:57:34,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:57:34,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 273 states [2025-01-23 19:57:34,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:57:34,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 273 interpolants. [2025-01-23 19:57:34,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12012, Invalid=62244, Unknown=0, NotChecked=0, Total=74256 [2025-01-23 19:57:34,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:57:34,049 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:57:34,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 273 states, 273 states have (on average 4.717948717948718) internal successors, (1288), 272 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:57:34,050 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:57:34,050 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:57:34,050 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:57:34,050 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:57:34,050 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:57:34,050 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:57:34,050 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:57:34,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:57:34,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:57:34,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:57:34,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:57:34,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:57:34,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 127 states. [2025-01-23 19:57:34,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:57:34,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2025-01-23 19:57:34,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2025-01-23 19:57:34,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 210 states. [2025-01-23 19:57:34,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2025-01-23 19:57:34,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2025-01-23 19:57:34,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 87 states. [2025-01-23 19:57:34,052 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2025-01-23 19:57:34,052 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:57:34,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:57:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:57:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:57:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:57:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:57:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:57:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:57:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:57:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:57:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:57:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:57:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:57:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2025-01-23 19:57:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:57:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-23 19:57:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-23 19:57:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2025-01-23 19:57:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-01-23 19:57:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-01-23 19:57:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2025-01-23 19:57:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-01-23 19:57:34,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-01-23 19:57:34,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-01-23 19:57:34,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-01-23 19:57:34,685 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:57:34,685 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:57:34,686 INFO L139 ounterexampleChecker]: Examining path program with hash -531440874, occurence #12 [2025-01-23 19:57:34,686 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:57:34,686 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:57:34,686 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:57:34,686 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 45 [2025-01-23 19:57:34,686 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:57:34,686 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 48 [2025-01-23 19:57:34,686 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:57:34,686 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 51 [2025-01-23 19:57:34,686 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:57:34,686 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 427 [2025-01-23 19:57:34,686 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:57:34,687 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 430 [2025-01-23 19:57:34,687 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:57:34,687 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 433 [2025-01-23 19:57:34,687 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:57:34,687 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 436 [2025-01-23 19:57:34,687 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:57:34,687 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 439 [2025-01-23 19:57:34,687 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:57:34,687 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 442 [2025-01-23 19:57:34,687 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:57:34,687 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 445 [2025-01-23 19:57:34,687 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:57:34,687 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 448 [2025-01-23 19:57:34,687 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:57:34,687 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 451 [2025-01-23 19:57:34,687 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:57:34,687 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 454 [2025-01-23 19:57:34,687 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:57:34,687 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 457 [2025-01-23 19:57:34,687 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:57:34,687 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 459 [2025-01-23 19:57:34,687 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:57:34,687 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:57:34,687 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:57:34,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:57:34,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1294411602, now seen corresponding path program 22 times [2025-01-23 19:57:34,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:57:34,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186334972] [2025-01-23 19:57:34,688 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-23 19:57:34,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:57:34,726 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 464 statements into 2 equivalence classes. [2025-01-23 19:57:34,761 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 286 of 464 statements. [2025-01-23 19:57:34,761 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-23 19:57:34,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:57:37,092 INFO L134 CoverageAnalysis]: Checked inductivity of 8422 backedges. 6942 proven. 534 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2025-01-23 19:57:37,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:57:37,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186334972] [2025-01-23 19:57:37,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186334972] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:57:37,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395078935] [2025-01-23 19:57:37,093 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-23 19:57:37,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:57:37,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:57:37,095 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:57:37,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-01-23 19:57:37,342 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 464 statements into 2 equivalence classes. [2025-01-23 19:57:37,389 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 286 of 464 statements. [2025-01-23 19:57:37,389 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-23 19:57:37,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:57:37,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 138 conjuncts are in the unsatisfiable core [2025-01-23 19:57:37,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-23 19:57:46,125 INFO L134 CoverageAnalysis]: Checked inductivity of 8422 backedges. 0 proven. 7476 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2025-01-23 19:57:46,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-23 19:57:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 8422 backedges. 6942 proven. 534 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2025-01-23 19:57:50,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395078935] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-23 19:57:50,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-23 19:57:50,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 139, 100] total 294 [2025-01-23 19:57:50,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404690867] [2025-01-23 19:57:50,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-23 19:57:50,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 294 states [2025-01-23 19:57:50,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-23 19:57:50,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 294 interpolants. [2025-01-23 19:57:50,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19911, Invalid=66231, Unknown=0, NotChecked=0, Total=86142 [2025-01-23 19:57:50,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:57:50,572 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-01-23 19:57:50,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 294 states, 294 states have (on average 4.23469387755102) internal successors, (1245), 294 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-23 19:57:50,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:57:50,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:57:50,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:57:50,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:57:50,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:57:50,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:57:50,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:57:50,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:57:50,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:57:50,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:57:50,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:57:50,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:57:50,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 127 states. [2025-01-23 19:57:50,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:57:50,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2025-01-23 19:57:50,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2025-01-23 19:57:50,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 210 states. [2025-01-23 19:57:50,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2025-01-23 19:57:50,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2025-01-23 19:57:50,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 87 states. [2025-01-23 19:57:50,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 45 states. [2025-01-23 19:57:50,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 46 states. [2025-01-23 19:57:50,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-01-23 19:58:15,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-23 19:58:15,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-23 19:58:15,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-23 19:58:15,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-23 19:58:15,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-01-23 19:58:15,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-23 19:58:15,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-23 19:58:15,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-23 19:58:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-23 19:58:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-23 19:58:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2025-01-23 19:58:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:58:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2025-01-23 19:58:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-23 19:58:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-23 19:58:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-23 19:58:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2025-01-23 19:58:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-01-23 19:58:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-01-23 19:58:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2025-01-23 19:58:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-01-23 19:58:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-01-23 19:58:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 455 states. [2025-01-23 19:58:15,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-01-23 19:58:16,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-01-23 19:58:16,053 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-23 19:58:16,053 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-01-23 19:58:16,053 INFO L139 ounterexampleChecker]: Examining path program with hash -531440874, occurence #13 [2025-01-23 19:58:16,053 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-01-23 19:58:16,053 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 0 [2025-01-23 19:58:16,053 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,053 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 45 [2025-01-23 19:58:16,053 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:58:16,053 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 48 [2025-01-23 19:58:16,053 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:58:16,053 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 51 [2025-01-23 19:58:16,053 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:58:16,054 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 544 [2025-01-23 19:58:16,054 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,054 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 547 [2025-01-23 19:58:16,054 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,054 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 550 [2025-01-23 19:58:16,054 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,054 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 553 [2025-01-23 19:58:16,054 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,054 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 556 [2025-01-23 19:58:16,054 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,054 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 559 [2025-01-23 19:58:16,054 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,054 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 562 [2025-01-23 19:58:16,054 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,054 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 565 [2025-01-23 19:58:16,054 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,054 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 568 [2025-01-23 19:58:16,054 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,054 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 571 [2025-01-23 19:58:16,054 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,054 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 574 [2025-01-23 19:58:16,054 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,054 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 577 [2025-01-23 19:58:16,054 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,054 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 580 [2025-01-23 19:58:16,054 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,054 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 583 [2025-01-23 19:58:16,054 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,054 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 586 [2025-01-23 19:58:16,054 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,054 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 589 [2025-01-23 19:58:16,054 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,054 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 592 [2025-01-23 19:58:16,054 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,054 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 595 [2025-01-23 19:58:16,054 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,054 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 598 [2025-01-23 19:58:16,054 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,055 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 601 [2025-01-23 19:58:16,055 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,055 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 604 [2025-01-23 19:58:16,055 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,055 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 607 [2025-01-23 19:58:16,055 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,055 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 610 [2025-01-23 19:58:16,055 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,055 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 613 [2025-01-23 19:58:16,055 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,055 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 616 [2025-01-23 19:58:16,055 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-01-23 19:58:16,055 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 618 [2025-01-23 19:58:16,055 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-01-23 19:58:16,055 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-01-23 19:58:16,055 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-01-23 19:58:16,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-23 19:58:16,055 INFO L85 PathProgramCache]: Analyzing trace with hash 537338815, now seen corresponding path program 23 times [2025-01-23 19:58:16,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-23 19:58:16,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886295675] [2025-01-23 19:58:16,056 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-23 19:58:16,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-23 19:58:16,096 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 623 statements into 54 equivalence classes. [2025-01-23 19:58:26,123 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) and asserted 623 of 623 statements. [2025-01-23 19:58:26,124 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2025-01-23 19:58:26,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-23 19:58:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 14644 backedges. 13698 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-23 19:58:36,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-23 19:58:36,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886295675] [2025-01-23 19:58:36,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886295675] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-23 19:58:36,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561657367] [2025-01-23 19:58:36,249 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-23 19:58:36,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-23 19:58:36,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 [2025-01-23 19:58:36,251 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-23 19:58:36,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-01-23 19:58:36,512 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 623 statements into 54 equivalence classes.